BK/GMD-V-3A Equivalent & Substitute Parts

Part Overview

The BK/GMD-V-3A is a 3 A, 250 V AC/DC slow-blow glass cartridge fuse with a 5mm x 20mm (axial) form factor, manufactured by Eaton - Electronics Division. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and system maintenance. The fuse is designed for through-hole mounting applications requiring reliable overcurrent protection with slow-blow response characteristics.

Substiute Parts

BK/GMD-V-3A

Eaton - Electronics DivisionIn Stock: 798BK/GMD-V-3A Datasheet

Current PartRFQ

BK/GMD-V-3-R

Eaton - Electronics DivisionIn Stock: 792BK/GMD-V-3-R Datasheet

DirectRFQ

0239003.MXEP

Littelfuse Inc.In Stock: 10590239003.MXEP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/GMD-V-3A is determined by strict equivalence across the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity: 100 A (exact match required)

Two substitute parts meet these criteria:

1. BK/GMD-V-3-R (Eaton - Electronics Division): Direct manufacturer equivalent with active product status and enhanced compliance certifications.

2. 0239003.MXEP (Littelfuse Inc.): Cross-manufacturer equivalent with active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

BK/GMD-V-3-R is the primary substitute for the obsolete BK/GMD-V-3A. Both components are manufactured by Eaton - Electronics Division, ensuring design and performance continuity. The BK/GMD-V-3-R maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. Approval certifications include CSA, PSE/JET, and UL, providing expanded regulatory coverage.

0239003.MXEP (Littelfuse Inc.) serves as a secondary cross-manufacturer substitute. This component meets all critical electrical and mechanical parameters with identical current rating, voltage rating, fuse type, response time, package form factor, and breaking capacity. The 0239003.MXEP provides additional regulatory certifications (CE, KC, PSE) and an extended operating temperature range of -55°C to 125°C. The melting I²t value of 129.51 differs from the main part specification of 145, representing a minor thermal characteristic variation within the slow-blow fuse category. ROHS3 compliance is confirmed.

Both substitutes are suitable for direct replacement in applications where the BK/GMD-V-3A is currently specified, provided that the regulatory certifications and compliance requirements of the end application are satisfied.

Frequently Asked Questions (FAQ)

Q: Can BK/GMD-V-3-R be used as a direct replacement for BK/GMD-V-3A?

A: Yes. The BK/GMD-V-3-R is a direct equivalent manufactured by the same supplier (Eaton - Electronics Division) with identical electrical ratings (3 A, 250 V AC), fuse type (cartridge, glass), response time (slow blow), package dimensions (5mm x 20mm axial), and breaking capacity (100 A). The primary difference is product status: BK/GMD-V-3-R is active, while BK/GMD-V-3A is obsolete.

Q: What is the difference between BK/GMD-V-3-R and 0239003.MXEP?

A: Both parts are functionally equivalent across all critical parameters: 3 A current rating, 250 V AC voltage rating, slow-blow response, 5mm x 20mm package, and 100 A breaking capacity. The primary differences are manufacturer (Eaton vs. Littelfuse), melting I²t value (145 vs. 129.51), regulatory certifications, and operating temperature range. The 0239003.MXEP offers an extended operating temperature range of -55°C to 125°C and additional international certifications (CE, KC, PSE).

Q: Are there dimensional differences between the substitute parts?

A: Minor dimensional variations exist. The BK/GMD-V-3A and BK/GMD-V-3-R share identical dimensions (0.218" Dia x 0.831" L / 5.54mm x 21.10mm). The 0239003.MXEP has slightly different dimensions (0.217" Dia x 0.846" L / 5.50mm x 21.50mm). These variations are within standard manufacturing tolerances for 5mm x 20mm axial cartridge fuses and do not affect through-hole mounting compatibility.

Q: What is the significance of the melting I²t difference?

A: The melting I²t value characterizes the thermal energy required to melt the fuse element. The BK/GMD-V-3A and BK/GMD-V-3-R both specify 145, while the 0239003.MXEP specifies 129.51. Both values are consistent with 3 A slow-blow fuse characteristics. The difference reflects design variations between manufacturers but does not affect functional equivalence for standard overcurrent protection applications.

Q: Which substitute should be selected for new designs?

A: For new designs requiring active product status and ongoing availability, either BK/GMD-V-3-R or 0239003.MXEP is appropriate. BK/GMD-V-3-R maintains design continuity with the original Eaton product line. The 0239003.MXEP provides broader international regulatory coverage and extended operating temperature range, making it suitable for applications with wider environmental requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both BK/GMD-V-3-R and 0239003.MXEP are ROHS3 compliant. The original BK/GMD-V-3A is RoHS non-compliant. This compliance improvement in the substitute parts aligns with current environmental and regulatory standards.

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

A: Yes. All three parts (BK/GMD-V-3A, BK/GMD-V-3-R, and 0239003.MXEP) are rated for both AC and DC operation at 250 V. The specifications explicitly state "3 A 250 V AC DC Fuse Cartridge."