P1500SA Equivalent & Substitute Parts

Part Overview

The P1500SA is a 140V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series, packaged in DO-214AA (SMB). This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. 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

P1500SA

Littelfuse Inc.In Stock: 30501P1500SA 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

SMTPA130

STMicroelectronicsIn Stock: 3893SMTPA130 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P1500SA is determined by the following critical parameters: off-state voltage (140V), package type (DO-214AA/SMB surface mount), single element configuration, and hold current (150mA). Substitute parts are grouped into two categories:

Direct Equivalent (Same Electrical Specifications):

• P1500SALRP: Identical electrical characteristics with active product status and RoHS3 compliance. Differs only in packaging format (Tape & Reel vs. bulk).

Functional Equivalents (Voltage and Package Compatible):

• SMP100LC-140 and SMP100MC-140 (STMicroelectronics): Maintain 140V off-state voltage and DO-214AA package. Peak pulse current ratings differ (400A and 300A respectively vs. 150A), providing higher transient suppression capability.
• SMTPA130 (STMicroelectronics): Operates at 130V off-state voltage with matching 150A peak pulse current and DO-214AA package, suitable for applications tolerating lower voltage rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: P1500SALRP is the direct equivalent replacement. It maintains identical electrical specifications while offering active product status and RoHS3 compliance, eliminating obsolescence risk and regulatory concerns for new designs.

Higher Current Capacity Alternatives: SMP100LC-140 (400A) and SMP100MC-140 (300A) provide enhanced transient suppression capability while maintaining 140V off-state voltage and DO-214AA packaging. These are suitable for applications requiring greater peak pulse current handling than the original 150A specification.

Lower Voltage Alternative: SMTPA130 operates at 130V off-state voltage with matching 150A peak pulse current. This part is applicable only in circuits where the reduced voltage rating is acceptable and provides design margin.

All substitute options feature RoHS3 compliance and active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can P1500SALRP directly replace P1500SA without circuit modification? A: Yes. P1500SALRP is electrically identical to P1500SA, differing only in packaging format (Tape & Reel). No circuit changes are required.

Q: What is the primary reason to substitute the P1500SA? A: The P1500SA is obsolete. P1500SALRP provides the same functionality with active product status and RoHS3 compliance.

Q: Are STMicroelectronics SMP100 series parts pin-compatible with P1500SA? A: Yes. SMP100LC-140 and SMP100MC-140 share the same DO-214AA package and pinout. They differ in peak pulse current ratings (400A and 300A respectively).

Q: Can SMTPA130 be used in place of P1500SA? A: SMTPA130 is compatible in package and mounting type but operates at 130V off-state voltage versus 140V. Use only if circuit design tolerates the lower voltage rating.

Q: What is the impact of higher capacitance in SMP100 series parts? A: SMP100LC-140 (65pF) and SMP100MC-140 (60pF) have higher capacitance than P1500SA (40pF). This affects high-frequency circuit behavior and should be evaluated in applications sensitive to capacitive loading.

Q: Are all substitute parts RoHS compliant? A: P1500SALRP, SMP100LC-140, SMP100MC-140, and SMTPA130 are all RoHS3 compliant. The original P1500SA is non-compliant.