Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLM8D1822-25BZ

BLM8D1822-25BZ

Ampleon

RF MOSFET LDMOS SOT1462-1

0

BLF8G10LS-300PJ

BLF8G10LS-300PJ

Ampleon

RF FET LDMOS 65V 20.5DB SOT539B

69

BLF8G22LS-270V,112

BLF8G22LS-270V,112

Ampleon

RF FET LDMOS 65V 17.3DB SOT1244B

0

BLC9G21LS-60AVZ

BLC9G21LS-60AVZ

Ampleon

BLC9G21LS-60AV/SOT1275/TRAYDP

60

BLC10G19XS-551AVZ

BLC10G19XS-551AVZ

Ampleon

BLC10G19XS-551AV/SOT1258/TRAYDP

70

BLA9H0912LS-250GU

BLA9H0912LS-250GU

Ampleon

BLA9H0912LS-250G/SOT502/TRAY

105

BLP25M710Z

BLP25M710Z

Ampleon

RF FET LDMOS 65V 16DB 12VDFN

113

BLU9H0408L-800PU

BLU9H0408L-800PU

Ampleon

BLU9H0408L-800P/SOT539/TRAY

46

BLF10H6600PSU

BLF10H6600PSU

Ampleon

RF FET LDMOS 110V 20.8DB SOT539B

0

BLC9G20LS-150PVZ

BLC9G20LS-150PVZ

Ampleon

RF FET LDMOS 65V SOT12753

60

BLP8G10S-45PGY

BLP8G10S-45PGY

Ampleon

RF FET LDMOS 65V 20.8DB 4BESOP

200

BLC9G20LS-120VZ

BLC9G20LS-120VZ

Ampleon

RF FET LDMOS 65V 19.2DB SOT12753

52

BLP0427M9S20GZ

BLP0427M9S20GZ

Ampleon

BLP0427M9S20GZ/SOT1483/REELDP

422

BLF2425M7L250P,112

BLF2425M7L250P,112

Ampleon

RF FET LDMOS 65V 15DB SOT539A

40

BLP05H6700XRY

BLP05H6700XRY

Ampleon

RF MOSFET LDMOS 50V SOT1138-2

56

BLA8G1011L-300U

BLA8G1011L-300U

Ampleon

RF FET LDMOS 65V 16DB SOT502A

0

BLM8G0710S-15PBY

BLM8G0710S-15PBY

Ampleon

RF FET LDMOS 65V 36.1DB SOT12112

82

BLF8G27LS-100GVQ

BLF8G27LS-100GVQ

Ampleon

RF FET LDMOS 65V 17DB SOT1244C

87

BLC9G15XS-400AVTZ

BLC9G15XS-400AVTZ

Ampleon

RF MOSFET LDMOS 32V SOT1258-7

69

BLM7G1822S-20PBY

BLM7G1822S-20PBY

Ampleon

RF FET LDMOS 65V 32.3DB SOT12111

23

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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