BLF7G24L-140,118

Overview

The BLF7G24L-140 is a 140 W LDMOS power transistor designed for base station applications in the 2300 MHz to 2400 MHz frequency range. It supports single carrier IS-95 and 3GPP W-CDMA modes. Key electrical parameters include a drain-source voltage of 65 V, a gate-source threshold voltage ranging from 1.5 V to 2.3 V, and a forward transconductance of 1.87 S. The device features a thermal resistance from junction to case of 0.28 K/W at Tcase = 80 °C and PL = 125 W. In typical class-AB operation at 28 V, it delivers an average output power of 30 W with a power gain of 18.5 dB and a drain efficiency of 26.5% for IS-95.

Feature Summary

• Internally matched for ease of use
• Integrated ESD protection
• Low Rth providing excellent thermal stability
• Designed for low memory effects providing excellent digital pre-distortion capability

Applications

• RF power amplifiers for base stations in the 2300 MHz to 2400 MHz frequency range
• Multi-carrier applications
• Single carrier IS-95 systems
• 3GPP W-CDMA systems

Procurement Notes

Verify the specific package variant required for the design: BLF7G24L-140 uses the SOT502A flanged ceramic package with mounting holes, while BLF7G24LS-140 uses the SOT502B earless flanged package. Confirm RoHS compliance status and check the latest Ampleon datasheet revision for any updates to absolute maximum ratings or recommended operating conditions before finalizing procurement specifications.

Selection Notes

Select the BLF7G24L-140 when mechanical mounting via two holes is preferred, corresponding to the SOT502A package. Choose the BLF7G24LS-140 (SOT502B) if an earless flanged configuration is necessary for the application layout. Ensure the thermal management system can maintain the junction temperature within the 200 °C limit under the specified load conditions.

Part Context

This component belongs to the Ampleon BLF7G series of LDMOS power transistors. These devices are engineered for high ruggedness and efficiency in cellular infrastructure. The BLF7G24L-140 specifically targets the 2300-2400 MHz band, offering a balance of power output and linearity suitable for modern digital modulation schemes requiring robust performance.

Replacement Considerations

The BLF7G24LS-140 serves as the direct functional equivalent with a different mechanical footprint (SOT502B vs SOT502A). No other cross-compatible part numbers are officially documented in the provided datasheet. Verify pinout compatibility and thermal interface requirements when considering alternative suppliers.