HSMP-4890-TR1G

RF Diode Overview

The HSMP-4890-TR1G is a surface mount RF PIN switch diode from the HSMP-489x series, manufactured by Broadcom Limited. It features an ultra-low parasitic inductance design optimized for high-frequency applications ranging from 500 MHz to 3 GHz. The device utilizes a Dual Anode configuration within an SOT-23 package. Key electrical specifications include a Peak Inverse Voltage (VBR) of 100 V, a maximum Series Resistance (RS) of 2.5 Ohms, and a Total Capacitance (CT) of 0.375 pF. The component supports a forward current of 1 A and operates within a junction temperature range of -65°C to +150°C.

RF Diode Feature Summary

• Ultra-low parasitic inductance architecture designed for frequencies significantly higher than conventional PIN diodes
• Dual Anode configuration providing flexibility for specific switching circuit topologies
• Lead-free construction compliant with environmental standards

RF Diode Applications

• High frequency transmit/receive switches
• Low inductance shunt mounted switches
• Microstrip series connection circuits

RF Diode Procurement Notes

Verify the exact ordering suffix against official documentation to ensure correct packaging quantity and tape-and-reel specifications. Confirm that the component meets all RoHS requirements relevant to your manufacturing region. Check for any specific handling precautions regarding static discharge during assembly processes.

RF Diode Selection Notes

Select this component when circuit designs require minimal parasitic inductance at frequencies exceeding 500 MHz. The dual anode structure allows for versatile biasing configurations compared to single diode options. Ensure the PCB layout accommodates the specific microstrip or coplanar waveguide requirements detailed in the datasheet to maximize performance.

RF Diode Part Context

This part belongs to the HSMP-489x series, which distinguishes itself from the HSMP-389x series through its specialized low-inductance package design. While the 389x series focuses on general low capacitance and resistance, the 489x series targets applications where lead inductance would otherwise limit high-frequency efficiency.

RF Diode Replacement Considerations

Direct substitutes within the same series include HSMP-489B, HSMP-489C, HSMP-489E, and HSMP-489F. These alternatives share the low-inductance package but differ in internal diode configuration, such as Single, Series, Common Anode, or Common Cathode arrangements.