Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BLS8G2731LS-400PU

BLS8G2731LS-400PU

Ampleon

RF FET LDMOS 65V 13DB SOT539B

20

BLS9G2735L-50U

BLS9G2735L-50U

Ampleon

RF MOSFET SOT1135A

35

BLL9G1214LS-600U

BLL9G1214LS-600U

Ampleon

BLL9G1214LS-600/SOT502/TRAY

2

BLF8G22LS-200GV,12

BLF8G22LS-200GV,12

Ampleon

RF FET LDMOS 65V 19DB SOT1244C

0

BLF884P,112

BLF884P,112

Ampleon

RF FET LDMOS 104V 21DB SOT1121A

8

BLC10G18XS-550AVTY

BLC10G18XS-550AVTY

Ampleon

BLC10G18XS-550AVT/SOT1258/REEL

0

BLF8G22LS-205VU

BLF8G22LS-205VU

Ampleon

RF FET LDMOS 65V 18.3DB SOT1239B

60

BLF8G20LS-400PGVJ

BLF8G20LS-400PGVJ

Ampleon

RF FET LDMOS 65V 19DB SOT1242C

96

BLP05H6110XRY

BLP05H6110XRY

Ampleon

RF FET LDMOS 135V 27DB SOT1223-2

37

BLS6G3135-120,112

BLS6G3135-120,112

Ampleon

RF FET LDMOS 60V 11DB SOT502A

0

BLF2324M8LS200PJ

BLF2324M8LS200PJ

Ampleon

RF FET LDMOS 65V 17.2DB SOT539B

0

BLF0910H6LS500U

BLF0910H6LS500U

Ampleon

RF FET LDMOS 65V 14.8DB SOT12751

17

BLC8G27LS-100AVY

BLC8G27LS-100AVY

Ampleon

RF FET LDMOS 65V 15.5DB SOT12751

2

BLL6H1214LS-500,11

BLL6H1214LS-500,11

Ampleon

RF FET LDMOS 100V 17DB SOT502B

0

BLP05H6350XRY

BLP05H6350XRY

Ampleon

RF FET LDMOS 135V 27DB SOT12232

80

BLF8G19LS-170BVU

BLF8G19LS-170BVU

Ampleon

RF FET LDMOS 65V 18DB SOT1120B

0

BLF6G13LS-250P,112

BLF6G13LS-250P,112

Ampleon

RF MOSFET LDMOS 50V LDMOST

59

BLF6G22LS-130,112

BLF6G22LS-130,112

Ampleon

RF FET LDMOS 65V 17DB SOT502B

0

BLF6G38-100,112

BLF6G38-100,112

Ampleon

RF PFET, 1-ELEMENT, S BAND, SILI

36

BLF871S,112

BLF871S,112

Ampleon

RF PFET

7

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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