P1500SARP Equivalent & Substitute Parts

Part Overview

The P1500SARP is a 140V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, housed in a DO-214AA SMB package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. The part operates with a 180V breakover voltage and 4V on-state voltage, designed for transient voltage suppression applications requiring surface mount integration.

Substiute Parts

P1500SARP

Littelfuse Inc.In Stock: 5253P1500SARP Datasheet

Current PartRFQ

P1500SALRP

Littelfuse Inc.In Stock: 1347P1500SALRP 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 P1500SARP is determined by the following critical parameters: off-state voltage (140V), package type (DO-214AA SMB), mounting configuration (surface mount), and hold current (150mA). All substitute parts must maintain these core electrical and mechanical specifications to ensure functional compatibility within the application circuit.

The substitute parts identified fall into two categories:

Direct Equivalent (Same Manufacturer): P1500SALRP maintains identical electrical specifications and package configuration, differing only in product status (active vs. obsolete) and packaging format (tape & reel vs. bulk).

Cross-Manufacturer Alternatives: SMP100LC-140 and SMP100MC-140 from STMicroelectronics provide equivalent 140V off-state voltage and DO-214AA packaging but with higher peak pulse current ratings (400A and 300A respectively) and different breakover voltages (175V). These parts are suitable where higher current handling is acceptable within the application design margins.

Parameter Comparison

Engineering Selection Recommendations

P1500SALRP is the primary direct substitute for P1500SARP. Both parts are manufactured by Littelfuse Inc. with identical electrical specifications and package configuration. P1500SALRP is currently in active production status with ROHS3 compliance, addressing the obsolescence and regulatory compliance limitations of the original part. Selection of P1500SALRP requires no circuit redesign and maintains full functional equivalence.

SMP100LC-140 and SMP100MC-140 from STMicroelectronics are cross-manufacturer alternatives suitable for applications where higher peak pulse current handling is acceptable. Both parts maintain the 140V off-state voltage and DO-214AA package required for mechanical and electrical compatibility. The 5V difference in breakover voltage (175V vs. 180V) and increased capacitance (60-65pF vs. 40pF) must be evaluated within specific application circuit requirements. Both alternatives carry ROHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can P1500SALRP be used as a direct replacement for P1500SARP?

A: Yes. P1500SALRP is a direct equivalent with identical electrical specifications (140V off-state, 150A peak pulse current, 4V on-state voltage) and package configuration (DO-214AA SMB). The primary differences are product status (active vs. obsolete) and packaging format (tape & reel availability). No circuit modifications are required.

Q: What are the key differences between P1500SARP and the STMicroelectronics alternatives?

A: SMP100LC-140 and SMP100MC-140 maintain the 140V off-state voltage and DO-214AA package but offer higher peak pulse current ratings (400A and 300A respectively versus 150A). Breakover voltage is 175V instead of 180V, and capacitance is higher (60-65pF versus 40pF). These differences must be evaluated against application-specific circuit requirements.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the DO-214AA SMB package with surface mount configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What compliance certifications apply to substitute parts?

A: P1500SALRP, SMP100LC-140, and SMP100MC-140 are all ROHS3 compliant and REACH unaffected. The original P1500SARP is RoHS non-compliant, making the substitutes suitable for applications requiring regulatory compliance.

Q: How do the peak pulse current ratings affect substitution decisions?

A: The original P1500SARP is rated for 150A peak pulse (8/20µs). SMP100LC-140 and SMP100MC-140 provide 400A and 300A respectively. Higher ratings provide additional margin but do not prevent substitution if the application circuit operates within the original 150A specification. Circuit validation is necessary to confirm compatibility with the different breakover voltage.