P1500SC Equivalent & Substitute Parts

Part Overview

The P1500SC is a 140V off-state TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA (SMB) surface mount package. This component is designed for transient voltage suppression applications requiring 400A peak pulse current capability at 8/20µs pulse width. The P1500SC is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P1500SC

Littelfuse Inc.In Stock: 10450P1500SC Datasheet

Current PartRFQ

P1500SCLRP

Littelfuse Inc.In Stock: 1337P1500SCLRP Datasheet

DirectRFQ

SMP100LC-140

STMicroelectronicsIn Stock: 4249SMP100LC-140 Datasheet

MFR RecommendedRFQ

SMP100MC-140

STMicroelectronicsIn Stock: 2372SMP100MC-140 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1500SC is determined by electrical and mechanical parameter compatibility within the TVS thyristor category. The critical parameters governing substitution are:

• Voltage - Off State: 140V (exact match required)
• Voltage - Breakover: 175V–180V (acceptable range)
• Current - Peak Pulse (8/20µs): 300A–400A (acceptable range)
• Current - Hold (Ih): 150mA (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• Mounting Type: Surface Mount (exact match required)

Three substitute parts meet these criteria: P1500SCLRP (direct Littelfuse equivalent), SMP100LC-140 (STMicroelectronics TRISIL™ series), and SMP100MC-140 (STMicroelectronics TRISIL™ series with reduced peak pulse current).

Parameter Comparison

Engineering Selection Recommendations

P1500SCLRP is the primary substitute for P1500SC. It is the direct equivalent from Littelfuse Inc., maintaining identical electrical specifications and the same SIDACtor® series designation. P1500SCLRP is active in production status and ROHS3 compliant, addressing the obsolescence and compliance limitations of the original part.

SMP100LC-140 (STMicroelectronics) is a cross-manufacturer substitute with equivalent electrical performance. It matches the 140V off-state voltage, 400A peak pulse current (8/20µs), and 150mA hold current. The breakover voltage is 175V, within the acceptable range. This part is active and ROHS3 compliant.

SMP100MC-140 (STMicroelectronics) is a substitute with reduced peak pulse current capability (300A versus 400A at 8/20µs). Selection of this part is appropriate only when circuit requirements do not exceed 300A peak pulse current. It is active and ROHS3 compliant.

All three substitutes are housed in DO-214AA (SMB) packages suitable for surface mount assembly, ensuring mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can P1500SCLRP directly replace P1500SC in existing designs?

A: Yes. P1500SCLRP is electrically and mechanically identical to P1500SC. Both are Littelfuse SIDACtor® devices with 140V off-state voltage, 400A peak pulse current (8/20µs), and DO-214AA packaging. P1500SCLRP is the active production equivalent.

Q: What is the difference between SMP100LC-140 and SMP100MC-140?

A: Both are STMicroelectronics TRISIL™ series devices with 140V off-state voltage and DO-214AA packaging. The primary difference is peak pulse current: SMP100LC-140 handles 400A (8/20µs), while SMP100MC-140 handles 300A (8/20µs). Selection depends on circuit peak current requirements.

Q: Are there compliance differences between P1500SC and its substitutes?

A: Yes. P1500SC is RoHS non-compliant. P1500SCLRP, SMP100LC-140, and SMP100MC-140 are all ROHS3 compliant. For applications requiring RoHS compliance, any of the three substitutes is suitable.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (bulk, tape & reel, cut tape) does not affect electrical performance. It affects procurement, handling, and assembly logistics. All substitute parts are available in standard surface mount packaging formats.

Q: Can SMP100MC-140 be used if the circuit requires 400A peak pulse current?

A: No. SMP100MC-140 is rated for 300A peak pulse current (8/20µs), which is below the 400A requirement. Use SMP100LC-140 or P1500SCLRP for 400A applications.

Q: Are all substitutes available in the same DO-214AA package?

A: Yes. P1500SCLRP, SMP100LC-140, and SMP100MC-140 are all housed in DO-214AA (SMB) surface mount packages, ensuring direct mechanical compatibility with P1500SC PCB layouts.