LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-1/10
Bias Resistor Transistors
NPN Silicon Surface Mount Transistors
With Monolithic Bias Resistor Network
This new series of digital transistors is designed to replace a single
device and its external resistor bias network. The BRT (Bias Resistor
Transistor) contains a single transistor with a monolithic bias network
consisting of two resistors; a series base resistor and a base-emitter
resistor.The BRT eliminates these individual components by integrating
them into a single device. The use of a BRT can reduce both system
cost and board space. The device is housed in the SOT-723 package
which is designed for low power surface mount applications.
LDTC114EM3T5G
MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Rating Symbol Value Unit
Collector-Base Voltage VCBO 50 Vdc
Collector-Emitter Voltage VCEO 50 Vdc
Collector Current IC100 mAdc
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Total Device Dissipation
TA = 25°C
Derate above 25°C
PD260 (Note 1)
600 (Note 2)
2.0 (Note 1)
4.8 (Note 2)
mW
Thermal Resistance –
Junction-to-Ambient RθJA 480 (Note 1)
205 (Note 2) °C/W
Storage Temperature Range Tstg –55 to +150
°C
xx = Specific Device Code
M = Date Code
MARKING DIAGRAM
3
2
1
XX M
mW/°C
ƽSimplifies Circuit Design
ƽReduces Component Count
ƽThe SOT-723 Package can be Soldered using Wave or Reflow.
ƽAvailable in 4 mm, 8000 Unit Tape & Reel
ƽThese are Pb-Free Devices.
ƽReduces Board Space
Version 1.0
Series
SOT-723
1
2
3
PIN 3
COLLECTOR
(OUTPUT)
PIN 2
EMITTER
(GROUND)
PIN 1
BASE
(INPUT)
R1
R2
°C
TJ150
Junction Temperature
1. FR–4 @ Minimum Pad
2. FR–4 @ 1.0 x 1.0 inch Pad
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-2/10
LDTC114EM3T5G Series
DEVICE MARKING AND RESISTOR VALUES
Device Marking R1 (K) R2 (K) Package Shipping
LDTC114EM3T5G
LDTC124EM3T5G
LDTC144EM3T5G
LDTC114YM3T5G
LDTC114TM3T5G
LDTC143TM3T5G
LDTC123EM3T5G
LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
LDTC115EM3T5G
LDTC144WM3T5G
LDTC144TM3T5G
8A
8B
8C
8D
94
8F
8H
8J
8K
8L
8M
8N
8P
8T
10
22
47
10
10
4.7
2.2
4.7
4.7
22
2.2
100
47
47
10
22
47
47
∞
∞
2.2
4.7
47
47
47
100
22
∞
SOT−723
(Pb−Free) 8000/Tape & Reel
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-3/10
LDTC114EM3T5G Series
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
OFF CHARACTERISTICS
Collector−Base Cutoff Current (VCB = 50 V, IE = 0) ICBO − − 100 nAdc
Collector−Emitter Cutoff Current (VCE = 50 V, IB = 0) ICEO − − 500 nAdc
Emitter−Base Cutoff Current LDTC114EM3T5G
(VEB = 6.0 V, IC= 0) LDTC124EM3T5G
LDTC144EM3T5G
LDTC114YM3T5G
LDTC114TM3T5G
LDTC143TM3T5G
LDTC123EM3T5G
LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
LDTC115EM3T5G
LDTC144WM3T5G
LDTC144TM3T5G
IEBO −
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
0.5
0.2
0.1
0.2
0.9
1.9
2.3
1.5
0.18
0.13
0.2
0.05
0.13
0.2
mAdc
Collector−Base Breakdown Voltage (IC = 10 mA, IE = 0) V(BR)CBO 50 − − Vdc
Collector−Emitter Breakdown Voltage (Note 3)
(IC = 2.0 mA, IB = 0) V(BR)CEO 50 − − Vdc
ON CHARACTERISTICS (Note 3)
DC Current Gain LDTC114EM3T5G
(VCE = 10 V, IC= 5.0 mA) LDTC124EM3T5G
LDTC144EM3T5G
LDTC114YM3T5G
LDTC114TM3T5G
LDTC143TM3T5G
LDTC123EM3T5G
LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
LDTC115EM3T5G
LDTC144WM3T5G
LDTC144TM3T5G
hFE 35
60
80
80
160
160
8.0
15
80
80
80
80
80
160
60
100
140
140
350
350
15
30
200
150
140
150
140
350
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Collector−Emitter Saturation Voltage (IC = 10 mA, IB = 0.3 mA)
(IC= 10 mA, IB= 5 mA) LDTC123EM3T5G
(IC= 10 mA, IB= 1 mA) LDTC143TM3T5G/LDTC114TM3T5G/
LDTC143EM3T5G/LDTC143ZM3T5G/
LDTC124XM3T5G/LDTC144TM3T5G
VCE(sat) − − 0.25 Vdc
Output Voltage (on)
(VCC = 5.0 V, VB= 2.5 V, RL= 1.0 kW) LDTC114EM3T5G
LDTC124EM3T5G
LDTC114YM3T5G
LDTC114TM3T5G
LDTC143TM3T5G
LDTC123EM3T5G
LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
(VCC = 5.0 V, VB= 3.5 V, RL= 1.0 kW) LDTC144EM3T5G
LDTC144TM3T5G
(VCC = 5.0 V, VB= 5.5 V, RL= 1.0 kW) LDTC115EM3T5G
(VCC = 5.0 V, VB= 4.0 V, RL= 1.0 kW) LDTC144WM3T5G
VOL −
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
Vdc
3. Pulse Test: Pulse Width < 300 ms, Duty Cycle < 2.0%.
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-4/10
LDTC114EM3T5G Series
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
ON CHARACTERISTICS (Note 4)
Characteristic Symbol Min Typ Max Unit
Output Voltage (off) (VCC = 5.0 V, VB = 0.5 V, RL = 1.0 kW)
(VCC = 5.0 V, VB= 0.25 V, RL= 1.0 kW) LDTC143TM3T5G
LDTC143ZM3T5G
LDTC114TM3T5G
LDTC144TM3T5G
VOH 4.9 − − Vdc
Input Resistor LDTC114EM3T5G
LDTC124EM3T5G
LDTC144EM3T5G
LDTC114YM3T5G
LDTC114TM3T5G
LDTC143TM3T5G
LDTC123EM3T5G
LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
LDTC115EM3T5G
LDTC144WM3T5G
LDTC144TM3T5G
R1 7.0
15.4
32.9
7.0
7.0
3.3
1.5
3.3
3.3
15.4
1.54
70
32.9
32.9
10
22
47
10
10
4.7
2.2
4.7
4.7
22
2.2
100
47
47
13
28.6
61.1
13
13
6.1
2.9
6.1
6.1
28.6
2.86
130
61.1
61.1
kW
Resistor Ratio LDTC114EM3T5G/LDTC124EM3T5G/
LDTC144EM3T5G/LDTC115EM3T5G
LDTC114YM3T5G
LDTC143TM3T5G/LDTC114TM3T5G/LDTC144TM3T5G
LDTC123EM3T5G/LDTC143EM3T5G
LDTC143ZM3T5G
LDTC124XM3T5G
LDTC123JM3T5G
LDTC144WM3T5G
R1/R20.8
0.17
−
0.8
0.055
0.38
0.038
1.7
1.0
0.21
−
1.0
0.1
0.47
0.047
2.1
1.2
0.25
−
1.2
0.185
0.56
0.056
2.6
4. Pulse Test: Pulse Width < 300 ms, Duty Cycle < 2.0%.
Figure 1. Derating Curve
250
200
150
100
50
0
−50 0 50 100 150
TA, AMBIENT TEMPERATURE (°C)
PD, POWER DISSIPATION (MILLIWATTS)
RqJA = 480°C/W
300
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-5/10
LDTC114EM3T5G Series
TYPICAL ELECTRICAL CHARACTERISTICS − LDTC114EM3T5G
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA) hFE, DC CURRENT GAIN (NORMALIZED)
Figure 2. VCE(sat) versus IC
1002030
IC, COLLECTOR CURRENT (mA)
10
1
0.1
TA=−25°C
75°C
25°C
40 50
Figure 3. DC Current Gain
Figure 4. Output Capacitance
1
0.1
0.01
0.001 020 4050
IC, COLLECTOR CURRENT (mA)
VCE(sat), MAXIMUM COLLECTOR VOLTAGE (VOLTS)
1000
100
10 1 10 100
IC, COLLECTOR CURRENT (mA)
TA=75°C
25°C
−25°C
TA=−25°C
25°C
Figure 5. Output Current versus Input Voltage
75°C
25°C
TA=−25°C
100
10
1
0.1
0.01
0.001 01 234
Vin, INPUT VOLTAGE (VOLTS)
56 78 910
Figure 6. Input Voltage versus Output Current
50
010203040
4
3
1
2
0
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob, CAPACITANCE (pF)
75°C
VCE = 10 V
f = 1 MHz
IE = 0 V
TA = 25°C
VO = 5 V
VO = 0.2 V
IC/IB = 10
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-6/10
LDTC114EM3T5G Series
TYPICAL ELECTRICAL CHARACTERISTICS − LDTC124EM3T5G
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA) hFE, DC CURRENT GAIN (NORMALIZED)
Figure 7. VCE(sat) versus ICFigure 8. DC Current Gain
Figure 9. Output Capacitance Figure 10. Output Current versus Input Voltage
1000
10
IC, COLLECTOR CURRENT (mA)
TA=75°C
25°C
−25°C
100
101 100
75°C 25°C
100
0
Vin, INPUT VOLTAGE (VOLTS)
10
1
0.1
0.01
0.001 246810
TA=−25°C
0
IC, COLLECTOR CURRENT (mA)
100
TA=−25°C
75°C
10
1
0.1 10 20 30 40 50
25°C
Figure 11. Input Voltage versus Output Current
0.001
VCE(sat), MAXIMUM COLLECTOR VOLTAGE (VOLTS
)
TA=−25°C
75°C
25°C
0.01
0.1
1
40
IC, COLLECTOR CURRENT (mA)
020 50
50
0 10 203040
4
3
2
1
0
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob, CAPACITANCE (pF)
IC/IB = 10 VCE = 10 V
f = 1 MHz
IE = 0 V
TA = 25°C
VO = 5 V
VO = 0.2 V
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-7/10
LDTC114EM3T5G Series
TYPICAL ELECTRICAL CHARACTERISTICS − LDTC144EM3T5G
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA) hFE, DC CURRENT GAIN (NORMALIZED)
Figure 12. VCE(sat) versus IC
0246810
100
10
1
0.1
0.01
0.001
Vin, INPUT VOLTAGE (VOLTS)
TA=−25°C
75°C25°C
Figure 13. DC Current Gain
Figure 14. Output Capacitance
100
10
1
0.1
010 203040 50
IC, COLLECTOR CURRENT (mA)
Figure 15. Output Current versus Input Voltage
1000
10
IC, COLLECTOR CURRENT (mA)
TA=75°C
25°C
−25°C
100
10 1 100
25°C
75°C
50
010203040
1
0.8
0.6
0.4
0.2
0
VR, REVERSE BIAS VOLTAGE (VOLTS)
Cob, CAPACITANCE (pF)
Figure 16. Input Voltage versus Output Current
020 40 50
10
1
0.1
0.01
IC, COLLECTOR CURRENT (mA)
25°C
75°C
VCE(sat), MAXIMUM COLLECTOR VOLTAGE (VOLTS
)
VCE = 10 V
f = 1 MHz
IE = 0 V
TA = 25°C
VO = 5 V
VO = 0.2 V
IC/IB = 10
TA=−25°C
TA=−25°C
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-8/10
LDTC114EM3T5G Series
TYPICAL ELECTRICAL CHARACTERISTICS − LDTC114YM3T5G
10
1
0.1 01020304050
100
10
10246810
4
3.5
3
2.5
2
1.5
1
0.5
002468101520253035404550
VR, REVERSE BIAS VOLTAGE (VOLTS)
Vin, INPUT VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA) hFE, DC CURRENT GAIN (NORMALIZED)
Figure 17. VCE(sat) versus IC
IC, COLLECTOR CURRENT (mA)
020406080
VCE(sat), MAXIMUM COLLECTOR VOLTAGE (VOLTS)
Figure 18. DC Current Gain
1 10 100
IC, COLLECTOR CURRENT (mA)
Figure 19. Output Capacitance Figure 20. Output Current versus Input Voltage
Vin, INPUT VOLTAGE (VOLTS)
Cob , CAPACITANCE (pF)
Figure 21. Input Voltage versus Output Current
IC, COLLECTOR CURRENT (mA)
1
0.1
0.01
0.001
−25°C
25°C
TA=75°C
VCE = 10
300
250
200
150
100
50
02468 1520405060708090
f = 1 MHz
lE = 0 V
TA = 25°C
25°C
IC/IB = 10 TA=−25°C
TA=75°C25°C
−25°C
VO = 0.2 V TA=−25°C
75°C
VO = 5 V
25°C
75°C
Version 1.0
LESHAN RADIO COMPANY, LTD.
LDTC114EM3T5G_S-9/10
LDTC114EM3T5G Series
TYPICAL APPLICATIONS FOR NPN BRTs
LOAD
+12 V
Figure 22. Level Shifter: Connects 12 or 24 Volt Circuits to Logic
IN
OUT
VCC
ISOLATED
LOAD
FROM mP OR
OTHER LOGIC
+12 V
Figure 23. Open Collector Inverter:
Inverts the Input Signal Figure 24. Inexpensive, Unregulated Current Source
Version 1.0
LDTC114EM3T5G-10/10
LDTC114EM3T5G Series
PACKAGE DIMENSIONS
D
b1
E
b
e
A
L
C
H
−Y−
−X−
X0.08 (0.0032) Y
2X
E
12
3
1.0
0.039
ǒmm
inchesǓ
0.40
0.0157
0.40
0.0157
0.40
0.0157
0.40
0.0157
0.40
0.0157
PIN 1. BASE
2. EMITTER
3. COLLECTOR
DIM MIN NOM MAX
MILLIMETERS
A0.45 0.50 0.55
b0.15 0.20 0.27
b1 0.25 0.3 0.35
C0.07 0.12 0.17
D1.15 1.20 1.25
E0.75 0.80 0.85
e0.40 BSC
H1.15 1.20 1.25
L0.15 0.20 0.25
0.018 0.020 0.022
0.0059 0.0079 0.0106
0.010 0.012 0.014
0.0028 0.0047 0.0067
0.045 0.047 0.049
0.03 0.032 0.034
0.016 BSC
0.045 0.047 0.049
0.0059 0.0079 0.0098
MIN NOM MAX
INCHES
E
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH. MINIMUM LEAD THICKNESS IS THE MINIMUM
THICKNESS OF BASE MATERIAL.
4. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS.
SOT−723
SOLDERING FOOTPRINT
Version 1.0
LESHAN RADIO COMPANY, LTD.
