SMP1302-079LF

RF Diode Overview

The SMP1302-079LF is a single silicon PIN diode from the Skyworks SMP1302 series, housed in an SC-79 (SOD-523) surface-mount package. It features a nominal 50 μm I-region width and supports operation from 10 MHz to beyond 10 GHz. Key electrical specifications include a maximum reverse voltage of 200 V, power dissipation of 250 mW, and capacitance of 0.3 pF at 30 V reverse bias. Series resistance values are 15 Ω at 1 mA, 3 Ω at 10 mA, and 1.5 Ω at 100 mA, all measured at 100 MHz.

RF Diode Feature Summary

• Low-distortion design optimized for TEE attenuator configurations
• Suitable for large-signal switching applications due to low drive current requirements
• Plastic-packaged component rated for MSL1 moisture sensitivity

RF Diode Applications

• TV distribution systems
• Cellular base stations
• High-volume RF switch circuits
• Attenuator modules

RF Diode Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm package type and marking codes. Confirm RoHS compliance status via the manufacturer's Certificate of Conformance prior to procurement. Ensure ESD handling precautions are strictly followed during storage and assembly to prevent device degradation.

RF Diode Selection Notes

Select this component when a single-diode configuration with a 200 V reverse voltage rating is required. The SC-79 package provides a compact footprint suitable for space-constrained designs. Evaluate the 0.3 pF capacitance and resistance characteristics against system frequency and insertion loss requirements.

RF Diode Part Context

This part belongs to the SMP1302 series, which includes dual and quad variants in packages such as SOT-23, SOD-323, SC-88, and SOD-882. The SMP1302-079LF specifically denotes the single-diode version in the SC-79 package with a cathode marking code of C3.

RF Diode Replacement Considerations

Direct replacements within the same series include SMP1302-003LF (SOT-23), SMP1302-040LF (SOD-323), SMP1302-011LF (SC-88), and SMP1302-078LF (SC-88). Verify pinout compatibility and package dimensions before substitution.

RF Diode FAQ

What is the nominal I-region width of the SMP1302-079LF?

The nominal I-region width is 50 μm.

At what test conditions is the 0.3 pF capacitance specified?

The capacitance is specified at a frequency of 1 MHz and a reverse voltage of 30 V.

Is the SMP1302-079LF suitable for lead-free soldering?

Yes, the component is rated for lead-free soldering and meets Moisture Sensitivity Level 1 (MSL1) at 260 °C.