Eaton BK/C515-5A Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Eaton BK/C515-5A is a 5 A, 125 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 2AG package format (5mm x 15mm). This fuse is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original part is no longer available from standard inventory channels.

Substiute Parts

BK/C515-5A

Eaton - Electronics DivisionIn Stock: 1192BK/C515-5A Datasheet

Current PartRFQ

BK/C515-5-R

Eaton - Electronics DivisionIn Stock: 1032BK/C515-5-R Datasheet

DirectRFQ

BK/C515S-5-R

Eaton - Electronics DivisionIn Stock: 734BK/C515S-5-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/C515-5A are determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Current Rating: 5 A (exact match required)
• Voltage Rating (AC): 125 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 400 A (exact match required)
• DC Cold Resistance: 0.019 Ohms (exact match required)
• Melting I²t: 354.813 (exact match required)

Mechanical Parameters:

• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 2AG, 5mm x 15mm (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Size / Dimension: 0.217" Dia x 0.598" L (5.50mm x 15.20mm) (exact match required)

Certification:

• Approval Agency: UL (exact match required)

All substitute parts listed below meet these criteria without exception.

Parameter Comparison

Engineering Selection Recommendations

BK/C515-5-R is the primary direct substitute for the obsolete BK/C515-5A. This part maintains active product status with Eaton - Electronics Division and achieves ROHS3 compliance, addressing regulatory requirements for new designs and procurement cycles. All electrical and mechanical parameters are identical to the main part.

BK/C515S-5-R is a parametric equivalent substitute with identical electrical and mechanical specifications. This part also maintains active product status and achieves RoHS compliance. Selection between BK/C515-5-R and BK/C515S-5-R depends on specific procurement requirements and supply chain availability, as both parts are functionally equivalent for circuit protection applications.

Both substitute parts are UL-approved and suitable for direct replacement in through-hole PCB applications requiring 5 A, 125 V AC/DC slow-blow fuse protection in 2AG package format.

Frequently Asked Questions (FAQ)

Q: Can BK/C515-5-R or BK/C515S-5-R be used as direct replacements for the obsolete BK/C515-5A?

A: Yes. Both substitute parts are electrically and mechanically equivalent. All critical parameters including current rating, voltage rating, response time, breaking capacity, resistance, and package dimensions are identical. Both parts are UL-approved and suitable for direct substitution in through-hole mounting applications.

Q: What is the difference between BK/C515-5-R and BK/C515S-5-R?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The primary difference is RoHS compliance status: BK/C515-5-R achieves ROHS3 compliance, while BK/C515S-5-R achieves RoHS compliance. Both maintain active product status and identical performance characteristics.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the 2AG package format with dimensions of 0.217" Dia x 0.598" L (5.50mm x 15.20mm). Through-hole mounting compatibility is identical.

Q: What is the significance of the "Slow Blow" response time?

A: Slow Blow response time indicates the fuse is designed to tolerate temporary inrush currents without nuisance operation, while still providing protection against sustained overcurrent conditions. This characteristic is identical across the main part and all substitutes.

Q: Are there any compliance differences between the main part and substitutes?

A: The main part BK/C515-5A is RoHS non-compliant. Both substitute parts achieve RoHS compliance (ROHS3 or RoHS), which may be required for new designs or procurement in regulated markets. All three parts maintain identical ECCN (EAR99) and HTSUS (8536.10.0020) classifications.

Q: What is the breaking capacity specification?

A: Breaking capacity of 400 A at rated voltage indicates the maximum fault current the fuse can safely interrupt without rupture or hazardous failure. This specification is identical across all three parts.