P3100ECMCAP Equivalent & Substitute Parts

Part Overview

The P3100ECMCAP is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse, classified under the SIDACtor® series. This component is designed for overvoltage protection applications requiring 275V off-state voltage suppression with 400A peak pulse current capability in a TO-226-2 package configuration. The P3100ECMCAP is currently listed as obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

P3100ECMCAP

LittelfuseIn Stock: 832P3100ECMCAP Datasheet

Current PartRFQ

P3100ECMCLAP

Littelfuse Inc.In Stock: 1131P3100ECMCLAP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P3100ECMCAP are identified based on electrical parameter equivalence and mechanical compatibility. The critical substitution criteria are:

• Voltage - Off State: 275V
• Voltage - Breakover: 350V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Capacitance: 45pF
• Package / Case: TO-226-2, TO-92-2 (TO-226AC)
• Mounting Type: Through Hole

Parts meeting all these electrical and mechanical specifications are classified as direct equivalents and can be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The P3100ECMCLAP is a direct electrical and mechanical equivalent to the P3100ECMCAP. Both parts share identical electrical specifications across all voltage and current parameters, capacitance, and package configuration. The primary distinction is product status and regulatory compliance.

The P3100ECMCAP is obsolete, whereas the P3100ECMCLAP maintains active product status with Littelfuse. The P3100ECMCLAP is ROHS3 compliant, meeting current environmental and regulatory requirements, while the P3100ECMCAP is RoHS non-compliant. For new designs and production applications, the P3100ECMCLAP is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part functions identically within the circuit.

Frequently Asked Questions (FAQ)

Q: Can P3100ECMCLAP be used as a direct replacement for P3100ECMCAP?

A: Yes. Both parts are electrically and mechanically identical. All voltage ratings, current specifications, capacitance, and package configurations match exactly. The P3100ECMCLAP is the active production equivalent.

Q: What is the difference between these two part numbers?

A: The P3100ECMCAP is obsolete, while P3100ECMCLAP is active. The P3100ECMCLAP is ROHS3 compliant; the P3100ECMCAP is not. Electrical performance is identical.

Q: Are there any package or mounting differences?

A: No. Both parts use TO-226-2, TO-92-2 (TO-226AC) package configuration with through-hole mounting. The P3100ECMCLAP is supplied in Tape & Box (TB) packaging.

Q: Which part should be specified for new designs?

A: The P3100ECMCLAP should be specified for new designs due to active product status and ROHS3 compliance.

Q: Are the electrical characteristics identical?

A: Yes. Off-state voltage, breakover voltage, on-state voltage, peak pulse currents, hold current, and capacitance are identical across both parts.