Onsemi Small Signal Bipolar Junction Transistors (BJT) 2,400+

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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

BF421RLRA

Onsemi

PNP

SINGLE

NO

60 MHz

.5 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

50

150 Cel

SILICON

300 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

30C02MH-TL-H

Onsemi

NPN

SINGLE

YES

540 MHz

.7 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

300

SILICON

30 V

DUAL

R-PDSO-F3

MPSW45RL1

Onsemi

NPN

DARLINGTON

NO

100 MHz

1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

4000

150 Cel

SILICON

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

MUN2231T1G

Onsemi

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

.338 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

8

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

40

260

CPH3140-TL-E

Onsemi

Tin/Bismuth (Sn/Bi)

1

e6

30

260

NSBC115EDXV6T1

Onsemi

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.5 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

80

SILICON

50 V

TIN

DUAL

R-PDSO-F6

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

260

NSBC144EF3T5G

Onsemi

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

.297 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

80

150 Cel

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-F3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

NOT SPECIFIED

NOT SPECIFIED

BC373RL1

Onsemi

NPN

DARLINGTON

NO

200 MHz

.625 W

1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

8000

150 Cel

SILICON

80 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-226AA

e0

235

BC167A

Onsemi

NPN

SINGLE

NO

85 MHz

.5 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

.6 V

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

120

150 Cel

6 pF

SILICON

45 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

NOT SPECIFIED

NOT SPECIFIED

TS 16949

EMT2DXV6T5G

Onsemi

PNP

SEPARATE, 2 ELEMENTS

YES

140 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

120

SILICON

60 V

TIN

DUAL

R-PDSO-F6

1

e3

30

260

NSBA123TF3T5G

Onsemi

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

.297 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

160

150 Cel

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-F3

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

NOT SPECIFIED

NOT SPECIFIED

2N3905RLRM

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

15

150 Cel

SILICON

40 V

70 ns

260 ns

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N5551BU-C

Onsemi

NPN

SINGLE

NO

100 MHz

.625 W

.6 A

PLASTIC/EPOXY

AMPLIFIER

.2 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

.625 W

30

150 Cel

6 pF

SILICON

160 V

-55 Cel

BOTTOM

O-PBCY-T3

TO-92

BC449ARL

Onsemi

PNP

SINGLE

NO

200 MHz

.3 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

100 V

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

MPSA14RLRM

Onsemi

NPN

DARLINGTON

NO

125 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

20000

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

NSBC143EPDXV6T1

Onsemi

NPN AND PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.5 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

15

SILICON

50 V

TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

BDB02CRLRE

Onsemi

PNP

SINGLE

NO

50 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

80 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

KSB1116S-L

Onsemi

PNP

SINGLE

NO

120 MHz

.75 W

1 A

PLASTIC/EPOXY

SWITCHING

.3 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

.75 W

300

150 Cel

25 pF

SILICON

50 V

BOTTOM

O-PBCY-T3

TO-92

BC328RLRM

Onsemi

PNP

SINGLE

NO

260 MHz

.8 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

100

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4264RL1

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

40

150 Cel

SILICON

15 V

25 ns

35 ns

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

KSA1156Y

Onsemi

PNP

SINGLE

NO

10 W

.5 A

PLASTIC/EPOXY

SWITCHING

1 V

THROUGH-HOLE

RECTANGULAR

1

3

FLANGE MOUNT

1 W

100

150 Cel

SILICON

400 V

1000 ns

5000 ns

SINGLE

R-PSFM-T3

TO-126

MPSA77RLRAG

Onsemi

PNP

DARLINGTON

NO

125 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

10000

150 Cel

SILICON

60 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

BC447G

Onsemi

NPN

SINGLE

NO

200 MHz

1.5 W

.3 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

50

150 Cel

SILICON

80 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-226AA

e1

260

0785-MMBT2484

Onsemi

NPN

SINGLE

YES

.1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

250

150 Cel

SILICON

60 V

DUAL

R-PDSO-G3

LOW NOISE

RA102C

Onsemi

PNP

YES

.2 W

.1 A

BIP General Purpose Small Signal

50

NUS2401SNT1G

Onsemi

NPN AND PNP

COMPLEX

YES

.35 W

.2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

3

6

SMALL OUTLINE

Other Transistors

150

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT IN BIAS RESISTORS

e3

30

260

SFMUN2211T1G

Onsemi

NPN

YES

.338 W

.1 A

1

BIP General Purpose Small Signal

35

SILICON

TIN

e3

260

BC489ARL1

Onsemi

NPN

SINGLE

NO

200 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

100

150 Cel

SILICON

80 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

BF274

Onsemi

UMC3NT1G

Onsemi

NPN AND PNP

COMMON BASE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.15 W

.1 A

PLASTIC/EPOXY

SWITCHING

.25 V

GULL WING

RECTANGULAR

2

5

SMALL OUTLINE

BIP General Purpose Small Signal

35

150 Cel

SILICON

50 V

-65 Cel

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G5

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

40

260

KSC945GTA-Y

Onsemi

NPN

SINGLE

NO

300 MHz

.25 W

.15 A

PLASTIC/EPOXY

AMPLIFIER

.3 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

120

150 Cel

2.5 pF

SILICON

50 V

BOTTOM

O-PBCY-T3

TO-92

BFW70

Onsemi

MCH6536-TL-E

Onsemi

NPN AND PNP

SEPARATE, 2 ELEMENTS

YES

330 MHz

.7 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

300

SILICON

15 V

Tin/Bismuth (Sn/Bi)

DUAL

R-PDSO-F6

1

e6

MPS2222ARLG

Onsemi

NPN

SINGLE

NO

300 MHz

.625 W

.6 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

150 Cel

SILICON

40 V

35 ns

285 ns

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

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e1

40

260

MSA1162YT1G

Onsemi

PNP

SINGLE

YES

80 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

120

150 Cel

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

NSBA115EDXV6T5

Onsemi

PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.5 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

80

SILICON

50 V

TIN

DUAL

R-PDSO-F6

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

260

BC237CRLRA

Onsemi

NPN

SINGLE

NO

200 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

380

150 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

BC373RLRM

Onsemi

NPN

DARLINGTON

NO

200 MHz

1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

8000

150 Cel

SILICON

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

NSBC124XPDXV6T1

Onsemi

NPN AND PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.5 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

80

SILICON

50 V

TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 2.14

e3

30

260

KST14

Onsemi

NPN

DARLINGTON

YES

125 MHz

.3 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

TIN LEAD

DUAL

R-PDSO-G3

Not Qualified

e0

S2SA1774G

Onsemi

PNP

SINGLE

YES

140 MHz

.15 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

120

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

e3

30

260

AEC-Q101

FSB749

Onsemi

PNP

SINGLE

YES

100 MHz

.5 W

3 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

15

150 Cel

SILICON

25 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

BC237ARL1

Onsemi

NPN

SINGLE

NO

200 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

120

150 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

BF421ZL1G

Onsemi

PNP

SINGLE

NO

60 MHz

.83 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

50

150 Cel

SILICON

300 V

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

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e1

40

260

BC447RL

Onsemi

PNP

SINGLE

NO

200 MHz

.3 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

50

150 Cel

SILICON

80 V

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

30A01C

Onsemi

50A02SS-TL-E

Onsemi

TIN BISMUTH

1

e6

30

260

UMC5NT1G

Onsemi

NPN AND PNP

COMMON BASE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.15 W

.1 A

PLASTIC/EPOXY

SWITCHING

.25 V

GULL WING

RECTANGULAR

2

5

SMALL OUTLINE

BIP General Purpose Small Signal

80

150 Cel

SILICON

50 V

-65 Cel

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G5

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

40

260

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