Littelfuse 0375012.M Glass Cartridge Fuse 12A 125VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0375012.M is a 12A 125VAC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 3AB/3AG package format. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. Direct manufacturer equivalents are available from Littelfuse Inc. in active product status with improved compliance certifications.

Substiute Parts

0375012.M

Littelfuse Inc.In Stock: 10690375012.M Datasheet

Current PartRFQ

0375012.MXP

Littelfuse Inc.In Stock: 7340375012.MXP Datasheet

DirectRFQ

0375012.HXP

Littelfuse Inc.In Stock: 19330375012.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0375012.M is determined by strict equivalence across the following critical parameters:

• Current Rating: 12 A (exact match required)
• Voltage Rating (AC): 125 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Breaking Capacity @ Rated Voltage: 10kA (exact match required)
• Mounting Type: Through Hole (exact match required)
• Size / Dimension: 0.275" Dia x 1.288" L (6.99mm x 32.72mm) (exact match required)

All substitute parts listed below meet these criteria without deviation. Substitution is valid for direct component replacement in existing designs and new applications.

Parameter Comparison

Engineering Selection Recommendations

Both 0375012.MXP and 0375012.HXP are direct functional equivalents to the obsolete 0375012.M. Selection between these two active alternatives should be based on the following factors:

0375012.MXP is designated as a direct manufacturer substitute with bulk packaging. This part maintains full electrical and mechanical compatibility while offering ROHS3 compliance and REACH unaffected status.

0375012.HXP is designated as a parametric equivalent with bulk packaging. This part provides identical electrical and mechanical specifications, ROHS3 compliance, and REACH unaffected status, with higher inventory availability (1915 Pcs vs. 696 Pcs).

Both parts carry CE, CSA, and UL approvals consistent with the original part. For new designs or maintenance applications requiring the 0375012.M, either substitute part is electrically and mechanically interchangeable. Selection may be driven by inventory availability, supply chain considerations, or existing supplier relationships with Littelfuse Inc.

Frequently Asked Questions (FAQ)

Q: Can 0375012.MXP and 0375012.HXP be used interchangeably with 0375012.M?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current rating (12A), voltage rating (125VAC), fuse type (cartridge glass), response time (slow blow), package format (3AB/3AG), breaking capacity (10kA), and physical dimensions (0.275" Dia x 1.288" L). All three parts are approved by CE, CSA, and UL.

Q: What is the difference between a direct substitute and a parametric equivalent?

A: Both 0375012.MXP (direct substitute) and 0375012.HXP (parametric equivalent) meet all electrical and mechanical requirements for substitution. The designation reflects Littelfuse's internal classification. From an engineering standpoint, both parts are functionally identical for this application.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both 0375012.MXP and 0375012.HXP are ROHS3 compliant. The original 0375012.M is RoHS non-compliant. If RoHS compliance is a design requirement, either substitute part satisfies this criterion.

Q: Will the substitute parts fit existing PCB designs for 0375012.M?

A: Yes. The substitute parts maintain identical package format (3AB, 3AG), physical dimensions (0.275" Dia x 1.288" L / 6.99mm x 32.72mm), and through-hole mounting type. No PCB redesign is required.

Q: What is the inventory status of these substitute parts?

A: 0375012.MXP has 696 Pcs in stock. 0375012.HXP has 1915 Pcs in stock. Both are active products from Littelfuse Inc.