.5 W Small Signal Bipolar Junction Transistors (BJT) 818

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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

JANTX2N2221AUA

Microchip Technology

NPN

SINGLE

YES

250 MHz

.5 W

.8 A

CERAMIC, METAL-SEALED COFIRED

SWITCHING

NO LEAD

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

20

200 Cel

SILICON

50 V

35 ns

300 ns

TIN LEAD

DUAL

R-CDSO-N4

Qualified

e0

MIL-19500/255

ZUMT491TA

Diodes Incorporated

NPN

SINGLE

YES

.5 W

1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

80

150 Cel

SILICON

60 V

MATTE TIN

DUAL

R-PDSO-G3

1

HIGH RELIABILITY

e3

30

260

AEC-Q101

JANS2N2222AUB

Microchip Technology

NPN

SINGLE

YES

250 MHz

.5 W

.8 A

CERAMIC, METAL-SEALED COFIRED

SWITCHING

NO LEAD

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

30

200 Cel

SILICON

50 V

35 ns

300 ns

TIN LEAD

DUAL

R-CDSO-N3

Qualified

e0

MIL-19500/255

JANTX2N2060L

Microchip Technology

NPN

SEPARATE, 2 ELEMENTS

NO

.5 W

.5 A

METAL

WIRE

ROUND

2

6

CYLINDRICAL

Other Transistors

50

200 Cel

SILICON

60 V

TIN LEAD

BOTTOM

O-MBCY-W6

Qualified

TO-78

e0

MIL-19500/270

JANTX2N2221A

Microchip Technology

NPN

SINGLE

NO

250 MHz

.5 W

.8 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

175 Cel

SILICON

50 V

35 ns

300 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-206AA

e0

MIL-19500/255T

JANTX2N2221AL

Microchip Technology

NPN

SINGLE

NO

.5 W

.8 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

200 Cel

SILICON

50 V

35 ns

300 ns

TIN LEAD

BOTTOM

O-MBCY-W3

COLLECTOR

Qualified

TO-206AA

e0

MIL-19500/255T

KSC1845FTA

Onsemi

NPN

SINGLE

NO

110 MHz

.5 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

300

150 Cel

SILICON

120 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

LOW NOISE

TO-92

e3

NSBC114EDXV6T1G

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

35

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

NSBC114EPDXV6T1G

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

35

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

2SA2094TLQ

ROHM

PNP

SINGLE

YES

300 MHz

.5 W

2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

120

150 Cel

SILICON

60 V

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

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

ZUMT619TA

Diodes Incorporated

NPN

SINGLE

YES

215 MHz

.5 W

1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

2SD2153T100V

ROHM

NPN

SINGLE

YES

110 MHz

.5 W

2 A

PLASTIC/EPOXY

AMPLIFIER

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2 W

820

150 Cel

SILICON

25 V

Tin/Copper (Sn/Cu)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e2

10

260

2SD2672TL

ROHM

NPN

SINGLE

YES

250 MHz

.5 W

4 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

12 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

FMMT497

Diodes Incorporated

NPN

SINGLE

YES

75 MHz

.5 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20

150 Cel

SILICON

300 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

Not Qualified

e3

30

260

2SB1690TL

ROHM

PNP

SINGLE

YES

360 MHz

.5 W

2 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

12 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

2SC1959-Y

Micro Commercial Components

SINGLE

NO

300 MHz

.5 W

.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

120

150 Cel

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

30

240

2SC1959Y

Continental Device India

NPN

SINGLE

NO

300 MHz

.5 W

.5 A

PLASTIC/EPOXY

.25 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

SILICON

30 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

2SC4541

Toshiba

NPN

SINGLE

YES

100 MHz

.5 W

3 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

SILICON

50 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

2SC4672T100/Q

ROHM

NPN

SINGLE

YES

210 MHz

.5 W

3 A

PLASTIC/EPOXY

AMPLIFIER

.35 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

120

150 Cel

SILICON

50 V

Tin/Copper (Sn/Cu)

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e2

10

260

2SC5866TLR

ROHM

NPN

SINGLE

YES

200 MHz

.5 W

2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

180

150 Cel

SILICON

60 V

Tin/Silver/Copper (Sn96.5Ag3.0Cu0.5)

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

2SCR514RTL

ROHM

NPN

SINGLE

YES

320 MHz

.5 W

.7 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

120

150 Cel

SILICON

80 V

50 ns

750 ns

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

2SD1767

ROHM

NPN

SINGLE

YES

.5 W

.7 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

82

150 Cel

SILICON

80 V

TIN COPPER

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e2

10

260

2SD2657TL

ROHM

NPN

SINGLE

YES

300 MHz

.5 W

1.5 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

30 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

2SD2661T100

ROHM

NPN

SINGLE

YES

360 MHz

.5 W

2 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

12 V

TIN COPPER

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e2

10

260

2SD2670TL

ROHM

NPN

SINGLE

YES

280 MHz

.5 W

3 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

12 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

2SD2675TL

ROHM

NPN

SINGLE

YES

320 MHz

.5 W

1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

30 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

e1

10

260

LM394CN

Texas Instruments

NPN

SEPARATE, 2 ELEMENTS

NO

.5 W

.02 A

PLASTIC/EPOXY

THROUGH-HOLE

RECTANGULAR

2

8

IN-LINE

225

85 Cel

SILICON

20 V

-25 Cel

DUAL

R-PDIP-T8

LOW NOISE

QSL12TR

ROHM

NPN

SINGLE WITH BUILT-IN DIODE

YES

320 MHz

.5 W

1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

5

SMALL OUTLINE

Other Transistors

270

125 Cel

SILICON

30 V

TIN SILVER COPPER

DUAL

R-PDSO-G5

1

Not Qualified

e1

10

260

QSX2TR

ROHM

NPN

SINGLE

YES

200 MHz

.5 W

5 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

30 V

TIN SILVER COPPER

DUAL

R-PDSO-G6

1

Not Qualified

e1

10

260

QSX7TR

ROHM

NPN

SEPARATE, 2 ELEMENTS

YES

400 MHz

.5 W

1.5 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

12 V

TIN SILVER COPPER

DUAL

R-PDSO-G6

1

Not Qualified

e1

10

260

TP2222A

Allegro MicroSystems

NPN

SINGLE

NO

250 MHz

.5 W

.5 A

PLASTIC/EPOXY

SWITCHING

.3 V

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

8 pF

SILICON

40 V

TIN LEAD

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e0

NSBC144EPDXV6T1G

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

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-F6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

QSX8TR

ROHM

NPN

SEPARATE, 2 ELEMENTS

YES

320 MHz

.5 W

1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

Other Transistors

270

150 Cel

SILICON

30 V

TIN SILVER COPPER

DUAL

R-PDSO-G6

1

Not Qualified

e1

10

260

2N871

Texas Instruments

NPN

SINGLE

NO

60 MHz

.5 W

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N912

Texas Instruments

NPN

SINGLE

NO

40 MHz

.5 W

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

10

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N997

Texas Instruments

NPN

DARLINGTON

NO

.5 W

.3 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

4000

175 Cel

SILICON

40 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N999

Texas Instruments

NPN

DARLINGTON

NO

.5 W

.5 A

METAL

WIRE

ROUND

1

4

CYLINDRICAL

Other Transistors

1000

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W4

COLLECTOR

Not Qualified

TO-72

NOT SPECIFIED

NOT SPECIFIED

LM394BH

Texas Instruments

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN DIODE

NO

.5 W

.02 A

METAL

WIRE

ROUND

2

6

CYLINDRICAL

225

85 Cel

SILICON

35 V

-25 Cel

BOTTOM

O-MBCY-W6

LOW NOISE

TO-5

2N956

Texas Instruments

NPN

SINGLE

NO

70 MHz

.5 W

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

35

200 Cel

SILICON

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N2540

Texas Instruments

NPN

SINGLE

NO

250 MHz

.5 W

.8 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

200 Cel

SILICON

30 V

40 ns

40 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N731

Texas Instruments

NPN

SINGLE

NO

25 MHz

.5 W

1 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

175 Cel

SILICON

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N718A

Texas Instruments

NPN

SINGLE

NO

60 MHz

.5 W

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

200 Cel

SILICON

32 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N911

Texas Instruments

NPN

SINGLE

NO

50 MHz

.5 W

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

LM394CH

Texas Instruments

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN DIODE

NO

.5 W

.02 A

METAL

WIRE

ROUND

2

6

CYLINDRICAL

225

85 Cel

SILICON

20 V

-25 Cel

BOTTOM

O-MBCY-W6

LOW NOISE

TO-5

2N2539

Texas Instruments

NPN

SINGLE

NO

250 MHz

.5 W

.8 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

200 Cel

SILICON

30 V

40 ns

40 ns

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N730

Texas Instruments

NPN

SINGLE

NO

40 MHz

.5 W

1 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

175 Cel

SILICON

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N719A

Texas Instruments

NPN

SINGLE

NO

40 MHz

.5 W

1 A

METAL

SWITCHING

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

20

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W3

COLLECTOR

Not Qualified

HIGH RELIABILITY

TO-18

NOT SPECIFIED

NOT SPECIFIED

2N2060

Texas Instruments

NPN

SEPARATE, 2 ELEMENTS

NO

60 MHz

.5 W

.5 A

METAL

AMPLIFIER

WIRE

ROUND

2

6

CYLINDRICAL

Other Transistors

40

200 Cel

SILICON

60 V

BOTTOM

O-MBCY-W6

ISOLATED

Not Qualified

TO-78

NOT SPECIFIED

NOT SPECIFIED

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