P3500ECMC Equivalent & Substitute Parts

Part Overview

The P3500ECMC is a 320V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring high current handling capability in a compact TO-226-2 package. The P3500ECMC is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

P3500ECMC

Littelfuse Inc.In Stock: 995P3500ECMC Datasheet

Current PartRFQ

P3500ECMCL

Littelfuse Inc.In Stock: 831P3500ECMCL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3500ECMC is determined by electrical and mechanical parameter equivalence. The following criteria establish direct substitutability:

• Voltage ratings: Breakover voltage (400V), off-state voltage (320V), and on-state voltage (4V) must be identical
• Current specifications: Peak pulse current (8/20µs and 10/1000µs) and hold current must match exactly
• Capacitance: 40pF specification must be maintained
• Package configuration: TO-226-2 / TO-92-2 through-hole mounting must be preserved
• Number of elements: Single-element configuration required

The P3500ECMCL meets all substitution criteria as a direct equivalent with identical electrical characteristics and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The P3500ECMCL is the direct substitute for the obsolete P3500ECMC. Both components are manufactured by Littelfuse Inc. within the SIDACtor® series and share identical electrical and mechanical specifications.

Key selection factors:

• The P3500ECMC is classified as obsolete with no further production planned
• The P3500ECMCL is an active product with current manufacturing status
• The P3500ECMCL is ROHS3 compliant, whereas the P3500ECMC is non-compliant
• Both components carry identical voltage, current, and package specifications
• The P3500ECMCL is available in bulk packaging with 816 units in stock

For new designs or ongoing procurement, the P3500ECMCL is the appropriate selection. For legacy systems currently using the P3500ECMC, direct substitution with the P3500ECMCL is electrically and mechanically compatible.

Frequently Asked Questions (FAQ)

Q: Can the P3500ECMCL directly replace the P3500ECMC in existing designs?

A: Yes. The P3500ECMCL is electrically and mechanically identical to the P3500ECMC. All voltage ratings, current specifications, capacitance, and package configurations match exactly. Direct substitution is possible without circuit modification.

Q: What is the primary reason for substitution?

A: The P3500ECMC is obsolete. The P3500ECMCL is the active equivalent manufactured by Littelfuse Inc. with identical specifications and current availability.

Q: Are there packaging differences between these parts?

A: Both components use the same TO-226-2 / TO-92-2 through-hole package. The P3500ECMC was supplied in standard packaging, while the P3500ECMCL is available in bulk packaging. The physical component dimensions and pin configuration are identical.

Q: What compliance differences exist?

A: The P3500ECMCL is ROHS3 compliant, while the P3500ECMC is non-compliant. For applications requiring RoHS compliance, the P3500ECMCL is the required selection.

Q: Are the electrical characteristics guaranteed to be identical?

A: Yes. Both parts share identical specifications for breakover voltage (400V), off-state voltage (320V), on-state voltage (4V), peak pulse current (400A at 8/20µs), hold current (150mA), and capacitance (40pF).

Q: What inventory status should influence procurement decisions?

A: The P3500ECMC has 917 units in stock but is obsolete with no future production. The P3500ECMCL has 816 units in stock and is actively manufactured. For long-term availability, the P3500ECMCL is the appropriate choice.