Equivalent & Substitute Parts for Eaton BK/PCI-5 Board Mount Fuse

Part Overview

The Eaton BK/PCI-5 is a 5 A, 125 V AC / 400 V DC board mount fuse with fast blow response time, designed for through-hole radial mounting in PC-Tron® series applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications. Substitute parts are available from the same manufacturer with current product status and improved compliance ratings.

Substiute Parts

BK/PCI-5

Eaton - Electronics DivisionIn Stock: 1182BK/PCI-5 Datasheet

Current PartRFQ

BK/PCI-5-R

Eaton - Electronics DivisionIn Stock: 816BK/PCI-5-R Datasheet

DirectRFQ

PCI-5-R

Eaton - Electronics DivisionIn Stock: 933PCI-5-R Datasheet

DirectRFQ

BK/PCD-5-R

Eaton - Electronics DivisionIn Stock: 12364BK/PCD-5-R Datasheet

Parametric EquivalentRFQ

PCD-5-R

Eaton - Electronics DivisionIn Stock: 854PCD-5-R Datasheet

Parametric EquivalentRFQ

PCG-5-R

Eaton - Electronics DivisionIn Stock: 1008PCG-5-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete BK/PCI-5 is based on strict electrical and mechanical parameter matching. All substitute parts maintain identical specifications across the following critical parameters:

• Current Rating: 5 A
• Voltage Rating: 125 V AC / 400 V DC
• Response Time: Fast Blow
• Breaking Capacity: 10 kA AC, 4.2 kA DC
• Melting I²t: 5
• Physical Dimensions: 0.350" L x 0.184" W x 0.345" H
• Mounting Configuration: Through Hole Radial, Box
• Approval Agencies: CSA, UL

All substitute parts are manufactured by Eaton - Electronics Division within the PC-Tron® series. Substitutes are classified as direct manufacturer equivalents or parametric equivalents, with all active alternatives offering improved RoHS3 compliance compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

The BK/PCI-5 is classified as obsolete and should be replaced with an active equivalent. All five substitute parts—BK/PCI-5-R, PCI-5-R, BK/PCD-5-R, PCD-5-R, and PCG-5-R—are functionally equivalent and maintain full electrical and mechanical compatibility with the original specification.

Primary Selection Criteria:

1. Product Status: All substitutes are active products with current manufacturing support, eliminating obsolescence risk.

2. Regulatory Compliance: All substitute parts are ROHS3 compliant, compared to the RoHS non-compliant status of the original BK/PCI-5. This compliance improvement is significant for applications subject to environmental regulations.

3. Certification: All substitutes retain CSA and UL approval agencies, maintaining the same safety and performance certifications as the original part.

4. Inventory Availability: BK/PCD-5-R offers the highest inventory level (12,292 pcs), followed by PCI-5-R (905 pcs) and PCG-5-R (936 pcs), providing supply chain flexibility.

5. Packaging: All substitutes are supplied in bulk packaging, consistent with standard procurement practices.

Selection between substitute parts should be based on internal part numbering conventions, existing supply chain relationships, and inventory availability within your organization.

Frequently Asked Questions (FAQ)

Q: Can BK/PCI-5-R, PCI-5-R, BK/PCD-5-R, PCD-5-R, and PCG-5-R be used interchangeably with the obsolete BK/PCI-5?

A: Yes. All five substitute parts are electrically and mechanically equivalent to the BK/PCI-5. They share identical current ratings (5 A), voltage ratings (125 V AC / 400 V DC), response time (fast blow), breaking capacity (10 kA AC / 4.2 kA DC), physical dimensions, and mounting configuration. All are approved by CSA and UL.

Q: What is the primary difference between the obsolete BK/PCI-5 and its substitutes?

A: The primary difference is product status and regulatory compliance. The BK/PCI-5 is obsolete and RoHS non-compliant. All substitutes are active products with ROHS3 compliance, ensuring continued manufacturing support and alignment with current environmental regulations.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: No. All substitute parts maintain the identical physical dimensions (0.350" L x 0.184" W x 0.345" H), package type (radial, box), and through-hole mounting configuration. Direct board-level replacement is supported without design modifications.

Q: Do all substitutes carry the same safety certifications?

A: Yes. All substitute parts are approved by CSA and UL, maintaining the same safety and performance certifications as the original BK/PCI-5.

Q: Which substitute part should be selected for new designs?

A: For new designs, any of the five active substitutes is acceptable based on internal part numbering standards and supply chain preferences. BK/PCD-5-R is recommended for applications requiring maximum inventory availability.

Q: Is REACH compliance information available for all substitutes?

A: REACH compliance information is explicitly provided for BK/PCI-5-R and BK/PCD-5-R (both REACH Unaffected). This information is not provided for PCI-5-R, PCD-5-R, or PCG-5-R in the available data.

Q: What is the melting I²t specification, and does it differ among substitutes?

A: The melting I²t specification is 5 for all parts, including the original BK/PCI-5 and all five substitutes. This parameter is identical across all equivalent parts.