Seiko Instruments Electronic Components Datasheet


S-1000Nxx

Ultra Small Package High Precision Voltage Detector


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION
VOLTAGE DETECTOR
S-1000 Series
The S-1000 series is a series of high-precision voltage
detectors developed using CMOS process. The detection
voltage is fixed internally with an accuracy of ±1.0%. It
operates with low current consumption of 350 nA typ. Two
output forms, Nch open-drain and CMOS output, are
available. CMOS voltage detector, S-1000 Series is the most
suitable for the portable equipments with ultra low current
consumption, high precision and corresponding to the small
package.
„ Features
Ultra-low current consumption
High-precision detection voltage
Operating voltage range
Hysteresis characteristics
Detection voltage
Output form
Lead-free products
350 nA typ. (VDD = detection voltage + 1.5 V)
±1.0%
0.95 to 5.5 V
5% typ.
1.5 to 4.6 V (0.1 V step)
Nch open-drain output (Active “L”)
CMOS output (Active “L”)
„ Applications
Power monitor for microcomputers and reset for CPUs.
Power monitor for portable equipments such as cellular phones, digital still cameras and PDAs.
Constant voltage power monitor for cameras, video equipments and communication devices.
„ Packages
Package name
SC-82AB
SOT-23-5
SNT-4A
Package
NP004-A
MP005-A
PF004-A
Drawing code
Tape
NP004-A
MP005-A
PF004-A
Reel
NP004-A
MP005-A
PF004-A
Seiko Instruments Inc.
1


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
„ Block Diagrams
1. Nch open-drain output products
VDD
*1
+
VSS
*1. Parasitic diode
VREF
Figure 1
OUT
*1
2. CMOS output products
VDD
*1
+
*1. Parasitic diode
VSS
VREF
Figure 2
*1
OUT
*1
2 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Product Name Structure
The detection voltage, output form and packages for S-1000 series can be selected at the user's request. Refer to the "1.
Product name" for the construction of the product name and "2. Product name list" for the full product names.
1. Product name
S-1000 x xx - xxxx G
Package name (abbreviation) and packing specifications*1
N4T1: SC-82AB, tape
M5T1: SOT-23-5, tape
I4T1: SNT-4A, tape
Detection voltage value
15 ~ 46
(e.g. When the detection voltage is 1.5 V, it is expressed as 15.)
Output form
N: Nch open-drain output (Active “L”)
C: CMOS output (Active “L”)
*1. Refer to the taping specifications at the end of this book.
Seiko Instruments Inc.
3


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
2. Product name list
2. 1 Nch open-drain output products
Detection voltage range
1.5 V ± 1.0%
1.6 V ± 1.0%
1.7 V ± 1.0%
1.8 V ± 1.0%
1.9 V ± 1.0%
2.0 V ± 1.0%
2.1 V ± 1.0%
2.2 V ± 1.0%
2.3 V ± 1.0%
2.4 V ± 1.0%
2.5 V ± 1.0%
2.6 V ± 1.0%
2.7 V ± 1.0%
2.8 V ± 1.0%
2.9 V ± 1.0%
3.0 V ± 1.0%
3.1 V ± 1.0%
3.2 V ± 1.0%
3.3 V ± 1.0%
3.4 V ± 1.0%
3.5 V ± 1.0%
3.6 V ± 1.0%
3.7 V ± 1.0%
3.8 V ± 1.0%
3.9 V ± 1.0%
4.0 V ± 1.0%
4.1 V ± 1.0%
4.2 V ± 1.0%
4.3 V ± 1.0%
4.4 V ± 1.0%
4.5 V ± 1.0%
4.6 V ± 1.0%
Table 1
SC-82AB
SOT-23-5
S-1000N15-N4T1G
S-1000N15-M5T1G
S-1000N16-N4T1G
S-1000N16-M5T1G
S-1000N17-N4T1G
S-1000N17-M5T1G
S-1000N18-N4T1G
S-1000N18-M5T1G
S-1000N19-N4T1G
S-1000N19-M5T1G
S-1000N20-N4T1G
S-1000N20-M5T1G
S-1000N21-N4T1G
S-1000N21-M5T1G
S-1000N22-N4T1G
S-1000N22-M5T1G
S-1000N23-N4T1G
S-1000N23-M5T1G
S-1000N24-N4T1G
S-1000N24-M5T1G
S-1000N25-N4T1G
S-1000N25-M5T1G
S-1000N26-N4T1G
S-1000N26-M5T1G
S-1000N27-N4T1G
S-1000N27-M5T1G
S-1000N28-N4T1G
S-1000N28-M5T1G
S-1000N29-N4T1G
S-1000N29-M5T1G
S-1000N30-N4T1G
S-1000N30-M5T1G
S-1000N31-N4T1G
S-1000N31-M5T1G
S-1000N32-N4T1G
S-1000N32-M5T1G
S-1000N33-N4T1G
S-1000N33-M5T1G
S-1000N34-N4T1G
S-1000N34-M5T1G
S-1000N35-N4T1G
S-1000N35-M5T1G
S-1000N36-N4T1G
S-1000N36-M5T1G
S-1000N37-N4T1G
S-1000N37-M5T1G
S-1000N38-N4T1G
S-1000N38-M5T1G
S-1000N39-N4T1G
S-1000N39-M5T1G
S-1000N40-N4T1G
S-1000N40-M5T1G
S-1000N41-N4T1G
S-1000N41-M5T1G
S-1000N42-N4T1G
S-1000N42-M5T1G
S-1000N43-N4T1G
S-1000N43-M5T1G
S-1000N44-N4T1G
S-1000N44-M5T1G
S-1000N45-N4T1G
S-1000N45-M5T1G
S-1000N46-N4T1G
S-1000N46-M5T1G
SNT-4A
S-1000N15-I4T1G
S-1000N16-I4T1G
S-1000N17-I4T1G
S-1000N18-I4T1G
S-1000N19-I4T1G
S-1000N20-I4T1G
S-1000N21-I4T1G
S-1000N22-I4T1G
S-1000N23-I4T1G
S-1000N24-I4T1G
S-1000N25-I4T1G
S-1000N26-I4T1G
S-1000N27-I4T1G
S-1000N28-I4T1G
S-1000N29-I4T1G
S-1000N30-I4T1G
S-1000N31-I4T1G
S-1000N32-I4T1G
S-1000N33-I4T1G
S-1000N34-I4T1G
S-1000N35-I4T1G
S-1000N36-I4T1G
S-1000N37-I4T1G
S-1000N38-I4T1G
S-1000N39-I4T1G
S-1000N40-I4T1G
S-1000N41-I4T1G
S-1000N42-I4T1G
S-1000N43-I4T1G
S-1000N44-I4T1G
S-1000N45-I4T1G
S-1000N46-I4T1G
Rev.2.1_01
4 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
2. 2 CMOS output products
Detection voltage range
1.5 V ± 1.0%
1.6 V ± 1.0%
1.7 V ±1.0%
1.8 V ± 1.0%
1.9 V ± 1.0%
2.0 V ± 1.0%
2.1 V ± 1.0%
2.2 V ± 1.0%
2.3 V ± 1.0%
2.4 V ± 1.0%
2.5 V ± 1.0%
2.6 V ± 1.0%
2.7 V ± 1.0%
2.8 V ± 1.0%
2.9 V ± 1.0%
3.0 V ± 1.0%
3.1 V ± 1.0%
3.2 V ± 1.0%
3.3 V ± 1.0%
3.4 V ± 1.0%
3.5 V ± 1.0%
3.6 V ± 1.0%
3.7 V ± 1.0%
3.8 V ± 1.0%
3.9 V ± 1.0%
4.0 V ± 1.0%
4.1 V ± 1.0%
4.2 V ± 1.0%
4.3 V ± 1.0%
4.4 V ± 1.0%
4.5 V ± 1.0%
4.6 V ± 1.0%
Table 2
SC-82AB
SOT-23-5
S-1000C15-N4T1G
S-1000C15-M5T1G
S-1000C16-N4T1G
S-1000C16-M5T1G
S-1000C17-N4T1G
S-1000C17-M5T1G
S-1000C18-N4T1G
S-1000C18-M5T1G
S-1000C19-N4T1G
S-1000C19-M5T1G
S-1000C20-N4T1G
S-1000C20-M5T1G
S-1000C21-N4T1G
S-1000C21-M5T1G
S-1000C22-N4T1G
S-1000C22-M5T1G
S-1000C23-N4T1G
S-1000C23-M5T1G
S-1000C24-N4T1G
S-1000C24-M5T1G
S-1000C25-N4T1G
S-1000C25-M5T1G
S-1000C26-N4T1G
S-1000C26-M5T1G
S-1000C27-N4T1G
S-1000C27-M5T1G
S-1000C28-N4T1G
S-1000C28-M5T1G
S-1000C29-N4T1G
S-1000C29-M5T1G
S-1000C30-N4T1G
S-1000C30-M5T1G
S-1000C31-N4T1G
S-1000C31-M5T1G
S-1000C32-N4T1G
S-1000C32-M5T1G
S-1000C33-N4T1G
S-1000C33-M5T1G
S-1000C34-N4T1G
S-1000C34-M5T1G
S-1000C35-N4T1G
S-1000C35-M5T1G
S-1000C36-N4T1G
S-1000C36-M5T1G
S-1000C37-N4T1G
S-1000C37-M5T1G
S-1000C38-N4T1G
S-1000C38-M5T1G
S-1000C39-N4T1G
S-1000C39-M5T1G
S-1000C40-N4T1G
S-1000C40-M5T1G
S-1000C41-N4T1G
S-1000C41-M5T1G
S-1000C42-N4T1G
S-1000C42-M5T1G
S-1000C43-N4T1G
S-1000C43-M5T1G
S-1000C44-N4T1G
S-1000C44-M5T1G
S-1000C45-N4T1G
S-1000C45-M5T1G
S-1000C46-N4T1G
S-1000C46-M5T1G
SNT-4A
S-1000C15-I4T1G
S-1000C16-I4T1G
S-1000C17-I4T1G
S-1000C18-I4T1G
S-1000C19-I4T1G
S-1000C20-I4T1G
S-1000C21-I4T1G
S-1000C22-I4T1G
S-1000C23-I4T1G
S-1000C24-I4T1G
S-1000C25-I4T1G
S-1000C26-I4T1G
S-1000C27-I4T1G
S-1000C28-I4T1G
S-1000C29-I4T1G
S-1000C30-I4T1G
S-1000C31-I4T1G
S-1000C32-I4T1G
S-1000C33-I4T1G
S-1000C34-I4T1G
S-1000C35-I4T1G
S-1000C36-I4T1G
S-1000C37-I4T1G
S-1000C38-I4T1G
S-1000C39-I4T1G
S-1000C40-I4T1G
S-1000C41-I4T1G
S-1000C42-I4T1G
S-1000C43-I4T1G
S-1000C44-I4T1G
S-1000C45-I4T1G
S-1000C46-I4T1G
Seiko Instruments Inc.
5


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Output Forms
Rev.2.1_01
1. Output forms in S-1000 series
Table 3
S-1000 series
Nch open-drain output products
(Active “L”)
“N” is the last letter of the product name.
e.g. S-1000N
CMOS output products
(Active “L”)
“C” is the last letter of the product name.
e.g. S-1000C
2. Output form and their usage
Usage
Different power supplies
Active “L” reset for CPUs
Active “H” reset for CPUs
Detection voltage change by resistor divider
Table 4
Nch open-drain output products
(Active “L”)
Yes
Yes
No
Yes
CMOS output products
(Active “L”)
No
Yes
No
No
Example for two power supplies
VDD1
VDD2
Example for one power supply
VDD
VDD
V/D
Nch
OUT
CPU
VSS
V/D
CMOS OUT
CPU
VSS
Figure 3
V/D
Nch
OUT
CPU
VSS
6 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Pin Configurations
SC-82AB
Top view
43
Table 5
Pin No.
Pin name
Pin description
1
OUT
Voltage detection output pin
2
VDD
Voltage input pin
3
NC*1
No connection
4
VSS
GND pin
*1. The NC pin is electrically open.
The NC pin can be connected to VDD or VSS.
12
Figure 4
SOT-23-5
Top view
54
12 3
Figure 5
Table 6
Pin No.
Pin name
Pin description
1
OUT
Voltage detection output pin
2
VDD
Voltage input pin
3
VSS
GND pin
4
NC*1
No connection
5
NC*1
No connection
*1. The NC pin is electrically open.
The NC pin can be connected to VDD or VSS.
SNT-4A
Top view
14
23
Figure 7
Table 7
Pin No.
Pin name
Pin description
1
OUT
Voltage detection output pin
2
VSS
GND pin
3
NC*1
No connection
4
VDD
Voltage input pin
*1. The NC pin is electrically open.
The NC pin can be connected to VDD or VSS.
Seiko Instruments Inc.
7


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
„ Absolute Maximum Ratings
Table 8
Item Symbol
Power supply voltage
Output voltage
Nch open-drain output products
CMOS output products
VDD VSS
VOUT
Output current
SC-82AB
IOUT
Power dissipation
SOT-23-5
SNT-4A
PD
Operating ambient temperature
Topr
Storage temperature
Tstg
*1. At mounted on JEDEC high heat dissipation printed circuit board
(Ta = 25 °C unless otherwise specified)
Absolute maximum ratings Unit
6V
VSS 0.3 to VSS + 6
VSS 0.3 to VDD + 0.3
50
V
V
mA
200 mW
300
300*1
mW
mW
40 to +85
°C
40 to +125
°C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
8 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Electrical Characteristics
1. Nch open-drain output products
Table 9
(Ta = 25 °C unless otherwise specified)
Measure-
Item
Symbol
Condition
Min. Typ. Max. Unit ment
circuit
Detection voltage*1
Hysteresis width
Current consumption
Operating voltage
Output current
Leakage current
Response time
VDET
VHYS
ISS
VDD
IOUT
ILEAK
tPLH
VDD = −VDET(S) + 1.5 V S-1000N15 to 39
VDD = 5.5 V
S-1000N40 to 46
Output transistor,
Nch, VDS = 0.5 V, VDD = 1.2 V
Output transistor,
Nch, VDS = 5.5 V, VDD = 5.5 V
VDET(S)
×0.99
VDET
×0.03
0.95
1.36
VDET(S) VDET(S)
×1.01
VDET VDET
×0.05 ×0.07
350 900
350 900
5.5
2.55
100
60
V
V
nA
nA
V
mA
nA
µs
1
1
2
2
1
3
3
1
Detection voltage
∆−VDET
temperature coefficient*2 Ta•−VDET
Ta = −40 to +85 °C
±100
±350
ppm /
°C
1
*1. VDET: Actual detection voltage value, VDET(S): Specified detection voltage value (The center value of the detection voltage
range in Table 1.)
*2. The temperature change ratio in the detection voltage [mV / °C] is calculated by using the following equation.
[ ] [ ][ ]∆ − VDET
Ta
mV / °C *1 = ( )VDET(S) Typ.
V
*2
×
∆ − VDET
Ta VDET
ppm / °C *3 ÷ 1000
*1. Temperature change ratio of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
2. CMOS output products
Table 10
(Ta = 25 °C unless otherwise specified)
Item
Symbol
Condition
Measure-
Min. Typ. Max. Unit ment
circuit
Detection voltage*1
Hysteresis width
Current consumption
Operating voltage
VDET
VHYS
ISS
VDD
Output current
IOUT
Response time
tPLH
Detection voltage
∆−VDET
temperature coefficient*2 Ta•−VDET
VDET(S) VDET(S) VDET(S)
×0.99
×1.01
V
VDET VDET VDET
×0.03 ×0.05 ×0.07
V
VDD = −VDET(S)+ 1.5 V S-1000C15 to 39
350 900 nA
VDD = 5.5 V
S-1000C40 to 46
350 900 nA
0.95 5.5 V
Output transistor,
Nch, VDS = 0.5 V, VDD = 1.2 V
1.36 2.55
mA
Output transistor,
Pch, VDS = 0.5 V, VDD = 5.5 V
1.71 2.76
−−
mA
60 µs
Ta = −40 to +85 °C
±100
±350
ppm/
°C
1
1
2
2
1
3
4
1
1
*1. VDET: Actual detection voltage value, VDET(S): Specified detection voltage value (The center value of the detection voltage
range in Table 2.)
*2. The temperature change ratio in the detection voltage [mV / °C] is calculated by using the following equation.
[ ] [ ][ ]∆ − VDET
Ta
mV / °C *1 = ( )VDET(S) Typ.
V
*2
×
∆ − VDET
Ta VDET
ppm / °C *3 ÷ 1000
*1. Temperature change ratio of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
10 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Measurement Circuits
1.
VDD
VDD
R*1
S-1000 OUT
100 k
V Series
VSS
V
*1. R is unnecessary for CMOS output products.
Figure 7
2.
A
VDD
VDD
S-1000
OUT
Series
VSS
3.
VDD
Figure 8
VDD
S-1000
OUT
V Series
A
VSS
V
VDS
4.
VDD
Figure 9
VDD
V
VDS
S-1000
OUT
V Series
A
VSS
Figure 10
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
„ Timing Chart
1. Nch open-drain output products
Hysteresis width (VHYS)
VDD
VSS
VDD
Release voltage (+VDET)
Detection voltage (VDET)
Minimum operating voltage
VSS
Output from the OUT pin
Figure 11
VDD
OUT
VSS
R
100 k
V
2. CMOS output products
Hysteresis width (VHYS)
VDD
VDD
Release voltage (+VDET)
Detection voltage (VDET)
Minimum operating voltage
VSS
Output from the OUT pin
VDD
OUT
VSS
V
VSS
Remark For values of VDD less than minimum operating voltage, values of OUT terminal output is free in the shaded region.
Figure 12
12 Seiko Instruments Inc.


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Rev.2.1_01
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Operation
1. Basic operation: CMOS output (Active “L”)
(1) When the power supply voltage (VDD) is higher than the release voltage (+VDET), the Nch transistor is OFF and the
Pch transistor is ON to provide VDD (“H”) at the output. Since the Nch transistor N1 in Figure 13 is OFF, the
comparator input voltage is (RB + RC) VDD .
RA + RB + RC
(2) When the VDD goes below +VDET, the output provides the VDD level, as long as the VDD remains above the detection
voltage VDET. When the VDD falls below VDET (point A in Figure 14), the Nch transistor becomes ON, the Pch
transistor becomes OFF, and the VSS level appears at the output. At this time the Nch transistor N1 in Figure 13
becomes ON, the comparator input voltage is changed to RB VDD .
RA + RB
(3) When the VDD falls below the minimum operating voltage, the output becomes undefined, or goes to the VDD when the
output is pulled up to the VDD.
(4) The VSS level appears when the VDD rises above the minimum operating voltage. The VSS level still appears even
when the VDD surpasses VDET, as long as it does not exceed the release voltage +VDET.
(5) When the VDD rises above +VDET (point B in Figure 14), the Nch transistor becomes OFF and the Pch transistor
becomes ON to provide VDD level at the output.
VDD
VSS
*1. Parasiteic diode
*1 RA
RB
VREF
RC
+
N1
*1
Pch
Nch
OUT
*1
Figure 13 Operation 1
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
(1) (2) (3) (4)
Hysteresis width (VHYS)
A
B
(5)
VDD
Release voltage (+VDET)
Detection voltage (VDET)
Minimum operating voltage
VSS
VDD
VSS
Output from the OUT pin
Figure 14 Operation 2
2. Other characteristics
2. 1 Temperature characteristics of detection voltage
The shaded area in Figure 15 shows the temperature characteristics of the detection voltage.
VDET [V]
+0.945 mV/°C
VDET25*1
0.945 mV/°C
40 25
85 Ta [°C]
*1. VDET25 is an actual detection voltage value at 25°C.
Figure 15 Temperature characteristics of detection voltage ( Example for VDET = 2.7 V)
2. 2 Temperature characteristics of release voltage
The temperature change ∆ + VDET of the release voltage is calculated by the temperature change ∆ − VDET of the
Ta Ta
detection voltage as follows:
+ VDET
Ta
=
+ VDET
VDET
×
VDET
Ta
The temperature changes of the release voltage and the detection voltage have the same sign consequently.
14 Seiko Instruments Inc.


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S-1000 Series
2. 3 Temperature characteristics of hysteresis voltage
The temperature changes of the hysteresis voltage is expressed as
+ VDET
Ta
VDET
Ta
and is calculated as
follows:
+ VDET
Ta
VDET
Ta
=
VHYS
VDET
×
∆ − VDET
Ta
„ Standard Circuit
VDD
OUT
VSS
R*1
100 k
*1. R is unnecessary for CMOS output products.
Figure 16
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
evaluation using the actual application to set the constants.
„ Explanation of Terms
1. Detection voltage (VDET), release voltage (+VDET)
The detection voltage (VDET) is a voltage at which the output turns to “L”. The detection voltage varies slightly among
products of the same specification. The variation of detection voltage between the specified minimum (VDET) Min. and the
maximum (VDET) Max. is called the detection voltage range (Refer to Figure 17).
Example: For the S-1000C15, the detection voltage lies in the range of 1.485 (VDET) 1.515.
This means that some S-1000C15s have 1.485 V for VDET and some have 1.515 V.
The release voltage is a voltage at which the output turns to “H”. The release voltage varies slightly among products of
the same specification. The variation of release voltages between the specified minimum (+VDET) Min. and the maximum
(+VDET) Max. is called the release voltage range (Refer to Figure 18). The range is calculed from the actual detection
voltage (VDET) of a product and is expressed by VDET × 1.03 ≤ +VDET ≤ −VDET × 1.07.
Example: For the S-1000C15, the release voltage lies in the range of 1.530 (+VDET) 1.621.
This means that some S-1000C15s have 1.530 V for +VDET and some have 1.621 V.
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
VDD
(VDET) Max.
(VDET) Min.
Detection voltage
Detection voltage range
Release voltage
(+VDET) Max.
(+VDET) Min.
VDD
Release voltage range
OUT
OUT
Figure 17 Detection voltage (CMOS output products)
Figure 18 Release voltage (CMOS output products)
2. Hysteresis width (VHYS)
The hysteresis width is the voltage difference between the detection voltage and the release voltage (The voltage at point
B The voltage at point A = VHYS in Figure 14). The existence of the hysteresis width prevents malfunction caused by
noise on input signal.
3. Through-type current
The through-type current refers to the current that flows instantaneously at the time of detection and release of a voltage
detector. The through-type current is large in CMOS output products, small in Nch open-drain output products.
4. Oscillation
In applications where a resistor is connected to the voltage detector input (Figure 19), taking a CMOS active “L” product
for example, the through-type current which is generated when the output goes from “L” to “H” (release) causes a voltage
drop equal to [through-type current] × [input resistance] across the resistor. When the input voltage drops below the
detection voltage (VDET) as a result, the output voltage goes to low level. In this state, the through-type current stops
and its resultant voltage drop disappears, and the output goes from “L” to “H”. The through-type current is then
generated again, a voltage drop appears, and repeating the process finally induces oscillation.
VDD
RA
VIN
S-1000C
OUT
RB
VSS
Figure 19 An example for bad implementation of input voltage divider
16 Seiko Instruments Inc.


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
„ Precautions
If the input impedance is high, oscillation may occur due to the through-type current etc. In COMS output products,
impedance should not be connected to the input pin. In Nch open drain output products, input impedance is
recommended to be 800 or less. However be sure to perform sufficient evaluation under the actual usage conditions for
selection, including evaluation of temperature characteristics.
In CMOS output products oscillation may occur when a pull-down resistor is used, and falling speed of the power supply
voltage (VDD) is slow near the detection voltage.
When designing for mass production using an application circuit described herein, the product deviation and temperature
characteristics should be taken into consideration. SII shall not bear any responsibility for the products on the circuits
described herein.
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of the products
including this IC upon patents owned by a third party.
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
„ Typical Characteristics (Typical Data)
1. Detection voltage (VDET) temperature (Ta)
S-1000C15
1.59
1.58
1.57
+VDET
1.56
1.55
1.54
1.53
1.52
1.50
-VDET
1.49
-40 -20 0 20 40 60 80
Ta [°C]
2. Hysteresis voltage width (VHYS) - temperature (Ta)
S-1000C15
8.0
7.0
6.0
5.0
4.0
3.0
-40 -20
0 20 40 60 80
Ta [°C]
3. Current consumption (ISS) input voltage (VDD)
S-1000C15
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0 1.0
Ta = 25 °C
2.0 3.0 4.0 5.0 6.0
VDD [V]
4. Current consumption (ISS) temperature (Ta)
S-1000C15
0.8
VDD = 3.0 V
0.6
0.4
0.2
0.0
-40 -20
0 20 40 60 80
Ta [°C]
S-1000C46
4.85
4.80
4.75
+VDET
4.70
4.65
4.60
4.55
-VDET
4.50
4.45
4.40
-40 -20 0 20 40 60 80
Ta [°C]
S-1000C46
8.0
7.0
6.0
5.0
4.0
3.0
-40
-20
0 20 40 60 80
Ta [°C]
S-1000C46
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
Ta = 25 °C
1.0 2.0 3.0 4.0 5.0 6.0
VDD [V]
S-1000C46
0.8
VDD = 5.5 V
0.6
0.4
0.2
0.0
-40 -20 0 20 40 60 80
Ta [°C]
18 Seiko Instruments Inc.


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S-1000 Series
5. Nch transistor output current (IOUT) VDS
S-1000C46 / S-1000N46
20.0
15.0
10.0
Ta = 25 °C
VDD = 3.6 V
VDD = 2.4 V
5.0
0
0
VDD = 1.2 V
VDD = 1.0 V
1.0 2.0
VDS [V]
3.0
4.0
7. Nch transistor output current (IOUT)
S-1000C46 / S-1000N46
8.0
VDS = 0.5 V
6.0 Ta = -40 °C
Ta = 25 °C
4.0
2.0 Ta = 85 °C
0
0
1.0 2.0 3.0 4.0 5.0
VDD [V]
9. Minimum operating voltage - input voltage (VDD)
S-1000N15
0.8
Pull-up to VDD
Pull-up resistance : 100 k
0.6
Ta = -40 °C
0.4 Ta = 25 °C
0.2 Ta = 85 °C
0
0 0.2 0.4 0.6 0.8 1.0
VDD [V]
S-1000N46
0.8
0.6
0.4
0.2
0
0
Pull-up to VDD
Pull-up resistance : 100 k
Ta = -40 °C
Ta = 25 °C
Ta = 85 °C
0.2 0.4 0.6 0.8 1.0
VDD [V]
6. Pch transistor output current (IOUT) VDS
S-1000C15
20.0
Ta = 25 °C
15.0
VDD = 4.6 V
10.0
5.0
0
0
VDD = 3.6 V
VDD = 2.4 V
VDD = 1.9 V
1.0 2.0 3.0
VDS [V]
4.0
8. Pch transistor output current (IOUT)
S-1000C15
4.0
Ta = -40 °C
3.0 Ta = 25 °C
VDS = 0.5 V
2.0
Ta = 85 °C
1.0
0
0
2.0 4.0 6.0
VDD [V]
8.0
S-1000N15
3.0
2.5
2.0
1.5
1.0
0.5
0
0
S-1000N46
6.0
5.0
4.0
3.0
2.0
1.0
0
0
Pull-up to 3.0 V
Pull-up resistance : 100 k
Ta = -40 °C
Ta = 25 °C
Ta = 85 °C
0.5 1.0 1.5 2.0 2.5
VDD [V]
Pull-up to 5.5 V
Pull-up resistance : 100 k
Ta = -40 °C
Ta = 25 °C
Ta = 85 °C
1.0 2.0 3.0 4.0 5.0
VDD [V]
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
S-1000N15
Pull-up resistance : 100 k
0.60
Ta = -40 °C
0.55
0.50
0.45
0.40
Ta = 25 °C
Ta = 85 °C
0.35
0.30
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Pull-up [V]
S-1000N46
Pull-up resistance : 100 k
0.60
0.55 Ta = -40 °C
0.50
0.45 Ta = 25 °C
0.40
0.35 Ta = 85 °C
0.30
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Pull-up [V]
10. Dynamic response - COUT
S-1000N15
100
Pull-up to VDD
Pull-up resistance : 100 k
Ta = 25 °C
10 tPLH
1
0.1
0.01
0.001
0.00001
tPHL
0.0001 0.001 0.01
Load capacitance [µF]
0.1
S-1000N46
100
10
Pull-up to VDD
Pull-up resistance : 100 k
Ta = 25 °C
tPLH
1
0.1
0.01
0.001
0.00001
tPHL
0.0001 0.001 0.01
Load capacitance [µF]
0.1
VOUT(V)
PULL-UP
PULL-UP×0.1
0
VDDmin
VDD(V)
Remark VDDmin. is defined by the VDD voltage at which VOUT
goes below 10% of pull-up voltage when the VDD
increase from 0 V.
Figure 20
S-1000C15
1
Ta = 25 °C
0.1 tPHL
0.01
0.001
0.00001
tPLH
0.0001 0.001 0.01
Load capacitance [µF]
0.1
S-1000C46
1
Ta = 25 °C
0.1 tPLH
0.01
0.001
0.00001
tPHL
0.0001 0.001 0.01
Load capacitance [µF]
0.1
20 Seiko Instruments Inc.


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S-1000 Series
VIH
Input voltagae
1 µs
1 µs
VIL
VDD
Output voltage
tPHL
tPLH
VDD × 10%
VIH = 5.5 V, VIL = 0.95 V
VDD
R*1
VDD
S-1000
OUT
100 k
V Series
VSS
COUT
V
VDD × 90% *1. R is unnecessary for CMOS output products.
Figure 22 Measurement circuit for response time
Figure 21 Measurement condition for response time
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
evaluation using the actual application to set the constants.
„ Application Circuit Examples
1. Microcomputer reset circuits
If the power supply voltage to a microcomputer falls below the specified level, an unspecified operation may be
performed or the contents of the memory register may be lost. When power supply voltage returns to normal, the
microcomputer needs to be initialized before normal operations can be done.
Reset circuits protect microcomputers in the event of current being momentarily switched off or lowered.
Reset circuits shown in Figures 23, 24 can be easily constructed with the help of the S-1000 series, that has low
operating voltage, a high-precision detection voltage and hysteresis.
VDD1
VDD2
VDD
S-1000C
Microcomputer
VSS
S-1000N
Microcomputer
VSS
Figure 23 Reset circuit example(S-1000C)
(Only for Nch open-drain products)
Figure 24 Reset circuit example (S-1000N)
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
evaluation using the actual application to set the constants.
Seiko Instruments Inc.
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S-1000 Series
Rev.2.1_01
2. Power-on reset circuit
A power-on reset circuit can be constructed using Nch open-drain output product of S-1000 Series.
VDD
R*1
Di*2
VIN
C*1
S-1000N
OUT
(Nch open-drain products)
VSS
*1. R should be 75 kor less, and C should be 0.01 µF or more to prevent oscillation.
If C is not connected, R should be 800 or less.
*2. Diode Di instantaneously discharges the charge stored in the capacitor (C) at the power falling, Di can be removed
when the delay of the falling time is not important.
Figure 25
VDD OUT
(V) (V)
t (s) t (s)
Figure 26
Remark When the power rises sharply as shown in the Figure 27 left, the output may go to the high level for an instant
in the undefined region where the output voltage is undefined since the power voltage is less than the minimum
operation voltage.
VDD OUT
(V) (V)
t (s)
Figure 27
t (s)
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
evaluation using the actual application to set the constants.
22 Seiko Instruments Inc.


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
3. Change of detection voltage
In Nch open-drain output products of the S-1000 series, detection voltage can be changed using resistance dividers or
diodes as shown in Figures 28 to 29. In Figure 28, hysteresis width also changes.
VDD
RA*1
VIN
S-1000N
OUT
VDD
Vf1
Vf2
VIN
S-1000N
OUT
+
RB
C*1
(Nch open-drain
output products)
VSS
Detection
voltagae
=
RA + RB
RB
VDET
Hysterisis
width
=
RA + RB
RB
VHYS
*1. RA should be 75 kor less, and C should be 0.01 µF
or more to prevent oscillation.
If C is not connected, RA should be 800 or less.
VSS
(Nch open-drain
output product)
Detection voltage = Vf1+Vf2+(VDET)
Figure 29
Caution
If RA and RB are large, the hysteresis width
may also be larger than the value given by
the above equation due to the through-type
current (which flows slightly in an Nch
open-drain product).
Figure 28
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
evaluation using the actual application to set the constants.
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
„ Marking Specifications
(1) SC-82AB
SC-82AB
Top view
43
(1) to (3):
Product code (refer to Product name vs. Product code)
(1) (2) (3)
12
Product name vs. Product code
(a) Nch open-drain output products
Product Name
Product Code
(1) (2) (3)
S-1000N15-N4T1G
PLA
S-1000N16-N4T1G
PLB
S-1000N17-N4T1G
PLC
S-1000N18-N4T1G
PLD
S-1000N19-N4T1G
PLE
S-1000N20-N4T1G
PLF
S-1000N21-N4T1G
PLG
S-1000N22-N4T1G
PLH
S-1000N23-N4T1G
PL
I
S-1000N24-N4T1G
PL J
S-1000N25-N4T1G
PLK
S-1000N26-N4T1G
PLL
S-1000N27-N4T1G
P LM
S-1000N28-N4T1G
PLN
S-1000N29-N4T1G
PLO
S-1000N30-N4T1G
PLP
(b) CMOS output products
Product Name
S-1000C15-N4T1G
S-1000C16-N4T1G
S-1000C17-N4T1G
S-1000C18-N4T1G
S-1000C19-N4T1G
S-1000C20-N4T1G
S-1000C21-N4T1G
S-1000C22-N4T1G
S-1000C23-N4T1G
S-1000C24-N4T1G
S-1000C25-N4T1G
S-1000C26-N4T1G
S-1000C27-N4T1G
S-1000C28-N4T1G
S-1000C29-N4T1G
S-1000C30-N4T1G
Product Code
(1) (2) (3)
PKA
PKB
PKC
PKD
PKE
PKF
PKG
PKH
PK
I
PK J
PKK
PKL
P KM
PKN
PKO
PKP
Product Name
S-1000N31-N4T1G
S-1000N32-N4T1G
S-1000N33-N4T1G
S-1000N34-N4T1G
S-1000N35-N4T1G
S-1000N36-N4T1G
S-1000N37-N4T1G
S-1000N38-N4T1G
S-1000N39-N4T1G
S-1000N40-N4T1G
S-1000N41-N4T1G
S-1000N42-N4T1G
S-1000N43-N4T1G
S-1000N44-N4T1G
S-1000N45-N4T1G
S-1000N46-N4T1G
Product Name
S-1000C31-N4T1G
S-1000C32-N4T1G
S-1000C33-N4T1G
S-1000C34-N4T1G
S-1000C35-N4T1G
S-1000C36-N4T1G
S-1000C37-N4T1G
S-1000C38-N4T1G
S-1000C39-N4T1G
S-1000C40-N4T1G
S-1000C41-N4T1G
S-1000C42-N4T1G
S-1000C43-N4T1G
S-1000C44-N4T1G
S-1000C45-N4T1G
S-1000C46-N4T1G
Product Code
(1) (2) (3)
PLQ
PLR
PLS
PLT
PLU
PLV
P LW
PLX
PLY
PLZ
PL2
PL3
PL4
PL5
PL6
PL7
Product Code
(1) (2) (3)
PKQ
PKR
PKS
PKT
PKU
PKV
P KW
PKX
PKY
PKZ
PK2
PK3
PK4
PK5
PK6
PK7
24 Seiko Instruments Inc.


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S-1000 Series
(2) SOT-23-5
SOT-23-5
Top view
54
(1) to (3) : Product code (refer to Product name vs. Product code)
(4) : Lot number
(1) (2) (3) (4)
1 23
Product name vs. Product code
(a) Nch open-drain output products
Product Name
Product Code
(1) (2) (3)
S-1000N15-M5T1G
PLA
S-1000N16-M5T1G
PLB
S-1000N17-M5T1G
PLC
S-1000N18-M5T1G
PLD
S-1000N19-M5T1G
PLE
S-1000N20-M5T1G
PLF
S-1000N21-M5T1G
PLG
S-1000N22-M5T1G
PLH
S-1000N23-M5T1G
PL
I
S-1000N24-M5T1G
PL J
S-1000N25-M5T1G
PLK
S-1000N26-M5T1G
PLL
S-1000N27-M5T1G
P LM
S-1000N28-M5T1G
PLN
S-1000N29-M5T1G
PLO
S-1000N30-M5T1G
PLP
(b) CMOS output products
Product Name
S-1000C15-M5T1G
S-1000C16-M5T1G
S-1000C17-M5T1G
S-1000C18-M5T1G
S-1000C19-M5T1G
S-1000C20-M5T1G
S-1000C21-M5T1G
S-1000C22-M5T1G
S-1000C23-M5T1G
S-1000C24-M5T1G
S-1000C25-M5T1G
S-1000C26-M5T1G
S-1000C27-M5T1G
S-1000C28-M5T1G
S-1000C29-M5T1G
S-1000C30-M5T1G
Product Code
(1) (2) (3)
PKA
PKB
PKC
PKD
PKE
PKF
PKG
PKH
PK
I
PK J
PKK
PKL
P KM
PKN
PKO
PKP
Product Name
S-1000N31-M5T1G
S-1000N32-M5T1G
S-1000N33-M5T1G
S-1000N34-M5T1G
S-1000N35-M5T1G
S-1000N36-M5T1G
S-1000N37-M5T1G
S-1000N38-M5T1G
S-1000N39-M5T1G
S-1000N40-M5T1G
S-1000N41-M5T1G
S-1000N42-M5T1G
S-1000N43-M5T1G
S-1000N44-M5T1G
S-1000N45-M5T1G
S-1000N46-M5T1G
Product Name
S-1000C31-M5T1G
S-1000C32-M5T1G
S-1000C33-M5T1G
S-1000C34-M5T1G
S-1000C35-M5T1G
S-1000C36-M5T1G
S-1000C37-M5T1G
S-1000C38-M5T1G
S-1000C39-M5T1G
S-1000C40-M5T1G
S-1000C41-M5T1G
S-1000C42-M5T1G
S-1000C43-M5T1G
S-1000C44-M5T1G
S-1000C45-M5T1G
S-1000C46-M5T1G
Seiko Instruments Inc.
Product Code
(1) (2) (3)
PLQ
PLR
PLS
PLT
PLU
PLV
P LW
PLX
PLY
PLZ
PL2
PL3
PL4
PL5
PL6
PL7
Product Code
(1) (2) (3)
PKQ
PKR
PKS
PKT
PKU
PKV
P KW
PKX
PKY
PKZ
PK2
PK3
PK4
PK5
PK6
PK7
25


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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
Rev.2.1_01
(3) SNT-4A
SNT-4A
Top view
14
(1) (2) (3)
23
(1) to (3):
Product code (refer to Product name vs. Product code)
Product name vs. Product code
(a) Nch open-drain output products
Product Name
Product Code
(1) (2) (3)
S-1000N15-I4T1G
PLA
S-1000N16-I4T1G
PLB
S-1000N17-I4T1G
PLC
S-1000N18-I4T1G
PLD
S-1000N19-I4T1G
PLE
S-1000N20-I4T1G
PLF
S-1000N21-I4T1G
PLG
S-1000N22-I4T1G
PLH
S-1000N23-I4T1G
PL
I
S-1000N24-I4T1G
PL J
S-1000N25-I4T1G
PLK
S-1000N26-I4T1G
PLL
S-1000N27-I4T1G
P LM
S-1000N28-I4T1G
PLN
S-1000N29-I4T1G
PLO
S-1000N30-I4T1G
PLP
(b) CMOS output products
Product Name
S-1000C15-I4T1G
S-1000C16-I4T1G
S-1000C17-I4T1G
S-1000C18-I4T1G
S-1000C19-I4T1G
S-1000C20-I4T1G
S-1000C21-I4T1G
S-1000C22-I4T1G
S-1000C23-I4T1G
S-1000C24-I4T1G
S-1000C25-I4T1G
S-1000C26-I4T1G
S-1000C27-I4T1G
S-1000C28-I4T1G
S-1000C29-I4T1G
S-1000C30-I4T1G
Product Code
(1) (2) (3)
PKA
PKB
PKC
PKD
PKE
PKF
PKG
PKH
PK
I
PK J
PKK
PKL
P KM
PKN
PKO
PKP
Product Name
S-1000N31-I4T1G
S-1000N32-I4T1G
S-1000N33-I4T1G
S-1000N34-I4T1G
S-1000N35-I4T1G
S-1000N36-I4T1G
S-1000N37-I4T1G
S-1000N38-I4T1G
S-1000N39-I4T1G
S-1000N40-I4T1G
S-1000N41-I4T1G
S-1000N42-I4T1G
S-1000N43-I4T1G
S-1000N44-I4T1G
S-1000N45-I4T1G
S-1000N46-I4T1G
Product Name
S-1000C31-I4T1G
S-1000C32-I4T1G
S-1000C33-I4T1G
S-1000C34-I4T1G
S-1000C35-I4T1G
S-1000C36-I4T1G
S-1000C37-I4T1G
S-1000C38-I4T1G
S-1000C39-I4T1G
S-1000C40-I4T1G
S-1000C41-I4T1G
S-1000C42-I4T1G
S-1000C43-I4T1G
S-1000C44-I4T1G
S-1000C45-I4T1G
S-1000C46-I4T1G
26 Seiko Instruments Inc.
Product Code
(1) (2) (3)
PLQ
PLR
PLS
PLT
PLU
PLV
P LW
PLX
PLY
PLZ
PL2
PL3
PL4
PL5
PL6
PL7
Product Code
(1) (2) (3)
PKQ
PKR
PKS
PKT
PKU
PKV
P KW
PKX
PKY
PKZ
PK2
PK3
PK4
PK5
PK6
PK7


S-1000Nxx Datasheet PDF
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2.0±0.2
1.3±0.2
4
3
0.05
12
0.16
+0.1
-0.06
0.3
+0.1
-0.05
0.4
+0.1
-0.05
No. NP004-A-P-SD-1.1
TITLE
No.
SCALE
UNIT
SC82AB-A-PKG Dimensions
NP004-A-P-SD-1.1
mm
Seiko Instruments Inc.


S-1000Nxx Datasheet PDF
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ø1.5
+0.1
-0
2.0±0.05
4.0±0.1
4.0±0.1
0.2±0.05
1.1±0.1
(0.7)
ø1.05±0.1
2.2±0.2
21
34
Feed direction
No. NP004-A-C-SD-3.0
TITLE
No.
SCALE
UNIT
SC82AB-A-Carrier Tape
NP004-A-C-SD-3.0
mm
Seiko Instruments Inc.


S-1000Nxx Datasheet PDF
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4.0±0.1 2.0±0.1
ø1.5
+0.1
-0
1.1±0.1
0.2±0.05
4.0±0.1
2.3±0.15
ø1.05±0.1
21
34
Feed direction
No. NP004-A-C-S1-2.0
TITLE
No.
SCALE
UNIT
SC82AB-A-Carrier Tape
NP004-A-C-S1-2.0
mm
Seiko Instruments Inc.


S-1000Nxx Datasheet PDF
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12.5max.
Enlarged drawing in the central part
ø13±0.2
(60°) (60°)
9.0±0.3
No. NP004-A-R-SD-1.1
TITLE
No.
SCALE
UNIT
SC82AB-A-Reel
NP004-A-R-SD-1.1
QTY.
3,000
mm
Seiko Instruments Inc.




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