P1200SCRP Equivalent & Substitute Parts

Part Overview

The P1200SCRP 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 substitutes necessary for ongoing design support and procurement planning. The device provides transient voltage suppression with a 130V breakover voltage and 4V on-state voltage characteristic.

Substiute Parts

P1200SCRP

Littelfuse Inc.In Stock: 5282P1200SCRP Datasheet

Current PartRFQ

P1200SCLRP

Littelfuse Inc.In Stock: 10316P1200SCLRP Datasheet

DirectRFQ

SMTPA100

STMicroelectronicsIn Stock: 2380SMTPA100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS thyristors is determined by matching the following critical parameters: off-state voltage, breakover voltage, on-state voltage, peak pulse current ratings (both 8/20µs and 10/1000µs), hold current, package type, and capacitance. The P1200SCRP has two identified substitutes:

Direct Substitute (P1200SCLRP): Identical electrical specifications with matching voltage ratings, current ratings, and on-state characteristics. Differs only in packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete).

Manufacturer-Recommended Substitute (SMTPA100): Shares the same off-state voltage (100V), breakover voltage range (133V), package type (DO-214AA, SMB), and capacitance (35pF). Peak pulse current differs: 150A (8/20µs) and 50A (10/1000µs) versus the original 400A and 100A respectively. Hold current is 150mA versus 120mA.

Parameter Comparison

Engineering Selection Recommendations

P1200SCLRP is the direct functional equivalent of P1200SCRP with identical electrical performance. This part is currently active in production and carries ROHS3 compliance certification, addressing the regulatory gap of the obsolete original. Selection of P1200SCLRP is appropriate for applications requiring exact electrical parameter matching and is the preferred path for design continuity.

SMTPA100 is a manufacturer-recommended alternative from STMicroelectronics. This part maintains voltage compatibility (100V off-state, 133V breakover) and identical package form factor. However, peak pulse current ratings are reduced to 150A (8/20µs) and 50A (10/1000µs), with hold current increased to 150mA. This part is suitable only for applications where the lower current ratings are acceptable. SMTPA100 also carries ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can P1200SCLRP be used as a direct replacement for P1200SCRP? A: Yes. P1200SCLRP is electrically identical to P1200SCRP across all specified parameters: 100V off-state voltage, 130V breakover voltage, 400A peak pulse current (8/20µs), and 120mA hold current. The only differences are packaging format and product status. P1200SCLRP is the recommended substitute.

Q: What are the limitations of SMTPA100 as a substitute? A: SMTPA100 has reduced peak pulse current ratings: 150A (8/20µs) and 50A (10/1000µs) compared to P1200SCRP's 400A and 100A. Hold current is also higher at 150mA versus 120mA. Breakover voltage is slightly higher at 133V versus 130V. SMTPA100 is suitable only for applications where these reduced current ratings meet the design requirements.

Q: Are both substitutes available in the same package? A: Yes. Both P1200SCLRP and SMTPA100 use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with P1200SCRP footprints.

Q: What is the difference between P1200SCRP and P1200SCLRP packaging? A: P1200SCRP is supplied in bulk packaging, while P1200SCLRP is supplied in Tape & Reel (TR) format. Electrical specifications are identical.

Q: Do the substitute parts meet current RoHS requirements? A: Yes. Both P1200SCLRP and SMTPA100 are ROHS3 compliant, whereas P1200SCRP is non-compliant. This addresses regulatory requirements for new designs and procurement.