BK/GMA-V-7A Equivalent & Substitute Parts

Part Overview

The BK/GMA-V-7A is a 7 A 125 V AC/DC fast-blow glass cartridge fuse with a 5mm x 20mm axial form factor, manufactured by Eaton - Electronics Division. This component is classified as obsolete product status. Identification of equivalent substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer available through standard distribution channels. The substitute part maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

BK/GMA-V-7A

Eaton - Electronics DivisionIn Stock: 864BK/GMA-V-7A Datasheet

Current PartRFQ

BK/GMA-V-7-R

Eaton - Electronics DivisionIn Stock: 1000BK/GMA-V-7-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/GMA-V-7A is determined by strict equivalence across the following critical parameters:

• Current Rating: 7 A
• Voltage Rating (AC): 125 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 5mm x 20mm (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 200 A
• Melting I²t: 150
• DC Cold Resistance: 0.012 Ohms
• Physical Dimensions: 0.218" Dia x 0.831" L (5.54mm x 21.10mm)

The substitute part BK/GMA-V-7-R meets all these criteria and is therefore classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The BK/GMA-V-7-R is the direct equivalent substitute for the BK/GMA-V-7A. Selection of the substitute part is supported by the following engineering factors:

Product Status: The main part BK/GMA-V-7A carries obsolete product status, indicating discontinued manufacturing and limited long-term availability. The substitute BK/GMA-V-7-R maintains active product status, ensuring continued supply and support.

Compliance Status: The substitute part achieves RoHS compliance, whereas the main part is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements in electronics manufacturing and distribution.

Certification Alignment: Both parts carry UL and CSA certifications. The substitute part includes PSE certification, providing additional regional approval coverage.

Electrical and Mechanical Equivalence: All critical electrical parameters (current rating, voltage rating, breaking capacity, melting I²t, DC cold resistance) and mechanical specifications (package dimensions, mounting type, form factor) are identical between the main part and substitute.

Inventory Availability: The substitute part demonstrates higher inventory levels (939 Pcs vs. 852 Pcs), supporting consistent supply for production requirements.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-V-7-R be used as a direct replacement for BK/GMA-V-7A in existing circuit designs?

A: Yes. The BK/GMA-V-7-R is electrically and mechanically equivalent to the BK/GMA-V-7A. All critical parameters including current rating (7 A), voltage rating (125 V AC), response time (fast blow), breaking capacity (200 A), and physical dimensions (5mm x 20mm) are identical. The substitute part is suitable for direct replacement in through-hole PCB applications.

Q: What are the key differences between these two parts?

A: The primary differences are product status and compliance. The BK/GMA-V-7A is obsolete and RoHS non-compliant, while the BK/GMA-V-7-R is active and RoHS compliant. Certification coverage differs slightly: the substitute includes PSE certification in addition to UL and CSA. Packaging is specified as bulk for the substitute part.

Q: Are there any compatibility concerns when substituting BK/GMA-V-7-R for BK/GMA-V-7A?

A: No compatibility concerns exist. Both parts share identical electrical specifications (7 A, 125 V AC, fast-blow response, 200 A breaking capacity) and mechanical form factor (5mm x 20mm axial, through-hole mounting). PCB footprints, holder compatibility, and circuit protection performance are equivalent.

Q: Why does the substitute part have different approval agencies listed?

A: The BK/GMA-V-7-R carries CSA, PSE, and UL certifications, while the BK/GMA-V-7A carries CCC, CSA, MITI, and UL certifications. Both parts maintain UL and CSA approval, which are the primary certifications for North American applications. The substitute part's PSE certification provides additional approval for Japanese markets.

Q: Is the RoHS compliance difference significant for component selection?

A: RoHS compliance status reflects manufacturing process standards and material composition. The BK/GMA-V-7-R's RoHS compliance aligns with current regulatory requirements in many markets and may be required for certain end-use applications or customer specifications. The substitute part's compliance status represents an improvement over the main part.

Q: What is the melting I²t value and why is it important?

A: The melting I²t value of 150 represents the thermal energy required to melt the fuse element. This parameter is identical for both parts and determines the fuse's response characteristics under fault conditions. Equivalence in this parameter ensures identical circuit protection behavior.

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

A: The specifications indicate 125 V AC rating. The DC cold resistance value (0.012 Ohms) is provided, but DC voltage rating is not explicitly specified in the provided parameters. Component selection for DC applications should be based on application-specific requirements and the fuse holder design.