HSMP-3890-TR1G

RF Diode Overview

The HSMP-3890-TR1G is a surface mount RF PIN switch diode from Broadcom Limited, housed in an SOT-23 package. It features a single diode configuration with a peak inverse voltage of 100 V and a series resistance of 2.5 Ω at 5 mA forward current. The total capacitance is 0.30 pF measured at 1 MHz with 5 V reverse bias. The device operates within a junction temperature range of -65°C to 150°C and has a thermal resistance of 500 °C/W. It is supplied in tape and reel packaging containing 3000 devices per 7-inch reel.

RF Diode Feature Summary

• Optimized for switching applications requiring low resistance at low current and low capacitance
• Unique configurations available in surface mount packages to save board space and reduce cost
• Matched diodes ensure consistent performance across units
• Lead-free construction compliant with environmental standards

RF Diode Applications

• RF switching circuits requiring low parasitic capacitance
• Attenuator designs utilizing series or shunt configurations
• Transmit/Receive switches in communication systems
• High isolation switch implementations

RF Diode Procurement Notes

Verify the part number suffix TR1G confirms the tape and reel quantity of 3000 devices on a 7-inch reel. Ensure the ordering code matches the specific package outline and marking requirements. Confirm lead finish is tin 100% and material is copper or alloy 42 as specified for the SOT-23 variant. Check for compliance with RoHS directives if required by your assembly process.

RF Diode Selection Notes

Select this component when a single diode configuration is sufficient for the circuit topology. Consider the 2.5 Ω series resistance and 0.30 pF capacitance values against the operating frequency and power levels. Verify that the SOT-23 package dimensions fit the PCB layout constraints. Evaluate the thermal resistance of 500 °C/W for heat dissipation needs in the specific application environment.

RF Diode Part Context

This component belongs to the HSMP-389x series of surface mount RF PIN switch diodes. The series offers various internal configurations including single, series, common anode, common cathode, and dual switch modes. The HSMP-3890 specifically denotes the single diode variant within this family, designed for general RF switching tasks where compact size and low parasitics are critical.

RF Diode Replacement Considerations

Direct substitutes include other HSMP-389x variants with different internal configurations such as HSMP-3892 (Series), HSMP-3893 (Common Anode), or HSMP-3894 (Common Cathode). Ensure the replacement matches the required pinout and electrical characteristics for the specific circuit design.

RF Diode FAQ

What is the maximum peak inverse voltage for the HSMP-3890?

The maximum peak inverse voltage is 100 V.

What is the typical total capacitance at 1 MHz?

The total capacitance is typically 0.30 pF when measured at 1 MHz with 5 V reverse bias.

Does the HSMP-3890 have a SPICE model available?

No, a SPICE model is not available because SPICE does not account for carrier lifetime, a key characteristic of PIN diodes.