Equivalent & Substitute Parts for BK/GMA-8A Fuse

Part Overview

The BK/GMA-8A is an 8 A, 125 V AC/DC fast-blow glass cartridge fuse in 5mm x 20mm package format manufactured by Eaton - Electronics Division. This component is classified as obsolete product status. The fuse requires a dedicated holder for installation and is designed for general-purpose circuit protection applications. Due to its obsolete classification, equivalent substitute parts with active product status are available to ensure continued component availability and supply chain continuity.

Substiute Parts

BK/GMA-8A

Eaton - Electronics DivisionIn Stock: 1209BK/GMA-8A Datasheet

Current PartRFQ

BK/GMA-8-R

Eaton - Electronics DivisionIn Stock: 3305BK/GMA-8-R Datasheet

DirectRFQ

GMA-8-R

Eaton - Electronics DivisionIn Stock: 796GMA-8-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/GMA-8A are determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 8 A
• Voltage Rating (AC): 125 V
• Fuse Type: Cartridge, Glass
• Package / Case: 5mm x 20mm
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 200 A
• Melting I²t: 280
• DC Cold Resistance: 0.009 Ohms
• Mounting Type: Requires Holder

All substitute parts listed maintain identical electrical performance characteristics and physical dimensions, ensuring direct functional replacement within existing holder assemblies. Substitution is based solely on parametric equivalence; no design modifications or holder changes are required.

Parameter Comparison

Engineering Selection Recommendations

The BK/GMA-8A is classified as obsolete. For new designs and ongoing production requirements, BK/GMA-8-R or GMA-8-R are the appropriate selections. Both substitute parts maintain identical electrical and mechanical specifications, ensuring direct functional compatibility.

BK/GMA-8-R is designated as a direct manufacturer substitute with active product status and ROHS3 compliance. GMA-8-R is a parametric equivalent with active product status and RoHS compliance. Both parts carry CSA, PSE, and UL approvals, meeting current regulatory requirements. Selection between BK/GMA-8-R and GMA-8-R should be based on packaging requirements and specific compliance certifications needed for the application.

Frequently Asked Questions (FAQ)

Q: Can BK/GMA-8-R or GMA-8-R be used as direct replacements for BK/GMA-8A?

A: Yes. All three part numbers are electrically and mechanically equivalent. They share identical current ratings (8 A), voltage ratings (125 V AC), fuse type (cartridge, glass), package dimensions (5mm x 20mm), response time (fast blow), breaking capacity (200 A), and DC cold resistance (0.009 Ohms). No circuit modifications or holder changes are required.

Q: What is the difference between BK/GMA-8-R and GMA-8-R?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The primary differences are packaging designation and specific approval agency certifications. BK/GMA-8-R carries CSA, PSE, and UL approvals with ROHS3 compliance. GMA-8-R carries CSA, PSE, and UL approvals with RoHS compliance. Selection depends on packaging requirements and specific regulatory certifications required for the application.

Q: Why is BK/GMA-8A classified as obsolete?

A: BK/GMA-8A has reached end-of-life status. Active substitute parts BK/GMA-8-R and GMA-8-R are available with identical performance characteristics and improved compliance status.

Q: Are there any compatibility issues when substituting these fuses?

A: No compatibility issues exist. All parts require the same 5mm x 20mm holder assembly. Electrical performance, breaking capacity, and thermal characteristics are identical across all three part numbers.

Q: What are the approval agencies for each part?

A: BK/GMA-8A carries CCC, CSA, MITI, and UL approvals. BK/GMA-8-R and GMA-8-R carry CSA, PSE, and UL approvals. Current designs should utilize parts with active approval status.