BK/MDQ-V-3/4 Equivalent & Substitute Parts

Part Overview

The BK/MDQ-V-3/4 is a 750 mA, 250 V AC/DC slow-blow glass cartridge fuse with 3AB/3AG package configuration and 1/4" x 1-1/4" axial dimensions. This fuse is designed for through-hole mounting applications requiring circuit protection with controlled response characteristics. The part is currently active in production with 855 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design standardization needs.

Substiute Parts

BK/MDQ-V-3/4

Eaton - Electronics DivisionIn Stock: 886BK/MDQ-V-3/4 Datasheet

Current PartRFQ

BK/MDL-V-3/4-R

Eaton - Electronics DivisionIn Stock: 1139BK/MDL-V-3/4-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/MDQ-V-3/4 with the BK/MDL-V-3/4-R is based on strict equivalence of the following critical parameters:

• Current Rating: Both parts rated at 750 mA
• Voltage Rating (AC): Both rated at 250 V
• Response Time: Both classified as Slow Blow
• Fuse Type: Both are Cartridge, Glass construction
• Package / Case: Both use 3AB, 3AG, 1/4" x 1-1/4" (Axial) configuration
• Mounting Type: Both are Through Hole
• Breaking Capacity: Both rated at 35 A @ rated voltage
• Physical Dimensions: Both measure 0.266" Dia x 1.292" L (6.76mm x 32.82mm)

These parameters define the functional and mechanical interchangeability of the substitute part within the same circuit protection application.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/MDQ-V-3/4 and BK/MDL-V-3/4-R are active production parts from Eaton - Electronics Division with identical electrical and mechanical specifications for circuit protection applications. The BK/MDL-V-3/4-R offers expanded regulatory compliance with CE certification in addition to CSA and UL approvals, and carries RoHS Compliant status. The BK/MDQ-V-3/4 is RoHS non-compliant. Selection between these parts should be based on regulatory requirements of the end application and compliance mandates of the target market. Both parts are suitable for 750 mA, 250 V AC/DC slow-blow protection in through-hole mounted 3AB/3AG cartridge fuse applications.

Frequently Asked Questions (FAQ)

Q: Can the BK/MDL-V-3/4-R be used as a direct replacement for the BK/MDQ-V-3/4?

A: Yes. Both parts share identical current rating (750 mA), voltage rating (250 V AC), response time (Slow Blow), fuse type (Cartridge, Glass), package configuration (3AB, 3AG, 1/4" x 1-1/4" Axial), mounting type (Through Hole), breaking capacity (35 A), and physical dimensions (0.266" Dia x 1.292" L). These parameters define functional and mechanical interchangeability.

Q: What are the differences between these two parts?

A: The primary differences are: (1) Series designation (MDQ vs. MDL), (2) Regulatory approvals (BK/MDL-V-3/4-R includes CE certification), (3) RoHS compliance status (BK/MDL-V-3/4-R is RoHS Compliant; BK/MDQ-V-3/4 is RoHS non-compliant), and (4) DC Cold Resistance specification (0.39685 Ohms vs. 0.397 Ohms, within tolerance). Inventory levels also differ (855 vs. 1046 units).

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.266" Dia x 1.292" L (6.76mm x 32.82mm) and use the same 3AB, 3AG package configuration, ensuring identical through-hole mounting compatibility.

Q: Which part should be selected for RoHS-compliant applications?

A: The BK/MDL-V-3/4-R is RoHS Compliant and should be selected for applications requiring RoHS compliance. The BK/MDQ-V-3/4 is RoHS non-compliant.

Q: Do both parts have the same breaking capacity?

A: Yes. Both parts are rated at 35 A breaking capacity at the rated voltage of 250 V AC.

Q: Are there any temperature rating differences?

A: Operating temperature specifications are not provided for either part in the available technical data.