MDL-3/16-R Equivalent & Substitute Parts Reference

Part Overview

The MDL-3/16-R is a 188 mA, 250 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is designed for use in 3AB and 3AG fuse holders with 1/4" x 1-1/4" dimensions. The part maintains Active product status and is RoHS Compliant with CE, CSA, and UL approvals. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in applications where the main part becomes unavailable or when inventory optimization is required.

Substiute Parts

MDL-3/16-R

Eaton - Electronics DivisionIn Stock: 1133MDL-3/16-R Datasheet

Current PartRFQ

BK/MDL-3/16-R

Eaton - Electronics DivisionIn Stock: 1081BK/MDL-3/16-R Datasheet

DirectRFQ

0313.187HXP

Littelfuse Inc.In Stock: 7540313.187HXP Datasheet

SimilarRFQ

0313.187MXP

Littelfuse Inc.In Stock: 27330313.187MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MDL-3/16-R are classified based on strict alignment with the following critical parameters:

Direct Substitutes maintain identical electrical specifications: 188 mA current rating, 250 V AC voltage rating, slow-blow response time, and 3AB/3AG package compatibility. These parts are mechanically and electrically interchangeable without circuit modification.

Similar Substitutes operate within acceptable tolerance ranges for the application. The Littelfuse 0313.187HXP and 0313.187MXP series feature 187 mA current ratings (within 1 mA of the original specification), identical voltage ratings, matching package dimensions, and equivalent breaking capacity. These parts satisfy the same functional requirements in circuits designed for the MDL-3/16-R.

All substitute relationships are based on:

• Current rating equivalence or acceptable tolerance
• Voltage rating match (250 V AC)
• Identical fuse type (Cartridge, Glass)
• Matching response time (Slow Blow)
• Compatible package and holder requirements (3AB, 3AG, 1/4" x 1-1/4")
• Equivalent breaking capacity (35A)

Parameter Comparison

Engineering Selection Recommendations

BK/MDL-3/16-R (Eaton - Electronics Division) is the primary direct substitute for MDL-3/16-R. Both parts are manufactured by Eaton and share identical electrical and mechanical specifications. The BK/MDL-3/16-R carries ROHS3 Compliant status with MSL rating of 1 (Unlimited), providing enhanced compliance documentation. This part is suitable for direct replacement in all applications where the original MDL-3/16-R is specified.

0313.187HXP and 0313.187MXP (Littelfuse Inc.) are classified as similar substitutes. Both parts feature 187 mA current ratings, which differ by 1 mA from the original 188 mA specification. The 187 mA rating remains within acceptable tolerance for slow-blow fuse applications operating at 250 V AC with 3AB/3AG package compatibility. Both Littelfuse parts carry ROHS3 Compliant status, CE, CSA, and UL approvals, and operate across the temperature range of -55°C to 125°C. The 0313.187MXP maintains higher inventory availability (2688 Pcs) compared to 0313.187HXP (701 Pcs).

All substitute parts maintain Active product status and carry equivalent regulatory approvals (CE, CSA, UL), ensuring compliance with the same standards as the original MDL-3/16-R.

Frequently Asked Questions (FAQ)

Q: Can BK/MDL-3/16-R be used as a direct replacement for MDL-3/16-R?

A: Yes. BK/MDL-3/16-R is a direct substitute manufactured by Eaton with identical current rating (188 mA), voltage rating (250 V AC), fuse type (Cartridge, Glass), response time (Slow Blow), and package dimensions (3AB, 3AG, 1/4" x 1-1/4"). No circuit modifications are required.

Q: What is the difference between the MDL-3/16-R and the Littelfuse 0313.187HXP/0313.187MXP substitutes?

A: The primary difference is the current rating: MDL-3/16-R is rated at 188 mA, while the Littelfuse parts are rated at 187 mA. This 1 mA difference falls within acceptable tolerance for slow-blow fuse applications. All other parameters—voltage rating (250 V AC), fuse type (Cartridge, Glass), response time (Slow Blow), package (3AB, 3AG), and breaking capacity (35A)—are identical.

Q: Are the Littelfuse 0313.187HXP and 0313.187MXP interchangeable with each other?

A: Yes. Both Littelfuse parts share identical electrical specifications (187 mA, 250 V AC, Slow Blow) and mechanical compatibility (3AB, 3AG, 1/4" x 1-1/4"). The primary difference is inventory availability, with 0313.187MXP offering higher stock levels (2688 Pcs vs. 701 Pcs).

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

A: Yes. All parts listed—MDL-3/16-R, BK/MDL-3/16-R, 0313.187HXP, and 0313.187MXP—share identical package specifications (3AB, 3AG, 1/4" x 1-1/4" dimensions: 0.250" Dia x 1.250" L). They are mechanically compatible with the same fuse holder equipment.

Q: What regulatory approvals do these fuses carry?

A: All parts carry CE, CSA, and UL approvals. The BK/MDL-3/16-R and Littelfuse parts (0313.187HXP, 0313.187MXP) are ROHS3 Compliant, while the original MDL-3/16-R is RoHS Compliant. All parts are REACH Unaffected.

Q: Can I use a 187 mA fuse in a circuit designed for 188 mA?

A: The 187 mA Littelfuse parts operate within 1 mA of the original 188 mA specification. For slow-blow fuse applications, this tolerance is acceptable. However, circuit-specific requirements should be evaluated by the design engineer.