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

2N3550

Onsemi

PNP

SINGLE

NO

60 MHz

.4 W

.1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

200

175 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e0

2N4123RLRM

Onsemi

NPN

SINGLE

NO

250 MHz

.35 W

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

2N3860

Onsemi

NPN

SINGLE

NO

90 MHz

.62 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

.125 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

150

150 Cel

4 pF

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4123ZL1

Onsemi

NPN

SINGLE

NO

250 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N3845A

Onsemi

NPN

SINGLE

NO

120 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

125 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

e0

2N4124RLRA

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4123RL

Onsemi

NPN

SINGLE

NO

250 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N3564

Onsemi

NPN

SINGLE

NO

400 MHz

.2 W

.05 A

PLASTIC/EPOXY

.3 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

125 Cel

3.5 pF

SILICON

15 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

NOT SPECIFIED

NOT SPECIFIED

2N3856

Onsemi

NPN

SINGLE

NO

140 MHz

.62 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

18 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N3547

Onsemi

PNP

SINGLE

NO

45 MHz

.4 W

.1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

175 Cel

SILICON

60 V

TIN LEAD

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e0

2N4125RLRE

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N3548

Onsemi

PNP

SINGLE

NO

60 MHz

.4 W

.1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

175 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e0

2N2711

Onsemi

NPN

SINGLE

NO

.36 W

.03 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

30

150 Cel

SILICON

18 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N3856A

Onsemi

NPN

SINGLE

NO

140 MHz

.62 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

30 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N3721

Onsemi

NPN

SINGLE

NO

100 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

125 Cel

SILICON

18 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4122

Onsemi

PNP

SINGLE

NO

450 MHz

.2 W

.2 A

PLASTIC/EPOXY

SWITCHING

WIRE

ROUND

1

4

CYLINDRICAL

Other Transistors

150

150 Cel

SILICON

40 V

Tin/Lead (Sn/Pb)

BOTTOM

O-PBCY-W4

Not Qualified

TO-106

e0

2N2714

Onsemi

NPN

SINGLE

NO

.2 W

.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

75

125 Cel

SILICON

18 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N3549

Onsemi

PNP

SINGLE

NO

60 MHz

.4 W

.1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

175 Cel

SILICON

60 V

TIN LEAD

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e0

2N3845

Onsemi

NPN

SINGLE

NO

120 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4125RL1

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N3854A

Onsemi

NPN

SINGLE

NO

100 MHz

.2 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

150 Cel

SILICON

30 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N3843A

Onsemi

NPN

SINGLE

NO

60 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N3563

Onsemi

2N2716

Onsemi

NPN

SINGLE

NO

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

75

125 Cel

SILICON

18 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4124RL

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N4124G

Onsemi

NPN

SINGLE

NO

300 MHz

.35 W

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

150 Cel

SILICON

25 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

2N3855A

Onsemi

NPN

SINGLE

NO

130 MHz

.62 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

150 Cel

SILICON

30 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N3858

Onsemi

NPN

SINGLE

NO

90 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4386

Onsemi

NPN

SINGLE

NO

30 MHz

.62 W

.8 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e0

2N3844

Onsemi

NPN

SINGLE

NO

90 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4124RLRE

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4124RLRM

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4124RL1

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N3843

Onsemi

NPN

SINGLE

NO

60 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4125RLRA

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4124ZL1

Onsemi

NPN

SINGLE

NO

300 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

60

150 Cel

SILICON

25 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N4123RL1

Onsemi

NPN

SINGLE

NO

250 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N4123RLRA

Onsemi

NPN

SINGLE

NO

250 MHz

.35 W

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

2N3844A

Onsemi

NPN

SINGLE

NO

90 MHz

.2 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

125 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

2N4125ZL1

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N4123RLRE

Onsemi

NPN

SINGLE

NO

250 MHz

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N3854

Onsemi

NPN

SINGLE

NO

100 MHz

.2 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

150 Cel

SILICON

18 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N3859

Onsemi

NPN

SINGLE

NO

90 MHz

.2 W

.1 A

PLASTIC/EPOXY

.125 V

WIRE

ROUND

1

3

CYLINDRICAL

100

4 pF

SILICON

30 V

BOTTOM

O-PBCY-W3

TO-92

2N4125RL

Onsemi

PNP

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

25

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

2N3855

Onsemi

NPN

SINGLE

NO

130 MHz

.62 W

.1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

150 Cel

SILICON

18 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N4123RLRMG

Onsemi

NPN

SINGLE

NO

250 MHz

1.5 W

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

30 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

NOT SPECIFIED

235

MPS2907ARLRP

Onsemi

PNP

SINGLE

NO

200 MHz

.36 W

.6 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

60 V

45 ns

100 ns

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

NSBA143EDXV6T1G

Onsemi

PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

.5 W

.1 A

PLASTIC/EPOXY

FLAT

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

15

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

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