P3100SCRP Equivalent & Substitute Parts

Part Overview

The P3100SCRP is a 275V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the DO-214AA (SMB) package. This component is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and procurement planning. The part operates as a transient voltage suppressor within the SIDACtor® series, designed for surface mount applications requiring high-current pulse handling capability.

Substiute Parts

P3100SCRP

Littelfuse Inc.In Stock: 35135P3100SCRP Datasheet

Current PartRFQ

P3100SCLRP

Littelfuse Inc.In Stock: 64451P3100SCLRP Datasheet

DirectRFQ

TISP4350T3BJR-S

Bourns Inc.In Stock: 6161TISP4350T3BJR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P3100SCRP is determined by the following critical parameters: voltage ratings (breakover and off-state), peak pulse current handling (8/20µs and 10/1000µs waveforms), hold current, package type, and mounting configuration. All substitute parts must maintain the same DO-214AA (SMB) surface mount package and support equivalent or superior current ratings to ensure functional compatibility in the target application.

The P3100SCRP has two identified substitutes: P3100SCLRP (direct Littelfuse equivalent with identical electrical specifications) and TISP4350T3BJR-S (Bourns alternative with reduced peak pulse current rating).

Parameter Comparison

Engineering Selection Recommendations

P3100SCLRP is the primary substitute for P3100SCRP. Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications across all critical parameters. P3100SCLRP maintains active product status and is ROHS3 compliant, addressing the obsolescence of the original part while preserving full electrical compatibility. This part is available in Tape & Reel packaging with higher inventory levels.

TISP4350T3BJR-S (Bourns Inc.) is a secondary alternative suitable only for applications where peak pulse current requirements do not exceed 250A (8/20µs) or 80A (10/1000µs). This part maintains identical voltage ratings and hold current specifications but delivers reduced current-handling capacity. TISP4350T3BJR-S is ROHS3 compliant and REACH affected. The lower capacitance (52pF versus 70pF) may affect transient response characteristics in specific circuit topologies.

Frequently Asked Questions (FAQ)

Q: Can P3100SCLRP be used as a direct replacement for P3100SCRP?

A: Yes. P3100SCLRP is electrically and mechanically identical to P3100SCRP across all specified parameters. Both parts feature 350V breakover voltage, 275V off-state voltage, 400A peak pulse current (8/20µs), and DO-214AA SMB packaging. P3100SCLRP is the recommended substitute due to active product status and ROHS3 compliance.

Q: What are the limitations of TISP4350T3BJR-S as a substitute?

A: TISP4350T3BJR-S has reduced peak pulse current ratings: 250A (8/20µs) versus 400A for the original part, and 80A (10/1000µs) versus 100A. Applications requiring the full 400A pulse handling capability cannot use this substitute. Capacitance is also lower at 52pF compared to 70pF, which may alter transient suppression response.

Q: Are all substitute parts available in the same package?

A: Yes. P3100SCLRP and TISP4350T3BJR-S are both supplied in DO-214AA (SMB) surface mount packages, maintaining mechanical compatibility with existing PCB layouts and assembly processes.

Q: What compliance differences exist between the original part and substitutes?

A: P3100SCRP is RoHS non-compliant. Both P3100SCLRP and TISP4350T3BJR-S are ROHS3 compliant. TISP4350T3BJR-S is additionally REACH affected, while P3100SCLRP is REACH unaffected.

Q: Which substitute should be selected for new designs?

A: P3100SCLRP is the preferred choice for new designs, offering identical electrical performance, active product status, and full regulatory compliance. TISP4350T3BJR-S should be considered only when application requirements permit reduced current ratings.