SMP1304-079LF

RF Diode Overview

The SMP1304-079LF is a plastic packaged, surface mountable silicon PIN diode designed for attenuator applications from 5 MHz to beyond 2 GHz. It features a thick 100 μm intrinsic region and a typical carrier lifetime of 1 μs, resulting in low-distortion performance suitable for TV distribution and base station circuits. The device is housed in an SC-79 package with an inductance (LS) of 0.7 nH. Key electrical specifications include a maximum reverse voltage of 200 V, power dissipation of 250 mW at 25 °C lead temperature, and capacitance of 0.3 pF at 1 MHz. Resistance values range from 40 Ω at 1 mA to 2 Ω at 100 mA forward current.

RF Diode Feature Summary

• Low-distortion design utilizing a thick 100 μm I-region for PI and TEE attenuator configurations
• Frequency range extending from 5 MHz to beyond 2 GHz
• Designed specifically for TV distribution and base station applications
• Plastic packages rated MSL1 @ 260 °C per JEDEC J-STD-020

RF Diode Applications

• TV distribution systems
• PI attenuator circuits
• TEE attenuator circuits
• Base station RF front-end modules

RF Diode Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and marking code. The SMP1304 series includes multiple variants such as single diodes, pairs, and arrays; ensure the selected part matches the required circuit topology. Confirm RoHS compliance status via the Certificate of Conformance if required by procurement specifications.

RF Diode Selection Notes

Select the SMP1304-079LF when a single diode configuration in an SC-79 package is required for low-inductance applications. Consider alternative package options like SOT-23 or SOT-5 if higher pin counts or different form factors are needed for multi-diode attenuator topologies. Evaluate resistance versus temperature characteristics based on expected operating conditions and forward bias currents.

RF Diode Part Context

The SMP1304-079LF belongs to the SMP1304 Series of low-distortion attenuator PIN diodes manufactured by Skyworks Solutions, Inc. This series offers various packaging options including SC-79, SOT-23, and SOT-5 to accommodate different circuit designs. The component is part of Skyworks' portfolio of RF components optimized for signal attenuation and switching in communication infrastructure.

RF Diode Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Skyworks application notes or technical support for qualified alternatives that match the electrical specifications and package dimensions.