UMIL3

Overview

The UMIL3 is a common emitter broadband transistor designed for the 225-400 MHz frequency band. It supports Class AB and Class C operation with a power rating of 3 Watts at 28 Volts. The device utilizes gold metallization and silicon diffused resistors to ensure ruggedness and high reliability in demanding RF applications.

Feature Summary

• Broadband capability within the 225-400 MHz range
• Supports Class AB and Class C operation modes
• Gold metallization for enhanced ruggedness
• Silicon diffused resistors integrated for reliability

Applications

• Defcom communication systems
• UHF communications equipment
• RF amplifier stages

Procurement Notes

Verify the manufacturer origin, as Microsemi Corporation and Advanced Power Technology both list this part number. Confirm the specific datasheet version matches the required electrical characteristics for your design. Ensure the package type and pinout align with your PCB layout requirements before finalizing procurement.

Selection Notes

Select the UMIL3 when a compact, reliable solution is needed for VHF/UHF amplification. Its broadband nature simplifies tuning across the 225-400 MHz spectrum. Consider its power handling capabilities relative to your thermal management strategy. Verify compatibility with your system's impedance matching network for optimal performance.

Part Context

This component belongs to a family of broadband transistors intended for military and commercial radio applications. Similar parts in the series include higher power variants like the UMIL10 and UMIL25, offering scalability for different output power requirements while maintaining similar operational principles and frequency coverage.

Replacement Considerations

Direct substitutes may include other 3W broadband transistors from manufacturers like GHz Technology or Advanced Power Technology. Verify that any replacement maintains the same frequency range, power rating, and package dimensions to ensure mechanical and electrical compatibility.