Transistors - FETs, MOSFETs - RF

Image Part Number Description / PDF Quantity Rfq
BF1210,115

BF1210,115

NXP Semiconductors

FET RF 6V 400MHZ 6TSSOP

3000

BF909R,215

BF909R,215

NXP Semiconductors

N-CHANNEL POWER MOSFET

2900

UPA571T-T1-A

UPA571T-T1-A

Renesas Electronics America

SMALL SIGNAL FET

30000

BLP10H603Z

BLP10H603Z

Ampleon

RF FET LDMOS 104V 22DB 12VDFN

0

BLA1011-2,112

BLA1011-2,112

Ampleon

RF FET LDMOS 75V 16DB SOT538A

0

BLF174XR,112

BLF174XR,112

Ampleon

RF FET LDMOS 110V 28DB SOT1214A

4

BTS132E3129NKSA1

BTS132E3129NKSA1

IR (Infineon Technologies)

BTS132 - N-CHANNEL TEMPFET

23500

BLF8G09LS-400PWJ

BLF8G09LS-400PWJ

Ampleon

RF FET LDMOS 65V 20.6DB SOT1242B

69

BLC8G24LS-241AVY

BLC8G24LS-241AVY

Ampleon

RF FET LDMOS 65V 14.5DB SOT12521

0

CPH6314-TL-E

CPH6314-TL-E

PCH 4V DRIVE SERIES

60000

SD4931

SD4931

STMicroelectronics

TRANSISTOR RF MOSFET N-CH M174

0

BLF888,112

BLF888,112

Ampleon

RF TRANSISTOR

172

2N5950

2N5950

SMALL SIGNAL FET

2438

CPH5819-TL-E

CPH5819-TL-E

NCH+SBD 4V DRIVE SERIES

9000

BLC2425M10LS250Z

BLC2425M10LS250Z

Ampleon

BLC2425M10LS250/SOT1273/TRAYDP

147

PD85035STR-E

PD85035STR-E

STMicroelectronics

TRANS RF N-CH FET POWERSO-10RF

0

ARF466BG

ARF466BG

Roving Networks / Microchip Technology

RF FET N CH 1000V 13A TO264

7

CGHV14800F

CGHV14800F

Wolfspeed - a Cree company

RF MOSFET HEMT 50V 440117

50

MRF6VP41KHR7

MRF6VP41KHR7

Freescale Semiconductor, Inc. (NXP Semiconductors)

POWER, N-CHANNEL, MOSFET

3

TAV-551+

TAV-551+

SMT LOW NOISE AMPLIFIER, 45 - 60

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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