BLF4G20LS-110B,112

Overview

The BLF4G20LS-110B is an N-channel LDMOS power transistor designed for base station applications in the 1800 MHz to 2000 MHz frequency range. It delivers a typical continuous wave output power of 100 W at 28 V drain-source voltage. In GSM EDGE operation at 1930 MHz and 1990 MHz with a quiescent current of 650 mA, it provides 48 W average power with 13.8 dB gain and 38.5% efficiency. The device features excellent ruggedness, capable of withstanding a 10:1 VSWR mismatch under specified conditions.

Feature Summary

• Internally matched for ease of use
• Designed for broadband operation from 1800 MHz to 2000 MHz
• Excellent thermal stability
• Capable of withstanding high load mismatch

Applications

• RF power amplifiers for GSM base stations
• RF power amplifiers for GSM EDGE base stations
• RF power amplifiers for CDMA base stations
• Multicarrier applications in the 1800 MHz to 2000 MHz range

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package version and production status. Ensure ESD precautions are strictly followed during handling due to component sensitivity. Confirm that the application environment remains within the absolute maximum ratings for junction temperature and voltage limits.

Selection Notes

Select this component for UHF band base station designs requiring high linearity and power density. The internal matching network simplifies circuit design compared to unmatched alternatives. Evaluate thermal management requirements based on the junction-to-case thermal resistance values provided in the datasheet to ensure reliable operation under continuous load conditions.

Part Context

This device belongs to the BLF series of UHF power LDMOS transistors manufactured by NXP USA Inc., originally developed under Philips Semiconductors. It utilizes a ceramic earless flanged SOT502B package suitable for high-power RF applications. The technology focuses on providing robust performance for cellular infrastructure equipment operating in the PCS and similar bands.

Replacement Considerations

Consult official replacement lists for discontinued variants. Verify functional compatibility regarding pinout, thermal characteristics, and electrical parameters before substituting.