P1200SC Equivalent & Substitute Parts

Part Overview

The P1200SC is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc., designed for overvoltage protection in surface-mount applications. This component operates at 100V off-state voltage with a 400A peak pulse current rating and is housed in a DO-214AA (SMB) package. The P1200SC is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

P1200SC

Littelfuse Inc.In Stock: 30332P1200SC Datasheet

Current PartRFQ

P1200SCLRP

Littelfuse Inc.In Stock: 10316P1200SCLRP Datasheet

DirectRFQ

SMTPA100

STMicroelectronicsIn Stock: 2380SMTPA100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P1200SC are identified based on matching electrical and mechanical parameters within the TVS thyristor category. The primary substitution criteria are:

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

The P1200SC has two identified substitutes: P1200SCLRP (direct equivalent from Littelfuse Inc.) and SMTPA100 (manufacturer-recommended alternative from STMicroelectronics). Both maintain the core voltage and package specifications, though current ratings and hold current parameters vary.

Parameter Comparison

Engineering Selection Recommendations

P1200SCLRP is the direct functional equivalent to the P1200SC, manufactured by Littelfuse Inc. under the same SIDACtor® series. This part maintains identical electrical specifications including 400A peak pulse current (8/20µs), 100A peak pulse current (10/1000µs), and 120mA hold current. The P1200SCLRP is currently in active production status with ROHS3 compliance and REACH unaffected certification, making it suitable for new designs and legacy system replacements where Littelfuse components are specified.

SMTPA100 is a manufacturer-recommended alternative from STMicroelectronics. While it maintains the same 100V off-state voltage, DO-214AA package, and 35pF capacitance, it operates at reduced current ratings: 150A peak pulse (8/20µs) and 50A peak pulse (10/1000µs). The SMTPA100 is appropriate for applications where the lower current rating is sufficient and cross-manufacturer qualification is acceptable. This part is also ROHS3 compliant and REACH unaffected.

Selection between P1200SCLRP and SMTPA100 depends on circuit current requirements. Applications requiring the full 400A peak pulse capability must use P1200SCLRP. Applications with lower transient current demands may use SMTPA100.

Frequently Asked Questions (FAQ)

Q: Can P1200SCLRP be used as a direct replacement for P1200SC?

A: Yes. P1200SCLRP is a direct equivalent with identical electrical specifications and the same DO-214AA package. The primary difference is product status: P1200SC is obsolete while P1200SCLRP is active production, and P1200SCLRP includes ROHS3 compliance.

Q: What is the difference between P1200SCLRP and SMTPA100?

A: Both parts share the same 100V off-state voltage and DO-214AA package. The key difference is current rating: P1200SCLRP handles 400A peak pulse (8/20µs), while SMTPA100 is rated for 150A. SMTPA100 also has a higher hold current (150mA vs. 120mA). Selection depends on whether your circuit requires the higher current capability.

Q: Are all three parts mechanically compatible?

A: Yes. All three parts use the DO-214AA (SMB) surface-mount package and are designed for the same PCB footprint.

Q: What compliance certifications apply to substitute parts?

A: P1200SCLRP and SMTPA100 are both ROHS3 compliant and REACH unaffected. The original P1200SC is RoHS non-compliant, making the substitutes preferable for new designs subject to environmental regulations.

Q: Can SMTPA100 be used in all applications where P1200SC was used?

A: SMTPA100 can be used only in applications where the 150A peak pulse current rating is sufficient. Applications requiring the full 400A capability must use P1200SCLRP or equivalent.