Equivalent & Substitute Parts for BK/PCD-5-SD

Part Overview

The BK/PCD-5-SD is a 5 A board mount fuse manufactured by Eaton - Electronics Division, rated for 125 V AC and 400 V DC operation. This component belongs to the PC-Tron® series and features fast blow response characteristics with a breaking capacity of 10 kA AC and 1 kA DC. The part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design and maintenance applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer functional compatibility within defined parameter ranges.

Substiute Parts

BK/PCD-5-SD

Eaton - Electronics DivisionIn Stock: 1028BK/PCD-5-SD Datasheet

Current PartRFQ

BK/PCD-5-R

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

DirectRFQ

BK/PCI-5-R

Eaton - Electronics DivisionIn Stock: 816BK/PCI-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

PCI-5-R

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

Parametric EquivalentRFQ

7100.1172.13

SCHURTER Inc.In Stock: 10587100.1172.13 Datasheet

SimilarRFQ

80815000000

Littelfuse Inc.In Stock: 280880815000000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute relationships for the BK/PCD-5-SD are established based on strict equivalence of the following critical parameters:

Primary Equivalence Criteria:

• 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)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
• Package / Case: Radial, Box (exact match required)
• Physical Dimensions: 0.350" L x 0.184" W x 0.345" H (exact match required)

Direct Manufacturer Equivalents (Eaton - Electronics Division): Parts BK/PCD-5-R, BK/PCI-5-R, PCD-5-R, PCG-5-R, and PCI-5-R satisfy all primary equivalence criteria. These components are manufactured by Eaton - Electronics Division and maintain identical electrical ratings, response characteristics, and physical form factors. All direct equivalents are classified as active products with ROHS3 compliance, distinguishing them from the obsolete BK/PCD-5-SD.

Secondary Substitutes (Voltage Elevation): Parts 7100.1172.13 (SCHURTER Inc.) and 80815000000 (Littelfuse Inc.) operate at elevated voltage ratings (250 V AC / 250 V DC) while maintaining the 5 A current rating, fast blow response, through hole mounting, and radial box package. These components are suitable for applications where the original 125 V AC / 400 V DC specification can accommodate higher voltage operation without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Eaton PC-Tron® Series):

For applications requiring direct functional replacement of the obsolete BK/PCD-5-SD, select from the active Eaton equivalents: BK/PCD-5-R, BK/PCI-5-R, PCD-5-R, PCG-5-R, or PCI-5-R. These parts maintain identical electrical specifications (5 A, 125 V AC, 400 V DC, fast blow) and physical form factors. All active equivalents carry ROHS3 compliance and CSA/UL approvals, meeting current regulatory requirements. The improved DC breaking capacity (4.2 kA versus 1 kA) provides enhanced performance margins without circuit modification.

Voltage-Elevated Substitutes:

When circuit design permits operation at elevated voltage ratings, 7100.1172.13 (SCHURTER, 250 V AC/DC) and 80815000000 (Littelfuse, 250 V AC/DC) provide functional alternatives. These substitutes maintain the 5 A current rating and fast blow response while offering higher voltage withstand capability. Selection between these options depends on breaking capacity requirements and packaging preferences (SCHURTER: 63 A AC; Littelfuse: 100 A AC, 10 kA DC).

Compliance Considerations:

All recommended active substitutes comply with ROHS3 regulations and carry appropriate safety certifications (CSA, UL, or cURus/cULus). The BK/PCD-5-SD's RoHS non-compliance status makes transition to compliant alternatives necessary for new designs and long-term supply chain sustainability.

Frequently Asked Questions (FAQ)

Q: Can BK/PCD-5-R directly replace BK/PCD-5-SD without circuit modification?

A: Yes. BK/PCD-5-R maintains identical electrical ratings (5 A, 125 V AC, 400 V DC), response time (fast blow), mounting type (through hole), and physical dimensions (0.350" L x 0.184" W x 0.345" H). The improved DC breaking capacity (4.2 kA versus 1 kA) represents enhanced performance. No circuit redesign is required.

Q: What is the difference between BK/PCD-5-R, BK/PCI-5-R, PCD-5-R, PCG-5-R, and PCI-5-R?

A: All five parts are manufactured by Eaton - Electronics Division and meet identical electrical and mechanical specifications for the 5 A, 125 V AC / 400 V DC fast blow fuse category. Differences exist only in product line designation and internal construction. Selection among these equivalents depends on availability, packaging preference (bulk), and supply chain requirements.

Q: Are 7100.1172.13 and 80815000000 suitable replacements for BK/PCD-5-SD?

A: These parts are functional substitutes only when circuit design accommodates the elevated voltage rating (250 V AC / 250 V DC versus 125 V AC / 400 V DC). Both maintain the 5 A current rating and fast blow response. Substitution requires verification that the higher voltage specification does not conflict with circuit protection requirements or component voltage ratings.

Q: What is the significance of the improved DC breaking capacity in active equivalents?

A: Active Eaton equivalents (BK/PCD-5-R, BK/PCI-5-R, PCD-5-R, PCG-5-R, PCI-5-R) provide 4.2 kA DC breaking capacity compared to 1 kA DC in the obsolete BK/PCD-5-SD. This improvement reflects modern fuse design standards and provides enhanced safety margins in DC circuit protection applications. The upgrade does not require circuit modification.

Q: Why is RoHS compliance important for this substitution?

A: The BK/PCD-5-SD is RoHS non-compliant, reflecting its obsolete status. All recommended active substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements. For new designs and long-term supply chain planning, RoHS-compliant alternatives are mandatory.

Q: What packaging options are available for the active equivalents?

A: Eaton active equivalents (BK/PCD-5-R, BK/PCI-5-R, PCD-5-R, PCG-5-R, PCI-5-R) are supplied in bulk packaging. SCHURTER 7100.1172.13 and Littelfuse 80815000000 are also available in bulk and cut tape (CT) packaging respectively, providing flexibility for different procurement and assembly workflows.

Q: Can physical dimensions vary among the equivalent parts?

A: No. All direct Eaton equivalents maintain identical physical dimensions: 0.350" L x 0.184" W x 0.345" H (8.89 mm x 4.67 mm x 8.76 mm). This dimensional consistency ensures direct mechanical compatibility with existing PCB layouts and mounting hardware. Voltage-elevated substitutes (SCHURTER, Littelfuse) have different dimensions and require mechanical verification before substitution.