Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLF645,112

BLF645,112

Ampleon

RF FET LDMOS 65V 16DB SOT540A

68

BLF8G20LS-400PGVQ

BLF8G20LS-400PGVQ

Ampleon

RF FET LDMOS 65V 19DB SOT1242C

60

BLC9G24XS-170AVZ

BLC9G24XS-170AVZ

Ampleon

RF FET LDMOS 65V 15.5DB SOT12753

60

BLP05H6150XRY

BLP05H6150XRY

Ampleon

RF FET LDMOS 135V 27DB SOT12232

87

BLC10M6XS200Y

BLC10M6XS200Y

Ampleon

BLC10M6XS200/SOT1270/REELDP

0

BLC9G20XS-400AVTZ

BLC9G20XS-400AVTZ

Ampleon

RF FET LDMOS 65V 16.2DB SOT1258

52

BLP05H675XRGY

BLP05H675XRGY

Ampleon

RF FET LDMOS 135V 27DB SOT12242

103

BLL6H1214L-250,112

BLL6H1214L-250,112

Ampleon

RF PFET, 1-ELEMENT, L BAND, SILI

25

BLC9G20XS-550AVTZ

BLC9G20XS-550AVTZ

Ampleon

RF FET LDMOS 65V 15.4DB SOT12587

54

BLF571,112

BLF571,112

Ampleon

RF MOSFET LDMOS 50V SOT467C

18

BLP35M805Z

BLP35M805Z

Ampleon

RF FET LDMOS 65V 18DB 16VDFN

315

BLC9G22XS-400AVTZ

BLC9G22XS-400AVTZ

Ampleon

RF FET LDMOS 65V 15.3DB SOT1258

196

BLF2425M8LS140U

BLF2425M8LS140U

Ampleon

RF FET LDMOS 65V 19DB SOT502B

141

CLF1G0035S-100PU

CLF1G0035S-100PU

Ampleon

RF FET HEMT 150V 14DB SOT1228B

20

BLF898SU

BLF898SU

Ampleon

RF MOSFET LDMOS 50V SOT539B

74

BLP10H605Z

BLP10H605Z

Ampleon

RF FET LDMOS 104V 22DB 12VDFN

0

BLA8G1011L-300GU

BLA8G1011L-300GU

Ampleon

RF FET LDMOS 65V 16DB SOT502A

0

BLC8G22LS-450AVZ

BLC8G22LS-450AVZ

Ampleon

RF FET LDMOS 65V 14DB SOT12583

0

BLP7G10S-160PY

BLP7G10S-160PY

Ampleon

RF LDMOS TRANS 160W SOT1223-2

0

BLF8G20LS-400PVJ

BLF8G20LS-400PVJ

Ampleon

RF FET LDMOS 65V 19DB SOT1242B

79

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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