Littelfuse P3100EAAP Equivalent & Substitute Parts

Part Overview

The Littelfuse P3100EAAP is a 275V off-state, 150A peak pulse TVS thyristor in the SIDACtor® series, housed in a TO-226-2/TO-92-2 package with formed leads. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations. The part functions as a transient voltage suppressor for overvoltage protection applications requiring high peak pulse current handling.

Substiute Parts

P3100EAAP

LittelfuseIn Stock: 692P3100EAAP Datasheet

Current PartRFQ

P3100EALAP

LittelfuseIn Stock: 630P3100EALAP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3100EAAP is determined by electrical and mechanical parameter equivalence within the TVS thyristor category. The critical parameters governing substitutability are:

• Voltage - Breakover: 350V
• Voltage - Off State: 275V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 150A
• Current - Peak Pulse (10/1000µs): 45A
• Current - Hold (Ih): 150mA
• Capacitance: 35pF
• Package / Case: TO-226-2, TO-92-2 (TO-226AC) with formed leads
• Mounting Type: Through Hole

The P3100EALAP meets all electrical specifications and mechanical requirements, differing only in packaging format and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The P3100EALAP is the direct substitute for the obsolete P3100EAAP. Both components share identical electrical characteristics and mechanical specifications. The primary distinction is product status: the P3100EALAP is active and available, whereas the P3100EAAP is obsolete.

The P3100EALAP offers improved regulatory compliance, meeting ROHS3 requirements compared to the non-compliant status of the original part. The substitute is supplied in Tape & Box packaging format, suitable for automated assembly processes. Current inventory of the P3100EALAP supports immediate procurement for replacement applications.

Frequently Asked Questions (FAQ)

Q: Are the P3100EAAP and P3100EALAP electrically identical?

A: Yes. Both components share identical voltage ratings (350V breakover, 275V off-state, 4V on-state), peak pulse current specifications (150A at 8/20µs, 45A at 10/1000µs), hold current (150mA), and capacitance (35pF).

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

A: The P3100EALAP is the active production equivalent of the obsolete P3100EAAP. The substitute offers ROHS3 compliance and is supplied in Tape & Box packaging. Electrical performance and mechanical form factor remain unchanged.

Q: Can the P3100EALAP be used as a direct replacement in existing designs?

A: Yes. The P3100EALAP maintains the same TO-226-2/TO-92-2 package with formed leads and through-hole mounting, enabling direct substitution in PCB layouts designed for the P3100EAAP.

Q: What packaging formats are available for the substitute?

A: The P3100EALAP is supplied in Tape & Box (TB) format, optimized for high-volume automated assembly operations.

Q: Are there any compliance differences between the two parts?

A: The P3100EALAP meets ROHS3 compliance requirements, whereas the P3100EAAP is RoHS non-compliant. Both components are classified as EAR99 for export control purposes.