Littelfuse 0225.100MXP Equivalent & Substitute Parts

Part Overview

The Littelfuse 0225.100MXP is a 100 mA, 250 V AC / 125 V DC fast-blow glass cartridge fuse in 2AG package format (5mm x 15mm). This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The fuse requires a dedicated holder for installation and is designed for applications requiring fast response time protection in AC and DC circuits.

Substiute Parts

0225.100MXP

LittelfuseIn Stock: 8510225.100MXP Datasheet

Current PartRFQ

BK/C520-100-R

Eaton - Electronics DivisionIn Stock: 1770BK/C520-100-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0225.100MXP is determined by the following critical parameters:

• Current Rating: Must be 100 mA
• Voltage Rating - AC: Must be 250 V minimum
• Fuse Type: Must be Cartridge, Glass
• Package / Case: Must be 2AG, 5mm x 15mm format
• Response Time: Must be Fast Blow
• Mounting Type: Must require holder (mechanical compatibility)

The Eaton Electronics Division BK/C520-100-R meets all substitution criteria. Both parts share identical current ratings, AC voltage ratings, fuse type classification, package dimensions, and response characteristics. The substitute part is classified as active product status with current manufacturing support, making it suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The Eaton Electronics Division BK/C520-100-R is the qualified substitute for the obsolete Littelfuse 0225.100MXP based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical current ratings (100 mA), AC voltage ratings (250 V), fuse type (Cartridge, Glass), and response time (Fast Blow). The AC breaking capacity specification is identical at 35A.

Mechanical Compatibility: Both parts use the 2AG package format with 5mm x 15mm dimensions, ensuring direct physical compatibility with existing holder installations.

Regulatory Compliance: The Eaton substitute carries CSA and UL certifications, providing documented approval agency validation. Both parts maintain ROHS3 compliance status.

Product Availability: The Eaton part is classified as active product status with documented inventory availability, addressing the obsolescence status of the original Littelfuse component.

Specification Variance Consideration: The Eaton substitute does not specify DC voltage rating or operating temperature range. System designers must confirm that the 250 V AC specification is sufficient for the intended application and that operating conditions fall within standard industrial temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/C520-100-R be used as a direct replacement for the Littelfuse 0225.100MXP?

A: Yes, for AC applications at 250 V with 100 mA current requirements. Both parts share identical current ratings, voltage ratings, fuse type, package format, and response time. The substitute is mechanically and electrically compatible with existing 2AG holder installations.

Q: What is the difference in DC voltage rating between the two parts?

A: The Littelfuse 0225.100MXP specifies 125 V DC rating, while the Eaton BK/C520-100-R does not provide a DC voltage specification. For applications requiring DC circuit protection, the original Littelfuse specification should be consulted or the Eaton manufacturer should be contacted for DC rating confirmation.

Q: Are both parts physically identical in size?

A: Both parts use the 2AG package format with 5mm x 15mm dimensions. Minor dimensional variance exists: Littelfuse specifies 0.177" diameter x 0.570" length (4.50mm x 14.48mm), while Eaton specifies 0.205" diameter x 0.570" length (5.20mm x 14.48mm). Both dimensions fall within the 2AG standard and are compatible with standard 2AG holders.

Q: What certifications does the Eaton substitute carry?

A: The Eaton BK/C520-100-R carries CSA and UL certifications. Both parts maintain ROHS3 compliance status.

Q: Why is the Littelfuse part listed as obsolete?

A: Obsolete status indicates the part is no longer in active production by the manufacturer. The Eaton substitute provides equivalent functionality with active manufacturing support and current availability.

Q: Can I use this substitute in both AC and DC circuits?

A: The Eaton substitute is specified for 250 V AC applications. For DC circuit applications, the DC voltage rating must be confirmed with the Eaton manufacturer, as this specification is not provided in the available data.