Samsung Small Signal Bipolar Junction Transistors (BJT) 949

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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

KSA642-Y

Samsung

PNP

SINGLE

NO

.3 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

120

SILICON

25 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSR1106

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 4.7

KSR1204

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

NO

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

BIP General Purpose Small Signal

68

SILICON

50 V

SINGLE

R-PSIP-T3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

KSR1102TF

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 1

KSA916

Samsung

PNP

SINGLE

NO

120 MHz

.9 W

.8 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

80

150 Cel

SILICON

120 V

BOTTOM

O-PBCY-W3

Not Qualified

KSC2330-O

Samsung

NPN

SINGLE

NO

50 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

70

SILICON

300 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSR1001

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

NO

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

BIP General Purpose Small Signal

20

SILICON

50 V

BOTTOM

O-PBCY-T3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

TO-92

KST1009F3

Samsung

NPN

SINGLE

YES

150 MHz

.35 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

60

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KSR2103TR

Samsung

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

56

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 1

KSA1378

Samsung

PNP

SINGLE

NO

.3 W

.3 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

70

150 Cel

SILICON

25 V

BOTTOM

O-PBCY-W3

Not Qualified

KST14TR

Samsung

NPN

DARLINGTON

YES

.3 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

10000

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KSD227-G

Samsung

NPN

SINGLE

NO

.3 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

200

SILICON

25 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSC1623-O

Samsung

NPN

SINGLE

YES

250 MHz

.1 A

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

90

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

KST540TI

Samsung

PNP

SINGLE

YES

100 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

60

SILICON

150 V

DUAL

R-PDSO-G3

Not Qualified

KSC945-Y

Samsung

NPN

SINGLE

NO

300 MHz

.15 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

120

SILICON

50 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSC2710

Samsung

NPN

SINGLE

NO

.3 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

20 V

BOTTOM

O-PBCY-W3

Not Qualified

KSA1378-G

Samsung

PNP

SINGLE

NO

.3 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

200

SILICON

25 V

SINGLE

R-PSIP-T3

Not Qualified

KST812M4

Samsung

PNP

SINGLE

YES

.35 W

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

Other Transistors

90

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KSR1112

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR

KSC2715TR

Samsung

NPN

SINGLE

YES

100 MHz

PLASTIC/EPOXY

AMPLIFIER

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

40

3.2 pF

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KSR1108TF

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

56

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 0.468

KSA1244

Samsung

PNP

SINGLE

NO

20 W

5 A

PLASTIC/EPOXY

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

Other Transistors

70

SILICON

SINGLE

R-PSIP-T3

Not Qualified

KSA1298TI

Samsung

PNP

SINGLE

YES

120 MHz

.8 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

100

SILICON

25 V

DUAL

R-PDSO-G3

Not Qualified

KSR2110TI

Samsung

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

100

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR

KSP06

Samsung

PNP

SINGLE

NO

100 MHz

.625 W

.5 A

PLASTIC/EPOXY

AMPLIFIER

.25 V

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

50

150 Cel

SILICON

80 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KST812M6TR

Samsung

PNP

SINGLE

YES

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

200

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

BCW29TI

Samsung

PNP

SINGLE

YES

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

20 V

DUAL

R-PDSO-G3

Not Qualified

KSC2982-A

Samsung

NPN

SINGLE

YES

150 MHz

2 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

140

SILICON

10 V

SINGLE

R-PSSO-F3

Not Qualified

KSA643-O

Samsung

PNP

SINGLE

NO

.5 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

70

SILICON

20 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

BCW71TR

Samsung

NPN

SINGLE

YES

300 MHz

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

110

SILICON

45 V

DUAL

R-PDSO-G3

Not Qualified

KST1623L3TF

Samsung

NPN

SINGLE

YES

.1 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

60

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

KSR1109TF

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

100

SILICON

40 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR

KSA931-R

Samsung

PNP

SINGLE

NO

100 MHz

1 W

.7 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

60 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSR1102TI

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 1

KSR2105TR

Samsung

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 2.127

KSA931-Y

Samsung

PNP

SINGLE

NO

100 MHz

1 W

.7 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

Other Transistors

120

150 Cel

SILICON

60 V

BOTTOM

O-PBCY-T3

Not Qualified

TO-92

KSC2752-O

Samsung

NPN

SINGLE

NO

.5 A

PLASTIC/EPOXY

SWITCHING

1 V

THROUGH-HOLE

RECTANGULAR

1

3

FLANGE MOUNT

10 W

30

150 Cel

SILICON

400 V

1000 ns

3500 ns

SINGLE

R-PSFM-T3

ISOLATED

Not Qualified

TO-126

KSP6521

Samsung

NPN

SINGLE

NO

.1 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

300

SILICON

25 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

KSR1012

Samsung

NPN

SINGLE WITH BUILT-IN RESISTOR

NO

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

BIP General Purpose Small Signal

100

SILICON

40 V

BOTTOM

O-PBCY-T3

Not Qualified

BUILT-IN BIAS RESISTOR

TO-92

KSA542

Samsung

PNP

SINGLE

NO

100 MHz

.25 W

.05 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

40

150 Cel

SILICON

25 V

BOTTOM

O-PBCY-W3

Not Qualified

TO-92

KSC1845-F

Samsung

NPN

SINGLE

NO

110 MHz

.05 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

300

SILICON

120 V

BOTTOM

O-PBCY-T3

Not Qualified

LOW NOISE

TO-92

KSA1378-Y

Samsung

PNP

SINGLE

NO

.3 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

120

SILICON

25 V

SINGLE

R-PSIP-T3

Not Qualified

KSD985-O

Samsung

NPN

DARLINGTON WITH BUILT-IN DIODE AND RESISTOR

NO

1.5 A

PLASTIC/EPOXY

AMPLIFIER

1.5 V

THROUGH-HOLE

RECTANGULAR

1

3

FLANGE MOUNT

10 W

4000

150 Cel

SILICON

60 V

SINGLE

R-PSFM-T3

ISOLATED

Not Qualified

TO-126

KSA992-F

Samsung

PNP

SINGLE

NO

100 MHz

.05 A

PLASTIC/EPOXY

AMPLIFIER

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

300

SILICON

120 V

BOTTOM

O-PBCY-T3

Not Qualified

LOW NOISE

TO-92

KSA1182TR

Samsung

PNP

SINGLE

YES

200 MHz

.5 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

30 V

DUAL

R-PDSO-G3

Not Qualified

KSR2004

Samsung

PNP

SINGLE WITH BUILT-IN RESISTOR

NO

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

THROUGH-HOLE

ROUND

1

3

CYLINDRICAL

BIP General Purpose Small Signal

68

SILICON

50 V

BOTTOM

O-PBCY-T3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

TO-92

KSC3488

Samsung

NPN

SINGLE

NO

.3 W

.3 A

PLASTIC/EPOXY

AMPLIFIER

WIRE

ROUND

1

3

CYLINDRICAL

Other Transistors

70

150 Cel

SILICON

25 V

BOTTOM

O-PBCY-W3

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