Equivalent & Substitute Parts for BK/GDC-40MA

Part Overview

The BK/GDC-40MA is a 40 mA, 250 V AC/DC slow-blow glass cartridge fuse in a 5mm x 20mm package manufactured by Eaton - Electronics Division. This component is classified as Active product status and requires a fuse holder for installation. Glass cartridge fuses of this specification are used in electronic equipment for circuit protection where controlled response time and precise current interruption are required. Substitute parts are identified based on matching electrical characteristics, mechanical dimensions, and approval certifications to ensure functional equivalence in circuit protection applications.

Substiute Parts

BK/GDC-40MA

Eaton - Electronics DivisionIn Stock: 1080BK/GDC-40MA Datasheet

Current PartRFQ

BK/S506-40-R

Eaton - Electronics DivisionIn Stock: 886BK/S506-40-R Datasheet

DirectRFQ

S506-40-R

Eaton - Electronics DivisionIn Stock: 1137S506-40-R Datasheet

Parametric EquivalentRFQ

0218.040HXP

Littelfuse Inc.In Stock: 7600218.040HXP Datasheet

DirectRFQ

0218.040MXP

Littelfuse Inc.In Stock: 13310218.040MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/GDC-40MA is determined by strict equivalence across the following parameters:

Critical Electrical Parameters:

• Current Rating: 40 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 35A (exact match required)

Critical Mechanical Parameters:

• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Mounting Type: Requires Holder (exact match required)

Compliance Parameters:

• RoHS Status: RoHS Compliant or ROHS3 Compliant (acceptable equivalence)
• Approval Agencies: Must include relevant certifications for target application

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the BK/GDC-40MA in applications requiring a 40 mA, 250 V AC/DC slow-blow glass cartridge fuse in a 5mm x 20mm form factor.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts (BK/S506-40-R, S506-40-R, 0218.040HXP, and 0218.040MXP) are electrically and mechanically equivalent to the BK/GDC-40MA and are suitable for direct substitution in circuit protection applications requiring a 40 mA, 250 V AC/DC slow-blow glass cartridge fuse.

Eaton - Electronics Division Parts (BK/S506-40-R and S506-40-R): These parts maintain manufacturer continuity with the original BK/GDC-40MA and carry expanded approval certifications including BSI, CCC, IMQ, SEMKO, UL, and VDE. Both parts are ROHS3 Compliant and carry identical electrical specifications.

Littelfuse Inc. Parts (0218.040HXP and 0218.040MXP): These parts provide cross-manufacturer equivalence with comprehensive approval certifications including CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE. Both are ROHS3 Compliant and rated for operating temperatures from -55°C to 125°C. The Littelfuse parts carry REACH Unaffected status.

Selection between Eaton and Littelfuse alternatives depends on supply chain requirements, approval certifications needed for the target application, and inventory availability. All parts are Active status and suitable for new designs and replacement applications.

Frequently Asked Questions (FAQ)

Q: Can BK/S506-40-R be used as a direct replacement for BK/GDC-40MA?

A: Yes. BK/S506-40-R is a direct substitute. Both parts share identical electrical ratings (40 mA, 250 V AC/DC, slow-blow response), mechanical dimensions (5mm x 20mm), and fuse type (cartridge, glass). Both require a fuse holder for installation. The primary difference is expanded approval certifications on the BK/S506-40-R.

Q: What is the difference between S506-40-R and BK/S506-40-R?

A: Both parts are manufactured by Eaton - Electronics Division and are parametrically equivalent. The designation difference reflects internal part numbering conventions. Both carry identical electrical specifications, mechanical dimensions, and approval certifications. Either part is suitable for substitution.

Q: Are Littelfuse parts (0218.040HXP and 0218.040MXP) compatible with the same fuse holder as BK/GDC-40MA?

A: Yes. All substitute parts share the identical 5mm x 20mm package dimension and cartridge glass fuse type. All require a fuse holder for installation. The Littelfuse parts are mechanically and electrically interchangeable with the Eaton parts in any application using a standard 5mm x 20mm fuse holder.

Q: What is the difference between 0218.040HXP and 0218.040MXP?

A: Both parts are manufactured by Littelfuse Inc. in the 218 series and are parametrically equivalent. Both carry identical electrical ratings (40 mA, 250 V AC/DC, slow-blow), mechanical dimensions (5mm x 20mm), and approval certifications. Both are rated for -55°C to 125°C operating temperature. Either part is suitable for substitution.

Q: Do all substitute parts have the same approval certifications?

A: No. The BK/GDC-40MA carries cULus and IMQ certifications. The Eaton S506 series parts (BK/S506-40-R and S506-40-R) carry BSI, CCC, IMQ, SEMKO, UL, and VDE certifications. The Littelfuse 218 series parts (0218.040HXP and 0218.040MXP) carry CCC, CE, CSA, K-MARK, SEMKO, UL, and VDE certifications. Selection should be based on certifications required for the target application.

Q: Are there operating temperature differences between substitute parts?

A: The BK/GDC-40MA and Eaton S506 series parts do not specify an operating temperature range. The Littelfuse 218 series parts (0218.040HXP and 0218.040MXP) are rated for -55°C to 125°C. For applications requiring specified temperature performance, the Littelfuse parts provide documented operating range.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. All parts are rated for 250 V AC/DC operation. The 40 mA current rating and slow-blow response time apply to both AC and DC applications within the 250 V rating.