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The UMX4001SM is a silicon PIN diode manufactured by Microchip Technology. It belongs to the UM4000 series, which features high power capabilities with long carrier lifetimes and thick I-regions. The device utilizes a hermetic MELF package and is designed for low distortion switching and attenuation applications in HF through S band frequencies. As indicated by the UMX prefix, this specific part number meets RoHS requirements per EU Directive 2002/95/EC, distinguishing it from the standard Sn/Pb finished UM4000 series.
Verify that the UMX prefix confirms RoHS compliance status as specified by the manufacturer. Confirm the hermetic MELF package type matches system requirements. Check for factory special order status and current availability directly with Microchip Technology or authorized distributors. Ensure the component meets all relevant environmental directives for the intended deployment region.
Select the UMX4001SM when high power PIN diode performance is required in HF to S band applications. Choose this variant over the standard UM4001SM if RoHS compliance is mandatory. Consider the hermetic MELF package for superior environmental protection compared to non-hermetic alternatives. Evaluate the long carrier lifetime benefits for systems requiring high RF level control with relatively low bias currents.
The UMX4001SM is part of the UM4000 series of high power PIN diodes produced by Microchip Technology. This series is characterized by thick I-regions and long carrier lifetimes, enabling high RF voltage handling. The UMX designation specifically denotes the RoHS-compliant version of the UM4000 series, which typically uses a Sn/Pb finish. These devices are electrically equivalent to the standard UM4000 series but adhere to stricter environmental regulations.
The UM4001SM serves as the non-RoHS compliant counterpart to the UMX4001SM. Both share identical electrical characteristics and physical form factors. Substitution requires verifying regulatory compliance needs rather than technical performance differences.