Littelfuse 0229007.MXP Glass Cartridge Fuse 7A 125VAC/VDC 2AG Equivalent & Substitute Parts

Part Overview

The Littelfuse 0229007.MXP is a 7A 125VAC/VDC glass cartridge fuse in 2AG package format (5mm x 15mm). This slow-blow fuse is designed for circuits requiring holder-mounted protection and is currently in active production status. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or inventory requirements necessitate alternative sourcing from qualified manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

0229007.MXP

Littelfuse Inc.In Stock: 21730229007.MXP Datasheet

Current PartRFQ

0229007.HXP

Littelfuse Inc.In Stock: 10730229007.HXP Datasheet

Parametric EquivalentRFQ

0229007.HXSP

Littelfuse Inc.In Stock: 10920229007.HXSP Datasheet

Parametric EquivalentRFQ

BK/C519-7-R

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0229007.MXP is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Current Rating: 7 A
• Voltage Rating AC: 125 V
• Voltage Rating DC: 125 V
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 400A
• Melting I²t: 464

Mechanical Parameters (Non-Negotiable):

• Fuse Type: Cartridge, Glass
• Package / Case: 2AG, 5mm x 15mm
• Mounting Type: Requires Holder

Environmental & Compliance Parameters:

• Operating Temperature Range: -55°C ~ 125°C
• DC Cold Resistance: 0.0116 Ohms
• RoHS Compliance Status

Parts are classified into two substitution categories:

Parametric Equivalents (Littelfuse 0229007.HXP, 0229007.HXSP): Identical electrical, mechanical, and environmental specifications. Same manufacturer (Littelfuse Inc.), same series (229), same product status (Active). These parts are direct functional replacements with no performance or compatibility differences.

Direct Manufacturer Equivalent (Eaton BK/C519-7-R): Meets all critical electrical and mechanical parameters. Different manufacturer (Eaton - Electronics Division) and series (C519). Dimensional tolerance variation noted (0.205" Dia x 0.571" L vs. 0.177" Dia x 0.570" L) remains within 2AG package specification. UL approval confirmed; CE, CSA, PSE certifications not specified in available data.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required): Select Littelfuse 0229007.HXP or 0229007.HXSP. Both parts are parametric equivalents with identical electrical performance, mechanical fit, and environmental ratings. All regulatory certifications (CE, CSA, PSE, UL) are equivalent. These parts are interchangeable without circuit redesign or holder modification.

For Cross-Manufacturer Substitution: The Eaton BK/C519-7-R meets all critical electrical and mechanical parameters (7A, 125VAC/VDC, slow-blow, 2AG package, 400A breaking capacity). UL approval is confirmed. However, CE, CSA, and PSE certifications are not specified in available documentation. Selection of this part requires verification that the application circuit does not mandate these specific regional certifications. Dimensional tolerance variation (0.205" Dia vs. 0.177" Dia) remains within 2AG package specification and does not affect holder compatibility.

Inventory Considerations: Current stock levels: 0229007.MXP (2109 pcs), 0229007.HXP (977 pcs), 0229007.HXSP (1028 pcs), BK/C519-7-R (609 pcs). Selection should prioritize availability against project timeline requirements.

Frequently Asked Questions (FAQ)

Q: Can 0229007.HXP and 0229007.HXSP be used interchangeably with 0229007.MXP? A: Yes. Both parts are parametric equivalents with identical current rating (7A), voltage rating (125VAC/VDC), response time (slow-blow), package format (2AG, 5mm x 15mm), breaking capacity (400A), melting I²t (464), operating temperature range (-55°C ~ 125°C), and regulatory certifications (CE, CSA, PSE, UL). No circuit modifications are required.

Q: What is the difference between the Littelfuse and Eaton fuses? A: Both meet the same electrical specifications (7A, 125VAC/VDC, slow-blow, 400A breaking capacity) and 2AG package format. The Eaton BK/C519-7-R differs in manufacturer, series designation (C519 vs. 229), and regulatory certifications. Eaton provides UL approval; CE, CSA, and PSE certifications are not documented. Dimensional tolerance is slightly different (0.205" Dia x 0.571" L vs. 0.177" Dia x 0.570" L) but remains within 2AG specification.

Q: Are all substitute parts RoHS compliant? A: Yes. Littelfuse parts (0229007.MXP, 0229007.HXP, 0229007.HXSP) are ROHS3 Compliant. The Eaton BK/C519-7-R is RoHS Compliant. Both compliance levels meet current environmental regulations.

Q: Can these fuses be used in DC circuits? A: Yes. All listed parts are rated for 125V DC operation. The 125VAC/VDC dual rating indicates suitability for both AC and DC applications within the specified voltage and current limits.

Q: What does "Requires Holder" mean? A: These are cartridge fuses that must be installed in a compatible fuse holder. They are not panel-mount or inline fuses. The 2AG package format specifies the holder type required (5mm x 15mm cartridge holder).

Q: Is the DC Cold Resistance specification important for substitution? A: Yes. The DC Cold Resistance of 0.0116 Ohms is a critical parameter for circuit performance, particularly in low-voltage DC applications where voltage drop across the fuse affects system operation. Littelfuse parts maintain this specification; Eaton specification is not documented. Verify DC cold resistance if the application is sensitive to voltage drop.

Q: Can I use a different current rating fuse as a substitute? A: No. The 7A current rating is non-negotiable for substitution. Using a different amperage rating will alter circuit protection characteristics and may result in inadequate protection or nuisance tripping. Only 7A fuses are acceptable substitutes.