NP3100SCMCT3G Equivalent & Substitute Parts

Part Overview

The NP3100SCMCT3G is a 275V off-state, 400A peak pulse (8/20µs) thyristor-based transient voltage suppressor manufactured by onsemi in DO-214AA (SMB) surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The NP3100SCMCT3G functions as a transient voltage suppressor for circuit protection applications requiring high current handling capability at 275V off-state voltage. Substitute parts must maintain electrical compatibility across voltage ratings, current specifications, and mechanical packaging to ensure functional equivalence in protection circuits.

Substiute Parts

NP3100SCMCT3G

onsemiIn Stock: 801NP3100SCMCT3G Datasheet

Current PartRFQ

P3100SCLRP

Littelfuse Inc.In Stock: 64451P3100SCLRP Datasheet

DirectRFQ

TB3100M-13-F

Diodes IncorporatedIn Stock: 15575TB3100M-13-F Datasheet

DirectRFQ

P3100SCMCLRP

Littelfuse Inc.In Stock: 8257P3100SCMCLRP Datasheet

SimilarRFQ

TISP4C350H3BJR-S

Bourns Inc.In Stock: 3696TISP4C350H3BJR-S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NP3100SCMCT3G are classified into two categories based on electrical parameter alignment:

Direct Substitutes maintain all critical electrical parameters within the same specification envelope:

• Voltage - Breakover: 350V
• Voltage - Off State: 275V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Package / Case: DO-214AA, SMB

Similar Substitutes maintain core voltage and hold current specifications but differ in peak pulse current ratings or on-state voltage, requiring application-level verification of current handling requirements.

Parameter Comparison

Engineering Selection Recommendations

P3100SCLRP (Littelfuse Inc.) is the primary direct substitute for NP3100SCMCT3G. This part maintains identical electrical specifications across all critical parameters: 350V breakover, 275V off-state, 400A peak pulse (8/20µs), and 100A peak pulse (10/1000µs). The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating. Packaging is DO-214AA, SMB in Tape & Reel format.

P3100SCMCLRP (Littelfuse Inc.) is a secondary direct substitute with identical current ratings and voltage specifications. On-state voltage is specified at 5V compared to 4V in the original part. This part is active in production with ROHS3 compliance and DO-214AA, SMB packaging.

TB3100M-13-F (Diodes Incorporated) is a similar substitute suitable for applications where peak pulse current requirements are 250A or lower. This part maintains 350V breakover and 275V off-state voltage with 150mA hold current. Peak pulse current (8/20µs) is rated at 250A, representing a 37.5% reduction from the original specification. This part is active in production with ROHS3 compliance.

TISP4C350H3BJR-S (Bourns Inc.) is a similar substitute for applications requiring 100A peak pulse current (10/1000µs). Peak pulse current (8/20µs) is not specified for this part. On-state voltage is 3V. This part is active in production with ROHS3 compliance and REACH affected status.

Frequently Asked Questions (FAQ)

Q: Can P3100SCLRP directly replace NP3100SCMCT3G without circuit modification?

A: Yes. P3100SCLRP maintains identical electrical specifications across voltage ratings, peak pulse currents, and hold current. Both parts use DO-214AA, SMB packaging with identical pinout and mounting footprint.

Q: What is the difference between P3100SCLRP and P3100SCMCLRP?

A: Both parts are Littelfuse SIDACtor® thyristors with identical current ratings and voltage specifications. The primary difference is on-state voltage: P3100SCLRP is specified at 4V while P3100SCMCLRP is specified at 5V. Both are suitable substitutes for the original part.

Q: Can TB3100M-13-F be used in place of NP3100SCMCT3G?

A: TB3100M-13-F is suitable only for applications where peak pulse current (8/20µs) does not exceed 250A. The original part is rated for 400A at this pulse duration. Application-level verification of actual transient current levels is required before substitution.

Q: Are all substitute parts RoHS compliant?

A: P3100SCLRP, P3100SCMCLRP, and TB3100M-13-F are ROHS3 compliant. TISP4C350H3BJR-S is ROHS3 compliant but carries REACH affected status, requiring compliance verification for specific end-use applications.

Q: What packaging formats are available for substitute parts?

A: P3100SCLRP and P3100SCMCLRP are supplied in Tape & Reel (TR) format. TB3100M-13-F is supplied in Tape & Reel (TR) format. TISP4C350H3BJR-S is supplied in Cut Tape (CT) & Digi-Reel® format. All parts use DO-214AA, SMB surface mount packaging.

Q: How do capacitance differences affect substitution?

A: Capacitance values range from 33pF (original) to 70pF (P3100SCLRP). Capacitance affects high-frequency transient response and circuit impedance. Application-level circuit simulation is recommended if capacitance variation exceeds design tolerances.