BK/C519-7-R Equivalent & Substitute Parts

Part Overview

The BK/C519-7-R is a 7 A, 125 V AC/DC slow-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as Active product status and is designed for applications requiring overcurrent protection in AC and DC circuits. The fuse operates in a 2AG form factor (5mm x 15mm) and requires a compatible fuse holder for installation. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct functional replacement in circuit protection applications.

Substiute Parts

BK/C519-7-R

Eaton - Electronics DivisionIn Stock: 633BK/C519-7-R Datasheet

Current PartRFQ

0229007.HXP

Littelfuse Inc.In Stock: 10730229007.HXP Datasheet

DirectRFQ

0229007.MXP

Littelfuse Inc.In Stock: 21730229007.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/C519-7-R are qualified based on the following criteria:

Electrical Equivalence:

• Current Rating: 7 A (exact match required)
• Voltage Rating - AC: 125 V (exact match required)
• Response Time: Slow Blow (exact match required)

Mechanical Compatibility:

• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Mounting Type: Requires Holder (exact match required)

Regulatory & Compliance:

• Approval Agency: UL certification (minimum requirement)
• RoHS Status: RoHS Compliant or ROHS3 Compliant (acceptable)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute parts 0229007.HXP and 0229007.MXP, both manufactured by Littelfuse Inc., meet all substitution criteria. Both parts provide additional DC voltage rating (125 V DC) and enhanced approval certifications (CE, CSA, PSE, UL) beyond the original specification, while maintaining full compatibility with the BK/C519-7-R electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

Both Littelfuse substitute parts (0229007.HXP and 0229007.MXP) are functionally equivalent to the BK/C519-7-R for direct replacement in 7 A, 125 V AC slow-blow fuse applications. Selection between the two Littelfuse options is based on inventory availability and supply chain considerations, as both parts carry identical electrical specifications and certifications.

The Littelfuse parts provide expanded regulatory approval (CE, CSA, PSE in addition to UL) and explicit DC voltage rating (125 V DC), which may be advantageous in applications requiring multi-standard compliance or dual AC/DC operation. The specified operating temperature range (-55°C ~ 125°C) and breaking capacity (400 A) are documented for the Littelfuse substitutes, providing additional design margin information not available in the original BK/C519-7-R specification.

All three parts maintain RoHS compliance and MSL Level 1 (Unlimited) moisture sensitivity, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can 0229007.HXP and 0229007.MXP be used interchangeably with BK/C519-7-R?

A: Yes. Both Littelfuse parts meet all electrical and mechanical substitution criteria: 7 A current rating, 125 V AC voltage rating, slow-blow response time, 2AG 5mm x 15mm package, and UL approval. The parts are functionally equivalent for direct replacement.

Q: What is the difference between 0229007.HXP and 0229007.MXP?

A: Both parts are identical in electrical specifications, mechanical dimensions, and certifications. The difference lies in packaging designation (HXP vs. MXP) and inventory availability. Selection should be based on supply chain and procurement requirements.

Q: Does the BK/C519-7-R support DC voltage operation?

A: The original BK/C519-7-R specification lists 125 V AC rating only. The Littelfuse substitutes (0229007.HXP and 0229007.MXP) explicitly support 125 V DC operation, providing expanded application flexibility.

Q: Are the physical dimensions identical between all three parts?

A: The BK/C519-7-R is specified as 0.205" Dia x 0.571" L (5.20mm x 14.50mm). The Littelfuse substitutes are specified as 0.177" Dia x 0.570" L (4.50mm x 14.48mm). Both conform to the 2AG standard form factor and are mechanically compatible with standard 2AG fuse holders. Minor dimensional variations are within 2AG specification tolerances.

Q: What certifications do the substitute parts carry?

A: The Littelfuse substitutes carry CE, CSA, PSE, and UL approvals. The original BK/C519-7-R carries UL approval. All parts meet RoHS compliance requirements.

Q: Can these fuses be used in applications requiring both AC and DC operation?

A: The Littelfuse substitutes (0229007.HXP and 0229007.MXP) are rated for both 125 V AC and 125 V DC operation. The original BK/C519-7-R is specified for AC operation only. Verify application requirements before selecting a substitute.