NO 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

2N4125TFR

Fairchild Semiconductor

PNP

SINGLE

NO

.35 W

.2 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

30 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

2N4401RP

Fairchild Semiconductor

NPN

SINGLE

NO

250 MHz

.625 W

.6 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

40 V

35 ns

255 ns

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2N4403RLRA

Onsemi

PNP

SINGLE

NO

200 MHz

.35 W

.6 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

40 V

35 ns

255 ns

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

2N4403TF

Onsemi

PNP

SINGLE

NO

200 MHz

.35 W

.6 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

40 V

35 ns

255 ns

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

2N5172PBFREE

Central Semiconductor

NPN

SINGLE

NO

200 MHz

.625 W

.1 A

PLASTIC/EPOXY

.25 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

.625 W

100

150 Cel

13 pF

SILICON

25 V

-65 Cel

MATTE TIN OVER NICKEL

BOTTOM

O-PBCY-T3

TO-92

e3

2N5551RLRPG

Onsemi

NPN

SINGLE

NO

100 MHz

.35 W

.6 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

30

150 Cel

SILICON

160 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

2PC1815Y,412

NXP Semiconductors

NPN

SINGLE

NO

80 MHz

.5 W

.15 A

PLASTIC/EPOXY

SWITCHING

.3 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

120

150 Cel

3.5 pF

SILICON

50 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

2SC945A

Renesas Electronics

NPN

SINGLE

NO

250 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

90

SILICON

50 V

BOTTOM

O-PBCY-T3

1

Not Qualified

TO-92

BC32740

Fairchild Semiconductor

PNP

SINGLE

NO

100 MHz

.625 W

.8 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

170

150 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

BC517ZL1

Onsemi

NPN

DARLINGTON

NO

200 MHz

1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

30000

150 Cel

SILICON

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-226AA

e0

235

BC549BBK

Diotec Semiconductor Ag

NPN

SINGLE

NO

300 MHz

.1 A

PLASTIC/EPOXY

WIRE

ROUND

1

3

CYLINDRICAL

200

150 Cel

SILICON

30 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

NOT SPECIFIED

NOT SPECIFIED

BC560CZL1

Onsemi

PNP

SINGLE

NO

250 MHz

.625 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

380

150 Cel

SILICON

45 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

235

BC560CZL1G

Onsemi

PNP

SINGLE

NO

250 MHz

.625 W

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

380

150 Cel

SILICON

45 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

LOW NOISE

TO-92

e1

260

BC636

Onsemi

PNP

SINGLE

NO

150 MHz

.8 W

.5 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

45 V

-55 Cel

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

BC639ZL1G

Onsemi

NPN

SINGLE

NO

200 MHz

.625 W

1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

80 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-226

e1

260

BCY59-X

Motorola

NPN

SINGLE

NO

200 MHz

.2 A

METAL

.7 V

WIRE

ROUND

1

3

CYLINDRICAL

1 W

380

200 Cel

6 pF

SILICON

45 V

150 ns

800 ns

BOTTOM

O-MBCY-W3

Not Qualified

TO-206AA

NOT SPECIFIED

NOT SPECIFIED

BCY59-XPBFREE

Central Semiconductor

NPN

SINGLE

NO

150 MHz

1 W

.1 A

METAL

SWITCHING

.7 V

WIRE

ROUND

1

3

CYLINDRICAL

.34 W

60

200 Cel

5 pF

SILICON

45 V

150 ns

-65 Cel

800 ns

MATTE TIN OVER NICKEL

BOTTOM

O-MBCY-W3

LOW NOISE

TO-18

e3

BCY59X

STMicroelectronics

NPN

SINGLE

NO

100 MHz

.6 W

.2 A

METAL

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

60

175 Cel

SILICON

45 V

150 ns

800 ns

MATTE TIN

BOTTOM

O-MBCY-W3

Not Qualified

LOW NOISE

TO-18

e3

BCY59/X

NXP Semiconductors

NPN

SINGLE

NO

150 MHz

.1 A

METAL

SWITCHING

.7 V

WIRE

ROUND

1

3

CYLINDRICAL

1 W

380

200 Cel

5 pF

SILICON

45 V

150 ns

800 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-18

BF494D74Z

National Semiconductor

NPN

SINGLE

NO

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

65

SILICON

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

JAN2N2905

Microchip Technology

PNP

SINGLE

NO

.6 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

30

200 Cel

SILICON

40 V

45 ns

300 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-39

e0

MIL-19500/290K

JAN2N2945A

Microchip Technology

PNP

SINGLE

NO

10 MHz

.4 W

.1 A

METAL

CHOPPER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

70

200 Cel

SILICON

20 V

150 ns

450 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-206AB

e0

MIL-19500/382E

JAN2N3019S

Microchip Technology

NPN

SINGLE

NO

1 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

100

175 Cel

SILICON

80 V

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-205AD

e0

MIL-19500/391H

JAN2N4237

Microchip Technology

NPN

SINGLE

NO

1 MHz

.8 W

1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

30

175 Cel

SILICON

40 V

TIN LEAD

BOTTOM

O-MBCY-W3

Qualified

TO-39

e0

MIL-19500/581

JANS2N2904AL

Microchip Technology

PNP

SINGLE

NO

.6 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

40

200 Cel

SILICON

60 V

45 ns

300 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-39

e0

MIL-19500/290K

JANS2N3810L

Microchip Technology

PNP

SEPARATE, 2 ELEMENTS

NO

.05 A

METAL

WIRE

ROUND

2

6

CYLINDRICAL

125

SILICON

60 V

TIN LEAD

BOTTOM

O-MBCY-W6

Qualified

TO-78

e0

MIL-19500

JANTX2N2945A

Microchip Technology

PNP

SINGLE

NO

10 MHz

.4 W

.1 A

METAL

CHOPPER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

70

200 Cel

SILICON

20 V

150 ns

450 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-206AB

e0

MIL-19500/382E

JANTX2N3421

Microchip Technology

NPN

SINGLE

NO

40 MHz

1 W

3 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

15

200 Cel

SILICON

80 V

300 ns

1300 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-5

e0

MIL-19500/393E

JANTX2N3498L

Microchip Technology

NPN

SINGLE

NO

1 W

.5 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

15

200 Cel

SILICON

100 V

115 ns

1150 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-5

e0

MIL-19500/366

JANTX2N4237

Microchip Technology

NPN

SINGLE

NO

1 MHz

.8 W

1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

30

175 Cel

SILICON

40 V

TIN LEAD

BOTTOM

O-MBCY-W3

Qualified

TO-39

e0

MIL-19500/581

JANTXV2N2945A

Microchip Technology

PNP

SINGLE

NO

10 MHz

.4 W

.1 A

METAL

CHOPPER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

70

200 Cel

SILICON

20 V

150 ns

450 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-206AB

e0

MIL-19500/382E

JANTXV2N4237

Microchip Technology

NPN

SINGLE

NO

1 MHz

.8 W

1 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

30

175 Cel

SILICON

40 V

TIN LEAD

BOTTOM

O-MBCY-W3

Qualified

TO-39

e0

MIL-19500/581

KSA733GTA

Onsemi

PNP

SINGLE

NO

180 MHz

.25 W

.15 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

200

150 Cel

SILICON

50 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

KSB772YS

Onsemi

PNP

SINGLE

NO

80 MHz

10 W

3 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

RECTANGULAR

1

3

FLANGE MOUNT

Other Transistors

160

150 Cel

SILICON

30 V

MATTE TIN

SINGLE

R-PSFM-T3

Not Qualified

TO-126

e3

LP395Z/LFT1

Texas Instruments

NPN

SINGLE

NO

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

CYLINDRICAL

Other Transistors

125 Cel

MATTE TIN

BOTTOM

O-PBCY-T3

e3

MAT12AHZ

Analog Devices

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN DIODE

NO

200 MHz

.02 A

METAL

AMPLIFIER

WIRE

ROUND

2

6

CYLINDRICAL

Other Transistors

300

150 Cel

SILICON

40 V

BOTTOM

O-MBCY-W6

SUBSTRATE

Not Qualified

LOW NOISE

NOT SPECIFIED

NOT SPECIFIED

MPS650G

Onsemi

NPN

SINGLE

NO

75 MHz

1.5 W

2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

40 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

MPSA13RLRA

Onsemi

NPN

DARLINGTON

NO

125 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

10000

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

MPSA13RLRM

Onsemi

NPN

DARLINGTON

NO

125 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

10000

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

MPSA13ZL1

Onsemi

NPN

DARLINGTON

NO

125 MHz

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

10000

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

EUROPEAN PART NUMBER

TO-92

e0

235

MPSA42RLRA

Onsemi

NPN

SINGLE

NO

50 MHz

.625 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

300 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

MPSA42STOB

Diodes Incorporated

NPN

SINGLE

NO

50 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

WIRE

RECTANGULAR

1

3

IN-LINE

50

SILICON

300 V

SINGLE

R-PSIP-W3

Not Qualified

CECC

MPSA63G

Onsemi

PNP

DARLINGTON

NO

125 MHz

1.5 W

.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

10000

150 Cel

SILICON

30 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

MPSA63PBFREE

Central Semiconductor

PNP

DARLINGTON

NO

125 MHz

1.5 W

.5 A

Other Transistors

5000

150 Cel

MATTE TIN OVER NICKEL

e3

MPSA92RLRPG

Onsemi

PNP

SINGLE

NO

50 MHz

.625 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

300 V

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

260

MPSW51ARLRP

Onsemi

PNP

SINGLE

NO

50 MHz

1 W

1 A

PLASTIC/EPOXY

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

50

150 Cel

SILICON

40 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

235

PN100A

Onsemi

NPN

SINGLE

NO

250 MHz

.625 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

.2 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

300

150 Cel

4.5 pF

SILICON

45 V

Tin (Sn)

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

PN2222ARLRMG

Onsemi

NPN

SINGLE

NO

300 MHz

1.5 W

.6 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

75

150 Cel

SILICON

40 V

35 ns

285 ns

TIN SILVER COPPER

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e1

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