Equivalent & Substitute Parts for BK/MDL-7-1/2-R

Part Overview

The BK/MDL-7-1/2-R is a glass cartridge fuse manufactured by Eaton - Electronics Division, rated at 7.5 A, 250 V AC/DC with slow-blow response characteristics. This fuse is designed for use in 3AB and 3AG holder configurations and requires an external fuse holder for installation. The part maintains active product status with 1097 pieces currently in stock. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing and maintenance operations.

Substiute Parts

BK/MDL-7-1/2-R

Eaton - Electronics DivisionIn Stock: 1207BK/MDL-7-1/2-R Datasheet

Current PartRFQ

MDL-7-1/2-R

Eaton - Electronics DivisionIn Stock: 1106MDL-7-1/2-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/MDL-7-1/2-R is determined by strict equivalence across the following critical parameters:

Current Rating: 7.5 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)

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

Mounting Type: Requires Holder (exact match required)

Substitute parts must satisfy all parameters listed above to ensure mechanical fit, electrical performance, and functional compatibility within existing circuit protection designs.

Parameter Comparison

Engineering Selection Recommendations

The MDL-7-1/2-R substitute part is a direct parametric equivalent to the BK/MDL-7-1/2-R. Both parts are manufactured by Eaton - Electronics Division, maintain active product status, and satisfy identical electrical and mechanical specifications. Both parts are RoHS compliant and classified under the same ECCN and HTSUS codes, confirming regulatory and trade compliance alignment.

Selection between the main part and substitute should be based on inventory availability and procurement lead times. The main part (BK/MDL-7-1/2-R) has 1097 pieces in stock, while the substitute (MDL-7-1/2-R) has 1033 pieces available. Both parts are suitable for direct substitution in circuit protection applications requiring 7.5 A, 250 V AC/DC slow-blow fuse cartridges in 3AB/3AG holder configurations.

Frequently Asked Questions (FAQ)

Q: Can MDL-7-1/2-R be used as a direct replacement for BK/MDL-7-1/2-R?

A: Yes. The MDL-7-1/2-R is a parametric equivalent. Both parts share identical current rating (7.5 A), voltage rating (250 V AC), fuse type (Cartridge, Glass), response time (Slow Blow), package configuration (3AB, 3AG), and physical dimensions (0.250" Dia x 1.250" L). Direct substitution is supported without circuit modification.

Q: Are there any compatibility concerns with existing fuse holders?

A: No. Both parts require the same holder type (3AB, 3AG) and share identical physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm). Mechanical fit and electrical contact compatibility are guaranteed.

Q: What is the difference between ROHS3 Compliant and RoHS Compliant designations?

A: Both designations confirm RoHS compliance. ROHS3 Compliant indicates compliance with the third iteration of the RoHS directive. Both parts meet current environmental and hazardous substance restrictions applicable to electronic components.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on current inventory levels and procurement availability. Both parts maintain active product status and identical technical specifications.

Q: Are there any voltage or current derating considerations?

A: No derating information is provided in the technical specifications. Both parts are rated for 7.5 A at 250 V AC/DC operation. Application-specific derating should be determined by circuit design requirements and thermal environment analysis.