UM4010CR

RF Diode Overview

The UM4010CR is a high-power silicon PIN diode from the UM4000 series, designed for HF through S-band applications. It features a hermetic stud package (Style CR) with a standard Sn/Pb finish. Key electrical parameters include a reverse voltage rating of 1000 V at 10 uA, a maximum power dissipation of 25 W at 25°C stud temperature, and a typical series resistance of 0.5 Ω at 100 mA forward current. The device exhibits a carrier lifetime greater than 5 µs and low capacitance of 3 pF at 100 V reverse bias.

RF Diode Feature Summary

• High charge storage and long carrier lifetime enable control of high RF levels with relatively low bias current.
• Peak RF voltages can be handled well in excess of applied reverse bias voltage.
• Non-cavity design suitable for automated insertion equipment.
• Isolated stud package configuration.

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 where inductance and capacitance elements are switched in filter or cavity networks.

RF Diode Procurement Notes

Verify RoHS compliance status before procurement, as the UM4000 series typically utilizes a Sn/Pb finish. The UM4010CR part number indicates a non-compliant variant; use the UMX prefix for RoHS compliant versions. Confirm specific package style requirements and thermal mounting conditions to ensure proper power dissipation ratings are met during integration.

RF Diode Selection Notes

Select the UM4010CR for applications requiring high reverse voltage ratings up to 1000 V and significant power handling capabilities. Consider the UM4900 series if higher power ratings are needed due to shorter thermal paths. Ensure the system operates within the specified frequency range of HF through S band and accounts for the long carrier lifetime characteristics in switching speed requirements.

RF Diode Part Context

The UM4010CR belongs to the UM4000 series of high power PIN diodes manufactured by Microchip Technology (formerly Microsemi). This series is characterized by thick I-regions and long carrier lifetimes. The UM4000 series is electrically equivalent to the UM4900 series but generally offers lower power ratings due to differences in the thermal path between the chip and the package.

RF Diode Replacement Considerations

For RoHS compliant replacements, consider the UMX4010CR variant which meets EU Directive 2002/95/EC requirements. The UM4900 series offers similar electrical performance with higher power ratings due to improved thermal management.