BLF182XRU

Overview

The BLF182XRU is a 250 W LDMOS power transistor designed for broadcast and industrial applications in the HF to 600 MHz band. It features an SOT1121A flanged ceramic package with two mounting holes and four leads. The device operates at a drain-source voltage of 50 V, delivering 250 W output power with 28 dB gain and 75% drain efficiency under pulsed RF conditions at 108 MHz. Continuous wave operation at 81.36 MHz provides 235 W output with 82% efficiency. The component exhibits excellent ruggedness, capable of withstanding a VSWR greater than 65:1 through all phases.

Feature Summary

• Integrated double-sided ESD protection
• Excellent thermal stability
• Easy power control
• High efficiency

Applications

• Industrial, scientific and medical applications
• Broadcast transmitter applications

Procurement Notes

Verify the specific ordering suffix against official Ampleon documentation to confirm the exact package variant. The BLF182XRU corresponds to the SOT1121A flanged ceramic package with two mounting holes. Confirm RoHS compliance status and ensure that handling procedures strictly follow electrostatic discharge precautions as outlined in the manufacturer's guidelines.

Selection Notes

Select this component for high-power RF amplification within the HF to 600 MHz frequency range. Ensure the design accommodates the required 50 V drain supply and manages thermal dissipation effectively given the junction-to-case thermal resistance. Verify that the application environment meets the specified operating temperature limits and that impedance matching networks align with the typical push-pull impedance values provided in the datasheet.

Part Context

The BLF182XRU belongs to the BLF182XR series manufactured by Ampleon USA Inc. This series includes variants such as the BLF182XRS, which utilizes an earless flanged ceramic package (SOT1121B). Both variants share identical electrical characteristics but differ in physical mounting configurations. The BLF182XRU specifically denotes the version with two mounting holes for secure mechanical attachment.

Replacement Considerations

The BLF182XRS serves as a direct functional substitute with identical electrical specifications, differing only in its SOT1121B earless flanged package. Designers must verify mechanical compatibility when swapping between the SOT1121A and SOT1121B packages.