UM7310SM

RF Diode Overview

The UM7310SM is a switching and attenuator PIN diode from the UM7300 series, manufactured by Microchip Technology (formerly Microsemi). It features an extremely thick intrinsic region designed for low distortion linear attenuation and RF switching applications. The device operates effectively from frequencies below 500 kHz to beyond 1 GHz. Key electrical characteristics include a maximum reverse voltage of 1000 V at 10 uA leakage current, a maximum capacitance of 0.7 pF at 100 V reverse bias and 1 MHz frequency, and a minimum carrier lifetime of 4.0 us. In the SM surface mount package, it supports a power dissipation of 5.5 W with a thermal resistance of 18 °C/W.

RF Diode Feature Summary

• Extremely low distortion performance suitable for linear attenuators
• Low capacitance design enabling high-frequency operation
• High voltage rating capability up to 1000V
• Surface mount packaging compatible with pick and place processes

RF Diode Applications

• RF Switching
• Linear RF Attenuators
• Specialized microwave functions requiring low distortion

RF Diode Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm RoHS compliance status. Standard versions may differ from RoHS-compliant variants, which typically utilize a UMX prefix. Confirm package style and thermal specifications match the intended application requirements before procurement.

RF Diode Selection Notes

Select this component when low distortion and high voltage blocking are required in RF circuits operating below 1 GHz. The UM7300 series offers lower capacitance compared to the UM4300 series, making it suitable for higher frequency sensitivity. Ensure the thermal management strategy accommodates the specified power dissipation limits for the chosen package style.

RF Diode Part Context

This part belongs to the UM7300 series of switching and attenuator PIN diodes produced by Microchip Technology's Microwave Products division. The series combines a diode chip with a low thermal resistance construction. The UM7300 variant specifically emphasizes lower capacitance characteristics compared to the UM4300 series, targeting applications where signal integrity at higher frequencies within the HF to 1 GHz range is critical.

RF Diode Replacement Considerations

RoHS-compliant equivalents are available under the UMX7300 series designation. Verify that substitute components maintain the same 1000V reverse voltage rating and 0.7 pF maximum capacitance to ensure circuit compatibility.