GDC-40MA Equivalent & Substitute Parts Reference

Part Overview

The GDC-40MA is a 40 mA, 250 V AC/DC slow-blow glass cartridge fuse in 5mm x 20mm package format manufactured by Eaton - Electronics Division. This component requires a fuse holder for installation and is classified as Active product status. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same fuse category, enabling direct functional replacement in circuit protection applications.

Substiute Parts

GDC-40MA

Eaton - Electronics DivisionIn Stock: 982GDC-40MA Datasheet

Current PartRFQ

BK/S506-40-R

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

Parametric EquivalentRFQ

S506-40-R

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

Parametric EquivalentRFQ

0218.040HXP

Littelfuse Inc.In Stock: 7600218.040HXP Datasheet

Parametric EquivalentRFQ

0218.040MXP

Littelfuse Inc.In Stock: 13310218.040MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for GDC-40MA are qualified based on strict parameter matching across the following criteria:

Critical Matching Parameters:

• Current Rating: 40 mA (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: 5mm x 20mm (exact match required)
• Breaking Capacity @ Rated Voltage: 35A (exact match required)
• Mounting Type: Requires Holder (exact match required)

All identified substitute parts maintain these electrical and mechanical parameters, ensuring functional equivalence in circuit protection applications. Variations in secondary parameters such as DC Cold Resistance, Melting I²t, and approval agency certifications do not affect substitution eligibility when primary parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and are suitable for direct replacement based on electrical and mechanical parameter equivalence. Selection between substitute options may be determined by:

Certification Coverage: BK/S506-40-R and S506-40-R carry broader approval agency certifications (BSI, CCC, IMQ, SEMKO, UL, VDE) compared to GDC-40MA (cURus, IMQ). The Littelfuse options 0218.040HXP and 0218.040MXP provide equivalent certification scope (CCC, CE, CSA, K-MARK, SEMKO, UL, VDE) with additional operating temperature specification (-55°C ~ 125°C).

Compliance Status: BK/S506-40-R, S506-40-R, 0218.040HXP, and 0218.040MXP are all ROHS3 Compliant with REACH Unaffected status. GDC-40MA does not specify RoHS or REACH compliance in provided data.

Inventory Availability: S506-40-R (1081 Pcs), 0218.040MXP (1286 Pcs), BK/S506-40-R (844 Pcs), and 0218.040HXP (720 Pcs) are all in stock.

Frequently Asked Questions (FAQ)

Q: Can GDC-40MA be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts (BK/S506-40-R, S506-40-R, 0218.040HXP, 0218.040MXP) maintain identical electrical ratings (40 mA, 250 V AC), fuse type (Cartridge, Glass), response time (Slow Blow), package dimensions (5mm x 20mm), and breaking capacity (35A). Direct functional replacement is supported.

Q: What is the difference between Eaton and Littelfuse substitute options?

A: Both manufacturers provide equivalent electrical and mechanical parameters. Eaton options (BK/S506-40-R, S506-40-R) are from the S506 series. Littelfuse options (0218.040HXP, 0218.040MXP) are from the 218 series. Littelfuse parts include specified operating temperature range (-55°C ~ 125°C), while Eaton parts do not specify this parameter in provided data.

Q: Are there differences in DC Cold Resistance between parts?

A: Yes. GDC-40MA and Eaton S506 series parts specify 13.9 Ohms DC Cold Resistance. Littelfuse 218 series parts (0218.040HXP, 0218.040MXP) specify 35.7 Ohms. This parameter difference does not affect substitution eligibility as it is not a critical matching criterion for fuse cartridge replacement.

Q: What is the Melting I²t difference between parts?

A: GDC-40MA and Eaton S506 series specify 0.0072 Melting I²t. Littelfuse 218 series parts specify 0.00536 Melting I²t. Both values fall within acceptable ranges for 40 mA slow-blow cartridge fuses and do not prevent substitution.

Q: Do all substitute parts require the same holder?

A: Yes. All parts are 5mm x 20mm cartridge fuses requiring a compatible fuse holder. Physical dimensions are identical across all options.

Q: Which substitute part has the broadest regulatory approval?

A: BK/S506-40-R, S506-40-R, 0218.040HXP, and 0218.040MXP all carry comprehensive approval agency certifications. Littelfuse parts include CE marking and CSA certification in addition to UL, VDE, and other agencies, providing broad regulatory coverage for international applications.