Equivalent & Substitute Parts for BK/MAX-70

Part Overview

The BK/MAX-70 is a 70 A automotive fuse rated for 32 V DC operation with fast-blow response characteristics. Manufactured by Eaton - Bussmann Electrical Division, this component is designed for automotive electrical systems requiring blade-type fuse holders. The part is currently active in production with 949 units in stock. Substitute parts are identified based on matching electrical ratings, mechanical form factor, and performance specifications to ensure direct functional equivalence in automotive circuit protection applications.

Substiute Parts

BK/MAX-70

Eaton - Bussmann Electrical DivisionIn Stock: 1047BK/MAX-70 Datasheet

Current PartRFQ

MAX-70

Eaton - Bussmann Electrical DivisionIn Stock: 992MAX-70 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/MAX-70 are identified through parametric equivalence matching. The substitution criteria are based on the following key parameters:

• Current Rating: 70 A (exact match required)
• Voltage Rating (DC): 32 V (exact match required)
• Fuse Type: Automotive (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: Blade, Max (exact match required)
• Breaking Capacity @ Rated Voltage: 1 kA (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 1.150" L x 0.350" W x 0.850" H (exact match required)

Parts meeting all these criteria are considered direct parametric equivalents and may be substituted without modification to the circuit or holder assembly.

Parameter Comparison

Engineering Selection Recommendations

Both the BK/MAX-70 and MAX-70 are active production components manufactured by Eaton - Bussmann Electrical Division. The parts are electrically and mechanically identical across all critical parameters. The MAX-70 carries ROHS3 compliance certification, while the BK/MAX-70 carries RoHS compliance certification. Both parts are classified under ECCN EAR99 and HTSUS 8536.10.0040. Selection between these parts should be based on compliance requirements specific to the application and regional regulatory obligations. Both components are suitable for direct substitution in automotive circuit protection applications requiring 70 A fast-blow fuse protection at 32 V DC.

Frequently Asked Questions (FAQ)

Q: Can MAX-70 be used as a direct replacement for BK/MAX-70?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications, including current rating, voltage rating, response time, package type, and physical dimensions. No circuit or holder modifications are required.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both certifications indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current version of the directive. The difference does not affect electrical or mechanical performance and should be evaluated based on application and regional requirements.

Q: Are the physical dimensions identical between BK/MAX-70 and MAX-70?

A: Yes. Both parts have identical dimensions of 1.150" L x 0.350" W x 0.850" H (29.21 mm x 8.89 mm x 21.59 mm) and are compatible with the same blade-type fuse holders.

Q: What breaking capacity should be expected from these fuses?

A: Both BK/MAX-70 and MAX-70 have a breaking capacity of 1 kA at rated voltage (32 V DC).

Q: Are inventory levels a factor in substitution decisions?

A: Inventory levels are operational considerations but do not affect technical substitution eligibility. Both parts are in active production with comparable stock availability.