BLF6G20S-45,112

Overview

The BLF6G20S-45 is a 45 W LDMOS power transistor designed for base station applications in the 1800 MHz to 2000 MHz frequency range. It operates with a drain-source voltage of 28 V and features an internal matching network. In typical two-carrier W-CDMA operation at 1805 MHz and 1880 MHz, it delivers an average output power of 2.5 W with a power gain of 19.2 dB and drain efficiency of 14%. The device has a maximum drain-source voltage rating of 65 V and a junction temperature limit of 225 °C. It utilizes a ceramic earless flanged package (SOT608B) with two leads.

Feature Summary

• Internally matched for ease of use
• Integrated ESD protection
• Excellent ruggedness against load mismatch
• High efficiency and thermal stability

Applications

• RF power amplifiers for W-CDMA base stations
• Multi-carrier applications in the 1800 MHz to 2000 MHz range

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing components. Confirm that the device meets current RoHS compliance standards as specified in the product data sheet. Ensure proper handling procedures are followed due to electrostatic discharge sensitivity during transport and installation.

Selection Notes

Select this component for broadband RF power amplifier designs operating between 1800 MHz and 2000 MHz. Consider the SOT608B package dimensions and thermal resistance characteristics for heat sink design. Verify compatibility with class-AB biasing requirements and ensure the application can support the specified quiescent current levels.

Part Context

This part belongs to the BLF6G20 series of LDMOS power transistors manufactured by Ampleon USA Inc. The 'S' designation indicates the earless flanged package version (SOT608B), distinct from the standard flanged package (SOT608A). These devices are engineered specifically for high-performance wireless infrastructure applications requiring robust linearity and power output.

Replacement Considerations

The datasheet lists the BLF6G20-45 as a related part number differing primarily in package type (SOT608A vs SOT608B). No other official substitute part numbers are documented in the provided source material.