FLL4101K-4C

Product Overview

FLL4101K-4C is a Fujitsu Semiconductor L-band high-power GaAs FET designed for high-frequency RF power amplifier applications. The device is a partially matched 40W GaAs FET optimized for operation in the 3.4GHz to 3.7GHz frequency range, offering high output power, high gain, high efficiency and excellent linearity. With a hermetically sealed package and reliable RF performance, it is suitable for wireless communication infrastructure, broadband wireless access systems, RF transmitters and industrial microwave applications. :contentReference[oaicite:0]{index=0}

Key Features

• Manufacturer: Fujitsu Semiconductor

• Part Number: FLL4101K-4C

• Device Type: RF Power GaAs FET

• Product Category: High Frequency RF Semiconductor

• Technology: Gallium Arsenide (GaAs) FET

• Frequency Band: L-Band

• Operating Frequency Range: 3.4GHz to 3.7GHz

• Output Power: 40W Class RF Power Device

• Typical Output Power: 46.0dBm

• Typical Gain: 11.5dB

• Power Added Efficiency (PAE): 44% Typical

• Device Configuration: Partially Matched RF FET

• Linearity Performance: High Linearity RF Amplification

• Matching Type: Internal Partial Matching Network

• Package Type: Hermetically Sealed RF Package

• Mounting Type: Through Hole / Flange Mount RF Device

• Application Frequency: Broadband Wireless Communication

• Reliability Feature: High Stability and Long-Term Reliability

• Typical Applications: Wireless Local Loop (WLL), RF Power Amplifiers, Base Station Equipment, Microwave Transmitters and Communication Systems

• Product Status: Legacy / Obsolete RF Component

• Replacement Note: Buyers should verify frequency range, output power, gain, bias conditions, package dimensions and RF matching requirements before selecting replacement devices.

• Datasheet PDF: Fujitsu FLL4101K-4C Datasheet

Applications

FLL4101K-4C is designed for RF power amplification systems requiring high output power and efficient operation in the L-band frequency range. Typical applications include wireless broadband access equipment, communication transmitters, RF repeater systems, microwave links, industrial RF systems and maintenance projects for legacy Fujitsu RF amplifier designs. :contentReference[oaicite:1]{index=1}

Quality & Sourcing

Antrex Electronics can support FLL4101K-4C sourcing with stock availability checks, RFQ quotation, manufacturer verification, package confirmation, date code review and shipment arrangement. For RF semiconductor projects, buyers can provide quantity requirements, acceptable date codes, RF specifications, packaging requirements and application details for faster quotation support.

For quality control, Antrex Electronics can help arrange product photos, marking review, visual inspection, electrical testing and third-party verification when required. OEMs, EMS providers, wireless equipment manufacturers, repair centers and electronic component buyers are welcome to send BOM lists or hard-to-find RF component requests for sourcing assistance.

Datasheet

       Download FLL4101K-4C Datasheet PDF