Littelfuse 0318003.HXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0318003.HXP is a 3 A, 250 V AC/DC fast-blow glass cartridge fuse designed for through-hole mounting in 3AB and 3AG package formats. This fuse is actively produced and widely used in industrial and consumer electronics applications requiring overcurrent protection. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, ensuring direct functional replacement without circuit redesign.

Substiute Parts

0318003.HXP

Littelfuse Inc.In Stock: 9220318003.HXP Datasheet

Current PartRFQ

BK/AGC-V-3-R

Eaton - Electronics DivisionIn Stock: 796BK/AGC-V-3-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0318003.HXP are qualified based on the following critical parameters:

• Current Rating: Must be 3 A
• Voltage Rating (AC): Must be 250 V
• Fuse Type: Must be Cartridge, Glass
• Response Time: Must be Fast Blow
• Package / Case: Must be 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Must be Through Hole
• Breaking Capacity @ Rated Voltage: Must be 100 A
• Operating Temperature Range: Must be -55°C ~ 125°C
• Approval Agencies: Must include UL and CSA certifications

The Eaton BK/AGC-V-3-R meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0318003.HXP and Eaton BK/AGC-V-3-R are active products with ROHS3 compliance and UL/CSA certifications. The Eaton BK/AGC-V-3-R is manufacturer-recommended as an equivalent substitute. Both parts meet identical electrical specifications for current, voltage, and breaking capacity. Dimensional variations are within acceptable tolerances for 3AB/3AG package standards. The Littelfuse part carries additional approval certifications (CE, KC, PSE), which may be required for specific regional applications. Selection between these parts should be based on availability, regional compliance requirements, and application-specific certification needs.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/AGC-V-3-R be used as a direct replacement for the Littelfuse 0318003.HXP?

A: Yes. Both parts share identical electrical ratings (3 A, 250 V AC), fuse type (cartridge, glass), response time (fast blow), package format (3AB, 3AG), and breaking capacity (100 A). Both are active products with UL and CSA certifications. Dimensional differences are within standard tolerances for this package class.

Q: Are there any dimensional compatibility concerns?

A: The parts have minor dimensional variations. The Littelfuse measures 0.275" diameter × 1.288" length, while the Eaton measures 0.266" diameter × 1.292" length. Both conform to 3AB/3AG specifications and are compatible with standard through-hole fuse holders designed for this package format.

Q: What is the difference in melting I²t values between these parts?

A: The Littelfuse 0318003.HXP has a melting I²t of 14, while the Eaton BK/AGC-V-3-R has a melting I²t of 45.9. Both are fast-blow fuses with identical current and voltage ratings. The I²t value reflects thermal energy absorption characteristics; selection should be based on circuit protection requirements and application-specific thermal coordination.

Q: Which certifications does each part carry?

A: The Littelfuse 0318003.HXP carries CE, CSA, KC, PSE, and UL certifications. The Eaton BK/AGC-V-3-R carries CSA and UL certifications. For applications requiring CE, KC, or PSE compliance, verify that the selected substitute meets regional regulatory requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the Littelfuse 0318003.HXP and Eaton BK/AGC-V-3-R are ROHS3 compliant and REACH unaffected.