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

BC868,115

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

1

COLLECTOR

Not Qualified

e3

30

260

BST52,135

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

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST51T/R

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

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BST61,115

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

60 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BST50T/R

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

COLLECTOR

Not Qualified

TO-243AA

e3

BF623T/R

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

250 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PMEM4020APD

NXP Semiconductors

PNP

SINGLE WITH BUILT-IN DIODE

YES

150 MHz

1 W

.75 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

160

150 Cel

SILICON

40 V

Matte Tin (Sn)

DUAL

R-PDSO-G6

Not Qualified

e3

BF620

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 (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PMEM4020PD

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

PXT2907

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

30

150 Cel

8 pF

SILICON

40 V

45 ns

100 ns

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e3

BST52T/R

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

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PMEM4020AND

NXP Semiconductors

NPN

SINGLE WITH BUILT-IN DIODE

YES

150 MHz

1 W

.95 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

200

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

e3

BF623

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

250 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PSS8050C

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

BF621,115

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

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PXTA14T/R

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

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BF621T/R

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

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PXTA42,115

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

1

COLLECTOR

Not Qualified

e3

30

260

PXTA77

NXP Semiconductors

PNP

DARLINGTON

YES

125 MHz

1 W

.5 A

PLASTIC/EPOXY

1.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

10000

150 Cel

SILICON

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

BF623,115

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

250 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PXTA92

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 (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PXT2907A

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 (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PMEM4020ND

NXP Semiconductors

NPN

SINGLE WITH BUILT-IN DIODE

YES

150 MHz

1 W

1.65 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

6

SMALL OUTLINE

Other Transistors

200

SILICON

40 V

Matte Tin (Sn)

DUAL

R-PDSO-G6

Not Qualified

e3

BST61T/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

60 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BC868-25

NXP Semiconductors

NPN

SINGLE

YES

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

160

150 Cel

SILICON

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

BC869-16

NXP Semiconductors

PNP

SINGLE

YES

140 MHz

1 W

1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

20 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

IEC-60134

PXT2222AT/R

NXP Semiconductors

NPN

SINGLE

YES

300 MHz

1 W

.1 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

COLLECTOR

Not Qualified

TO-243AA

e3

PXT4401

NXP Semiconductors

NPN

SINGLE

YES

250 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

.75 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

80

150 Cel

8 pF

SILICON

40 V

35 ns

250 ns

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PXT4403T/R

NXP Semiconductors

PNP

SINGLE

YES

200 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

.75 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20

150 Cel

8.5 pF

SILICON

40 V

40 ns

350 ns

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PXT4401T/R

NXP Semiconductors

NPN

SINGLE

YES

250 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

.75 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

80

150 Cel

8 pF

SILICON

40 V

35 ns

250 ns

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

e3

PXT4403,115

NXP Semiconductors

PNP

SINGLE

YES

200 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

.75 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20

150 Cel

8.5 pF

SILICON

40 V

40 ns

350 ns

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

e3

30

260

PXT4403

NXP Semiconductors

PNP

SINGLE

YES

200 MHz

1 W

.6 A

PLASTIC/EPOXY

SWITCHING

.75 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

20

150 Cel

8.5 pF

SILICON

40 V

40 ns

350 ns

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BCX54-10T/R

NXP Semiconductors

NPN

SINGLE

YES

130 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

63

150 Cel

SILICON

45 V

MATTE TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

260

BCX55-10

NXP Semiconductors

NPN

SINGLE

YES

130 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

63

150 Cel

SILICON

60 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243

e3

30

260

BCV28T/R

NXP Semiconductors

PNP

DARLINGTON

YES

220 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

4000

150 Cel

SILICON

30 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

BCX54-10

NXP Semiconductors

NPN

SINGLE

YES

130 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

63

150 Cel

SILICON

45 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

PBSS5250X

NXP Semiconductors

NPN

SINGLE

YES

100 MHz

1 W

2 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

300

150 Cel

SILICON

50 V

Tin (Sn)

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BCP51-16/T3

NXP Semiconductors

PNP

SINGLE

YES

115 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

1.5 W

100

150 Cel

SILICON

45 V

DUAL

R-PDSO-G4

COLLECTOR

Not Qualified

BCV48

NXP Semiconductors

PNP

DARLINGTON

YES

220 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1 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

BCX55-16T/R

NXP Semiconductors

NPN

SINGLE

YES

130 MHz

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

60 V

MATTE TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

260

BCX55-10T/R

NXP Semiconductors

NPN

SINGLE

YES

1 W

1 A

PLASTIC/EPOXY

AMPLIFIER

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

63

150 Cel

SILICON

MATTE TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

260

PBSS5250X,135

NXP Semiconductors

NPN

SINGLE

YES

100 MHz

1 W

2 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

300

150 Cel

SILICON

50 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BCV29T/R

NXP Semiconductors

NPN

DARLINGTON

YES

220 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

4000

150 Cel

SILICON

30 V

TIN

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

TO-243AA

e3

PBSS5250X,115

NXP Semiconductors

NPN

SINGLE

YES

100 MHz

1 W

2 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

300

150 Cel

SILICON

50 V

TIN

SINGLE

R-PSSO-F3

1

COLLECTOR

Not Qualified

TO-243AA

e3

30

260

BCP51-16T/R

NXP Semiconductors

PNP

SINGLE

YES

115 MHz

1 W

1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

45 V

DUAL

R-PDSO-G4

COLLECTOR

Not Qualified

BCV49

NXP Semiconductors

NPN

DARLINGTON

YES

220 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1 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

PZTA14T/R

NXP Semiconductors

NPN

DARLINGTON

YES

125 MHz

1 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

1.5 V

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

1.5 W

20000

150 Cel

SILICON

TIN

DUAL

R-PDSO-G4

COLLECTOR

Not Qualified

e3

260

BCP52-16T/R

NXP Semiconductors

PNP

SINGLE

YES

115 MHz

1 W

1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

4

SMALL OUTLINE

Other Transistors

100

150 Cel

SILICON

60 V

DUAL

R-PDSO-G4

COLLECTOR

Not Qualified

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