HSMP-481B-TR1G

RF Diode Overview

The HSMP-481B-TR1G is a surface mount RF PIN diode manufactured by Broadcom Limited, designed for low distortion attenuator applications. It features an ultra-low parasitic inductance structure within the SOT-323 (SC-70) package, making it suitable for microwave frequency operation significantly higher than conventional diodes. The device contains a dual cathode configuration with a minimum breakdown voltage of 100V and a maximum total capacitance of 0.4pF at 50V reverse bias. Its series resistance is specified as 3Ω at 100mA forward current.

RF Diode Feature Summary

• Optimized for low distortion attenuating applications
• Ultra-low parasitic inductance design for high-frequency performance
• Surface mount construction in compact SOT-323 package

RF Diode Applications

• Low distortion attenuators
• Microwave frequency switching
• High frequency signal processing circuits

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific -TR1G suffix indicates tape and reel packaging containing 3000 devices per 7-inch reel. Ensure compliance with RoHS standards and check for any product change notifications regarding obsolescence before finalizing procurement plans.

RF Diode Selection Notes

Select this component when designing circuits requiring minimal parasitic inductance for frequencies between 500 MHz and 3 GHz. The dual cathode configuration allows for flexible circuit topologies compared to single diode variants. Evaluate thermal resistance constraints, noting the SOT-323 package has a thermal resistance of 150°C/W, which differs from the SOT-23 variant.

RF Diode Part Context

This part belongs to the HSMP-481x series of surface mount PIN diodes. It shares the same electrical characteristics as the HSMP-481B-BLK but differs in packaging format. The series is engineered specifically to overcome the inductance limitations of standard packages, enabling superior performance in high-speed RF attenuation and switching roles.

RF Diode Replacement Considerations

The HSMP-481B-BLK serves as a bulk-pack equivalent with identical electrical specifications. Other members of the HSMP-381x/481x family may be considered if package size or lead code configuration requirements differ, though inductance values vary between SOT-23 and SOT-323 footprints.