Equivalent & Substitute Parts for BK/C519-1-R Glass Cartridge Fuse

Part Overview

The BK/C519-1-R is a 1 A, 250 V AC slow blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 2AG holders and operates with a 5mm x 15mm form factor. The part maintains active product status with 940 pieces in current inventory.

Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit equivalent electrical and mechanical specifications. The substitute parts listed maintain compatibility with the same holder type and electrical ratings.

Substiute Parts

BK/C519-1-R

Eaton - Electronics DivisionIn Stock: 1045BK/C519-1-R Datasheet

Current PartRFQ

0229001.HXP

Littelfuse Inc.In Stock: 15630229001.HXP Datasheet

DirectRFQ

0229001.MXP

Littelfuse Inc.In Stock: 26360229001.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BK/C519-1-R is determined by the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 1 A
• Voltage Rating - AC: 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Slow Blow
• Package / Case: 2AG, 5mm x 15mm
• Mounting Type: Requires Holder

The substitute parts 0229001.HXP and 0229001.MXP satisfy all mandatory matching parameters. Both are manufactured by Littelfuse Inc. and are classified as 1 A, 250 V AC slow blow glass cartridge fuses in 2AG form factor.

Additional Compatibility Considerations: Both substitute parts provide DC voltage rating capability (125 V DC), which exceeds the AC-only specification of the main part. Both substitutes maintain the same breaking capacity at rated AC voltage (35 A) and hold equivalent RoHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts 0229001.HXP and 0229001.MXP are functionally equivalent to BK/C519-1-R for AC applications at 250 V and 1 A. All three parts maintain active product status and hold ROHS3 compliance with REACH unaffected designation.

The substitute parts from Littelfuse provide expanded approval agency coverage (CE, CSA, PSE, UL) compared to the main part (CSA, UL). Both substitutes include specified operating temperature range (-55°C ~ 125°C), which is not provided for the main part.

The primary electrical difference is the melting I²t value: the main part specifies 14.289 while both substitutes specify 5.64. This indicates faster thermal response in the substitute parts. DC cold resistance differs between the main part (0.14 Ohms) and substitutes (0.212 Ohms).

Selection between 0229001.HXP and 0229001.MXP is determined by inventory availability and procurement lead time, as both parts are electrically and mechanically identical.

Frequently Asked Questions (FAQ)

Q: Can 0229001.HXP or 0229001.MXP be used as direct replacements for BK/C519-1-R?

A: Yes. Both substitute parts match the mandatory electrical parameters (1 A, 250 V AC, slow blow response) and mechanical specifications (2AG, 5mm x 15mm form factor). Both are designed for use in the same holder type.

Q: What is the significance of the DC voltage rating on the substitute parts?

A: The substitute parts are rated for 125 V DC in addition to 250 V AC. The main part does not specify a DC rating. For AC-only applications, this additional DC rating does not affect compatibility.

Q: Why do the substitute parts have different melting I²t values?

A: The melting I²t value (14.289 for BK/C519-1-R versus 5.64 for both substitutes) indicates thermal response characteristics. The substitute parts exhibit faster thermal response. This parameter is provided in the specifications and must be evaluated against circuit protection requirements.

Q: Are there physical dimension differences between the main part and substitutes?

A: The main part dimensions are listed as 0.205" Dia x 0.571" L (5.20mm x 14.50mm). The substitute parts are listed as 0.177" Dia x 0.570" L (4.50mm x 14.48mm). Both fit the 2AG, 5mm x 15mm package specification and are compatible with standard 2AG holders.

Q: Which substitute part should be selected?

A: Both 0229001.HXP and 0229001.MXP are electrically and mechanically identical. Selection is based on inventory availability and procurement lead time. 0229001.MXP currently has higher inventory (2530 pcs) compared to 0229001.HXP (1480 pcs).

Q: Do all three parts hold the same regulatory approvals?

A: The main part holds CSA and UL approvals. Both substitute parts hold CE, CSA, PSE, and UL approvals. For applications requiring specific approval agencies, verify that the selected part meets all required certifications.