Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
FSS173-TL-E

FSS173-TL-E

PCH 4V DRIVE SERIES

78000

BLF0910H6L500U

BLF0910H6L500U

Ampleon

RF MOSFET LDMOS 50V SOT502A

0

SD2942W

SD2942W

STMicroelectronics

IC TRANS RF HF/VHF/UHF M244

0

BLS6G2731S-120,112

BLS6G2731S-120,112

Ampleon

RF S BAND, N-CHANNEL

19

BLM8G0710S-60PBGY

BLM8G0710S-60PBGY

Ampleon

RF FET LDMOS 65V 36.2DB SOT12122

85

BLC10G15XS-301AVTZ

BLC10G15XS-301AVTZ

Ampleon

BLC10G15XS-301AVT/SOT1275/TRAYDP

43

AFV121KHR5

AFV121KHR5

NXP Semiconductors

IC TRANS RF LDMOS

0

BLF8G22LS-200V,118

BLF8G22LS-200V,118

Ampleon

RF FET LDMOS 65V 19DB SOT1244B

0

BLF8G22LS-200GVJ

BLF8G22LS-200GVJ

Ampleon

RF FET LDMOS 65V 19DB SOT1244C

0

MRF24301HR5

MRF24301HR5

NXP Semiconductors

250W AF17 2450MHZ NI-780

100

BF909WR,115

BF909WR,115

NXP Semiconductors

N-CHANNEL POWER MOSFET

3000

BLP7G22-05Z

BLP7G22-05Z

Ampleon

RF FET LDMOS 65V 16DB 12VDFN

0

2SK3072-TB-E

2SK3072-TB-E

NCH 4V DRIVE SERIES

79014

BLF7G22LS-250P,112

BLF7G22LS-250P,112

NXP Semiconductors

N-CHANNEL, MOSFET

60

2SJ637-E

2SJ637-E

PCH 4V DRIVE SERIES

3960

BLF8G24LS-100GVQ

BLF8G24LS-100GVQ

Ampleon

RF FET LDMOS 65V 18DB SOT1244C

91

A2G35S200-01SR3

A2G35S200-01SR3

NXP Semiconductors

AIRFAST RF POWER GAN TRANSISTOR

182

MRFE6VP6300HR5

MRFE6VP6300HR5

NXP Semiconductors

FET RF 2CH 130V 230MHZ NI780-4

379

CGHV31500F

CGHV31500F

Wolfspeed - a Cree company

RF MOSFET HEMT 50V 440217

35

MRF9030LR1

MRF9030LR1

NXP Semiconductors

FET RF 68V 945MHZ NI-360

0

Transistors - FETs, MOSFETs - RF

1. Overview

RF FETs and MOSFETs are critical semiconductor devices designed for high-frequency signal amplification and switching in radio frequency (RF) applications. These transistors operate efficiently in microwave and RF circuits, enabling wireless communication, radar systems, and broadcasting equipment. Their ability to handle high frequencies (typically above 1 MHz) with minimal noise and distortion makes them indispensable in modern telecommunications infrastructure.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Junction FET (JFET)Voltage-controlled device with low noise and high input impedanceLow-noise amplifiers in RF receivers
MESFETMetal-Semiconductor FET with GaAs substrate for high-speed operationSatellite communication systems
HEMT/PHEMTHigh-electron-mobility transistor with pseudomorphic structures5G base stations, microwave amplifiers
LDMOSLateral Diffused MOSFET with high power density and thermal stabilityCellular base station amplifiers
GaN HEMTGallium Nitride-based HEMT for ultra-high frequency/powerRadar systems, 5G mmWave

3. Structure and Composition

RF FETs typically feature a three-terminal structure (source, gate, drain) with a semiconductor channel (Si, GaAs, or GaN). The gate region uses Schottky contacts (MESFET) or insulated layers (MOSFET). Advanced devices like HEMTs employ heterojunctions between different semiconductor materials (e.g., AlGaN/GaN) to enhance electron mobility. Packaging includes ceramic or plastic enclosures with RF-compatible connectors to minimize parasitic capacitance and inductance.

4. Key Technical Specifications

ParameterDescriptionImportance
Frequency RangeOperational bandwidth (e.g., 0.1-6 GHz)Determines application suitability
Power Output (P1dB)1dB compression point (e.g., 10-500W)Measures linearity and saturation
Gain (S21)Signal amplification ratio (e.g., 10-30 dB)System sensitivity indicator
Efficiency (PAE)Power-added efficiency (e.g., 40-75%)Energy consumption metric
Input/Output VSWRVoltage Standing Wave Ratio (e.g., <2:1)Mismatch loss assessment

5. Application Fields

  • Telecommunications: 5G/4G base stations, small cells, fiber-optic networks
  • Defense: Radar systems, electronic warfare, UAV communication
  • Broadcasting: FM/TV transmitters, satellite uplinks
  • Medical: MRI machines, RF ablation equipment
  • Industrial: Plasma generators, RFID readers

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Specifications
NXP SemiconductorsMRF1K50GN50W GaN HEMT, 1.8-2.7GHz, 70% PAE
Wolfspeed (Cree)CGH4G090400F400W GaN HEMT, 900MHz, 10:1 VSWR ruggedness
InfineonBLS14H10LS-250250W LDMOS, 1.8-2.2GHz, 14dB gain
MACOMNPT1007SiGe HBT, 7GHz, 18dB gain for 5G

7. Selection Recommendations

  1. Match operating frequency to device transition frequency (fT)
  2. Verify power handling with derating curves under working temperatures
  3. Assess package thermal resistance (Rth) for longevity
  4. Compare S-parameters for impedance matching requirements
  5. Consider ESD protection and ruggedness for field conditions

8. Industry Trends

Key trends include: - Wide bandgap materials (GaN/SiC) enabling higher efficiency (>80%) at mmWave frequencies - 3D packaging for reduced parasitics in 5G massive MIMO systems - Integrated RF frontend modules (FEM) with on-chip matching networks - AI-driven design optimization for complex impedance matching - Growing adoption of GaN-on-diamond substrates for thermal management

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