.2 A Small Signal Bipolar Junction Transistors (BJT) 2,050

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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

KSC815

Samsung

NPN

SINGLE

NO

200 MHz

.4 W

.2 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

45 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KST6428TI

Samsung

NPN

SINGLE

YES

.2 A

PLASTIC/EPOXY

.6 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

250

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

2N6428A

Samsung

NPN

SINGLE

NO

100 MHz

.625 W

.2 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

250

150 Cel

SILICON

50 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KST3904TF

Samsung

NPN

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

100

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KSC815-R

Samsung

NPN

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

40

SILICON

45 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KST6428TF

Samsung

NPN

SINGLE

YES

.2 A

PLASTIC/EPOXY

.6 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

250

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

KST3903TR

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KST3903TI

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KSA545

Samsung

PNP

SINGLE

NO

.4 W

.2 A

PLASTIC/EPOXY

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

60 V

TIN LEAD

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

e0

KSC853

Samsung

NPN

SINGLE

NO

.4 W

.2 A

PLASTIC/EPOXY

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

60 V

TIN LEAD

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

e0

KSC815-Y

Samsung

NPN

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

120

SILICON

45 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KST6428TR

Samsung

NPN

SINGLE

YES

.2 A

PLASTIC/EPOXY

.6 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

250

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

KST3903TF

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KSC815-G

Samsung

NPN

SINGLE

NO

200 MHz

.2 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

200

SILICON

45 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

2N6428

Samsung

NPN

SINGLE

NO

100 MHz

.625 W

.2 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

250

150 Cel

SILICON

50 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KST4126TF

Samsung

PNP

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4124TI

Samsung

NPN

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4125TI

Samsung

PNP

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KST4125

Samsung

PNP

SINGLE

YES

200 MHz

.35 W

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

25

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KST4125TR

Samsung

PNP

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KST4123TI

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

MMBT3904-T1

Samsung

NPN

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

4 pF

SILICON

40 V

70 ns

250 ns

DUAL

R-PDSO-G3

Not Qualified

MMBT3906-T1

Samsung

PNP

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

.4 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

4.5 pF

SILICON

40 V

70 ns

300 ns

DUAL

R-PDSO-G3

Not Qualified

KST4124

Samsung

NPN

SINGLE

YES

300 MHz

.35 W

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

60

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4123TF

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KST4124TF

Samsung

NPN

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4126TR

Samsung

PNP

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4126TI

Samsung

PNP

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4123

Samsung

NPN

SINGLE

YES

250 MHz

.35 W

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

25

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KST4123TR

Samsung

NPN

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KSP8097

Samsung

NPN

SINGLE

NO

.2 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

250

SILICON

40 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KST4125TF

Samsung

PNP

SINGLE

YES

250 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KST4126

Samsung

PNP

SINGLE

YES

250 MHz

.35 W

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

60

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KST4124TR

Samsung

NPN

SINGLE

YES

300 MHz

.2 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

25 V

DUAL

R-PDSO-G3

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