MRF300AN

Overview

The MRF300AN is a wideband RF power LDMOS transistor designed for HF and VHF communications, ISM, broadcast, and aerospace applications. It delivers up to 300 W continuous wave output power across the 1.8–250 MHz frequency range with a 50 Vdc operating voltage. The device features high ruggedness, capable of withstanding severe load mismatches exceeding 65:1 without degradation. It includes integrated ESD protection and is characterized for operation from 30 to 50 Vdc.

Feature Summary

• Mirror pinout versions available to simplify push-pull configurations
• Integrated ESD protection with extended negative gate-source voltage range
• Suitable for linear application requirements
• Included in product longevity program with assured supply

Applications

• Industrial, scientific, and medical (ISM) systems including laser generation and plasma etching
• Radio and VHF TV broadcast transmitters
• HF and VHF communications equipment
• Switch mode power supplies

Procurement Notes

Verify the specific package variant required, as the MRF300BN offers a mirror pinout configuration compared to the MRF300AN. Confirm that the intended operating voltage falls within the characterized 30 to 50 Vdc range. Ensure thermal management solutions accommodate the specified junction-to-case thermal resistance values under continuous wave or pulsed conditions.

Selection Notes

Select this component for designs requiring high power density and wide bandwidth in the HF/VHF spectrum. The device supports both single-ended and push-pull topologies due to its rugged construction. Consider the specific reference circuit impedance data provided for the target operating frequency to optimize matching network design and ensure stable performance under varying load conditions.

Part Context

This device belongs to NXP's high-power LDMOS portfolio, engineered for robustness in demanding RF environments. It complements other wideband transistors by offering consistent performance across multiple sub-GHz bands. The inclusion of a product longevity program ensures long-term availability for industrial and communication infrastructure projects requiring sustained production cycles.

Replacement Considerations

The MRF300BN serves as a functional alternative with identical electrical characteristics but utilizes a mirror pinout arrangement. This variation facilitates direct implementation in push-pull amplifier architectures without modifying the PCB layout. Verify pin compatibility before substitution to ensure correct gate, source, and drain connections.

FAQ

What is the maximum load mismatch the device can withstand?

The device exhibits extreme ruggedness and can withstand load mismatches greater than 65:1 at all phase angles without degradation when operated under specified pulse conditions.

Does the device include electrostatic discharge protection?

Yes, the MRF300AN includes integrated ESD protection that passes the Human Body Model test at 2500 V and the Charge Device Model test at 1200 V.

What is the typical drain efficiency at 40.68 MHz?

In the 40.68 MHz reference circuit, the typical drain efficiency is 79.0% while delivering 330 W of output power with a power gain of 28.2 dB.