P3500SCMC Equivalent & Substitute Parts

Part Overview

The P3500SCMC is a 320V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is packaged in DO-214AA (SMB) surface mount configuration and is designed for transient voltage suppression applications. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

P3500SCMC

Littelfuse Inc.In Stock: 20343P3500SCMC Datasheet

Current PartRFQ

P3500SCMCLRP

Littelfuse Inc.In Stock: 2242P3500SCMCLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3500SCMC is determined by electrical and mechanical parameter equivalence. The substitute part P3500SCMCLRP maintains identical electrical specifications across all critical parameters: breakover voltage (400V), off-state voltage (320V), on-state voltage (5V), peak pulse currents (400A at 8/20µs and 100A at 10/1000µs), hold current (150mA), and capacitance (40pF). Both parts share the same package configuration (DO-214AA, SMB) and mounting type (surface mount), ensuring mechanical and thermal compatibility. The primary distinction between these parts is packaging format and product status, not electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The P3500SCMCLRP is the direct active equivalent for the obsolete P3500SCMC. Both parts are electrically and mechanically identical across all specified parameters. The P3500SCMCLRP offers the additional advantage of ROHS3 compliance, whereas the P3500SCMC is RoHS non-compliant. For new designs or ongoing production requiring compliance with current environmental regulations, the P3500SCMCLRP is the appropriate selection. The P3500SCMCLRP is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes, whereas the P3500SCMC was supplied in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can P3500SCMCLRP be used as a direct replacement for P3500SCMC? A: Yes. Both parts are electrically and mechanically identical. All voltage ratings, current specifications, capacitance, and package configurations match exactly. The primary differences are product status (active vs. obsolete) and RoHS compliance.

Q: What is the difference between the two part numbers? A: The P3500SCMCLRP includes the suffix "LRP," which designates Tape & Reel (TR) packaging and ROHS3 compliance. The P3500SCMC was supplied in bulk packaging and is RoHS non-compliant. Electrical performance is identical.

Q: Are there any thermal or reliability differences between these parts? A: No. Both parts share identical electrical specifications, including on-state voltage (5V), hold current (150mA), and capacitance (40pF). Thermal and reliability characteristics are equivalent.

Q: Is the DO-214AA package compatible with existing PCB layouts designed for P3500SCMC? A: Yes. Both parts use the DO-214AA (SMB) surface mount package. PCB footprints, thermal characteristics, and mounting requirements are identical.

Q: What is the significance of ROHS3 compliance on P3500SCMCLRP? A: ROHS3 compliance indicates the part meets current environmental and hazardous substance restrictions. For applications subject to regulatory requirements or customer specifications mandating RoHS compliance, P3500SCMCLRP is the required selection.