Document
LESHAN RADIO COMPANY, LTD.
Bias Resistor Transistor
PNP Silicon Surface Mount Transistor with Monolithic Bias Resistor Network
• 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)
Supply voltage Input voltage
Parameter
Output current
Symbol VCC VI IO
IC(Max.)
Limits −50 −40 to +10 −30
−100
Power dissipation
PD 200
Junction temperature
Tj 150
Storage temperature
Tstg
−55 to +150
DEVICE MARKING AND RESISTOR VALUES
Device
Marking R1 (K) R2 (K)
Shipping
LDTA124ELT1G A6B 22
22 3000/Tape & Reel
LDTA124ELT3G A6B 22
22 10000/Tape & Reel
Unit V V
mA
mW °C °C
LDTA124ELT1G
3
1 2 SOT–23
1 BASE
R1 R2
3 COLLECTOR
2 EMITTER
zElectrical characteristics (T 25°C)
Parameter
Symbol
Input voltage
VI(off) VI(on)
Output voltage
VO(on)
Input current
II
Output current
IO(off)
DC current gain
GI
Input resistance
R1
Resistance ratio
R2/R1
Transition frequency
fT ∗
∗Characteristics of built-in transistor.
Min. − −3 − − − 56
15.4 0.8 −
Typ. − −
−0.1 − − − 22 1
250
Max. −0.5
− −0.3 −0.36 −0.5
− 28.6 1.2
−
Unit
V
V mA µA − kΩ − MHz
Conditions VCC=−5V, IO=−100µA VO=−0.2V, IO=−5mA IO/II=−10mA/−0.5mA VI=−5V VCC=−50V, VI=0V VO=−5V, IO=−5mA
− − VCE=−10V, IE=5mA, f=100MHz
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LESHAN RADIO COMPANY, LTD. LDTA124ELT1G
zElectrical characteristic curves
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 VCC=−5V
−2m Ta=100°C −1m 25°C −500µ −40°C
−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 Ta=100°C 25°C
200 −40°C 100
50
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. LDTA124ELT1G
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 1.20 1.40
C 0.0350 0.0440 0.89 1.11
D 0.0150 0.0200 0.37 0.50
G 0.0701 0.0807 1.78 2.04
H 0.0005 0.0040 0.013 0.100
J 0.0034 0.0070 0.085 0.177
K 0.0140 0.0285 0.35 0.69
J L 0.0350 0.0401 0.89 1.02
S 0.0830 0.1039 2.10 2.64
V 0.0177 0.0236 0.45 0.60
0.037 0.95
0.035 0.9
0.037 0.95
0.079 2.0
0.031 0.8
inches mm
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.