Equivalent & Substitute Parts for BK/C515-500MA

Part Overview

The BK/C515-500MA is a 500 mA, 250 V AC/DC slow-blow glass cartridge fuse in 2AG package format (5mm x 15mm axial). Manufactured by Eaton - Electronics Division, this component is classified as obsolete. Due to its obsolete product status, equivalent substitute parts from the active C515 series are available to maintain circuit protection functionality in applications requiring identical electrical and mechanical specifications.

Substiute Parts

BK/C515-500MA

Eaton - Electronics DivisionIn Stock: 1116BK/C515-500MA Datasheet

Current PartRFQ

BK/C515-500-R

Eaton - Electronics DivisionIn Stock: 906BK/C515-500-R Datasheet

DirectRFQ

BK/C515S-500-R

Eaton - Electronics DivisionIn Stock: 965BK/C515S-500-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete BK/C515-500MA is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish valid substitutes:

Mandatory Matching Parameters:

• Current Rating: 500 mA
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Package / Case: 2AG, 5mm x 15mm (Axial)
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 35 A
• Melting I²t: 2.28
• DC Cold Resistance: 0.54 Ohms
• Mounting Type: Through Hole
• Approval Agency: CSA, UL

All substitute parts listed below meet these exact specifications and are therefore electrically and mechanically interchangeable with the main part.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts BK/C515-500-R and BK/C515S-500-R provide complete electrical and mechanical equivalence to the obsolete BK/C515-500MA. Selection between the two active substitutes should be based on the following factors:

BK/C515-500-R: This part maintains active product status with ROHS3 compliance. It is suitable for applications where RoHS3 certification is required and represents a direct replacement path from the obsolete main part.

BK/C515S-500-R: This part also maintains active product status with RoHS compliance. Both substitute parts carry identical electrical specifications, breaking capacity, and thermal characteristics, making either suitable for direct substitution in circuit protection applications.

Both parts are manufactured by Eaton - Electronics Division and carry CSA and UL approvals, ensuring continued compliance with circuit protection standards. The choice between BK/C515-500-R and BK/C515S-500-R depends on specific regulatory requirements within the end application or system design.

Frequently Asked Questions (FAQ)

Q: Can BK/C515-500-R and BK/C515S-500-R be used interchangeably with BK/C515-500MA?

A: Yes. Both substitute parts match all mandatory electrical and mechanical parameters: 500 mA current rating, 250 V AC voltage rating, 2AG package format, slow-blow response time, 35 A breaking capacity, 2.28 melting I²t, and 0.54 Ohms DC cold resistance. They are electrically and mechanically interchangeable.

Q: What is the difference between BK/C515-500-R and BK/C515S-500-R?

A: Both parts are electrically and mechanically identical. The primary difference is RoHS compliance status: BK/C515-500-R carries ROHS3 compliance, while BK/C515S-500-R carries RoHS compliance. Both are active products from Eaton - Electronics Division.

Q: Why is the main part BK/C515-500MA classified as obsolete?

A: The BK/C515-500MA is obsolete, but equivalent active alternatives exist within the same C515 series. The substitute parts provide identical functionality and specifications for continued circuit protection in existing designs.

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

A: No. All three parts share identical dimensions: 0.217" diameter x 0.598" length (5.50mm x 15.20mm). They are fully compatible with existing through-hole mounting applications.

Q: Do the substitute parts carry the same certifications?

A: Yes. Both BK/C515-500-R and BK/C515S-500-R carry CSA and UL approvals, matching the certification profile of the main part BK/C515-500MA.

Q: What is the significance of the melting I²t value of 2.28?

A: The melting I²t of 2.28 defines the thermal energy required to melt the fuse element. This value is identical across all three parts, ensuring identical thermal response characteristics and protection behavior in circuit applications.