Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLC9G27XS-380AVTZ

BLC9G27XS-380AVTZ

Ampleon

BLC9G27XS-380AVT/SOT1258/TRAYD

106

BLP7G22-10Z

BLP7G22-10Z

Ampleon

RF FET LDMOS 65V 16DB 12VDFN

774

BLF6G13L-250P,112

BLF6G13L-250P,112

Ampleon

RF FET LDMOS 100V 17DB SOT1121A

53

BLF8G20LS-230VU

BLF8G20LS-230VU

Ampleon

RF FET LDMOS 65V 18DB SOT1239B

99

BLF8G22LS-270GV,12

BLF8G22LS-270GV,12

Ampleon

RF FET LDMOS 65V 17.3DB SOT1244C

96

BLF578,112

BLF578,112

Ampleon

RF FET LDMOS 110V 24DB SOT539A

70

BLF8G20LS-230VJ

BLF8G20LS-230VJ

Ampleon

RF FET LDMOS 65V 18DB SOT1239B

95

BLF989U

BLF989U

Ampleon

BLF989/SOT539/TRAY

54

BLF182XRU

BLF182XRU

Ampleon

RF FET LDMOS 135V 28DB SOT1121B

33

BLF8G09LS-400PWU

BLF8G09LS-400PWU

Ampleon

RF FET LDMOS 65V 20.6DB SOT1242B

42

BLF7G20LS-90P,112

BLF7G20LS-90P,112

Ampleon

RF FET LDMOS 65V 19.5DB SOT1121B

0

BLF183XRU

BLF183XRU

Ampleon

RF FET LDMOS 135V 28DB SOT1121A

147

BLC10G22XS-551AVTZ

BLC10G22XS-551AVTZ

Ampleon

BLC10G22XS-551AVT/SOT1258/TRAYDP

36

BLF573,112

BLF573,112

Ampleon

RF MOSFET LDMOS 50V LDMOST

97

BLF6G22LS-40P,118

BLF6G22LS-40P,118

Ampleon

RF FET LDMOS 65V 19DB SOT1121B

36

BLP8G20S-80PY

BLP8G20S-80PY

Ampleon

RF FET LDMOS 65V 17DB SOT12231

0

BLM10D2327-40ABZ

BLM10D2327-40ABZ

Ampleon

BLM10D2327-40AB/SOT1462/REELDP

228

BLS7G3135LS-200U

BLS7G3135LS-200U

Ampleon

RF FET LDMOS 65V 12DB SOT502B

0

BLF6G27LS-40PGJ

BLF6G27LS-40PGJ

Ampleon

RF FET LDMOS 65V 17DB SOT1121E

0

BLF6G38S-25,112

BLF6G38S-25,112

Ampleon

RF FET LDMOS 65V 15DB SOT608B

40

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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