SINGLE WITH BUILT-IN RESISTOR Small Signal Bipolar Junction Transistors (BJT) 422

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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

DDTA114ECAQ-13-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

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

DDTC123ECAQ-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

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTANCE RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

DDTC124EUAQ-13-F

Diodes Incorporated

NPN

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

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTANCE RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

DTA123TET1G

Onsemi

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

.3 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

160

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

e3

NOT SPECIFIED

NOT SPECIFIED

DTA144TET1G

Onsemi

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

.3 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

120

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTOR

e3

NOT SPECIFIED

NOT SPECIFIED

MMUN2140LT1G

Onsemi

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

.4 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

120

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTOR

TO-236AB

e3

NOT SPECIFIED

NOT SPECIFIED

NSBC124XF3T5G

Onsemi

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

.297 W

.1 A

PLASTIC/EPOXY

SWITCHING

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signals

80

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-F3

1

BUILT IN BIAS RESISTANCE RATIO IS 2.14

e3

NOT SPECIFIED

NOT SPECIFIED

MUN5240T1G

Onsemi

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

.31 W

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

120

SILICON

50 V

Matte Tin (Sn) - annealed

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR

e3

NOT SPECIFIED

NOT SPECIFIED

BCR133WE6327HTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

130 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

30

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

40

260

BCR116E6433HTMA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

160 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 10

NOT SPECIFIED

NOT SPECIFIED

BCR135E6433HTMA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

150 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 21.3636

NOT SPECIFIED

NOT SPECIFIED

BCR141E6433HTMA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

130 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

NOT SPECIFIED

NOT SPECIFIED

BCR142WE6327HTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

150 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 2.1363

e3

40

260

BCR148E6327HTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

100 MHz

.07 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

150 Cel

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

BCR148E6433HTMA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

100 MHz

.07 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

BCR158E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 21.3636

e3

BCR162E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

20

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

BCR166E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

160 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 10

e3

BCR166E6433HTMA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

160 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 10

NOT SPECIFIED

NOT SPECIFIED

BCR183E6433HTMA1

Infineon Technologies

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

BUILT-IN BIAS RESISTOR RATIO IS 1

NOT SPECIFIED

NOT SPECIFIED

BCR185E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 4.7

e3

BCR185E6433HTMA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 4.7

NOT SPECIFIED

NOT SPECIFIED

BCR192E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 2.1363

e3

BCR521E6327HTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

100 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

20

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

DDTC115EUAQ-7-F

Diodes Incorporated

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.02 A

PLASTIC/EPOXY

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

82

SILICON

50 V

MATTE TIN

DUAL

R-PDSO-G3

1

BUILT IN BIAS RESISTANCE RATIO IS 1, HIGH RELIABILITY

e3

30

260

AEC-Q101

BCR112WH6327XTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

140 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

20

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO IS 1

e3

BCR116WH6327XTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

150 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO 10

e3

BCR119WH6327XTSA1

Infineon Technologies

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

150 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR

e3

BCR158WH6327XTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO IS 21.36

e3

BCR169WH6327XTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

120

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR

e3

BCR191WH6327XTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

50

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO 1

e3

BCR192WH6327XTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO IS 2.14

e3

BCR573E6327HTSA1

Infineon Technologies

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

150 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

70

SILICON

50 V

TIN

DUAL

R-PDSO-G3

1

BUILT-IN BIAS RESISTOR RATIO 0.1

e3

DTD143ECT216

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.5 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

47

150 Cel

SILICON

50 V

Tin/Silver/Copper (Sn/Ag/Cu)

DUAL

R-PDSO-G3

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e1

10

260

RN6002

Toshiba

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

120 MHz

.5 W

2 A

PLASTIC/EPOXY

SWITCHING

.5 V

FLAT

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

1 W

50

150 Cel

SILICON

30 V

TIN LEAD

SINGLE

R-PSSO-F3

COLLECTOR

Not Qualified

BUILT IN BIAS RESISTOR

e0

DTA114YCAT116

ROHM

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.07 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

.2 W

68

150 Cel

SILICON

50 V

DUAL

R-PDSO-G3

1

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 4.7

10

260

DTA123ECAT116

ROHM

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

20

150 Cel

SILICON

50 V

DUAL

R-PDSO-G3

1

Not Qualified

DIGITAL, BUILT-IN BIAS RESISTOR RATIO IS 1

10

260

DTD143TKT146

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.5 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

40 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

e1

10

260

DTA144EUAT106

ROHM

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

.2 W

68

150 Cel

SILICON

50 V

DUAL

R-PDSO-G3

1

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

10

260

DTC114TUAT106

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

.2 W

100

150 Cel

SILICON

50 V

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR

10

260

DTC124XUAT106

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

68

150 Cel

SILICON

50 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 2.1

e1

10

260

DTC143EUA-T106

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

.2 W

30

150 Cel

SILICON

50 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e1

DTC363EUT106

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

YES

200 MHz

.2 W

.6 A

PLASTIC/EPOXY

SWITCHING

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

70

150 Cel

SILICON

20 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

e1

10

260

DTC114ESATP

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

NO

250 MHz

.3 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

BIP General Purpose Small Signal

30

150 Cel

SILICON

50 V

SINGLE

R-PSIP-T3

Not Qualified

BUILT IN BIAS RESISTOR RATIO IS 1

NOT SPECIFIED

NOT SPECIFIED

DTC143TSATP

ROHM

NPN

SINGLE WITH BUILT-IN RESISTOR

NO

250 MHz

.3 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

THROUGH-HOLE

RECTANGULAR

1

3

IN-LINE

BIP General Purpose Small Signal

100

150 Cel

SILICON

50 V

TIN SILVER COPPER

SINGLE

R-PSIP-T3

Not Qualified

BUILT-IN BIAS RESISTOR

e1

DTA113ZETL

ROHM

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.15 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signal

33

150 Cel

SILICON

50 V

TIN SILVER COPPER

DUAL

R-PDSO-G3

1

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 10

e1

10

260

DTA114EUA-T106

ROHM

PNP

SINGLE WITH BUILT-IN RESISTOR

YES

250 MHz

.2 W

.1 A

PLASTIC/EPOXY

SWITCHING

.3 V

GULL WING

RECTANGULAR

1

3

SMALL OUTLINE

BIP General Purpose Small Signals

.2 W

68

150 Cel

SILICON

50 V

DUAL

R-PDSO-G3

1

COLLECTOR

Not Qualified

BUILT-IN BIAS RESISTOR RATIO IS 1

10

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