1214-55

Overview

The Microsemi Corporation 1214-55 is an NPN RF bipolar junction transistor designed for high-power radio frequency applications. It features a maximum collector-emitter breakdown voltage of 50V and supports a continuous collector current of 8A. The device operates within a transition frequency range of 1.2GHz to 1.4GHz, delivering a power gain of 7dB. With a maximum power dissipation capability of 175W, it is engineered for robust performance in demanding environments. The component utilizes a base-mount configuration housed in the 55AW package, ensuring effective thermal management and mechanical stability for industrial RF systems.

Feature Summary

• High-power RF amplification with 175W dissipation capacity
• Optimized for UHF frequency bands between 1.2GHz and 1.4GHz
• Robust construction using base-mount installation method

Applications

• UHF radio frequency power amplification stages
• Industrial RF heating and plasma generation systems
• Military communication transmitter modules

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of availability requires checking authorized distributors for remaining stock or surplus channels. Ensure strict adherence to handling guidelines for sensitive semiconductor devices during procurement and storage to maintain integrity.

Selection Notes

Engineers should evaluate the 50V breakdown voltage and 8A current limits against circuit requirements. The 55AW package dictates specific mounting and thermal interface solutions. Consider the transition frequency range when designing matching networks for target RF bands to ensure optimal signal integrity and efficiency.

Part Context

The 1214-55 belongs to the family of discrete RF transistors manufactured by Microsemi Corporation, now part of Microchip Technology. These components are specialized for high-frequency, high-power operations where standard logic or small-signal transistors cannot meet performance demands. The product line focuses on ruggedized semiconductor solutions for defense and industrial sectors.

Replacement Considerations

As the 1214-55 is marked obsolete, direct substitutes must be sourced from secondary markets. Verify pin compatibility and electrical parameters such as Vceo, Ic, and Ptot before integration. No official cross-reference part numbers are provided in public documentation.