Equivalent & Substitute Parts for MDQ-5 Glass Cartridge Fuse

Part Overview

The MDQ-5 is a 5 A, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 3AB and 3AG holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The product is active and currently in stock with 974 units available. Substitute parts are identified based on matching electrical ratings, mechanical dimensions, fuse type, and response characteristics. Alternative models may be required due to supply chain considerations, regional compliance requirements, or specific application certifications.

Substiute Parts

MDQ-5

Eaton - Electronics DivisionIn Stock: 1065MDQ-5 Datasheet

Current PartRFQ

BK/MDL-5-R

Eaton - Electronics DivisionIn Stock: 936BK/MDL-5-R Datasheet

Parametric EquivalentRFQ

BK/MDQ-5

Eaton - Electronics DivisionIn Stock: 1363BK/MDQ-5 Datasheet

Parametric EquivalentRFQ

MDL-5-R

Eaton - Electronics DivisionIn Stock: 966MDL-5-R Datasheet

Parametric EquivalentRFQ

0313005.HXIDP

Littelfuse Inc.In Stock: 8380313005.HXIDP Datasheet

Parametric EquivalentRFQ

0313005.HXP

Littelfuse Inc.In Stock: 51250313005.HXP Datasheet

Parametric EquivalentRFQ

0313005.MXP

Littelfuse Inc.In Stock: 22300313005.MXP Datasheet

Parametric EquivalentRFQ

0313005.VXIDP

Littelfuse Inc.In Stock: 7740313005.VXIDP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDQ-5 are qualified based on the following criteria:

Mandatory Matching Parameters:

• Current Rating: 5 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Breaking Capacity @ Rated Voltage: 200 A
• Mounting Type: Requires Holder

All identified substitute parts meet these mandatory electrical and mechanical parameters. Variations in DC Cold Resistance, Melting I²t, approval agencies, RoHS compliance status, and operating temperature ranges are secondary characteristics that do not affect basic substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with current manufacturing status. Selection among equivalent parts should be based on the following factors:

Manufacturer Availability: Eaton - Electronics Division parts (BK/MDL-5-R, BK/MDQ-5, MDL-5-R) maintain the original manufacturer source. Littelfuse Inc. parts (0313005.HXIDP, 0313005.HXP, 0313005.MXP, 0313005.VXIDP) provide cross-manufacturer alternatives.

Certification Coverage: The MDQ-5 carries CSA and UL approvals. Eaton substitute parts maintain CSA and UL certifications. Littelfuse parts provide expanded certification coverage including CE, CSA, K-MARK, KC, and PSE, which may be required for specific regional applications.

RoHS Compliance: BK/MDL-5-R and MDL-5-R are ROHS3 compliant. BK/MDQ-5 is RoHS non-compliant. All Littelfuse parts are ROHS3 compliant. Selection should align with end-product RoHS requirements.

Inventory Availability: 0313005.HXP (Littelfuse) has the highest inventory at 5083 units. BK/MDQ-5 (Eaton) has 1269 units. Other parts range from 729 to 974 units.

Operating Temperature Range: The MDQ-5 does not specify an operating temperature range. Littelfuse parts specify -55°C ~ 125°C operating range, providing defined thermal performance boundaries.

Frequently Asked Questions (FAQ)

Q: Can I substitute MDQ-5 with any of the listed parts without circuit modification?

A: Yes. All listed substitute parts match the mandatory electrical parameters (5 A, 250 V AC, slow-blow response) and mechanical dimensions (3AB/3AG, 1/4" x 1-1/4"). No circuit modification is required for direct substitution.

Q: What is the difference between Eaton and Littelfuse substitute parts?

A: Both manufacturers provide parts meeting identical electrical and mechanical specifications. Differences exist in DC Cold Resistance (Eaton: 0.025-0.0265 Ohms; Littelfuse: 0.0214 Ohms), Melting I²t values, certification scope, and RoHS compliance status. These differences do not affect basic fuse function within the specified electrical ratings.

Q: Are there differences in the Littelfuse 0313005 series parts?

A: The 0313005.HXP, 0313005.HXIDP, 0313005.MXP, and 0313005.VXIDP parts share identical electrical ratings and dimensions. Primary differences are Melting I²t values (0313005.HXP and 0313005.VXIDP: 140; 0313005.MXP: 276; 0313005.HXIDP: 140) and specific certification combinations. All are ROHS3 compliant and carry CE, CSA, K-MARK, PSE, and UL approvals.

Q: Which substitute part should I select for maximum inventory availability?

A: 0313005.HXP (Littelfuse Inc.) has the highest inventory at 5083 units in stock.

Q: Do all substitute parts fit in 3AB and 3AG holders?

A: Yes. All substitute parts are specified for 3AB and 3AG holders with identical dimensions of 0.250" Dia x 1.250" L (6.35mm x 31.75mm).

Q: What is the significance of the "BK/" prefix on some Eaton parts?

A: The BK/ prefix designates a specific product variant within the Eaton product line. BK/MDL-5-R and BK/MDQ-5 are equivalent to their non-prefixed counterparts (MDL-5-R and MDQ-5) in electrical and mechanical specifications.

Q: Are there regional compliance considerations for part selection?

A: Yes. The MDQ-5 carries CSA and UL approvals. Littelfuse parts provide expanded certifications including CE, K-MARK, KC, and PSE, which may be required for European, Korean, and Japanese markets respectively. Eaton parts maintain CSA and UL certifications suitable for North American applications.