P1200SCMC Equivalent & Substitute Parts

Part Overview

The P1200SCMC is a 100V off-state, 400A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, making identification of suitable alternatives necessary for ongoing design support and procurement continuity. The component functions as a transient voltage suppressor for circuit protection applications requiring high peak pulse current handling.

Substiute Parts

P1200SCMC

Littelfuse Inc.In Stock: 771P1200SCMC Datasheet

Current PartRFQ

P1200SCMCLRP

Littelfuse Inc.In Stock: 1083P1200SCMCLRP Datasheet

DirectRFQ

SMTPA100

STMicroelectronicsIn Stock: 2380SMTPA100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1200SCMC is determined by electrical and mechanical compatibility across the following critical parameters:

• Voltage - Off State: 100V (exact match required)
• Voltage - Breakover: 130V nominal range
• Package / Case: DO-214AA, SMB (mechanical compatibility)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Number of Elements: 1 (functional equivalence)

The P1200SCMC has two identified substitutes: P1200SCMCLRP (direct manufacturer equivalent with different packaging) and SMTPA100 (manufacturer-recommended alternative from STMicroelectronics). Both maintain the core voltage and package specifications, though peak pulse current ratings differ.

Parameter Comparison

Engineering Selection Recommendations

P1200SCMCLRP is the direct functional equivalent to P1200SCMC, maintaining identical electrical specifications (400A peak pulse current, 100V off-state voltage, 130V breakover voltage, 120mA hold current, 65pF capacitance) while offering active product status and ROHS3 compliance. This part is the primary substitute for applications requiring exact electrical performance matching.

SMTPA100 is a manufacturer-recommended alternative that meets the core voltage requirements (100V off-state, 133V breakover) and package compatibility (DO-214AA, SMB) but operates at reduced peak pulse current ratings (150A at 8/20µs, 50A at 10/1000µs) compared to the original specification. This part is suitable only for applications where the lower current rating is acceptable within circuit design margins. SMTPA100 also provides ROHS3 compliance and active product status.

Both substitutes are available in active product status with modern compliance certifications, addressing the obsolescence of the original P1200SCMC.

Frequently Asked Questions (FAQ)

Q: Can P1200SCMCLRP be used as a direct replacement for P1200SCMC?

A: Yes. P1200SCMCLRP maintains identical electrical specifications and package configuration. The only difference is packaging format (Tape & Reel versus bulk), which does not affect component performance or PCB assembly compatibility.

Q: What are the limitations of using SMTPA100 as a substitute?

A: SMTPA100 has reduced peak pulse current ratings: 150A (8/20µs) versus 400A for the original, and 50A (10/1000µs) versus 100A. Applications must verify that circuit transient conditions remain within these lower thresholds. Capacitance is also lower (35pF versus 65pF), which may affect circuit response characteristics.

Q: Are both substitutes RoHS compliant?

A: Yes. Both P1200SCMCLRP and SMTPA100 are ROHS3 compliant, whereas the original P1200SCMC is RoHS non-compliant. This compliance improvement may be required for new designs or procurement policies.

Q: Do the substitutes fit the same PCB footprint?

A: Yes. Both P1200SCMCLRP and SMTPA100 use the DO-214AA (SMB) package with surface mount configuration, ensuring mechanical and footprint compatibility with designs originally specified for P1200SCMC.

Q: What is the difference between the packaging options?

A: P1200SCMC is supplied in bulk packaging, P1200SCMCLRP in Tape & Reel (TR), and SMTPA100 in Cut Tape (CT) and Digi-Reel®. Packaging format affects procurement quantities and automated assembly processes but does not impact electrical performance or component functionality.