S5PMS-M3/86A Equivalent & Substitute Parts

Part Overview

The S5PMS-M3/86A is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode is rated for 1000 V DC reverse voltage with 1.8 A average rectified current and operates across a junction temperature range of -55°C to 150°C. The device is packaged in TO-277A (SMPC) configuration and maintains Active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compatibility with the application's thermal, mechanical, and regulatory requirements.

Substiute Parts

S5PMS-M3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 992S5PMS-M3/86A Datasheet

Current PartRFQ

STTH310S

STMicroelectronicsIn Stock: 17330STTH310S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S5PMS-M3/86A is determined by the following critical parameters:

Voltage Rating: The substitute must maintain a DC reverse voltage rating of 1000 V or greater to ensure equivalent or superior voltage withstand capability.

Current Rating: The substitute must support the 1.8 A average rectified current requirement. Substitutes with higher current ratings remain compatible as they operate within the application's current envelope.

Recovery Characteristics: The substitute may operate with different recovery speed classifications (Standard or Fast Recovery) provided the reverse recovery time and leakage current specifications remain within acceptable application limits.

Temperature Range: The substitute must support the operating junction temperature range of -55°C to 150°C or a range that encompasses this specification.

Regulatory Compliance: The substitute must maintain RoHS3 compliance and REACH Unaffected status to satisfy regulatory requirements.

Mounting Configuration: The substitute must be surface mount technology to maintain PCB assembly compatibility.

The STTH310S from STMicroelectronics qualifies as a substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Package Compatibility: The S5PMS-M3/86A uses TO-277 (3-PowerDFN) packaging while the STTH310S uses DO-214AB (SMC) packaging. These packages have different physical dimensions and PCB footprints. Substitution requires confirmation that the PCB layout accommodates the DO-214AB footprint or that a redesign is feasible.

Electrical Performance: The STTH310S meets or exceeds all critical electrical parameters. The higher current rating (3 A versus 1.8 A) and faster recovery time (75 ns versus 2.5 µs) provide operational margin within the application's requirements.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and MSL Level 1 classification, satisfying regulatory and supply chain requirements.

Temperature Operating Range: The STTH310S supports an extended temperature range (-40°C to 175°C) that encompasses the S5PMS-M3/86A specification (-55°C to 150°C). The lower minimum temperature of the main part (-55°C) requires confirmation that the STTH310S is acceptable for the specific application environment.

Product Status: Both parts maintain Active product status, ensuring continued availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the STTH310S directly replace the S5PMS-M3/86A without PCB modification?

A: Direct replacement without PCB modification is not possible due to package differences. The S5PMS-M3/86A uses TO-277 (3-PowerDFN) while the STTH310S uses DO-214AB (SMC). These packages have different lead configurations and footprints. PCB layout verification or redesign is required.

Q: What is the significance of the higher current rating on the STTH310S?

A: The STTH310S is rated for 3 A average rectified current compared to 1.8 A for the S5PMS-M3/86A. This higher rating indicates the substitute can safely handle the application's current requirement with additional thermal margin. The application will not exceed the substitute's current capability.

Q: Does the faster recovery time of the STTH310S affect circuit performance?

A: The STTH310S has a reverse recovery time of 75 ns compared to 2.5 µs for the S5PMS-M3/86A. Faster recovery reduces switching losses and electromagnetic interference. This characteristic is generally beneficial in rectifier applications and does not create compatibility issues.

Q: Are there temperature range limitations when substituting?

A: The S5PMS-M3/86A operates from -55°C to 150°C junction temperature. The STTH310S operates from -40°C to 175°C. If the application requires operation below -40°C, the STTH310S is not suitable. Confirm the actual operating environment temperature requirements before substitution.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the S5PMS-M3/86A and STTH310S are ROHS3 compliant, REACH Unaffected, and classified as MSL Level 1 (Unlimited moisture sensitivity). Regulatory compliance is equivalent.

Q: What is the difference between Standard and Fast Recovery classifications?

A: The S5PMS-M3/86A is classified as Standard Recovery (>500 ns) while the STTH310S is Fast Recovery (≤500 ns). Fast Recovery diodes have shorter reverse recovery times, reducing switching losses. Both classifications are suitable for general-purpose rectification applications.

Q: Is the forward voltage difference between the parts significant?

A: The S5PMS-M3/86A specifies 1.15 V forward voltage at 5 A, while the STTH310S specifies 1.7 V at 3 A. These measurements occur at different current levels, making direct comparison imprecise. Both values are typical for 1000 V rectifier diodes and acceptable for general-purpose applications.