MS2553C

Overview

The MS2553C is a bipolar RF NPN transistor manufactured by Microsemi Corporation, housed in an M220 chassis mount package. It operates within the frequency range of 1.025 GHz to 1.15 GHz. The device supports a maximum collector-emitter voltage of 25V and a continuous collector current of 4A. Key power specifications include a pulsed output power capability of 175W and a typical average power rating of 35W. Designed for avionics applications, it features robust construction suitable for high-frequency radio frequency amplification tasks.

Feature Summary

• High-power RF amplification capability with 175W pulsed output
• Optimized for avionics systems operating in the 1.025–1.15 GHz band
• Chassis mount M220 package for efficient thermal management

Applications

• Avionics communication systems
• RF power amplification modules
• Military radar transmitters

Procurement Notes

Verify the manufacturer origin carefully, as Microsemi was acquired by Microchip Technology. Confirm that the specific unit matches the original Microsemi part number MS2553C rather than a generic equivalent. Check datasheet revisions to ensure compatibility with existing avionics designs. Ensure the M220 package dimensions align with your chassis requirements before procurement.

Selection Notes

Select this component when designing avionics equipment requiring high pulsed power at UHF frequencies. The M220 package is essential for applications needing direct chassis mounting for heat dissipation. Consider the 25V limit and 4A current rating against your circuit load. This transistor is suitable for specialized military or aerospace RF chains where reliability and specific frequency performance are critical.

Part Context

The MS2553C belongs to the family of discrete bipolar RF transistors produced by Microsemi. These components are engineered for demanding environments, specifically targeting the avionics sector. The M220 form factor distinguishes it from smaller surface-mount alternatives, providing the necessary thermal mass for high-power operations in ruggedized electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Microchip official resources for cross-reference data.