S090.659 Equivalent & Substitute Parts

Part Overview

The S090.659 is an 800 mA AC/DC fuse cartridge manufactured by SCHURTER Inc. in a 5mm x 20mm glass construction. This component is classified as obsolete and requires a dedicated fuse holder for installation. Due to its obsolete product status, identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement applications.

Substiute Parts

S090.659

SCHURTER Inc.In Stock: 750S090.659 Datasheet

Current PartRFQ

0001.2503

SCHURTER Inc.In Stock: 21310001.2503 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S090.659 is determined by the following critical parameters:

Current Rating: The substitute part must provide 800 mA protection, matching the original specification.

Package / Case Dimensions: The 5mm x 20mm form factor is mandatory to ensure physical compatibility with existing fuse holders.

Response Time: Slow Blow characteristic must be maintained to preserve circuit protection behavior.

Mounting Type: The substitute must also require a holder, maintaining the same installation methodology.

The primary substitute, part number 0001.2503, satisfies all these core parameters while offering enhanced specifications including voltage ratings (250 V AC / 300 V DC), ceramic construction, and active product status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The 0001.2503 serves as the direct substitute for the obsolete S090.659 based on matching current rating, response time, and physical form factor. The transition from glass to ceramic construction in the substitute part provides enhanced durability and thermal performance.

The substitute part 0001.2503 carries active product status with current manufacturing availability (2076 pieces in stock), ensuring long-term supply chain reliability compared to the obsolete S090.659. The substitute includes formal approvals from cURus and VDE certification bodies, along with ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements.

The dimensional variance (0.205" diameter versus 0.197" diameter) remains within acceptable mechanical tolerances for standard 5mm x 20mm fuse holder applications. The specified voltage ratings (250 V AC / 300 V DC) and breaking capacity (1.5 kA) of the substitute provide adequate protection margins for typical circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 0001.2503 be used as a direct replacement for the S090.659?

A: Yes. Both parts share identical current ratings (800 mA), response time (Slow Blow), and package dimensions (5mm x 20mm). Both require a fuse holder for installation. The substitute offers enhanced specifications and active product status.

Q: What is the primary difference between the S090.659 and 0001.2503?

A: The main difference is construction material: the S090.659 uses glass, while the 0001.2503 uses ceramic. The substitute also includes specified voltage ratings (250 V AC / 300 V DC), formal certifications (cURus, VDE), and ROHS3 compliance.

Q: Will the 0001.2503 fit in existing S090.659 fuse holders?

A: The dimensional specifications are compatible. The S090.659 measures 0.197" diameter, while the 0001.2503 measures 0.205" diameter. Both conform to the 5mm x 20mm standard form factor and function with standard 5mm x 20mm fuse holders.

Q: Why is the S090.659 listed as obsolete?

A: The S090.659 is no longer in active production. The 0001.2503 represents the current active equivalent from SCHURTER Inc., offering improved specifications and regulatory compliance.

Q: Are there voltage rating considerations when substituting?

A: The S090.659 does not specify voltage ratings in the provided data. The 0001.2503 specifies 250 V AC and 300 V DC ratings. Verify that your application voltage requirements do not exceed these limits.

Q: What certifications does the substitute part carry?

A: The 0001.2503 carries cURus and VDE approvals, is ROHS3 compliant, and is REACH unaffected. The original S090.659 certification information is not provided.