Equivalent & Substitute Parts for BK/C518-2-R

Part Overview

The BK/C518-2-R is a 2A 250VAC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This through-hole component features a 2AG package format (5mm x 15mm axial) and is designed for general-purpose circuit protection applications. The part maintains active product status with 830 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary component becomes unavailable or when design requirements necessitate expanded voltage or temperature specifications.

Substiute Parts

BK/C518-2-R

Eaton - Electronics DivisionIn Stock: 868BK/C518-2-R Datasheet

Current PartRFQ

0224002.MXP

Littelfuse Inc.In Stock: 19140224002.MXP Datasheet

DirectRFQ

0224002.HXP

Littelfuse Inc.In Stock: 10630224002.HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/C518-2-R are classified based on strict electrical and mechanical parameter alignment:

Direct Substitutes (Functionally Equivalent): Substitute parts must satisfy all of the following criteria:

• Current Rating: 2 A (exact match)
• Voltage Rating - AC: 250 V (exact match or higher)
• Fuse Type: Cartridge, Glass (exact match)
• Response Time: Fast Blow (exact match)
• Package / Case: 2AG, 5mm x 15mm (exact match)
• Mounting Type: Through Hole (exact match)
• Breaking Capacity: 100A minimum at rated voltage

Identified Substitute Parts:

1. 0224002.MXP (Littelfuse Inc., Series 224) - Direct Manufacturer Substitute
2. 0224002.HXP (Littelfuse Inc., Series 224) - Similar Manufacturer Substitute

Both substitute parts meet all mandatory electrical and mechanical parameters. Additional capabilities (DC voltage rating, expanded temperature range, enhanced certifications) represent extended functionality beyond the base requirements.

Parameter Comparison

Engineering Selection Recommendations

Substitution Compatibility:

Both 0224002.MXP and 0224002.HXP satisfy the core electrical and mechanical requirements for direct substitution with BK/C518-2-R. All three parts share identical current ratings (2A), AC voltage ratings (250V), fuse type (cartridge glass), response time (fast blow), and package format (2AG through-hole).

Certification Alignment:

The BK/C518-2-R carries CSA and UL approvals. Both Littelfuse substitutes maintain CSA and UL certifications while adding CE and PSE approvals, providing expanded regulatory coverage. All parts comply with RoHS requirements (RoHS Compliant or ROHS3 Compliant).

Extended Capabilities:

The Littelfuse substitutes (0224002.MXP and 0224002.HXP) provide additional functionality not present in the base specification:

• DC voltage rating of 125V enables use in DC circuits
• Operating temperature range of -55°C to 125°C extends environmental applicability
• Enhanced breaking capacity for DC applications (10kA DC)

Physical Dimensions:

Minor dimensional variations exist. The Littelfuse parts measure 0.185" diameter x 0.570" length (4.70mm x 14.48mm), while the Eaton part measures 0.217" diameter x 0.598" length (5.50mm x 15.20mm). These differences remain within 2AG package tolerance specifications and do not affect through-hole mounting compatibility.

Resistance Characteristics:

DC cold resistance differs between manufacturers: Eaton BK/C518-2-R at 0.064 Ohms versus Littelfuse at 0.0497 Ohms. Melting I²t values also differ (1.9 versus 1.5), reflecting different thermal response profiles while maintaining fast-blow classification.

Frequently Asked Questions (FAQ)

Q: Can 0224002.MXP and 0224002.HXP be used interchangeably with BK/C518-2-R?

A: Yes. Both Littelfuse parts meet all mandatory electrical and mechanical parameters: 2A current rating, 250V AC voltage rating, fast-blow response, cartridge glass fuse type, and 2AG package format. Through-hole mounting compatibility is maintained. The parts are functionally equivalent for AC circuit protection applications.

Q: What is the difference between 0224002.MXP and 0224002.HXP?

A: Both parts are manufactured by Littelfuse, carry identical electrical specifications (2A, 250V AC, 125V DC), and share the same 2AG package format. They are cross-referenced as substitutes for each other. No functional difference exists between these two part numbers for standard circuit protection applications.

Q: Do the substitute parts work in DC applications?

A: The Littelfuse substitutes (0224002.MXP and 0224002.HXP) include a 125V DC rating, enabling operation in DC circuits. The original BK/C518-2-R does not specify a DC voltage rating and is rated for AC applications only. If DC circuit protection is required, the Littelfuse substitutes provide this capability.

Q: Are there temperature limitations I should consider?

A: The BK/C518-2-R does not specify an operating temperature range. The Littelfuse substitutes operate from -55°C to 125°C. If your application requires operation outside standard ambient conditions, the Littelfuse parts provide extended temperature coverage.

Q: Will the physical size difference affect my PCB layout?

A: The Littelfuse substitutes are slightly smaller (0.185" diameter x 0.570" length) compared to the Eaton part (0.217" diameter x 0.598" length). Both conform to 2AG package specifications. The smaller Littelfuse dimensions provide improved fit in space-constrained layouts while maintaining through-hole mounting compatibility.

Q: Which certifications apply to each part?

A: BK/C518-2-R carries CSA and UL approvals. Both Littelfuse substitutes (0224002.MXP and 0224002.HXP) carry CE, CSA, PSE, and UL approvals. All parts comply with RoHS environmental standards. The Littelfuse parts provide broader regulatory coverage across additional markets.

Q: What is the inventory status for each part?

A: BK/C518-2-R: 830 units in stock. 0224002.MXP: 1830 units in stock. 0224002.HXP: 975 units in stock. The Littelfuse substitutes offer higher inventory availability for immediate procurement.