YES RF Small Signal Field Effect Transistors (FET) 1,826

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Part RoHS Manufacturer Polarity or Channel Type Configuration Surface Mount Maximum Power Dissipation (Abs) Package Body Material Transistor Application Minimum DS Breakdown Voltage Minimum Power Gain (Gp) Terminal Form Package Shape Operating Mode No. of Elements Highest Frequency Band Maximum Drain Current (Abs) (ID) No. of Terminals Package Style (Meter) Sub-Category Field Effect Transistor Technology Maximum Power Dissipation Ambient Maximum Operating Temperature Transistor Element Material Minimum Operating Temperature Terminal Finish 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

BF1212R

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

.18 W

PLASTIC/EPOXY

AMPLIFIER

6 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

.03 pF

934055823115

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

6

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

TIN

.04 A

DUAL

R-PDSO-G6

Not Qualified

LOW NOISE

e3

.05 pF

BF908WRT/R

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

.3 W

PLASTIC/EPOXY

AMPLIFIER

12 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

.04 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

MATTE TIN

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

260

.045 pF

BF1216

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

6 V

GULL WING

RECTANGULAR

ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

6

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

TIN

.03 A

DUAL

R-PDSO-G6

1

Not Qualified

LOW NOISE

e3

934021480215

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

SWITCHING

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

SILICON

TIN

DUAL

R-PDSO-G3

Not Qualified

TO-236AB

e3

PMBFJ308

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

25 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

Tin (Sn)

DUAL

R-PDSO-G3

1

Not Qualified

LOW NOISE

TO-236AB

e3

30

260

2.5 pF

BF1218

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

SWITCHING

6 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

6

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G6

1

Not Qualified

LOW NOISE

e3

BF901

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

12 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

BF556A-TAPE-13

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

BF1101R

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

Matte Tin (Sn)

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

40

260

.035 pF

934020430235

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

TIN

.03 A

DUAL

R-PDSO-G4

1

SOURCE

Not Qualified

LOW NOISE

e3

.035 pF

BF908R-T

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

12 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

45 pF

934055641235

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

SWITCHING

3 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

TIN

.01 A

DUAL

R-PDSO-G4

1

GATE

Not Qualified

e3

BF556B,215

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

TIN

DUAL

R-PDSO-G3

Not Qualified

TO-236AB

e3

BF1109,215

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

11 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

MATTE TIN

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

.04 pF

PMBF4416AT/R

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

35 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

.8 pF

BF556C,215

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

TIN

DUAL

R-PDSO-G3

Not Qualified

TO-236AB

e3

934055157235

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

SWITCHING

3 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

3

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

TIN

.01 A

DUAL

R-PDSO-G3

1

Not Qualified

e3

BF1105WR

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

1

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

e3

.04 pF

BF909A

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

.04 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

.2 W

150 Cel

SILICON

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

.05 pF

BF989-T

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.02 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

PMBF4416TRL

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

SILICON

DUAL

R-PDSO-G3

Not Qualified

.8 pF

BF909TRL

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

e3

.05 pF

BLF202T/R

NXP Semiconductors

N-CHANNEL

SINGLE

YES

CERAMIC, METAL-SEALED COFIRED

AMPLIFIER

40 V

10 dB

GULL WING

RECTANGULAR

ENHANCEMENT MODE

1

VERY HIGH FREQUENCY BAND

8

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

1 A

DUAL

R-CDSO-G8

Not Qualified

BF909T/R

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

.04 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

260

.05 pF

BF556A

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

SWITCHING

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

Tin (Sn)

DUAL

R-PDSO-G3

1

Not Qualified

TO-236AB

e3

30

260

BF909AWRT/R

NXP Semiconductors

N-CHANNEL

COMPLEX

YES

PLASTIC/EPOXY

AMPLIFIER

7 V

GULL WING

RECTANGULAR

DUAL GATE, ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

SILICON

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

.05 pF

BF998RT/R

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

.2 W

PLASTIC/EPOXY

AMPLIFIER

12 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

2

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

LOW NOISE

e3

260

BF545A-T

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

SWITCHING

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

TO-236AB

BF545A-TAPE-13

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

BF513TRL13

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G3

Not Qualified

e3

BF545B-TAPE-7

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

BF992T/R

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

.2 W

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

.04 A

4

SMALL OUTLINE

FET General Purpose Power

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

Tin (Sn)

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

e3

40

260

.04 pF

BF992TRL13

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.04 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

e3

BF511-TAPE-7

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G3

Not Qualified

.4 pF

BF513

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

Tin (Sn)

.03 A

DUAL

R-PDSO-G3

1

Not Qualified

LOW NOISE

e3

30

260

.4 pF

BF511

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

Tin (Sn)

.03 A

DUAL

R-PDSO-G3

1

Not Qualified

LOW NOISE

e3

30

260

.4 pF

BF545C-TAPE-7

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

DUAL

R-PDSO-G3

Not Qualified

BF510

NXP Semiconductors

N-CHANNEL

SINGLE

YES

.25 W

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

Other Transistors

JUNCTION

150 Cel

SILICON

Tin (Sn)

.03 A

DUAL

R-PDSO-G3

1

Not Qualified

LOW NOISE

e3

30

260

.4 pF

BF510-T

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

.4 pF

BF510TRL

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G3

Not Qualified

e3

BF997-TAPE-13

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

BF990AR-TAPE-7

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

18 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

BF996S-TAPE-13

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

4

SMALL OUTLINE

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G4

SOURCE

Not Qualified

BF996S,215

NXP Semiconductors

N-CHANNEL

SINGLE WITH BUILT-IN DIODE

YES

.2 W

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DUAL GATE, DEPLETION MODE

1

ULTRA HIGH FREQUENCY BAND

.03 A

4

SMALL OUTLINE

FET General Purpose Powers

METAL-OXIDE SEMICONDUCTOR

150 Cel

SILICON

TIN

.03 A

DUAL

R-PDSO-G4

1

SOURCE

Not Qualified

e3

30

260

BF511-T

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

20 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

.03 A

DUAL

R-PDSO-G3

Not Qualified

LOW NOISE

.4 pF

BF545CTRL

NXP Semiconductors

N-CHANNEL

SINGLE

YES

PLASTIC/EPOXY

AMPLIFIER

30 V

GULL WING

RECTANGULAR

DEPLETION MODE

1

VERY HIGH FREQUENCY BAND

3

SMALL OUTLINE

JUNCTION

150 Cel

SILICON

TIN

DUAL

R-PDSO-G3

Not Qualified

e3

BLF188XR,112

NXP Semiconductors

N-CHANNEL

COMMON SOURCE, 2 ELEMENTS

YES

CERAMIC, METAL-SEALED COFIRED

AMPLIFIER

135 V

FLAT

RECTANGULAR

ENHANCEMENT MODE

2

ULTRA HIGH FREQUENCY BAND

4

FLANGE MOUNT

METAL-OXIDE SEMICONDUCTOR

SILICON

DUAL

R-CDFM-F4

SOURCE

RF Small Signal Field Effect Transistors (FET)

RF Small Signal Bipolar Junction Transistors (BJT) are electronic devices used in low-power RF (radio frequency) applications to amplify and control small signals. They are commonly used in applications such as wireless communication, GPS, and radio broadcasting.

RF Small Signal BJTs are designed to handle low-power levels and operate at high frequencies, typically in the range of a few MHz to several GHz. They have a high gain and low noise figure, making them suitable for small signal amplification.

The RF 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.

RF Small Signal Field Effect Transistors (FET) are electronic devices used in low-power RF (radio frequency) applications to amplify and control small signals. They are commonly used in applications such as wireless communication, GPS, and radio broadcasting.

RF Small Signal FETs are designed to handle low-power levels and operate at high frequencies, typically in the range of a few MHz to several GHz. They have a high gain and low noise figure, making them suitable for small signal amplification.

The RF Small Signal FET consists of a gate, source, and drain electrode, and works by controlling the flow of majority charge carriers (electrons or holes) between the source and drain regions through the gate electrode. When a voltage is applied to the gate electrode, it creates an electric field that modifies the conductivity of the channel, allowing current to flow between the source and drain.