DTD143EK
Datasheet

NPN 500mA 50V Digital Transistors (Bias Resistor Built-in Transistors)
lOutline
Parameter

Value

VCC

50V500mA
4.7kW
4.7kW

IC(MAX.)
R1
R2

SMT3
OUT
IN
GND

DTD143EK
SOT-346 (SC-59)

lFeatures
1) Built-In Biasing Resistors, R1 = R2 = 4.7kW.
2) Built-in bias resistors enable the configuration oflInner circuit

an inverter circuit without connecting external
input resistors (see inner circuit).
3) The bias resistors consist of thin-film resistors
with complete isolation to allow negative biasingof the input. They also have the advantage ofcompletely eliminating parasitic effects.
4) Only the on/off conditions need to be set foroperation, making the circuit design easy.
5) Complementary PNP Types :DTB143EK
6) Lead Free/RoHS Compliant.
lApplication
Switching circuit, Inverter circuit, Interface circuit,
Driver circuit

lPackaging specifications
Part No.
DTD143EK

Package

Packagesize(mm)Taping
code

SMT3

2928

T146

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1/5

BasicReel size Tape widthordering(mm)(mm)
unit (pcs)
1808

3,000Marking
F232012.07 - Rev.D

Data Sheet

DTD143EK
lAbsolute maximum ratings (Ta = 25°C)
Parameter

SymbolValues

Unit

Supply voltage

VCC50V

Input voltage

VIN-10 to +30V

Collector current

IC*1500mA

Power dissipation

PD *2200mW

Junction temperature

Tj

150°C

Range of storage temperature

Tstg-55 to +150°C

lElectrical characteristics(Ta = 25°C)
Parameter

SymbolConditions

Min.

Typ.

Max.

Unit

VI(off)

VCC = 5V, IO = 100mA--0.5

VI(on)VO = 0.3V, IO = 20mA

3.0--Output voltage

VO(on)

IO / II = 50mA / 2.5mA-0.1

0.3V

Input current

IIVI = 5V-

-

1.8mA

Output current

IO(off)

VCC = 50V, VI = 0V--0.5mA

DC current gain

GIVO = 5V, IO = 50mA

47---

Input resistance

R1-

3.29

4.7

6.11

kW

Resistance ratio

R2/R1-

0.8

1

1.2

-

Transition frequency

fT *1

VCE = 10V, IE = -50mA,
f = 100MHz

-200-

MHz

Input voltage

V*1 Characteristics of built-in transistor*2 Each terminal mounted on a reference footprint

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2/5

2012.07 - Rev.D

Data Sheet

DTD143EK
lElectrical characteristic curves(Ta = 25°C)

Fig.2 Output current vs. input voltage(OFF characteristics)

INPUT VOLTAGE : VI(on) [V]OUTPUT CURRENT : IO [A]Fig.1 Input voltage vs. output current(ON characteristics)

OUTPUT CURRENT : IO [mA]

INPUT VOLTAGE : VI(off)[V]Fig.4 DC current gain vs. output current

Fig.3 Output current vs. output voltage
II= 2.0mA

500

1.8mA

Ta=25ºC
400

1.4mA
1.2mA

300

1.0mA
0.8mA

2000.6mA

1000.4mA

00.2mA
0A

0510OUTPUT CURRENT : IO [mA]

OUTPUT VOLTAGE : VO [V]www.rohm.com© 2012 ROHM Co., Ltd. All rights reserved.

DC CURRENT GAIN : GI

OUTPUT CURRENT : IO [mA]

1.6mA

3/5

2012.07 - Rev.D

Data Sheet

DTD143EK
lElectrical characteristic curves(Ta = 25°C)

OUTPUT VOLTAGE : VO(on) [V]

Fig.5 Output voltage vs. output current

OUTPUT CURRENT : IO [mA]

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4/5

2012.07 - Rev.D

Data Sheet

DTD143EKlDimensions (Unit : mm)
D

SMT3AcLp

L1EHEQ

eA3bx

S A

A1

l1A

e1

eS
b2

Patterm of terminal position areas
DIMA
A1
A3bc
DE
eHE
L1
Lp
Qxy

MILIMETERS
MIN
MAX
1.00
1.30
0.00
0.10
0.25
0.35
0.50
0.09
0.25
2.80
3.00
1.50
1.80
0.95
2.60
3.00
0.30
0.60
0.40
0.70
0.20
0.30
0.10
0.10

DIM
e1b2
l1

INCHES
MIN
0MAX
0.051
0.004
0.01

0.014
0.004
0.11
0.059

0.02
0.01
0.118
0.071
0.04

0.102
0.012
0.016
0.008
-MILIMETERSMINMAX
2.10
0.60
0.90

0.118
0.024
0.028
0.012
0.004
0.004
INCHESMINMAX
0.08

-

0.024
0.035

Dimension in mm/incheswww.rohm.com© 2012 ROHM Co., Ltd. All rights reserved.

5/5

2012.07 - Rev.D

Notice

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R1120A