BLF8G20LS-400PVQ

Overview

The BLF8G20LS-400PVQ is a 400 W LDMOS power transistor designed for base station applications in the 1805 MHz to 1995 MHz frequency range. It features improved video bandwidth (VBW) of 120 MHz typical, high efficiency, and low thermal resistance. The device operates at VDS = 28 V with IDq = 3400 mA, delivering PL(AV) = 95 W, Gp = 19 dB, and drain efficiency of 28%. It includes integrated ESD protection and is internally matched for ease of use.

Feature Summary

• Decoupling leads enable improved Video Bandwidth (VBW) for enhanced signal fidelity.
• Low output capacitance improves performance in Doherty amplifier configurations.
• Optimized design minimizes memory effects, providing excellent pre-distortability.
• Internally matched structure simplifies circuit integration and deployment.

Applications

• RF power amplifiers for base stations
• Multi-carrier applications in the 1805 MHz to 1995 MHz frequency range

Procurement Notes

Verify the specific package variant required: BLF8G20LS-400PV uses SOT1242B (straight lead), while BLF8G20LS-400PGV uses SOT1242C (gull-wing). Confirm RoHS compliance status and check the latest NXP datasheet revision for any updates to limiting values or thermal characteristics before finalizing procurement specifications.

Selection Notes

Select this component for broadband base station designs requiring high linearity and ruggedness. Ensure the application supports Class-AB operation at 28 V. Verify that the PCB layout accommodates the earless flanged ceramic package dimensions and provides adequate thermal management for the junction-to-case thermal resistance.

Part Context

This part belongs to the BLF8G20LS series of power LDMOS transistors from NXP Semiconductors. It is specifically engineered for wideband RF applications, offering superior video bandwidth compared to standard variants. The device is suitable for modern cellular infrastructure where spectral efficiency and linear amplification are critical requirements.

Replacement Considerations

BLF8G20LS-400PV (SOT1242B)

FAQ

What is the typical Video Bandwidth (VBW) of this transistor?

The typical VBW is 120 MHz when measured in a class-AB test circuit operating in the 1800 MHz to 1880 MHz frequency band.

Is the device compatible with Doherty amplifier architectures?

Yes, the device features lower output capacitance specifically designed to improve performance in Doherty applications.

What is the maximum drain-source voltage rating?

The absolute maximum drain-source voltage (VDS) is rated at 65 V.