R090.658 Equivalent & Substitute Parts

Part Overview

The R090.658 is a 630 mA slow blow fuse cartridge manufactured by SCHURTER Inc. in a glass construction with 5mm x 20mm dimensions. This component is classified as obsolete product status, requiring identification of suitable alternatives for ongoing applications. The obsolescence necessitates sourcing of functionally equivalent components that maintain electrical performance and mechanical compatibility within existing fuse holder assemblies.

Substiute Parts

R090.658

SCHURTER Inc.In Stock: 1030R090.658 Datasheet

Current PartRFQ

0001.2502

SCHURTER Inc.In Stock: 14570001.2502 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the R090.658 is determined by the following critical parameters that must remain constant across equivalent components:

Mandatory Matching Parameters:

• Current Rating: 630 mA
• Response Time: Slow Blow
• Package / Case: 5mm x 20mm
• Mounting Type: Requires Holder (mechanical compatibility with existing holders)

Acceptable Variations:

• Fuse construction material (glass to ceramic transition acceptable)
• Voltage ratings (provided they meet or exceed application requirements)
• Dimensional tolerance within package specification
• Product status (active status preferred for ongoing availability)

The substitute part 0001.2502 satisfies all mandatory parameters while offering enhanced specifications through ceramic construction and defined voltage ratings (250 V AC / 300 V DC), combined with active product status ensuring continued availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 0001.2502

The 0001.2502 is the direct functional equivalent for R090.658 replacement. Selection rationale is based on the following engineering criteria:

• Current Rating Match: Both components rated at 630 mA with identical slow blow response characteristics, ensuring equivalent circuit protection behavior
• Mechanical Compatibility: Both utilize 5mm x 20mm cartridge format compatible with standard fuse holders; dimensional variance (0.197" to 0.205" diameter) remains within typical holder tolerance specifications
• Product Status: 0001.2502 maintains active status with 1411 units in stock, providing assured long-term availability compared to obsolete R090.658
• Regulatory Compliance: 0001.2502 carries cURus and VDE approvals with ROHS3 compliance, meeting current regulatory requirements
• Material Enhancement: Ceramic construction of 0001.2502 provides superior thermal stability and defined voltage ratings (250 V AC / 300 V DC) compared to unspecified glass construction of R090.658

Application Verification: Confirm that application voltage requirements do not exceed 250 V AC or 300 V DC ratings of the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the 0001.2502 be used directly in place of R090.658?

A: Yes. Both components share identical current rating (630 mA), response time (slow blow), and package format (5mm x 20mm). The 0001.2502 is mechanically and electrically compatible with existing R090.658 fuse holders.

Q: What is the primary difference between R090.658 and 0001.2502?

A: The R090.658 uses glass construction while 0001.2502 uses ceramic construction. The 0001.2502 additionally specifies voltage ratings (250 V AC / 300 V DC) and includes regulatory certifications (cURus, VDE, ROHS3) not documented for the R090.658.

Q: Are there dimensional compatibility concerns?

A: The R090.658 measures 0.197" diameter while 0001.2502 measures 0.205" diameter. This 0.008" difference remains within standard fuse holder tolerance specifications and does not prevent mechanical installation.

Q: Why is product status important for this substitution?

A: The R090.658 is classified as obsolete, indicating discontinued manufacturing and limited inventory availability. The 0001.2502 maintains active status with 1411 units in stock, ensuring reliable sourcing for current and future applications.

Q: Does the ceramic construction of 0001.2502 affect circuit protection performance?

A: No. Both glass and ceramic fuse constructions provide equivalent electrical protection at the specified 630 mA slow blow rating. Ceramic construction offers enhanced thermal stability and is the industry standard for modern fuse cartridges.

Q: What voltage applications are suitable for 0001.2502?

A: The 0001.2502 is rated for maximum 250 V AC or 300 V DC. Confirm application voltage does not exceed these limits before substitution.

Q: Are regulatory certifications important for this application?

A: Yes. The 0001.2502 carries cURus and VDE approvals with ROHS3 compliance, meeting current regulatory requirements for electrical safety and environmental standards. These certifications are not documented for the obsolete R090.658.