MDQ-2-8/10 Equivalent & Substitute Parts Reference

Part Overview

The MDQ-2-8/10 is a 2.8 A, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring overcurrent protection in circuits rated up to 250 V AC. The component is mounted within a 3AB or 3AG fuse holder and features a 1/4" x 1-1/4" form factor. The part maintains active product status with 1061 units in current inventory. Equivalent substitute parts are identified to support procurement flexibility, supply chain continuity, and design standardization across compatible applications.

Substiute Parts

MDQ-2-8/10

Eaton - Electronics DivisionIn Stock: 1097MDQ-2-8/10 Datasheet

Current PartRFQ

BK/MDL-2-8/10-R

Eaton - Electronics DivisionIn Stock: 988BK/MDL-2-8/10-R Datasheet

Parametric EquivalentRFQ

031302.8HXP

Littelfuse Inc.In Stock: 1021031302.8HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDQ-2-8/10 are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Current Rating: 2.8 A (exact match required)
• Voltage Rating (AC): 250 V (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)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.250" Dia x 1.250" L / 6.35mm x 31.75mm (exact match required)

All identified substitute parts meet these mandatory criteria, ensuring direct functional and mechanical compatibility without modification to existing fuse holder assemblies or circuit designs.

Parameter Comparison

Engineering Selection Recommendations

MDQ-2-8/10 (Eaton - Electronics Division) Select this part as the primary choice when Eaton supply chain preference is established or when CSA and UL certifications are the sole regulatory requirements. Active product status and highest inventory level (1061 units) support immediate availability.

BK/MDL-2-8/10-R (Eaton - Electronics Division) This substitute is functionally equivalent and maintains Eaton manufacturer continuity. RoHS Compliance certification is provided. Select when RoHS compliance is required and Eaton sourcing is preferred. Inventory of 900 units supports standard procurement timelines.

031302.8HXP (Littelfuse Inc.) This substitute provides the broadest regulatory certification coverage (CE, CSA, K-MARK, PSE, UL) and extended operating temperature range (-55°C ~ 125°C). ROHS3 Compliance and REACH Unaffected status are documented. Select when multi-regional compliance or extended temperature operation is required. Inventory of 940 units is available.

All three parts are active products with equivalent electrical and mechanical specifications. Selection should be based on supply chain strategy, regulatory certification requirements, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can BK/MDL-2-8/10-R be used as a direct replacement for MDQ-2-8/10? A: Yes. Both parts share identical electrical ratings (2.8 A, 250 V AC), fuse type (Cartridge, Glass), response time (Slow Blow), and physical dimensions (0.250" Dia x 1.250" L). Both require 3AB or 3AG fuse holders. No circuit or holder modifications are necessary.

Q: Can 031302.8HXP from Littelfuse be used as a direct replacement for MDQ-2-8/10? A: Yes. The 031302.8HXP meets all critical electrical and mechanical parameters: 2.8 A current rating, 250 V AC voltage rating, Cartridge Glass fuse type, Slow Blow response, and 3AB/3AG package compatibility with identical 0.250" Dia x 1.250" L dimensions. No holder or circuit modifications are required.

Q: What are the key parameters that determine substitution compatibility? A: Substitution compatibility is determined by exact matching of: Current Rating (2.8 A), Voltage Rating - AC (250 V), Fuse Type (Cartridge, Glass), Response Time (Slow Blow), Package / Case (3AB, 3AG, 1/4" x 1-1/4"), Mounting Type (Requires Holder), and Physical Dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm). All identified substitutes meet these criteria.

Q: Are there differences in regulatory certifications among the three parts? A: Yes. MDQ-2-8/10 carries CSA and UL certifications. BK/MDL-2-8/10-R certifications are not specified in available data. 031302.8HXP carries CE, CSA, K-MARK, PSE, and UL certifications, providing broader multi-regional compliance coverage.

Q: Does operating temperature range affect substitution decisions? A: Operating temperature is not specified for MDQ-2-8/10 or BK/MDL-2-8/10-R. The 031302.8HXP specifies -55°C ~ 125°C operation. If your application requires operation outside standard ambient conditions, the 031302.8HXP provides documented temperature performance.

Q: Are RoHS compliance differences significant for substitution? A: BK/MDL-2-8/10-R is RoHS Compliant. 031302.8HXP is ROHS3 Compliant. MDQ-2-8/10 RoHS status is not specified. If RoHS compliance is a design requirement, BK/MDL-2-8/10-R or 031302.8HXP are appropriate selections.

Q: What is the breaking capacity specification and does it affect substitution? A: MDQ-2-8/10 and 031302.8HXP both specify 100 A breaking capacity at rated voltage. BK/MDL-2-8/10-R breaking capacity is not specified. All three parts are functionally equivalent for standard overcurrent protection applications.