Equivalent & Substitute Parts: BK/C515-2.25-R

Part Overview

The BK/C515-2.25-R is a 2.25 A, 250 V AC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This through-hole component is housed in a 2AG package (5mm x 15mm axial configuration) and is designed for circuit protection applications requiring moderate current ratings and slow-blow response characteristics. The part is currently active in production with 854 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part is unavailable or when supply chain optimization is required.

Substiute Parts

BK/C515-2.25-R

Eaton - Electronics DivisionIn Stock: 928BK/C515-2.25-R Datasheet

Current PartRFQ

02302.25HXP

Littelfuse Inc.In Stock: 103202302.25HXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/C515-2.25-R is determined by the following mandatory parameters:

Critical Matching Parameters:

• Current Rating: 2.25 A (exact match required)
• Voltage Rating (AC): 250 V (minimum requirement)
• Fuse Type: Cartridge, Glass (mechanical and electrical compatibility)
• Response Time: Slow Blow (circuit protection behavior)
• Mounting Type: Through Hole (assembly compatibility)

Physical Compatibility Parameters:

• Package classification must support axial through-hole mounting
• Physical dimensions must accommodate standard 2AG or equivalent cartridge holder footprints

Compliance Parameters:

• Approval agencies must include UL and/or CSA certification
• RoHS compliance status must be current (RoHS Compliant or ROHS3 Compliant)

The identified substitute part 02302.25HXP from Littelfuse Inc. meets all critical matching parameters and maintains regulatory compliance through equivalent certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: BK/C515-2.25-R (Eaton - Electronics Division)

Use the primary part when:

• Original design specifications explicitly reference Eaton C515 series
• Supply availability is confirmed (854 units in stock)
• No cost or lead-time constraints exist
• Design has been validated with this specific manufacturer

Substitute Part: 02302.25HXP (Littelfuse Inc.)

Use the substitute part when:

• Primary part is unavailable or subject to extended lead times
• Supply chain optimization requires alternative sourcing (959 units in stock)
• Application operates within AC 250 V specifications
• Physical dimensions (4.50mm x 14.50mm) are compatible with circuit board holder design
• Breaking capacity of 35 A AC is sufficient for the application
• Regulatory compliance with CSA, UL, and CE certifications is required

Compliance Verification:

Both parts hold active product status and maintain current regulatory certifications. The substitute part provides additional certifications (CE, PSE) and specifies an operating temperature range (-55°C ~ 125°C), which may be advantageous for extended temperature applications. Both parts are RoHS compliant and carry EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can the 02302.25HXP substitute directly for the BK/C515-2.25-R without circuit board modifications?

A: The substitute part matches all critical electrical parameters (2.25 A, 250 V AC, slow-blow response). However, physical dimensions differ slightly (4.50mm x 14.50mm versus 5.50mm x 15.20mm). Verify that the circuit board fuse holder accommodates the smaller diameter and length of the substitute part before installation.

Q: What is the difference in breaking capacity between these two parts?

A: The primary part (BK/C515-2.25-R) has a breaking capacity of 100 A at rated voltage. The substitute part (02302.25HXP) has a breaking capacity of 35 A AC and 10 kA DC. Select based on the maximum fault current expected in your circuit. If fault currents exceed 35 A AC, the primary part is required.

Q: Are both parts suitable for DC applications?

A: The primary part does not specify a DC voltage rating. The substitute part is rated for 125 V DC. For DC circuit protection, the substitute part provides explicit DC rating specification. Verify DC voltage requirements against the 125 V DC rating of the substitute.

Q: Do both parts meet the same regulatory standards?

A: Both parts include CSA and UL certifications. The substitute part additionally carries CE and PSE certifications. For applications requiring specific regional compliance (Europe, Japan), the substitute part provides broader certification coverage.

Q: What is the inventory status for each part?

A: The primary part (BK/C515-2.25-R) has 854 units in stock. The substitute part (02302.25HXP) has 959 units in stock. Both parts are available for immediate procurement.

Q: How do the DC cold resistance values compare?

A: The primary part has 0.057 Ohms DC cold resistance. The substitute part has 0.0567 Ohms DC cold resistance. These values are functionally equivalent for circuit design purposes.