Equivalent & Substitute Parts for MDL-6-R

Part Overview

The MDL-6-R is a 6 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 and requires an external mounting holder. The part is currently active in production with 1030 pieces in stock. Alternative equivalent parts are available to support procurement flexibility, inventory management, and application-specific compliance requirements.

Substiute Parts

MDL-6-R

Eaton - Electronics DivisionIn Stock: 1047MDL-6-R Datasheet

Current PartRFQ

BK/MDL-6-R

Eaton - Electronics DivisionIn Stock: 3348BK/MDL-6-R Datasheet

DirectRFQ

BK/MDQ-6

Eaton - Electronics DivisionIn Stock: 1002BK/MDQ-6 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDL-6-R is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 6 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

Two substitute parts meet these criteria:

1. BK/MDL-6-R – Direct manufacturer equivalent with identical electrical and mechanical specifications. Differs in RoHS compliance status (ROHS3 Compliant vs. RoHS Compliant) and MSL rating (1 Unlimited vs. Not Applicable).

2. BK/MDQ-6 – Parametric equivalent from the MDQ series. Matches all mandatory parameters with minor variations in DC Cold Resistance (0.01715 Ohms vs. 0.022 Ohms) and approval agency certifications (CSA, UL vs. CE, CSA, UL). RoHS non-compliant status.

Parameter Comparison

Engineering Selection Recommendations

BK/MDL-6-R Selection Criteria:

• Preferred for applications requiring CE certification in addition to CSA and UL approvals
• ROHS3 compliance status suitable for European Union market applications
• Identical electrical and mechanical performance to MDL-6-R
• Higher inventory availability (3255 pieces) supports supply chain continuity
• Recommended as primary substitute for direct replacement

BK/MDQ-6 Selection Criteria:

• Suitable for applications where CE certification is not required
• Acceptable for CSA and UL certified applications only
• RoHS non-compliant status restricts use in regulated markets
• Lower DC Cold Resistance (0.01715 Ohms) may affect circuit behavior in high-impedance applications
• Secondary substitute option; selection requires confirmation of compliance requirements

Frequently Asked Questions (FAQ)

Q: Can BK/MDL-6-R be used as a direct replacement for MDL-6-R?

A: Yes. BK/MDL-6-R matches all mandatory electrical and mechanical parameters: 6 A current rating, 250 V AC voltage rating, slow-blow response, 3AB/3AG package, and 0.250" Dia x 1.250" L dimensions. Both parts are manufactured by Eaton - Electronics Division and are active products. The primary difference is RoHS compliance status (ROHS3 vs. RoHS Compliant).

Q: What is the difference between MDL-6-R and BK/MDQ-6?

A: Both parts share identical current rating (6 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package (3AB, 3AG), and dimensions (0.250" Dia x 1.250" L). The BK/MDQ-6 differs in: DC Cold Resistance (0.01715 Ohms vs. 0.022 Ohms), approval agencies (CSA, UL only vs. CE, CSA, UL), and RoHS compliance status (non-compliant vs. compliant).

Q: Are these fuses compatible with 3AB and 3AG holders?

A: Yes. All three parts (MDL-6-R, BK/MDL-6-R, and BK/MDQ-6) are specified for use in 3AB and 3AG holders. The 1/4" x 1-1/4" (6.35mm x 31.75mm) dimensions are identical across all substitute parts.

Q: Which substitute should I select for European applications?

A: BK/MDL-6-R is the appropriate choice for European applications. It carries CE certification and ROHS3 compliance status, meeting regulatory requirements for the European Union market.

Q: Does DC Cold Resistance affect fuse selection?

A: DC Cold Resistance values are provided for reference (MDL-6-R and BK/MDL-6-R: 0.022 Ohms; BK/MDQ-6: 0.01715 Ohms). Selection should be based on application circuit requirements. All three parts meet the specified breaking capacity of 200 A at rated voltage.

Q: What is the melting I²t value for MDL-6-R?

A: The melting I²t value for MDL-6-R is 37.4. This parameter is provided for MDL-6-R only; equivalent data for BK/MDL-6-R and BK/MDQ-6 was not included in the specification data.