SCHURTER M090.654 Equivalent & Substitute Parts

Part Overview

The SCHURTER M090.654 is a 250 mA AC DC fuse cartridge with glass construction in a 5mm x 20mm form factor. This component requires a compatible fuse holder for installation and operates with slow-blow response characteristics. The M090.654 carries an obsolete product status, necessitating identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

M090.654

SCHURTER Inc.In Stock: 1180M090.654 Datasheet

Current PartRFQ

0034.5037

SCHURTER Inc.In Stock: 9540034.5037 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M090.654 is based on strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Current Rating: 250 mA (exact match required)
• Fuse Type: Cartridge, Glass (form factor and construction type)
• Package / Case: 5mm x 20mm (physical dimensions for holder compatibility)
• Response Time: Slow Blow (thermal response characteristic)
• Mounting Type: Requires Holder (installation method)

The substitute part SCHURTER 0034.5037 satisfies all critical parameters while providing additional specifications including voltage rating (250 V AC), breaking capacity (35A @ rated voltage), and active product status. The substitute maintains mechanical compatibility with existing 5mm x 20mm fuse holders and electrical equivalence for circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 0034.5037 is the direct equivalent substitute for the obsolete M090.654. Selection of the 0034.5037 is supported by the following engineering factors:

Electrical Equivalence: Both components share identical current rating (250 mA), response time (slow blow), and fuse construction (cartridge, glass). The 0034.5037 provides explicit voltage rating (250 V AC) and breaking capacity (35A) specifications that define the protective characteristics for circuit applications.

Mechanical Compatibility: The 5mm x 20mm package dimensions ensure direct physical compatibility with existing fuse holders designed for the M090.654. The minor dimensional variance (0.205" vs 0.197" diameter) remains within standard holder tolerances for this form factor.

Product Status and Compliance: The 0034.5037 carries active product status with cURus approval agency certification, ROHS3 compliance, and REACH unaffected status. These certifications support continued use in new designs and production environments where regulatory compliance is required.

Inventory and Availability: The 0034.5037 maintains current inventory (857 Pcs) in active distribution channels, ensuring reliable component sourcing for replacement and new production applications.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.5037 directly replace the M090.654 in existing applications?

A: Yes. The 0034.5037 provides direct electrical and mechanical substitution. Both components share identical current rating (250 mA), response time (slow blow), fuse type (cartridge, glass), and package dimensions (5mm x 20mm). The 0034.5037 is compatible with all fuse holders designed for the M090.654.

Q: What is the significance of the voltage rating difference?

A: The M090.654 does not specify a voltage rating in available documentation. The 0034.5037 explicitly rates 250 V AC, which defines the maximum voltage at which the fuse provides rated breaking capacity (35A). This specification ensures the fuse operates within design parameters for AC applications up to 250 V.

Q: Are there dimensional compatibility concerns between the two parts?

A: The diameter dimension differs slightly (0.197" for M090.654 versus 0.205" for 0034.5037). Both dimensions fall within the standard 5mm x 20mm cartridge fuse tolerance range and are compatible with standard fuse holders for this form factor. The length dimension (0.787") is identical.

Q: What certifications does the substitute part carry?

A: The 0034.5037 carries cURus approval agency certification, indicating compliance with North American safety standards. The component is ROHS3 compliant and REACH unaffected, supporting use in regulated manufacturing and export environments.

Q: Why is the M090.654 listed as obsolete?

A: The M090.654 carries obsolete product status, indicating it is no longer in active production or distribution. The SCHURTER 0034.5037 represents the current active equivalent, ensuring continued availability and compliance with current manufacturing standards.

Q: What is the melting I²t value and its relevance?

A: The 0034.5037 specifies a melting I²t value of 2.53, which quantifies the thermal energy required to melt the fuse element. This parameter defines the fuse's response to overcurrent conditions and is essential for circuit protection coordination in applications requiring precise thermal characteristics.