MDQ-1/100 Equivalent & Substitute Parts Reference

Part Overview

The MDQ-1/100 is a 10 mA, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring circuit protection in the 10 milliampere range at 250 volts. The component requires a 3AB or 3AG fuse holder and is housed in a 1/4" x 1-1/4" (6.35mm x 31.75mm) form factor. The part maintains Active product status with 746 pieces currently in stock. Equivalent substitute parts are identified to provide alternative sourcing options when the primary manufacturer part is unavailable or when supply chain optimization is required.

Substiute Parts

MDQ-1/100

Eaton - Electronics DivisionIn Stock: 846MDQ-1/100 Datasheet

Current PartRFQ

0313.010HXP

Littelfuse Inc.In Stock: 8510313.010HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDQ-1/100 is determined by strict equivalence across the following critical parameters:

Current Rating: 10 mA (exact match required)

Voltage Rating: 250 V AC (exact match required)

Fuse Type: Cartridge, Glass (exact match required)

Response Time: Slow Blow (exact match required)

Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required for mechanical and electrical compatibility with existing holders)

Mounting Type: Requires Holder (exact match required)

Physical Dimensions: 0.250" Dia x 1.250" L / 6.35mm x 31.75mm (exact match required)

The substitute part 0313.010HXP manufactured by Littelfuse Inc. meets all mandatory equivalence criteria and is classified as a parametric equivalent. Both parts share identical electrical specifications, mechanical form factors, and holder compatibility requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the MDQ-1/100 and 0313.010HXP are Active status products suitable for direct substitution in applications requiring 10 mA, 250 V AC/DC glass cartridge fuses with slow-blow response characteristics.

Compliance Considerations:

The MDQ-1/100 carries CSA and UL approvals. The 0313.010HXP carries CE, CSA, and UL approvals. Both parts satisfy the regulatory requirements specified for the primary part. The additional CE certification on the Littelfuse part provides expanded compliance coverage for European applications.

Inventory and Availability:

MDQ-1/100: 746 pieces in stock (Eaton)

0313.010HXP: 777 pieces in stock (Littelfuse)

Both parts are available in equivalent quantities for immediate procurement.

Mechanical and Electrical Compatibility:

Both parts are mechanically and electrically interchangeable within 3AB and 3AG fuse holders. Identical physical dimensions and electrical ratings ensure drop-in replacement capability without modification to existing circuit protection assemblies.

Frequently Asked Questions (FAQ)

Q: Can the 0313.010HXP replace the MDQ-1/100 in existing applications?

A: Yes. The 0313.010HXP is a parametric equivalent with identical current rating (10 mA), voltage rating (250 V AC), fuse type (cartridge, glass), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). Both parts are compatible with 3AB and 3AG fuse holders and require no circuit modifications.

Q: Are there any differences in approval certifications between these parts?

A: The MDQ-1/100 carries CSA and UL approvals. The 0313.010HXP carries CE, CSA, and UL approvals. Both parts meet the regulatory requirements of the primary part. The Littelfuse part includes additional CE certification for European market compliance.

Q: What is the significance of the 3AB and 3AG package designation?

A: The 3AB and 3AG designations specify the fuse holder type required for installation. Both the MDQ-1/100 and 0313.010HXP are designed for use with these standardized holder types. Compatibility with these holders is mandatory for substitution eligibility.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts measure 0.250" diameter x 1.250" length (6.35mm x 31.75mm). Identical dimensions ensure mechanical fit within existing fuse holders without modification.

Q: What does "Slow Blow" response time mean?

A: Slow Blow indicates the fuse has a delayed response to overcurrent conditions. This characteristic allows temporary current surges to pass without nuisance fuse operation while still providing protection against sustained overcurrent conditions. Both the MDQ-1/100 and 0313.010HXP share this response characteristic.

Q: Can these fuses be used in DC applications?

A: Both parts are rated for 250 V AC/DC operation. The voltage rating applies to both alternating and direct current applications within the specified voltage limit.