SMP1321-011LF

RF Diode Overview

The SMP1321-011LF is a single PIN diode from Skyworks Solutions, packaged in an SOD-323 plastic housing. It operates across frequencies from 10 MHz to over 10 GHz with a maximum reverse voltage of 100 V and power dissipation of 400 mW at 25 °C lead temperature. Electrical characteristics include a typical capacitance of 0.18 pF (max 0.25 pF) at 30 V reverse bias, and series resistance ranging from 1.05 Ω to 2.00 Ω at 10 mA forward current. The device supports an operating temperature range of -65 °C to +150 °C and features a carrier lifetime of 0.4 μs.

RF Diode Feature Summary

• Designed for high-performance wireless switch applications
• Low capacitance combined with low resistance for high isolation
• Suitable for battery-operated circuits

RF Diode Applications

• High volume switch applications
• Series-connected PIN diode switches
• Battery operated circuits

RF Diode Procurement Notes

Verify the component against the official Skyworks datasheet specifications before integration. Confirm that the SOD-323 package marking RM matches the required design. Ensure handling procedures adhere to industry-standard ESD precautions during storage and assembly to prevent damage.

RF Diode Selection Notes

Select this component when designing RF switches requiring operation beyond 10 GHz. The SOD-323 package provides a balance of low parasitic inductance and small footprint. Verify that the 100 V reverse voltage rating meets the circuit requirements and that the thermal dissipation limits are respected under expected load conditions.

RF Diode Part Context

This part belongs to the SMP1321 series of low capacitance, plastic packaged PIN diodes. The series includes various configurations such as pairs and singles in packages like SC-79, SOT-23, and SOD-882. The SMP1321-011LF specifically denotes the single configuration in the SOD-323 package.

RF Diode Replacement Considerations

Other parts within the SMP1321 series, such as SMP1321-005LF or SMP1321-079LF, offer different package footprints but share similar electrical characteristics. Verify pinout compatibility and physical dimensions before substituting.