BLF6G38S-25,118

Overview

The BLF6G38S-25 is a 25 W LDMOS power transistor designed for base station applications in the 3400 MHz to 3800 MHz frequency range. It operates with a drain-source voltage of 65 V and features an internally matched design for ease of use. Typical performance at 3400 MHz to 3600 MHz includes an average output power of 4.5 W, power gain of 15 dB, and drain efficiency of 24% under single-carrier N-CDMA conditions. The device exhibits excellent ruggedness, capable of withstanding a load mismatch corresponding to VSWR = 10:1 through all phases. It incorporates integrated ESD protection and RoHS compliance.

Feature Summary

• Internally matched for simplified circuit integration
• Integrated electrostatic discharge (ESD) protection
• Excellent thermal stability and high efficiency
• Robust operation under significant load mismatch

Applications

• RF power amplifiers for base stations
• Multicarrier applications in the 3400 MHz to 3800 MHz range
• WiMAX power amplification

Procurement Notes

Verify the specific package variant required, as the S-25 suffix denotes the earless flanged SOT608B package. Confirm that the application environment supports the specified junction temperature limits and thermal resistance characteristics. Ensure compatibility with the 28 V supply voltage and check for any export control regulations applicable to this component.

Selection Notes

Select the BLF6G38S-25 when an earless flanged ceramic package is preferred over the standard flanged version. This component is optimized for broadband operation between 3400 MHz and 3800 MHz. Consider the thermal management requirements associated with the 1.8 K/W junction-to-case thermal resistance for sustained 25 W output power operations.

Part Context

This component belongs to the Ampleon WiMAX power LDMOS transistor family. It shares core electrical specifications with the BLF6G38-25, differing primarily in the physical package configuration. The BLF6G38S-25 utilizes the SOT608B outline, which is a ceramic earless flanged package, whereas the non-S variant uses the SOT608A flanged ceramic package with mounting holes.

Replacement Considerations

The BLF6G38-25 serves as a direct functional equivalent but utilizes the SOT608A package. Substitution requires verifying mechanical fitment due to the difference between the earless flanged SOT608B and the standard flanged SOT608A. No other official substitutes are documented.