1 W Small Signal Bipolar Junction Transistors (BJT) 944

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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

SOC2920AHRB

STMicroelectronics

NPN

SEPARATE, 2 ELEMENTS

YES

60 MHz

1 W

.03 A

CERAMIC, METAL-SEALED COFIRED

NO LEAD

RECTANGULAR

2

6

SMALL OUTLINE

Other Transistors

300

200 Cel

SILICON

60 V

DUAL

R-CDSO-N6

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

STL72G-AP

STMicroelectronics

NPN

SINGLE

NO

1 W

1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

5

150 Cel

SILICON

400 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

BCY79X

STMicroelectronics

PNP

SINGLE

NO

180 MHz

1 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

TO-18

e3

STBV42G

STMicroelectronics

NPN

SINGLE

NO

1 W

1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

5

150 Cel

SILICON

400 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

STL72

STMicroelectronics

NPN

SINGLE

NO

1 W

1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

5

150 Cel

SILICON

400 V

TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

2STL1525

STMicroelectronics

NPN

SINGLE

NO

120 MHz

1 W

5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

100

150 Cel

SILICON

25 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

2N5154HR

STMicroelectronics

NPN

SINGLE

NO

1 W

5 A

METAL

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

200 Cel

SILICON

80 V

500 ns

1300 ns

BOTTOM

O-MBCY-W3

TO-39

EUROPEAN SPACE AGENCY

BC636-AP

STMicroelectronics

PNP

SINGLE

NO

100 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

45 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

JANSR2N5551UBT

STMicroelectronics

NPN

SINGLE

YES

1 W

.5 A

UNSPECIFIED

AMPLIFIER

.2 V

NO LEAD

RECTANGULAR

1

3

SMALL OUTLINE

.36 W

30

200 Cel

6 pF

SILICON

160 V

DUAL

R-XDSO-N3

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

MIL-19500; RH - 100K Rad(Si)

JANS2N5551UBT

STMicroelectronics

NPN

SINGLE

YES

1 W

.5 A

UNSPECIFIED

AMPLIFIER

.2 V

NO LEAD

RECTANGULAR

1

3

SMALL OUTLINE

.36 W

30

200 Cel

6 pF

SILICON

160 V

DUAL

R-XDSO-N3

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

MIL-19500

BC635-AP

STMicroelectronics

NPN

SINGLE

NO

100 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

25

150 Cel

SILICON

45 V

MATTE TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

JANS2N2222AUBC

STMicroelectronics

NPN

SINGLE

YES

1 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

DUAL

R-CDSO-N3

Qualified

NOT SPECIFIED

NOT SPECIFIED

MIL-19500/225

JANS2N5551UBG

STMicroelectronics

NPN

SINGLE

YES

1 W

.5 A

UNSPECIFIED

AMPLIFIER

.2 V

NO LEAD

RECTANGULAR

1

3

SMALL OUTLINE

.36 W

30

200 Cel

6 pF

SILICON

160 V

DUAL

R-XDSO-N3

Not Qualified

NOT SPECIFIED

NOT SPECIFIED

MIL-19500

PMEM4020ND,115

NXP Semiconductors

NPN

SINGLE WITH BUILT-IN DIODE

YES

1 W

2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

75

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G6

Not Qualified

e3

PSS8550D

NXP Semiconductors

PNP

SINGLE

NO

100 MHz

1 W

1.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

160

150 Cel

SILICON

25 V

TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

PXTA64

NXP Semiconductors

PNP

DARLINGTON

YES

125 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

BC869-16,115

NXP Semiconductors

PNP

SINGLE

YES

40 MHz

1 W

1 A

PLASTIC/EPOXY

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

20 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

BST60,115

NXP Semiconductors

PNP

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

45 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST60

NXP Semiconductors

PNP

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

45 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PXTA92T/R

NXP Semiconductors

PNP

SINGLE

YES

50 MHz

1 W

.1 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

25

150 Cel

6 pF

SILICON

300 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PXT2222

NXP Semiconductors

NPN

SINGLE

YES

250 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

1.6 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

30

150 Cel

8 pF

SILICON

30 V

35 ns

285 ns

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e3

BC868T/R

NXP Semiconductors

NPN

SINGLE

YES

40 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

60

150 Cel

SILICON

20 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e3

BF620,115

NXP Semiconductors

NPN

SINGLE

YES

60 MHz

1 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

.6 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

50

150 Cel

1.6 pF

SILICON

300 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PXTA42

NXP Semiconductors

NPN

SINGLE

YES

50 MHz

1 W

.1 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

3 pF

SILICON

300 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PXT2907AT/R

NXP Semiconductors

PNP

SINGLE

YES

200 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

1.6 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

50

150 Cel

8 pF

SILICON

60 V

40 ns

365 ns

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BF620T/R

NXP Semiconductors

NPN

SINGLE

YES

60 MHz

1 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

.6 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

50

150 Cel

1.6 pF

SILICON

300 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BST50

NXP Semiconductors

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

45 V

400 ns

1500 ns

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST50,115

NXP Semiconductors

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

45 V

400 ns

1500 ns

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PMEM4030PS

NXP Semiconductors

PNP

SINGLE WITH BUILT-IN DIODE

YES

100 MHz

1 W

2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

8

SMALL OUTLINE

Other Transistors

80

150 Cel

SILICON

50 V

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G8

Not Qualified

MS-012AA

e4

BC868-10

NXP Semiconductors

NPN

SINGLE

YES

40 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

85

150 Cel

SILICON

20 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

BF622

NXP Semiconductors

NPN

SINGLE

YES

60 MHz

1 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

.6 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

50

150 Cel

1.6 pF

SILICON

250 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PSS8050D

NXP Semiconductors

NPN

SINGLE

NO

100 MHz

1 W

1.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

25 V

TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

BST51

NXP Semiconductors

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

60 V

400 ns

1500 ns

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST51,135

NXP Semiconductors

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

60 V

400 ns

1500 ns

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BF621

NXP Semiconductors

PNP

SINGLE

YES

60 MHz

1 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

.8 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

50

150 Cel

1.6 pF

SILICON

300 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BC869-10

NXP Semiconductors

PNP

SINGLE

YES

60 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

60

150 Cel

SILICON

20 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

BST62

NXP Semiconductors

PNP

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

80 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PXTA92,115

NXP Semiconductors

PNP

SINGLE

YES

50 MHz

1 W

.1 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

25

150 Cel

6 pF

SILICON

300 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST61

NXP Semiconductors

PNP

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

60 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PXTA42T/R

NXP Semiconductors

NPN

SINGLE

YES

50 MHz

1 W

.1 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

3 pF

SILICON

300 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BC868-16

NXP Semiconductors

NPN

SINGLE

YES

40 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

20 V

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

PMEM4030NS

NXP Semiconductors

NPN

SINGLE WITH BUILT-IN DIODE

YES

100 MHz

1 W

2 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

8

SMALL OUTLINE

Other Transistors

200

150 Cel

SILICON

50 V

NICKEL PALLADIUM GOLD

DUAL

R-PDSO-G8

Not Qualified

MS-012AA

e4

PXTA14

NXP Semiconductors

NPN

DARLINGTON

YES

125 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20000

150 Cel

SILICON

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PMEM4020PD,115

NXP Semiconductors

PNP

SINGLE WITH BUILT-IN DIODE

YES

150 MHz

1 W

1.3 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

160

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G6

Not Qualified

e3

PXT2222A,115

NXP Semiconductors

NPN

SINGLE

YES

300 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

1 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

40

150 Cel

8 pF

SILICON

40 V

35 ns

250 ns

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PSS8550C

NXP Semiconductors

PNP

SINGLE

NO

100 MHz

1 W

1.5 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

120

150 Cel

SILICON

25 V

TIN

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

e3

BST60T/R

NXP Semiconductors

PNP

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

45 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BST52

NXP Semiconductors

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

YES

200 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

1.3 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

2000

150 Cel

SILICON

80 V

400 ns

1500 ns

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

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