Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLM8G0710S-30PBY

BLM8G0710S-30PBY

Ampleon

RF FET LDMOS 65V 35DB SOT12112

106

BLF0910H9LS600J

BLF0910H9LS600J

Ampleon

BLF0910H9LS600/SOT502/REEL

0

BLF7G27LS-100,112

BLF7G27LS-100,112

Ampleon

RF FET LDMOS 65V 18DB SOT502B

0

BLA9H0912LS-1200PU

BLA9H0912LS-1200PU

Ampleon

BLA9H0912LS-1200P/SOT539/TRAY

57

BLF8G22LS-220J

BLF8G22LS-220J

Ampleon

RF FET LDMOS 65V 17DB SOT502B

0

BLF2425M7L250P,118

BLF2425M7L250P,118

Ampleon

RF FET LDMOS 65V 15DB SOT539A

0

BLP10H603AZ

BLP10H603AZ

Ampleon

RF FET LDMOS 104V 22DB 12VDFN

30

BLA9H0912L-1200PU

BLA9H0912L-1200PU

Ampleon

BLA9H0912L-1200P/SOT539/TRAY

24

BLM8G0710S-45ABY

BLM8G0710S-45ABY

Ampleon

RF FET LDMOS 65V 35DB SOT12112

160

BLF8G27LS-100GVJ

BLF8G27LS-100GVJ

Ampleon

RF FET LDMOS 65V 17DB SOT1244C

1

BLF644PU

BLF644PU

Ampleon

RF FET LDMOS 65V 23.5DB SOT1228A

62

BLC10G20LS-240PWTZ

BLC10G20LS-240PWTZ

Ampleon

RF MOSFET LDMOS 28V SOT1275-3

23

BLS6G2731-120,112

BLS6G2731-120,112

Ampleon

RF FET LDMOS 60V 13.5DB SOT502A

46

BLF8G27LS-150GVQ

BLF8G27LS-150GVQ

Ampleon

RF FET LDMOS 65V 18DB SOT1244C

98

BLC9G20LS-361AVTZ

BLC9G20LS-361AVTZ

Ampleon

RF FET LDMOS 65V 15.7DB SOT12583

60

BLL9G1214L-600U

BLL9G1214L-600U

Ampleon

BLL9G1214L-600/SOT502/TRAY

1

BLF184XRSU

BLF184XRSU

Ampleon

RF FET LDMOS 135V 23DB SOT1214B

37

BLC9G22LS-120VTZ

BLC9G22LS-120VTZ

Ampleon

BLC9G22LS-120VT/SOT1271/TRAYDP

41

BLF8G22LS-200V,112

BLF8G22LS-200V,112

Ampleon

RF FET LDMOS 65V 19DB SOT1244B

0

BLC2425M10LS500PZ

BLC2425M10LS500PZ

Ampleon

BLC2425M10LS500P/SOT1250/TRAYDP

166

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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