QSMP-381F-TR2G

RF Diode Overview

The QSMP-381F-TR2G is a PIN diode attenuator manufactured by Broadcom Limited, designed for radio frequency applications. It features a common cathode configuration housed in an SOT-323 surface-mount package. Key electrical specifications include a maximum reverse voltage of 50 V and a maximum diode capacitance of 350 fF. The device supports a forward current of 1 A and operates within a temperature range of -65 C to +150 C. It exhibits a carrier lifetime of 1.5 us and a recovery time of 300 ns. Series resistance varies between 3 Ohms and 53 Ohms depending on the frequency conditions.

RF Diode Feature Summary

• Utilizes silicon technology for RF signal attenuation
• Features a compact SOT-323 surface-mount package design
• Provides high thermal stability across extended operating temperatures

RF Diode Applications

• RF signal path control
• Variable attenuation circuits
• Switching applications in wireless systems

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to obsolescence status. Confirm RoHS compliance details via official documentation. Request updated lifecycle notifications as availability may be restricted. Validate datasheet revisions against specific production batches to ensure parameter consistency. Maintain supply chain records for traceability purposes.

RF Diode Selection Notes

Evaluate the 350 fF capacitance and 50 V reverse voltage limits against circuit requirements. Consider the 1 A forward current rating for power handling capabilities. Assess the 300 ns recovery time for switching speed needs. Ensure the SOT-323 footprint matches PCB layout constraints. Compare series resistance values with system impedance matching goals.

RF Diode Part Context

This component belongs to the HSMP-381 family of PIN diodes from Broadcom Limited. It serves as an RF attenuator element within semiconductor diode and rectifier categories. The part shares functional similarities with other models in the series but differs in packaging and specific electrical tolerances defined by its suffix.

RF Diode Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.