SMP1345-004LF

RF Diode Overview

The SMP1345-004LF is a plastic packaged, surface mountable silicon PIN diode from the Skyworks SMP1345 series. It is designed for high volume Low-Noise Block (LNB), Wireless Local Area Network (WLAN), and switch applications operating from 10 MHz to 6 GHz. The device features a short carrier lifetime of 100 ns typical and an I-region width of 10 μm nominal. Key electrical specifications include a reverse voltage rating of 50 V, power dissipation of 250 mW at 25 °C lead temperature, capacitance of 0.18 pF at 5 V reverse bias, and series resistance of 1.5 Ω at 10 mA forward current. It operates within a temperature range of -65 °C to +150 °C.

RF Diode Feature Summary

• Very low insertion loss of 0.4 dB
• Low capacitance of 0.15 pF
• Packages rated MSL1, 260 °C per JEDEC J-STD-020

RF Diode Applications

• High isolation LNBs
• Wireless LANs
• Wireless switches

RF Diode Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for official End-of-Life notifications prior to procurement. Ensure handling procedures strictly follow industry-standard electrostatic discharge precautions during storage and assembly.

RF Diode Selection Notes

Select this component for designs requiring fast RF switching speeds and minimal signal attenuation in the microwave frequency range. Verify that the SOT-23 package dimensions align with the target PCB layout constraints. Ensure the circuit design accommodates the specified maximum reverse voltage and power dissipation limits under all expected operating conditions.

RF Diode Part Context

This part belongs to the SMP1345 series of very low capacitance, plastic packaged silicon PIN diodes manufactured by Skyworks Solutions Inc. The series includes variants such as the SMP1345-079LF and SMP1345-040LF, which differ primarily in package type and parasitic inductance characteristics while sharing similar core electrical performance metrics.

RF Diode Replacement Considerations

SMP1345-079LF

RF Diode FAQ

What is the typical carrier lifetime of the SMP1345-004LF?

The typical carrier lifetime is 100 ns.

What is the maximum reverse voltage rating for this diode?

The maximum reverse voltage rating is 50 V.

Is the SMP1345-004LF compliant with halogen-free legislation?

Yes, it is classified as a Skyworks Green product and is compliant with applicable legislation and is halogen-free.