SCHURTER V090.661 Equivalent & Substitute Parts

Part Overview

The SCHURTER V090.661 is a 1.25 A AC DC fuse cartridge with a glass body in a 5mm x 20mm form factor. This component requires a compatible fuse holder for installation and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement applications.

Substiute Parts

V090.661

SCHURTER Inc.In Stock: 972V090.661 Datasheet

Current PartRFQ

0001.2505

SCHURTER Inc.In Stock: 122240001.2505 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V090.661 is determined by the following critical parameters:

Current Rating: The substitute part must provide 1.25 A protection, matching the original specification.

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

Response Time: The slow blow characteristic must be maintained to ensure proper circuit protection behavior.

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

Fuse Body Material: While the original uses glass construction, ceramic cartridge fuses of identical electrical ratings and dimensions are functionally equivalent in holder-based applications.

The SCHURTER 0001.2505 meets all substitution criteria through matching current rating, package dimensions, response time, and mounting requirements, while providing enhanced voltage ratings and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 0001.2505 is the direct substitute for the obsolete V090.661 based on the following engineering criteria:

Electrical Equivalence: Both parts provide identical 1.25 A slow blow protection with matching response characteristics.

Physical Compatibility: The 5mm x 20mm package dimensions ensure direct compatibility with existing fuse holder installations. The minor diameter variance (0.197" to 0.205") remains within standard holder tolerances.

Product Status: The 0001.2505 is active and in production, providing long-term availability and supply chain continuity compared to the obsolete V090.661.

Compliance and Certifications: The 0001.2505 carries multiple international approvals (CCC, cURus, KC, PSE/JET, VDE) and is ROHS3 compliant, meeting modern regulatory requirements.

Enhanced Specifications: The substitute provides explicit voltage ratings (250 V AC, 300 V DC) and breaking capacity (1.5kA) not specified in the original part, offering improved documentation and performance assurance.

Frequently Asked Questions (FAQ)

Q: Can the 0001.2505 be used directly in place of the V090.661?

A: Yes. Both parts share identical current ratings (1.25 A), response time (slow blow), and package dimensions (5mm x 20mm). The 0001.2505 is physically and electrically compatible with existing V090.661 fuse holder installations.

Q: What is the difference between glass and ceramic fuse cartridges?

A: Glass and ceramic cartridge fuses provide equivalent electrical protection when rated identically. Ceramic construction offers enhanced thermal stability and breaking capacity. Both types function identically in holder-based applications with matching current and voltage ratings.

Q: Does the slight diameter difference (0.197" vs 0.205") affect compatibility?

A: No. The 0.008" diameter variance falls within standard fuse holder tolerances and does not impact physical or electrical compatibility.

Q: Why does the 0001.2505 specify voltage ratings when the V090.661 does not?

A: The 0001.2505 provides complete electrical specifications (250 V AC, 300 V DC) as part of its active product documentation. These ratings define the maximum voltage at which the fuse provides rated protection. The V090.661 specifications were not provided in available documentation.

Q: Is the 0001.2505 suitable for new designs?

A: Yes. The 0001.2505 is an active product with current certifications (ROHS3, VDE, cURus, PSE/JET, KC, CCC) and is recommended for both replacement and new design applications.

Q: What is the melting I²t value and why is it important?

A: The 0001.2505 has a melting I²t of 1.86, which defines the thermal energy required to melt the fuse element. This parameter ensures consistent protection characteristics and is used in circuit protection calculations.