Eaton BK/GFA-1 Board Mount Fuse 1A 125VAC Equivalent & Substitute Parts

Part Overview

The Eaton BK/GFA-1 is a board mount fuse rated for 1 ampere at 125 volts AC/DC with fast blow response characteristics. This component is designed for through-hole mounting applications using a non-standard axial cartridge package. The part maintains active product status and is RoHS compliant, making it suitable for modern electronic assembly requirements. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and procurement optimization when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

BK/GFA-1

Eaton - Electronics DivisionIn Stock: 1124BK/GFA-1 Datasheet

Current PartRFQ

GFA-1

Eaton - Electronics DivisionIn Stock: 1049GFA-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Eaton BK/GFA-1 board mount fuse is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 1 A
• Voltage Rating (AC): 125 V
• Response Time: Fast Blow
• Mounting Type: Through Hole
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Package / Case: Cartridge, Non-Standard (Axial)
• Breaking Capacity @ Rated Voltage: 50 A
• Size / Dimension: 0.146" Dia x 0.299" L (3.70mm x 7.60mm)

Compliance Considerations:

• Approval Agency certifications (CSA, UL)
• RoHS compliance status

The substitute part GFA-1 (Eaton - Electronics Division) meets all mandatory electrical and mechanical parameters. However, differences exist in RoHS compliance status and approval agency certifications, which must be evaluated against specific application requirements and regulatory constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The GFA-1 substitute part is electrically and mechanically equivalent to the BK/GFA-1 across all functional parameters. Both parts are manufactured by Eaton - Electronics Division and maintain active product status.

Compliance Evaluation:

The main part BK/GFA-1 carries CSA and UL approvals with RoHS compliance. The substitute part GFA-1 carries CSA and UR approvals but is RoHS non-compliant. Selection between these parts must be based on:

1. Regulatory Requirements: Applications subject to RoHS directives or equivalent environmental regulations require the BK/GFA-1 (RoHS compliant variant).

2. Certification Requirements: Applications requiring UL certification specifically must use BK/GFA-1. Applications accepting UR certification may use GFA-1.

3. Supply Chain Constraints: When BK/GFA-1 availability is limited, GFA-1 may be considered only if regulatory and certification requirements permit.

Mechanical Compatibility:

Both parts share identical mounting type (through hole), package configuration (cartridge, non-standard axial), and physical dimensions (0.146" Dia x 0.299" L). PCB layout and footprint compatibility is assured.

Frequently Asked Questions (FAQ)

Q: Can GFA-1 be used as a direct replacement for BK/GFA-1 in all applications?

A: No. While GFA-1 is electrically and mechanically equivalent, it differs in RoHS compliance status and approval certifications. Use GFA-1 only when application requirements do not mandate RoHS compliance or UL certification.

Q: What is the difference between CSA/UL and CSA/UR approvals?

A: Both certifications validate safety compliance. UL (Underwriters Laboratories) and UR (Underwriters Laboratories of Canada) are distinct certification bodies. Applications requiring specific regional certification must match the appropriate approval agency.

Q: Are the physical dimensions identical between BK/GFA-1 and GFA-1?

A: Yes. Both parts measure 0.146" diameter by 0.299" length (3.70mm x 7.60mm). PCB footprints and mounting holes are identical.

Q: What does RoHS compliance mean for fuse selection?

A: RoHS (Restriction of Hazardous Substances) compliance restricts the use of specific hazardous materials in electrical and electronic equipment. BK/GFA-1 is RoHS compliant; GFA-1 is not. Applications subject to RoHS regulations must use BK/GFA-1.

Q: Do both parts have the same current and voltage ratings?

A: Yes. Both BK/GFA-1 and GFA-1 are rated for 1 ampere at 125 volts AC with fast blow response and 50 ampere breaking capacity at rated voltage.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. Both parts can be stored and handled without special moisture control measures.

Q: Are inventory levels a factor in substitution decisions?

A: Inventory availability may influence procurement decisions but does not affect technical substitution eligibility. Electrical and mechanical parameters, compliance status, and certifications determine substitution validity.