.2 W 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

DDC143TU-13-F

Diodes Incorporated

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

.3 V

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

.2 W

100

150 Cel

SILICON

50 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G6

1

e3

260

DDC114EUQ-13-F

Diodes Incorporated

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

30

150 Cel

SILICON

50 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G6

1

BUILT-IN BIAS RESISTOR RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

DDTB122JU-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

47

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO 21.364

e3

30

260

DCX114TU-7-F

Diodes Incorporated

NPN AND PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

.3 V

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signals

100

150 Cel

SILICON

50 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

MIL-STD-202

DDA124EUQ-7-F

Diodes Incorporated

PNP

YES

.2 W

.03 A

2

BIP General Purpose Small Signal

60

SILICON

MATTE TIN

1

e3

30

260

DDTB114GC-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

APT17NTR-G1

Diodes Incorporated

NPN

SINGLE

YES

.2 W

.05 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

.2 W

20

150 Cel

SILICON

480 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G3

e3

30

260

DCX143TU-7-F

Diodes Incorporated

NPN AND PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

.3 V

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signals

100

150 Cel

SILICON

50 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

MIL-STD-202

DDTB143TU-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

DDC142JU-7-F

Diodes Incorporated

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

56

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 21.28

e3

30

260

DDA142JU-7-F

Diodes Incorporated

PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO 21.28

e3

30

260

DDTB123YU-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO 4.545

e3

30

260

DCX124EUQ-7-F

Diodes Incorporated

NPN AND PNP

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

.3 V

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

-55 Cel

MATTE TIN

DUAL

R-PDSO-G6

1

BUILT IN BIAS RESISTANCE RATIO IS 1

e3

30

260

AEC-Q101; IATF 16949; MIL-STD-202

DDC144TU-7

Diodes Incorporated

NPN

SEPARATE, 2 ELEMENTS WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.05 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

BIP General Purpose Small Signal

50

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G6

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

DDTB114GU-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

DDTB122LU-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTANCE RATIO IS 45.45

e3

30

260

DDTA144GUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

DDTC114YUA-7

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.07 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

TIN LEAD

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTANCE RATIO IS 4.7

e0

DDTA143ZKA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

80

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 10

e3

30

260

BC846AW-7

Diodes Incorporated

NPN

SINGLE

YES

300 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

110

150 Cel

SILICON

65 V

TIN LEAD

DUAL

R-PDSO-G3

Not Qualified

e0

DDTC113TKA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA115TCA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

BC847BW-7

Diodes Incorporated

NPN

SINGLE

YES

300 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

200

150 Cel

SILICON

45 V

TIN LEAD

DUAL

R-PDSO-G3

1

Not Qualified

e0

DDTA114ECAQ-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.05 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

30

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTANCE RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

DDTD143TU-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

40 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA115TUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA114TUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTD123EU-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

39

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO 1

e3

30

260

DDTC123EKA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

20

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

DDTC123JKA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

80

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 21.36

e3

30

260

DDTC123TUA-13-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA125TCA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA123YKA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

33

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 4.54

e3

30

260

DDTA123TCA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTA124ECA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.03 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

30

260

DDTC115ECA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.02 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

82

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

30

260

DDTA114YUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.07 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 4.7

e3

30

260

DDTC114YCAQ-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.07 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

80

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTANCE RATIO IS 4.7, HIGH RELIABILITY

e3

30

260

AEC-Q101

DDTA144EUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.03 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

30

260

DDTD113ZU-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

56

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO 10

e3

30

260

DDTC114ECAQ-13-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.05 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

35

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTANCE RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

MMDT3946-7-01-F

Diodes Incorporated

NPN AND PNP

SEPARATE, 2 ELEMENTS

YES

300 MHz

.2 W

.2 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

2

6

SMALL OUTLINE

30

150 Cel

4 pF

SILICON

40 V

70 ns

-55 Cel

250 ns

MATTE TIN

DUAL

R-PDSO-G6

1

30

260

DDTA113TKA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR

e3

30

260

DDTA115GKA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

82

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

UL RECOGNIZED

DDTC114WKA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

24

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 0.47

e3

30

260

DDTC114TUA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e3

30

260

DDTC144EKA-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

e3

30

260

DDTA114WUA-7-F

Diodes Incorporated

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

24

150 Cel

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 0.47

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