1.2 A Small Signal Bipolar Junction Transistors (BJT) 45

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Part RoHS Manufacturer Polarity or Channel Type Configuration Surface Mount Nominal Transition Frequency (fT) Maximum Power Dissipation (Abs) Maximum Collector Current (IC) Package Body Material Transistor Application Maximum Rise Time (tr) Maximum VCEsat Minimum DS Breakdown Voltage Terminal Form Package Shape Operating Mode No. of Elements Maximum Fall Time (tf) No. of Terminals Package Style (Meter) Sub-Category Field Effect Transistor Technology Maximum Power Dissipation Ambient Minimum DC Current Gain (hFE) Maximum Operating Temperature Maximum Collector-Base Capacitance Transistor Element Material Maximum Collector-Emitter Voltage Maximum Turn On Time (ton) Minimum Operating Temperature Maximum Turn Off Time (toff) Terminal Finish Maximum Drain-Source On Resistance Maximum Drain Current (ID) Terminal Position JESD-30 Code Moisture Sensitivity Level (MSL) Case Connection Qualification Additional Features JEDEC-95 Code JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Maximum Feedback Capacitance (Crss) Reference Standard

BCV27

Onsemi

NPN

DARLINGTON

YES

220 MHz

.25 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

30 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

BC517_D74Z

Fairchild Semiconductor

NPN

DARLINGTON

NO

.625 W

1.2 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

30000

150 Cel

SILICON

30 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

BC517-D74Z

Onsemi

NPN

DARLINGTON

NO

.625 W

1.2 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

30000

150 Cel

SILICON

30 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

MPSA63

Onsemi

PNP

DARLINGTON

NO

125 MHz

.625 W

1.2 A

PLASTIC/EPOXY

1.5 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

.625 W

10000

150 Cel

SILICON

-55 Cel

Tin/Lead (Sn/Pb)

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

30

235

BCP56

Onsemi

NPN

SINGLE

YES

1 W

1.2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

25

150 Cel

SILICON

80 V

TIN

DUAL

R-PDSO-G4

1

COLLECTOR

Not Qualified

TO-261AA

e3

30

260

BCV26

Onsemi

PNP

DARLINGTON

YES

220 MHz

.3 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

30 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

PZTA64

Onsemi

PNP

DARLINGTON

YES

125 MHz

1.5 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

MATTE TIN

DUAL

R-PDSO-G4

1

COLLECTOR

Not Qualified

e3

30

260

2N3724A

Texas Instruments

NPN

SINGLE

NO

300 MHz

1 W

1.2 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

175 Cel

SILICON

30 V

30 ns

50 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH CURRENT DRIVER

TO-39

NOT SPECIFIED

NOT SPECIFIED

2N3554

Texas Instruments

NPN

SINGLE

NO

150 MHz

.8 W

1.2 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

175 Cel

SILICON

30 V

50 ns

105 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-39

NOT SPECIFIED

NOT SPECIFIED

2N3725A

Texas Instruments

NPN

SINGLE

NO

300 MHz

1 W

1.2 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

175 Cel

SILICON

50 V

30 ns

50 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH CURRENT DRIVER

TO-39

NOT SPECIFIED

NOT SPECIFIED

2N3036

Texas Instruments

NPN

SINGLE

NO

50 MHz

.8 W

1.2 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

200 Cel

SILICON

80 V

180 ns

1200 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-39

NOT SPECIFIED

NOT SPECIFIED

FMBA14

Onsemi

NPN

2 BANKS, DARLINGTON

YES

200 MHz

1.2 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

30 V

TIN

DUAL

R-PDSO-G6

1

Not Qualified

e3

30

260

NZT6728

Onsemi

PNP

SINGLE

YES

50 MHz

1 W

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

1 W

20

150 Cel

30 pF

SILICON

60 V

Tin/Lead (Sn/Pb)

DUAL

R-PDSO-G4

COLLECTOR

Not Qualified

TO-261

e0

MPSW3725

Onsemi

NPN

SINGLE

NO

250 MHz

1 W

1.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

40 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

e3

TN6728A

Onsemi

PNP

SINGLE

NO

50 MHz

1 W

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

150 Cel

30 pF

SILICON

60 V

Tin/Lead (Sn/Pb)

BOTTOM

O-PBCY-T3

Not Qualified

TO-226AE

e0

TN6718A

Onsemi

NPN

SINGLE

NO

1 W

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

150 Cel

SILICON

100 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

e3

TN6725A

Onsemi

NPN

DARLINGTON

NO

1.2 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

4000

150 Cel

SILICON

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

e1

NZT6717

Onsemi

NPN

SINGLE

YES

1 W

1.2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

50

150 Cel

SILICON

80 V

MATTE TIN

DUAL

R-PDSO-G4

1

COLLECTOR

Not Qualified

e3

30

260

TN6717A

Onsemi

NPN

SINGLE

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

50

150 Cel

SILICON

80 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

e3

MPSA65

Onsemi

PNP

DARLINGTON

NO

100 MHz

.625 W

1.2 A

PLASTIC/EPOXY

1.5 V

WIRE

ROUND

1

3

CYLINDRICAL

.625 W

20000

150 Cel

SILICON

-55 Cel

BOTTOM

O-PBCY-W3

TO-92

2SA1734R1G

Onsemi

PNP

SINGLE

YES

100 MHz

1.56 W

1.2 A

PLASTIC/EPOXY

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

Not Qualified

MMBTA63

Onsemi

PNP

DARLINGTON

YES

125 MHz

.35 W

1.2 A

PLASTIC/EPOXY

1.5 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

10000

150 Cel

SILICON

-55 Cel

TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

MMBT6427

Onsemi

NPN

DARLINGTON

YES

.225 W

1.2 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

14000

150 Cel

SILICON

40 V

Tin (Sn)

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

PZTA14

Onsemi

NPN

DARLINGTON

YES

125 MHz

1 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

30 V

MATTE TIN

DUAL

R-PDSO-G4

1

COLLECTOR

Not Qualified

e3

30

260

2SC4491

Onsemi

NPN

DARLINGTON WITH BUILT-IN DIODE

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

1000

SILICON

50 V

Tin/Copper/Silver/Nickel (Sn/Cu/Ag/Ni)

SINGLE

R-PSIP-T3

Not Qualified

2SC3070-AE

Onsemi

NPN

SINGLE

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

800

SILICON

25 V

Tin/Copper/Silver/Nickel (Sn/Cu/Ag/Ni)

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

2SC4491-AN

Onsemi

NPN

DARLINGTON WITH BUILT-IN DIODE

NO

1.2 A

PLASTIC/EPOXY

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

1000

SILICON

50 V

Tin/Copper/Silver/Nickel (Sn/Cu/Ag/Ni)

SINGLE

R-PSIP-T3

Not Qualified

PZTA65

Onsemi

NPN

DARLINGTON

YES

100 MHz

1 W

1.2 A

PLASTIC/EPOXY

1.5 V

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

20000

150 Cel

SILICON

-55 Cel

DUAL

R-PDSO-G4

2SA1734T2G

Onsemi

PNP

SINGLE

YES

100 MHz

1.56 W

1.2 A

PLASTIC/EPOXY

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

SILICON

30 V

TIN

SINGLE

R-PSSO-F3

1

Not Qualified

e3

2SC4169

Onsemi

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

1000

SILICON

50 V

Tin/Copper/Silver/Nickel (Sn/Cu/Ag/Ni)

BOTTOM

O-PBCY-T3

Not Qualified

BUILT-IN BIAS RESISTOR

TO-226

2SC4169-AF

Onsemi

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

1000

SILICON

50 V

Tin/Silver/Copper/Nickel (Sn/Ag/Cu/Ni)

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

e2

PZTA63

Onsemi

PNP

DARLINGTON

YES

125 MHz

1 W

1.2 A

PLASTIC/EPOXY

1.5 V

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

10000

150 Cel

SILICON

-55 Cel

DUAL

R-PDSO-G4

COLLECTOR

MMBTA64

Onsemi

PNP

DARLINGTON

YES

125 MHz

.225 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

2SC4169-AE

Onsemi

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

NO

1.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

1000

SILICON

50 V

Tin/Copper/Silver/Nickel (Sn/Cu/Ag/Ni)

BOTTOM

O-PBCY-T3

Not Qualified

TO-226

MMBTA65

Onsemi

PNP

DARLINGTON

YES

100 MHz

.35 W

1.2 A

PLASTIC/EPOXY

1.5 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

20000

150 Cel

SILICON

-55 Cel

DUAL

R-PDSO-G3

MMBTA13

Onsemi

NPN

DARLINGTON

YES

125 MHz

.35 W

1.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

10000

150 Cel

SILICON

30 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

HN4B101J(TE85L)

Toshiba

NPN AND PNP

YES

.85 W

1.2 A

BIP General Purpose Small Signals

200

150 Cel

HN4B101J

Toshiba

NPN AND PNP

COMMON EMITTER, 2 ELEMENTS

YES

.85 W

1.2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

2

5

SMALL OUTLINE

BIP General Purpose Small Signal

125

150 Cel

SILICON

30 V

DUAL

R-PDSO-G5

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

TPC6D03

Toshiba

PNP

SINGLE WITH BUILT-IN DIODE

YES

.6 W

1.2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

85

150 Cel

SILICON

20 V

DUAL

R-PDSO-G6

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

HN4B101J(TE85L,F)

Toshiba

NPN AND PNP

YES

.85 W

1.2 A

BIP General Purpose Small Signals

200

150 Cel

2SA1734TE12L

Toshiba

PNP

SINGLE

YES

100 MHz

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

2SA1734TE12R

Toshiba

PNP

SINGLE

YES

100 MHz

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

2SC4539

Toshiba

NPN

SINGLE

YES

100 MHz

.5 W

1.2 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

2SC4539TE12R

Toshiba

NPN

SINGLE

YES

100 MHz

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

2SC4539TE12L

Toshiba

NPN

SINGLE

YES

100 MHz

1.2 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

40

150 Cel

SILICON

30 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

Small Signal Bipolar Junction Transistors (BJT)

Small Signal Bipolar Junction Transistors (BJT) are electronic devices used in low-power applications to amplify and switch small signals. They are commonly used in applications such as audio amplifiers, signal processing, and low-power digital circuits.

Small Signal BJTs are designed to handle low-power levels and operate at low to medium frequencies, typically in the range of a few Hz to several MHz. They have a high gain and low noise figure, making them suitable for small signal amplification.

The Small Signal BJT consists of an emitter, base, and collector region, and works by controlling the flow of majority charge carriers (electrons or holes) between the emitter and collector through the base region. When a voltage is applied to the base-emitter junction, a small current flows through the base, allowing a larger current to flow from the emitter to the collector.

Proper use of Small Signal BJTs is important to ensure optimal performance, reliability, and compatibility with other components in the circuit. Small Signal BJTs are often used in conjunction with other components, such as capacitors and resistors, to form complete low-power electronic circuits.B395