LESHAN RADIO COMPANY, LTD.
Bias Resistor Transistor
PNP Silicon Surface Mount Transistor
with Monolithic Bias Resistor Network
Applications
Inverter, Interface, Driver
3
LDTA143ELT1G
Features
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 can be achieved.
We declare that the material of product compliance with
RoHS requirements.
1
BASE
1
2
SOT–23
R1
R2
3
COLLECTOR
Absolute maximum ratings
(Ta=25°C)
Parameter
Symbol
V
CC
V
IN
I
O
I
C(Max.)
P
D
Tj
Tstg
Limits
−50
−30
to
+10
−100
−100
200
150
−
55 to
+150
Unit
V
V
mA
mW
°C
°C
2
EMITTER
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
DEVICE MARKING AND RESISTOR VALUES
Device
LDTA143ELT1G
LDTA143ELT3G
Marking
A6J
A6J
R1 (K)
4.7
4.7
R2 (K)
4.7
4.7
Shipping
3000/Tape & Reel
10000/Tape & Reel
External characteristics
(Unit: mm)
Parameter
Symbol
V
I(off)
V
I(on)
V
O(on)
I
I
I
O(off)
G
I
R
1
R
2
/R
1
f
T
∗
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
V
CC
=−5V,
I
O
=−100µA
V
O
=−0.3V,
I
O
=−20mA
I
O
/I
I
=−10mA/−0.5mA
V
I
=−5V
V
CC
=−50V,
V
I
=0V
V
O
=−5V,
I
O
=−10mA
−
−
V
CE
=−10V,
I
E
=5mA,
f=100MHz
Input voltage
Output voltage
Input current
Output current
DC current gain
Input resistance
Resistance ratio
Transition frequency
∗
Characteristics of built-in transistor
1/3
LESHAN RADIO COMPANY, LTD.
LDTA143ELT1G
Electrical characteristics curves
−100
−50
INPUT VOLTAGE : V
I(on)
(V)
V
O
=−0.3V
OUTPUT CURRENT : Io
(A)
−10m
−5m
Ta=100°C
25°C
−1m
−40°C
−500µ
−2m
−200µ
−100µ
−50µ
−20µ
−10µ
−5µ
−2µ
−1µ
0
V
CC
=−5V
−20
−10
−5
−2
−1
−500m
−200m
−100m
−100µ −200µ −500µ −1m −2m
−5m −10m −20m −50m−100m
Ta=−40°C
25°C
100°C
−0.5
−1.0
−1.5
−2.0
−2.5
−3.0
OUTPUT CURRENT : I
O
(A)
INPUT VOLTAGE : V
I(off)
(V)
Fig.1 Input voltage vs. output current
(ON characteristics)
Fig.2 Output current vs. input voltage
(OFF characteristics)
1k
500
V
O
=−5V
OUTPUT VOLTAGE : V
O(on)
(V)
−1
−500m
−200m
−100m
−50m
−20m
−10m
−5m
−2m
Ta=100°C
25°C
−40°C
l
O
/l
I
=20
DC CURRENT GAIN : G
I
200
100
50
20
10
5
2
1
−100µ −200µ −500µ −1m −2m
−5m −10m −20m −50m−100m
Ta=100°C
25°C
−40°C
−1m
−100µ −200µ −500µ −1m −2m
−5m −10m −20m −50m−100m
OUTPUT CURRENT : I
O
(A)
OUTPUT CURRENT : I
O
(A)
Fig.3 DC current gain vs. output
current
Fig.4 Output voltage vs. output
current
2/3
LESHAN RADIO COMPANY, LTD.
LDTA143ELT1G
SOT-23
NOTES:
A
L
3
1
V
G
2
B S
DIM
A
B
C
D
G
H
J
J
K
L
S
V
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M,1982
2. CONTROLLING DIMENSION: INCH.
INCHES
MIN
MAX
0.1102
0.1197
0.0472
0.0551
0.0350
0.0440
0.0150
0.0200
0.0701
0.0807
0.0005
0.0040
0.0034
0.0140
0.0350
0.0830
0.0177
0.0070
0.0285
0.0401
0.1039
0.0236
MILLIMETERS
MIN
MAX
2.80
3.04
1.20
1.40
0.89
1.11
0.37
0.50
1.78
2.04
0.013
0.100
0.085
0.35
0.89
2.10
0.45
0.177
0.69
1.02
2.64
0.60
C
D
H
K
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
3/3
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