BK/FM09A-8AS Equivalent & Substitute Parts

Part Overview

The BK/FM09A-8AS is a government-specification fuse manufactured by Eaton - Bussmann Electrical Division. This component requires a dedicated fuse holder for installation and operates with unlimited moisture sensitivity tolerance (MSL 1). The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing system maintenance and procurement planning.

Substiute Parts

BK/FM09A-8AS

Eaton - Bussmann Electrical DivisionIn Stock: 1301BK/FM09A-8AS Datasheet

Current PartRFQ

BK/F03A-8AS

Eaton - Bussmann Electrical DivisionIn Stock: 1156BK/F03A-8AS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/FM09A-8AS is determined by the following critical parameters:

• Physical Dimensions: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Package / Case Type: 3AB, 3AG, 1/4" x 1-1/4"
• Mounting Configuration: Requires Holder
• Regulatory Classification: ECCN EAR99, HTSUS 8536.10.0040
• Functional Category: Government-specification fuse

The substitute part BK/F03A-8AS matches all critical parameters required for direct substitution. Both components share identical physical dimensions, package specifications, mounting requirements, and regulatory classifications. The primary distinction is product status: BK/F03A-8AS is active and available, whereas BK/FM09A-8AS is obsolete.

Parameter Comparison

Engineering Selection Recommendations

BK/F03A-8AS is the direct substitute for BK/FM09A-8AS based on identical physical, electrical, and regulatory parameters. The substitute part is currently in active production status with confirmed inventory availability (1113 pcs in stock). BK/F03A-8AS carries RoHS Compliance certification, providing enhanced environmental compliance compared to the obsolete original part. Both components are classified under identical ECCN and HTSUS codes, ensuring regulatory equivalence for procurement and export documentation purposes.

Frequently Asked Questions (FAQ)

Q: Can BK/F03A-8AS be used as a direct replacement for BK/FM09A-8AS?

A: Yes. Both parts share identical physical dimensions (0.250" Dia x 1.250" L), package specifications (3AB, 3AG, 1/4" x 1-1/4"), mounting requirements (Requires Holder), and regulatory classifications (ECCN EAR99, HTSUS 8536.10.0040). No mechanical or electrical modifications are required.

Q: What is the primary reason for substitution?

A: BK/FM09A-8AS is classified as obsolete. BK/F03A-8AS is the active equivalent part currently manufactured and stocked by Eaton - Bussmann Electrical Division.

Q: Are there compatibility concerns with existing fuse holders?

A: No. Both parts conform to the same 3AB and 3AG package standards with identical physical dimensions. Existing fuse holders designed for BK/FM09A-8AS will accommodate BK/F03A-8AS without modification.

Q: Does BK/F03A-8AS meet current environmental standards?

A: Yes. BK/F03A-8AS is RoHS Compliant, meeting current environmental regulations. RoHS status was not specified for the obsolete BK/FM09A-8AS.

Q: Are there differences in moisture sensitivity?

A: BK/FM09A-8AS specifies MSL 1 (Unlimited). BK/F03A-8AS lists MSL as Not Applicable, indicating no moisture sensitivity restrictions for this component type.