S1MFS MWG Equivalent & Substitute Parts

Part Overview

The S1MFS MWG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 1000 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-128 package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are required due to inventory constraints, packaging format preferences, or application-specific qualifications such as automotive grade certifications.

Substiute Parts

S1MFS MWG

Taiwan Semiconductor CorporationIn Stock: 1421S1MFS MWG Datasheet

Current PartRFQ

S1MFS

Taiwan Semiconductor CorporationIn Stock: 29159S1MFS Datasheet

Parametric EquivalentRFQ

S1MFSH

Taiwan Semiconductor CorporationIn Stock: 29053S1MFSH Datasheet

Parametric EquivalentRFQ

S1MFSHMWG

Taiwan Semiconductor CorporationIn Stock: 20591S1MFSHMWG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1MFS MWG are determined by strict equivalence across all critical electrical parameters: reverse voltage rating (1000 V), average rectified current (1 A), forward voltage drop (1.1 V @ 1 A), recovery speed (Standard >500ns, >200mA), reverse leakage current (1 µA @ 1000 V), and junction capacitance (9 pF @ 4V, 1MHz). All substitute parts maintain identical SOD-128 surface mount packaging and operating temperature range (-55°C to 150°C). Substitution is further qualified by packaging format (Cut Tape versus Tape & Reel), product status (Active), and compliance certifications (ROHS3, REACH Unaffected). Automotive-grade variants with AEC-Q101 qualification are identified as distinct substitutes for applications requiring automotive-level reliability.

Parameter Comparison

Engineering Selection Recommendations

All four part numbers—S1MFS MWG, S1MFS, S1MFSH, and S1MFSHMWG—are electrically and mechanically equivalent for general-purpose rectification applications requiring 1000 V, 1 A surface mount diodes in SOD-128 packaging. Selection between these parts is determined by packaging format and application grade requirements.

S1MFS MWG is supplied in Cut Tape (CT) format with 1328 pieces in stock. This packaging is suitable for manual assembly, prototyping, or low-volume production runs.

S1MFS is supplied in Tape & Reel (TR) format with 29094 pieces in stock. This packaging is standard for automated pick-and-place assembly and high-volume manufacturing. Electrical and mechanical specifications are identical to S1MFS MWG.

S1MFSH is supplied in Tape & Reel (TR) format with 29004 pieces in stock and carries Automotive grade designation with AEC-Q101 qualification. This part is required for automotive applications subject to automotive reliability and qualification standards.

S1MFSHMWG is supplied in Tape & Reel (TR) format with 20488 pieces in stock and carries Automotive grade designation with AEC-Q101 qualification. This part is required for automotive applications subject to automotive reliability and qualification standards.

All parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Product status is Active for all variants.

Frequently Asked Questions (FAQ)

Q: Can S1MFS (Tape & Reel) be used as a direct substitute for S1MFS MWG (Cut Tape)?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. S1MFS in Tape & Reel format is suitable for automated assembly, while S1MFS MWG in Cut Tape format is suitable for manual or semi-automated assembly. Electrical performance, thermal characteristics, and compliance certifications are identical.

Q: What is the difference between standard-grade S1MFS and automotive-grade S1MFSH?

A: Both parts have identical electrical and mechanical specifications. S1MFSH carries Automotive grade designation and AEC-Q101 qualification, indicating compliance with automotive reliability standards. S1MFSH is required for automotive applications; standard-grade S1MFS is suitable for general industrial and consumer applications.

Q: Are S1MFSH and S1MFSHMWG interchangeable?

A: Yes. Both parts are automotive-grade with AEC-Q101 qualification and identical electrical specifications. The difference is packaging format: S1MFSH and S1MFSHMWG are both supplied in Tape & Reel format. Selection between them is based on inventory availability and supplier preference.

Q: What does SOD-128 package compatibility mean for substitution?

A: All four substitute parts use the SOD-128 surface mount package, ensuring identical PCB footprint, solder pad layout, and assembly process compatibility. No design changes or PCB modifications are required when substituting between these parts.

Q: Can these diodes be used in high-temperature applications?

A: Yes. All parts are rated for operating junction temperatures from -55°C to 150°C, supporting both industrial and automotive temperature ranges. Verify that your specific application thermal design does not exceed the 150°C maximum junction temperature limit.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that these components have no moisture sensitivity restrictions. They do not require special dry-pack storage, desiccant handling, or bake-out procedures prior to soldering. Standard storage conditions are acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four part numbers—S1MFS MWG, S1MFS, S1MFSH, and S1MFSHMWG—are ROHS3 compliant and REACH Unaffected, meeting environmental and regulatory requirements for EU and global markets.