BLF184XRSU

Overview

The BLF184XRSU is a 700 W extremely rugged LDMOS power transistor designed for broadcast and industrial applications in the HF to 600 MHz band. It operates with a drain-source voltage of 50 V and delivers a typical power gain of 23.9 dB at 108 MHz under pulsed RF conditions (tp = 100 µs, duty cycle = 20%). The device achieves a typical drain efficiency of 73.5% and features an integrated ESD protection circuit. Packaged in the SOT1214B earless flanged ceramic outline, it provides excellent thermal stability and high efficiency suitable for broadband operation.

Feature Summary

• Designed for broadband operation across the HF to 600 MHz frequency range
• Features integrated electrostatic discharge (ESD) protection
• Provides easy power control and excellent thermal stability
• Capable of withstanding severe load mismatches corresponding to VSWR > 65:1

Applications

• Industrial, scientific and medical (ISM) applications
• Broadcast transmitter applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package variations. Ensure compliance with RoHS directives as specified in the product data sheet. Confirm that the component status remains active before initiating design-in processes. Cross-reference the part number with official Ampleon sales channels for accurate availability and technical support.

Selection Notes

Select this component for high-power RF amplification requiring robustness against load mismatches. Evaluate thermal management requirements based on the junction-to-case thermal resistance of 0.18 K/W. Consider the operating frequency range and ensure the application falls within the HF to 600 MHz specification. Verify biasing conditions align with the recommended class-AB production test circuit parameters.

Part Context

The BLF184XRSU belongs to the BLF184XR series manufactured by Ampleon. It utilizes an LDMOS technology platform optimized for high power density and ruggedness. The 'S' suffix indicates the SOT1214B earless flanged ceramic package variant, distinguishing it from the standard flanged version. This family targets demanding broadcast and industrial RF environments.

Replacement Considerations

Consult the official Ampleon datasheet for direct substitute part numbers or alternative packages within the same series. Verify pinout compatibility and thermal characteristics when considering cross-references. Ensure any replacement maintains the required VSWR tolerance and power output specifications.