Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLM7G1822S-80ABGY

BLM7G1822S-80ABGY

Ampleon

RF FET LDMOS 65V 31DB SOT12121

0

BLC8G20LS-400AVY

BLC8G20LS-400AVY

Ampleon

RF FET LDMOS 65V 15.5DB SOT12583

181

BLF13H9LS750PU

BLF13H9LS750PU

Ampleon

BLF13H9LS750P/SOT539/TRAY

55

BLF7G24LS-100,118

BLF7G24LS-100,118

Ampleon

RF FET LDMOS 65V 18DB SOT502B

0

BLF882SU

BLF882SU

Ampleon

RF FET LDMOS 104V 20.6DB SOT502B

21

BLF888A,112

BLF888A,112

Ampleon

RF FET LDMOS 110V 21DB SOT539A

64

BLF8G22LS-220U

BLF8G22LS-220U

Ampleon

RF FET LDMOS 65V 17DB SOT502B

0

BLC8G27LS-240AVU

BLC8G27LS-240AVU

Ampleon

RF FET LDMOS 65V 14DB SOT12521

60

BLF574XRS,112

BLF574XRS,112

Ampleon

RF FET LDMOS 110V 23DB SOT1214B

0

BLC9G15LS-400AVTY

BLC9G15LS-400AVTY

Ampleon

RF FET LDMOS 65V 16DB SOT12583

0

BLF8G38LS-75VU

BLF8G38LS-75VU

Ampleon

RF FET LDMOS 65V 15.5DB SOT1239B

22

ART2K0FEU

ART2K0FEU

Ampleon

ART2K0FE/SOT539/TRAY

205

BLF879P,112

BLF879P,112

Ampleon

RF FET LDMOS 104V 21DB SOT539A

23

BLC8G27LS-210PVZ

BLC8G27LS-210PVZ

Ampleon

RF FET LDMOS 65V 17DB SOT12513

1

BLF188XRGJ

BLF188XRGJ

Ampleon

RF FET LDMOS 135V 24DB SOT1248C

0

BLF7G24LS-140,118

BLF7G24LS-140,118

Ampleon

RF FET LDMOS 65V 18.5DB SOT502B

0

BLF8G20LS-220U

BLF8G20LS-220U

Ampleon

RF FET LDMOS 65V 18.9DB SOT502B

0

BLC10G18XS-551AVTZ

BLC10G18XS-551AVTZ

Ampleon

BLC10G18XS-551AVT/SOT1258/TRAYDP

39

BLM10D3438-35ABZ

BLM10D3438-35ABZ

Ampleon

BLM10D3438-35AB/SOT1462/REELDP

566

BLF7G22LS-200,112

BLF7G22LS-200,112

Ampleon

RF FET LDMOS 65V 18.5DB SOT502B

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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