SMPA1304-019LF

RF Diode Overview

The SMPA1304-019LF is a plastic packaged, surface mountable silicon PIN diode designed for low distortion attenuator applications from 10 MHz to beyond 1 GHz. It features three PIN diode junctions configured for PI attenuators in an SOT-143 package. Key electrical specifications include a maximum reverse voltage of 200 V and power dissipation of 250 mW at 25 °C lead temperature. The device exhibits a typical capacitance of 0.45 pF at 1 MHz and 30 V reverse bias. Series resistance values are specified as 40 Ω max at 1 mA, 7 Ω max at 10 mA, and 2 Ω max at 100 mA, all measured at 100 MHz.

RF Diode Feature Summary

• AEC-Q101 qualified for automotive reliability
• Designed for low distortion PI attenuator circuits
• Wide frequency range covering 10 MHz to >1 GHz
• Low capacitance structure for high-frequency performance

RF Diode Applications

• In-vehicle infotainment systems
• Automotive navigation units
• Telematics control modules
• Garage door openers
• Wireless control systems

RF Diode Procurement Notes

Verify component authenticity through authorized Skyworks Solutions Inc. distributors or direct channels. Confirm the specific ordering suffix matches the required packaging format, such as tape and reel quantities. Ensure compliance with RoHS and halogen-free standards as indicated by the LF designation. Check for moisture sensitivity level (MSL1) handling requirements during storage and soldering processes to prevent damage.

RF Diode Selection Notes

Select this component when designing PI attenuators requiring low distortion and wide dynamic resistance ranges. The 100 μm I-region width supports low capacitance and extended carrier lifetime. Verify that the operating temperature range of -65 °C to +150 °C meets environmental constraints. Consider the SOT-143 package dimensions for PCB layout compatibility and thermal management needs.

RF Diode Part Context

This part belongs to the SMPA1304 series of low distortion attenuator PIN diodes manufactured by Skyworks Solutions Inc. The series includes variants optimized for different attenuation configurations and packaging styles. The SMPA1304-019LF specifically targets automotive infotainment and telematics applications where signal integrity and reliability under varying temperatures are critical.

RF Diode Replacement Considerations

Direct substitutes within the same family include the SMPA1304-019, which shares identical electrical characteristics but may differ in packaging or qualification status. Verify pinout compatibility and package dimensions before substitution. Cross-referencing with other manufacturers requires careful evaluation of capacitance, resistance, and breakdown voltage parameters.