HSMP-3864-TR1G

RF Diode Overview

The HSMP-3864-TR1G is a surface mount PIN diode from the Broadcom HSMP-386x series, housed in an SOT-23 package. It features a common cathode configuration with two internal elements. Key electrical specifications include a breakdown voltage of 50 V, a typical total capacitance of 0.20 pF at 1 MHz and 50 V reverse bias, and a typical series resistance of 1.5 Ω at 100 MHz with 10 mA forward current. The device supports a maximum forward current of 1 A (1 µs pulse) and operates within a junction temperature range up to 150°C.

RF Diode Feature Summary

• Common cathode dual-element configuration for balanced switching performance
• Low total capacitance suitable for high-isolation RF applications
• Low series resistance optimized for low-distortion signal paths
• Lead-free construction compliant with environmental standards

RF Diode Applications

• Single-Pole Double-Throw (SPDT) RF switches
• High-isolation SPST switches
• Low distortion attenuator circuits
• VHF/UHF tuner band switching

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free marking codes on received inventory. Check for obsolescence notices as this series may have limited availability. Ensure storage conditions prevent moisture absorption prior to reflow soldering.

RF Diode Selection Notes

Select this part when a common cathode topology is required for differential or balanced switch designs. The 0.20 pF capacitance makes it suitable for frequencies where low insertion loss and high isolation are critical. Compare against the HSMP-386B for single-diode needs or HSMP-386E for common anode configurations if circuit polarity differs.

RF Diode Part Context

This component belongs to the HSMP-386x family of general-purpose surface mount PIN diodes manufactured by Broadcom Limited. The series offers various configurations including single, series, common anode, and common cathode options in SOT-23, SOT-323, and SOT-363 packages. The HSMP-3864 specifically provides the common cathode variant for versatile biasing schemes.

RF Diode Replacement Considerations

Direct functional substitutes within the same series include HSMP-386F (common cathode, SOT-323/SOT-23 equivalent pinout depending on specific sub-series revision) and HSMP-386E (common anode). For single-diode replacements, consider HSMP-386B. Verify package footprint compatibility when substituting between SOT-23 and SOT-323 variants.