Document
LESHAN RADIO COMPANY, LTD.
Bias Resistor Transistor
PNP Silicon Surface Mount Transistor with Monolithic Bias Resistor Network
zApplications Inverter, Interface, Driver
zFeatures 1) Built-in bias resistors enable the configuration of an
inverter circuit without connecting external input resistors. 2) The bias resistors consist of thin-film resistors with complete isolation to allow positive biasing of the input, and parasitic effects are almost completely eliminated. 3) Only the on / off conditions need to be set for operation, making the device design easy. 4) Higher mounting densities ca.n be achieved.
z We declare that the material of product compliance with RoHS requirements.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Supply voltage Input voltage
Output current
Power dissipation Junction temperature Storage temperature
VCC VIN IO IC(Max.) PD Tj Tstg
Limits
−50 −30 to +10
−100 −100
200 150 − 55 to +150
Unit
V V
mA
mW °C °C
LDTA143ELT1G
3
1 2 SOT–23
1 BASE
R1 R2
3 COLLECTOR
2 EMITTER
DEVICE MARKING AND RESISTOR VALUES
Device
Marking R1 (K) R2 (K)
Shipping
LDTA143ELT1G
A6J
4.7 4.7 3000/Tape & Reel
LDTA143ELT3G
A6J
4.7 4.7 10000/Tape & Reel
zExternal characteristics (Unit: mm)
Parameter
Input voltage
Output voltage Input current Output current DC current gain Input resistance Resistance ratio Transition frequency ∗ Characteristics of built-in transistor
Symbol VI(off) VI(on) VO(on) II IO(off) GI R1 R2/R1 fT ∗
Min. − −3 − − − 30
3.29 0.8 −
Typ. − −
−0.1 − − − 4.7 1
250
Max. −0.5
− −0.3 −1.8 −0.5
− 6.11 1.2
−
Unit
V
V mA µA − kΩ − MHz
Conditions VCC=−5V, IO=−100µA VO=−0.3V, IO=−20mA IO/II=−10mA/−0.5mA VI=−5V VCC=−50V, VI=0V VO=−5V, IO=−10mA
− − VCE=−10V, IE=5mA, f=100MHz
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LESHAN RADIO COMPANY, LTD.
zElectrical characteristics curves
LDTA143ELT1G
INPUT VOLTAGE : VI(on) (V)
−100 VO=−0.3V −50
−20
−10 −5 Ta=−40°C
25°C −2 100°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)
OUTPUT CURRENT : Io (A)
−10m
−5m
−2m
Ta=100°C 25°C
−1m −40°C
−500µ
VCC=−5V
−200µ −100µ −50µ
−20µ −10µ −5µ
−2µ −1µ
0 −0.5 −1.0 −1.5 −2.0 −2.5 −3.0
INPUT VOLTAGE : VI(off) (V)
Fig.2 Output current vs. input voltage (OFF characteristics)
DC CURRENT GAIN : GI
1k VO=−5V
500
200
100 Ta=100°C
50
25°C −40°C
20
10
5
2
1 −100µ −200µ −500µ −1m −2m −5m −10m −20m −50m−100m
OUTPUT CURRENT : IO (A)
Fig.3 DC current gain vs. output current
OUTPUT VOLTAGE : VO(on) (V)
−1 lO/lI=20
−500m Ta=100°C
−200m
25°C −40°C
−100m
−50m
−20m −10m −5m
−2m −1m −100µ −200µ −500µ −1m −2m
−5m −10m −20m −50m−100m
OUTPUT CURRENT : IO (A)
Fig.4 Output voltage vs. output current
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LESHAN RADIO COMPANY, LTD. LDTA143ELT1G
A L
3 BS
12
VG
C
D
H K
SOT-23
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
DIM
INCHES
MILLIMETERS
MIN MAX MIN MAX
A 0.1102 0.1197 2.80 3.04
B 0.0472 0.0551 .