Equivalent & Substitute Parts for BK/PCE-5

Part Overview

The BK/PCE-5 is a 5 A, 125 V AC / 400 V DC board mount fuse with fast blow response time, manufactured by Eaton - Electronics Division as part of the PC-Tron® series. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and design continuity. The fuse is designed for through-hole radial mounting in standard board mount applications and carries CSA and UL approvals for industrial and commercial use.

Substiute Parts

BK/PCE-5

Eaton - Electronics DivisionIn Stock: 731BK/PCE-5 Datasheet

Current PartRFQ

BK/PCE-5-R

Eaton - Electronics DivisionIn Stock: 1449BK/PCE-5-R Datasheet

DirectRFQ

PCE-5-R

Eaton - Electronics DivisionIn Stock: 1107PCE-5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete BK/PCE-5 is determined by strict equivalence across all electrical and mechanical parameters. The substitute parts BK/PCE-5-R and PCE-5-R maintain identical specifications for current rating, voltage ratings (AC and DC), response time, mounting configuration, breaking capacity, melting I²t, physical dimensions, and regulatory approvals. Both substitute parts are active products manufactured by Eaton - Electronics Division within the PC-Tron® series.

The substitution logic is based on the following critical parameters:

• Current Rating: 5 A (exact match required)
• Voltage Rating - AC: 125 V (exact match required)
• Voltage Rating - DC: 400 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Box (exact match required)
• Breaking Capacity: 10 kA AC, 4.2 kA DC (exact match required)
• Physical Dimensions: 0.300" L x 0.095" W x 0.170" H (exact match required)

Parameter Comparison

Engineering Selection Recommendations

Both BK/PCE-5-R and PCE-5-R are direct functional equivalents to the obsolete BK/PCE-5. Selection between the two substitute parts should be based on the following factors:

Product Status: Both substitute parts are active products, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Regulatory Compliance: Both substitute parts maintain CSA and UL approvals identical to the main part. Additionally, both substitute parts are ROHS3 compliant, providing enhanced environmental compliance compared to the non-compliant main part.

Packaging Configuration: BK/PCE-5-R and PCE-5-R are supplied in bulk packaging, differing from the box packaging of the main part. This distinction affects procurement quantities and storage considerations but does not impact electrical or mechanical performance.

Inventory Availability: BK/PCE-5-R provides 1425 pieces in stock, while PCE-5-R provides 1017 pieces in stock, both substantially exceeding the 668 pieces available for the obsolete main part.

For applications requiring direct replacement without design modification, either BK/PCE-5-R or PCE-5-R is suitable. The choice between them depends on procurement volume requirements and supplier inventory preferences.

Frequently Asked Questions (FAQ)

Q: Can BK/PCE-5-R or PCE-5-R be used as direct replacements for BK/PCE-5 in existing designs?

A: Yes. Both substitute parts maintain identical electrical ratings (5 A, 125 V AC, 400 V DC), response time (fast blow), breaking capacity (10 kA AC, 4.2 kA DC), and physical dimensions (0.300" L x 0.095" W x 0.170" H). Through-hole radial mounting is identical across all three parts. No circuit design modifications are required.

Q: What is the difference between BK/PCE-5-R and PCE-5-R?

A: Both parts are electrically and mechanically identical. The primary difference is the part number designation. BK/PCE-5-R includes the "BK" prefix, while PCE-5-R uses the base designation. Both are manufactured by Eaton - Electronics Division, carry identical specifications, and are ROHS3 compliant. Selection between them should be based on supplier availability and internal part numbering conventions.

Q: Does the packaging difference (box versus bulk) affect compatibility?

A: No. Packaging format affects procurement and storage logistics only. The electrical and mechanical characteristics of the fuse component itself remain unchanged. Bulk packaging for BK/PCE-5-R and PCE-5-R does not impact board-level performance or installation procedures.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both BK/PCE-5-R and PCE-5-R are ROHS3 compliant, providing improved environmental compliance compared to the obsolete BK/PCE-5, which is RoHS non-compliant. This compliance enhancement is beneficial for applications subject to environmental regulations.

Q: What is the breaking capacity, and why is it important?

A: Breaking capacity is 10 kA AC and 4.2 kA DC for all three parts. This specification defines the maximum fault current the fuse can safely interrupt without component failure or hazard. Identical breaking capacity across main and substitute parts ensures equivalent protection performance in circuit applications.

Q: Are CSA and UL approvals maintained in the substitute parts?

A: Yes. Both BK/PCE-5-R and PCE-5-R carry identical CSA and UL approvals as the main part BK/PCE-5. Regulatory certification is maintained across all three components.