SMP1322-040LF

RF Diode Overview

The SMP1322-040LF is a single PIN diode from Skyworks Solutions Inc., housed in an SOD-882 surface-mount package. It features a maximum reverse voltage of 50 V and a power dissipation rating of 430 mW at 25 °C lead temperature. Electrical specifications include a maximum capacitance of 1 pF at 30 V reverse bias and 1 MHz frequency, with a forward voltage of 0.85 V at 10 mA. Series resistance is specified as 1.5 Ω maximum at 1 mA and 100 MHz, or 0.5 Ω typical at 10 mA and 100 MHz. The device operates within a temperature range of -65 °C to +150 °C.

RF Diode Feature Summary

• Ultra-low series resistance optimized for low-loss switching in battery-operated circuits
• Miniature SOD-882 footprint designed for high-volume surface mount applications
• Moisture Sensitivity Level 1 (MSL1) rated for standard reflow soldering processes

RF Diode Applications

• High-performance wireless switch applications
• Low-loss PIN diode switches in battery operated circuits
• RF switching circuits operating from 10 MHz to more than 10 GHz

RF Diode Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm the exact package type and marking code. Confirm RoHS compliance status via the manufacturer's Certificate of Conformance prior to integration. Ensure ESD handling precautions are strictly followed during storage and assembly to prevent damage to the semiconductor junction.

RF Diode Selection Notes

Select this component when a miniature SOD-882 package is required for RF switching applications. The device is suitable for designs needing a 50 V reverse voltage rating and ultra-low on-state resistance. Verify that the 0.45 nH parasitic inductance aligns with the target frequency response requirements of the circuit design.

RF Diode Part Context

This part belongs to the SMP1322 series of plastic packaged, surface mountable PIN diodes. The series includes variants such as SMP1322-001LF (SOT-23), SMP1322-079LF (SC-79), and SMP1322-075LF (SC-70). All members share similar electrical characteristics but differ in physical package dimensions and parasitic inductance values.

RF Diode Replacement Considerations

Direct substitutes within the same series include SMP1322-001LF, SMP1322-075LF, and SMP1322-079LF. These alternatives offer identical electrical performance but utilize different packages (SOT-23, SC-70, SC-79). Verify footprint compatibility before substitution.