SMP1321-040LF

RF Diode Overview

The SMP1321-040LF is a single PIN diode from Skyworks Solutions, packaged in the SOD-882 surface-mount format. It operates within a frequency range of 10 MHz to over 10 GHz and supports an operating temperature range of -65 °C to +150 °C. Key electrical specifications include a maximum reverse voltage of 100 V, a typical capacitance of 0.18 pF at 30 V (maximum 0.25 pF), and a series resistance of 1.05 Ω typical at 10 mA (maximum 2.00 Ω). The device features a carrier lifetime of 0.4 μs, a forward voltage of 0.85 V at 10 mA, and a power dissipation rating of 400 mW.

RF Diode Feature Summary

• Designed for high-performance wireless switch applications requiring low capacitance and low resistance.
• Suitable for high isolation, series-connected PIN diode switches in battery-operated circuits.
• Rated for Moisture Sensitivity Level 1 (MSL1) at 260 °C per JEDEC J-STD-020.

RF Diode Applications

• High-performance wireless switches
• Series-connected PIN diode switches
• Battery-operated RF circuits

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and lead-free status via official documentation. Check current production lifecycle status as discontinuation notices may apply. Ensure proper ESD handling precautions are followed during storage and assembly to prevent damage.

RF Diode Selection Notes

Select this component for designs requiring low parasitic inductance (0.45 nH) and minimal capacitance in the SOD-882 footprint. Evaluate thermal management requirements against the 400 mW power dissipation limit. Consider the specific series resistance characteristics at intended bias currents for optimal switch performance.

RF Diode Part Context

This part belongs to the SMP1321 series of low capacitance, plastic packaged PIN diodes. The series offers various configurations including pairs and singles in packages such as SC-79, SOT-23, and SOD-323. The SMP1321-040LF specifically denotes the single configuration in the miniature SOD-882 package with a marking code of 'C'.

RF Diode Replacement Considerations

Direct substitutes within the same series include SMP1321-005LF (SOT-23), SMP1321-079LF (SC-79), and SMP1321-011LF (SOD-323). Verify pinout compatibility and package dimensions when replacing with other series members.

RF Diode FAQ

What is the typical capacitance value of the SMP1321-040LF?

The typical capacitance is 0.18 pF at 30 V reverse bias, with a maximum specified value of 0.25 pF.

What is the series resistance at 10 mA forward current?

The series resistance is typically 1.05 Ω at 10 mA and 100 MHz, with a maximum limit of 2.00 Ω.

Is the SMP1321-040LF suitable for high-temperature environments?

Yes, the device is rated for an operating temperature range from -65 °C to +150 °C.