BLF2043,135

Overview

The BLF2043 is a UHF power LDMOS transistor designed for broadband operation from HF to 2200 MHz. It delivers 10 W PEP output power with 12 dB gain and 36.5% efficiency at a 26 V supply voltage and 85 mA quiescent current. The device features a drain-source breakdown voltage of 65 V, a maximum drain current of 2.2 A, and a junction temperature rating up to 200 °C. Packaged in the SOT538A ceramic surface mount format, it includes no internal matching network to facilitate flexible circuit design.

Feature Summary

• Broadband capability spanning HF to 2200 MHz without internal matching
• High ruggedness supporting VSWR mismatches up to 10:1
• Excellent thermal stability and easy power control

Applications

• RF power amplifiers for GSM, EDGE, and CDMA base stations
• Multicarrier applications within the HF to 2200 MHz range
• Broadcast drivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and reel specifications. Confirm RoHS compliance status as manufacturing processes may evolve. Ensure anti-static handling protocols are followed during transport and assembly to prevent electrostatic discharge damage.

Selection Notes

Select this component for designs requiring high power gain and excellent thermal stability in broadband RF environments. Ensure the application circuit can maintain the recommended thermal resistance from junction to heatsink. Verify that the operating frequency falls within the specified HF to 2200 MHz range for optimal performance.

Part Context

Originally developed by Philips Semiconductors, this part was transferred to Ampleon when the division became an independent company in December 2015. The BLF2043 belongs to a family of UHF power LDMOS transistors optimized for base station and broadcast driver applications.

Replacement Considerations

Consult official substitution lists for equivalent devices. Verify pinout compatibility and electrical parameters before replacing the original component in existing designs.

FAQ

Does the BLF2043 include internal matching networks?

No, the device is designed for broadband operation without internal matching networks.

What is the maximum load mismatch the device can withstand?

It can withstand a load mismatch corresponding to a VSWR of 10:1 through all phases under rated conditions.

What is the typical intermodulation distortion level?

The typical third-order intermodulation distortion (dim) is -32 dBc at 10 W PEP output.