Bias Resistor Transistor
Description
LESHAN RADIO COMPANY, LTD.
Bias Resistor Transistor
NPN Silicon Surface Mount Transistor with Monolithic Bias Resistor Network
LDTC143ZWT1G
• Applications
Inverter, Interface, Driver
• Features
1) Built-in bias resistors enable the configuration of an inverter circuit without connecting external input resistors (see equivalent circuit).
2) The bias resistors consist of thin-film resistors with complete isolation to allow positive biasing of the input.
They also have the advantage of almost completely eliminating parasitic effects.
3) Only the on/off conditions need to be set for operation, making the device design easy.
• We declare that the material of product compliance with
RoHS requirements.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Supply voltage Input voltage Output current Power dissipation Junction temperature Storage temperature
Symbol
VCC VIN IC PD Tj Tstg
Limits
50 −5 to +30
100 200 150 −55 to +150
Unit
V V mA mW C C
3
1 2
SOT–323 (SC–70)
1 BASE
R1 R2
3 COLLECTOR
2 EMITTER
DEVICE MARKING AND RESISTOR VALUES
Device
Marking R1 (K) R2 (K)
Shipping
LDTC143ZWT1G
8K
4.
7 47 3000/Tape & Reel
LDTC143ZWT3G
8K
4.
7 47 10000/Tape & Reel
zElectrical characteristics (Ta=25°C)
Parameter
Symbol Min.
Input voltage
VI(off) VI(on)
− 1.
3
Output voltage
VO(on)
−
Input current
II −
Output current
IO(off)
−
DC current gain
GI 80
Input resistance
R1 3.
29
Resistance ratio
R2/R1 8
Transition frequency
fT ∗ −
∗ Characteristics of built-in transistor
Typ.
− − 0.
1 − − − 4.
7 10
250
Max.
0.
5 − 0.
3 1.
8 0.
5 − 6.
11 12 −
Unit
V
V mA µA − kΩ − MHz
Conditions VCC=5V, IO=100µA VO=0.
3V, IO=5mA IO/II=5mA/0.
25mA
VI=5V
VCC=50V, VI=0V VO=5V, IO=10mA
− − VCE=10V, IE= −5mA, f=100MHz
1/3
zElectrical characteristic curves
INPUT VOLTAGE : VI(on) (V)
100 VO=0.
3V
50
20 10
5
Ta= −40°C
2
25°C 100°C
1
500m
200m
100m 100µ 200µ 500µ 1m 2m 5m 10m 20m 50m 100m
OUTPUT CURRENT : IO (A)
Fig.
1 Input voltage vs.
output current (ON characteristics)
OUTPU...
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