ATM-3 Equivalent & Substitute Parts

Part Overview

The ATM-3 is a 3A automotive blade fuse rated for 32V DC operation, manufactured by Eaton - Bussmann Electrical Division. This fast-blow fuse is designed for automotive electrical systems requiring miniature blade-type fuse holders. The part is currently active in production with 691 units in stock. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same product category, ensuring direct interchangeability in automotive fuse applications.

Substiute Parts

ATM-3

Eaton - Bussmann Electrical DivisionIn Stock: 758ATM-3 Datasheet

Current PartRFQ

BK/ATM-3

Eaton - Bussmann Electrical DivisionIn Stock: 3244BK/ATM-3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ATM-3 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part BK/ATM-3 maintains identical specifications in the following key areas:

• Current Rating: 3 A
• Voltage Rating - DC: 32 V
• Fuse Type: Automotive
• Response Time: Fast Blow
• Package / Case: Blade, Miniature
• Breaking Capacity @ Rated Voltage: 1kA
• Physical Dimensions: 0.430" L x 0.150" W x 0.347" H (10.92mm x 3.81mm x 8.81mm)
• Mounting Type: Requires Holder

These parameters define the functional and physical interchangeability of automotive blade fuses within this category. Parts matching all specified parameters are classified as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both ATM-3 and BK/ATM-3 are active production parts from the same manufacturer with identical electrical and mechanical specifications. The BK/ATM-3 variant demonstrates ROHS3 compliance and maintains higher inventory availability at 3148 units compared to 691 units for the ATM-3. Both parts satisfy the same automotive fuse application requirements with equivalent breaking capacity, voltage rating, and current rating. Selection between these parts is based on inventory availability and compliance requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can BK/ATM-3 be used as a direct replacement for ATM-3?

A: Yes. Both parts are parametric equivalents with identical current rating (3A), voltage rating (32V DC), fuse type (automotive), response time (fast blow), package type (blade, miniature), and physical dimensions. Direct substitution is supported in automotive fuse holder applications.

Q: What determines if a fuse is a valid substitute for the ATM-3?

A: Valid substitutes must match all critical parameters: 3A current rating, 32V DC voltage rating, fast-blow response time, miniature blade package type, 1kA breaking capacity, and identical physical dimensions (0.430" L x 0.150" W x 0.347" H). Deviation in any parameter disqualifies substitution.

Q: Are there compliance differences between ATM-3 and BK/ATM-3?

A: The BK/ATM-3 is ROHS3 compliant, while the ATM-3 is RoHS compliant. Both meet regulatory requirements for their respective designations. Application-specific compliance requirements should determine part selection.

Q: Does the violet color have functional significance?

A: The violet color is a visual indicator of the 3A current rating in automotive fuse standards. Both substitute parts maintain this color specification for consistency with automotive electrical system conventions.

Q: What is the mounting requirement for these fuses?

A: Both ATM-3 and BK/ATM-3 require a dedicated miniature blade fuse holder for installation. These fuses are not designed for direct circuit board mounting and must be installed in appropriate automotive fuse holders rated for miniature blade fuses.