UM4006B

RF Diode Overview

The UM4006B is a high-power PIN diode from the UM4000 series, designed for HF through S-band applications. It features long carrier lifetimes and thick I-regions to enable control of high RF levels with low bias current. The device handles peak RF voltages exceeding its reverse bias rating. Key electrical parameters include a reverse voltage rating of 600 V at 10 uA, a typical series resistance of 0.5 Ohms at 100 MHz, and a capacitance of 3 pF at 100 V reverse bias. Power dissipation reaches 25 W at a 25°C stud temperature.

RF Diode Feature Summary

• High power handling capability with long carrier lifetime and thick I-region structure
• Capable of controlling high RF levels using relatively low bias current
• Handles peak RF voltages significantly in excess of applied reverse bias voltage
• Compatible with automatic insertion equipment

RF Diode Applications

• Low distortion switches and attenuators in HF through S band frequencies
• High power UHF phase shifters and megawatt peak-power duplexers
• Antenna selectors and couplers involving filter or cavity network switching

RF Diode Procurement Notes

Verify the specific package style (e.g., Stud or Surface Mount) required for the application, as the UM4000 series offers multiple mechanical configurations. Confirm RoHS compliance requirements; standard finishes are Sn/Pb, while compliant versions utilize the UMX prefix with a matte tin finish. Consult the manufacturer's website for the most current data sheets and ordering information before finalizing procurement.

RF Diode Selection Notes

Select the UM4006B when a 600 V reverse voltage rating is necessary for HF to S-band operations. Consider the UM4900 series if higher power ratings are needed due to shorter thermal paths. Evaluate the required package style against available mounting options such as isolated stud or surface mount configurations. Ensure the design accounts for the device's compatibility with automatic insertion equipment if automated assembly is planned.

RF Diode Part Context

The UM4006B belongs to the UM4000/UM4900 family of high-power PIN diodes manufactured by Microsemi. This series is distinguished by long carrier lifetimes and thick I-regions, optimizing performance for high RF level control. While electrically equivalent to the UM4900 series, the UM4000 variants typically feature different thermal characteristics and packaging styles suited for various high-power microwave applications.

RF Diode Replacement Considerations

The UM4906 is an electrically equivalent alternative within the same product family. For RoHS compliant replacements, consider the UMX4006 variant which utilizes a matte tin finish.