Equivalent & Substitute Parts for BK/GDB-V-400MA

Part Overview

The BK/GDB-V-400MA is a 400 mA, 250 V AC/DC fast-blow glass cartridge fuse in a 5mm x 20mm through-hole package manufactured by Eaton - Electronics Division. This component is classified as Active product status and is RoHS Compliant. Alternative equivalent parts are necessary to support supply chain flexibility, extended lead times, or regional availability requirements while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

BK/GDB-V-400MA

Eaton - Electronics DivisionIn Stock: 1248BK/GDB-V-400MA Datasheet

Current PartRFQ

BK/S500-V-400-R

Eaton - Electronics DivisionIn Stock: 1124BK/S500-V-400-R Datasheet

DirectRFQ

0217.400MXEP

LittelfuseIn Stock: 19760217.400MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/GDB-V-400MA is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 400 mA
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 5mm x 20mm (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 35A

Acceptable Variation Parameters:

• Melting I²t: Minor variations within thermal performance envelope
• Physical dimensions: Tolerances within standard cartridge fuse specifications
• DC Cold Resistance: Variations acceptable within normal manufacturing tolerances
• Approval Agencies: Equivalent or broader certification scope acceptable

The substitute parts BK/S500-V-400-R (Eaton) and 0217.400MXEP (Littelfuse) meet all mandatory matching criteria and are therefore direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

BK/S500-V-400-R (Eaton - Electronics Division): This substitute maintains identical electrical and mechanical specifications to the BK/GDB-V-400MA, including matching Melting I²t value of 0.18 and DC Cold Resistance of 2 Ohms. Both components are manufactured by Eaton and share the same approval agencies (UL, VDE). The BK/S500-V-400-R carries expanded certifications (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE) and is available in bulk packaging. Current inventory is 1075 pieces. This part is the preferred direct equivalent when supply continuity from a single manufacturer is required.

0217.400MXEP (Littelfuse): This substitute meets all mandatory electrical and mechanical parameters with identical current rating, voltage rating, fuse type, response time, and breaking capacity. The Littelfuse 217 series component carries broader international certifications (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE) and ROHS3 compliance. Physical dimensions show minor variation (0.228" Dia x 0.886" L versus 0.218" Dia x 0.831" L), which remains within standard cartridge fuse tolerance ranges for 5mm x 20mm packages. Melting I²t is 0.125 versus 0.18, representing faster thermal response. DC Cold Resistance is 0.277 Ohms versus 2 Ohms. Operating temperature range is specified as -55°C ~ 125°C. Current inventory is 1940 pieces. This part is suitable for applications requiring cross-manufacturer qualification or enhanced international compliance scope.

Frequently Asked Questions (FAQ)

Q: Can BK/S500-V-400-R be used as a direct replacement for BK/GDB-V-400MA in all applications?

A: Yes. Both components share identical current rating (400 mA), voltage rating (250 V AC), fuse type (Cartridge, Glass), response time (Fast Blow), package dimensions (5mm x 20mm), mounting type (Through Hole), and breaking capacity (35A). Melting I²t and DC Cold Resistance values are identical. Both are Active status products with RoHS compliance. No circuit redesign or qualification testing is required.

Q: What are the differences between the Littelfuse 0217.400MXEP and the Eaton parts?

A: The 0217.400MXEP maintains electrical equivalence across all mandatory parameters. Physical dimensions show minor variation within standard tolerance: 5.80mm diameter and 22.50mm length versus 5.54mm and 21.10mm for Eaton parts. Melting I²t is 0.125 (faster response) versus 0.18. DC Cold Resistance is 0.277 Ohms versus 2 Ohms. Operating temperature range is specified (-55°C ~ 125°C) for the Littelfuse part. Certifications are broader (includes CE, K-MARK). These variations do not affect functional substitution in standard 5mm x 20mm cartridge fuse applications.

Q: Are the physical dimension differences between parts significant?

A: The Littelfuse 0217.400MXEP has slightly larger diameter (5.80mm versus 5.54mm) and length (22.50mm versus 21.10mm). These differences remain within standard manufacturing tolerances for 5mm x 20mm cartridge fuses and do not prevent mechanical fit in standard fuse holders designed for this package class. Verify fuse holder specifications if tight mechanical tolerances are critical to your application.

Q: Which substitute part should be selected for international applications?

A: The Littelfuse 0217.400MXEP carries the broadest international certification scope (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE) and ROHS3 compliance, making it suitable for global supply chains. The Eaton BK/S500-V-400-R carries expanded certifications (BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE) and is also suitable for international use. Selection depends on regional regulatory requirements and customer qualification preferences.

Q: Can these parts be used interchangeably in the same circuit board design?

A: Yes, for standard through-hole fuse holder applications. All three parts are through-hole mounted in 5mm x 20mm packages. The minor physical dimension variations of the Littelfuse part remain within standard fuse holder tolerances. Verify that your specific fuse holder design accommodates the dimensional range of all three parts if cross-sourcing is planned.