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

Part Overview

The Littelfuse 0375012.H is a 12 A, 125 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 3AB and 3AG package formats. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and procurement planning. Substitute parts maintain identical electrical and mechanical specifications while offering improved availability and compliance status.

Substiute Parts

0375012.H

Littelfuse Inc.In Stock: 11830375012.H Datasheet

Current PartRFQ

0375012.HXP

Littelfuse Inc.In Stock: 19330375012.HXP Datasheet

Parametric EquivalentRFQ

0375012.MXP

Littelfuse Inc.In Stock: 7340375012.MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0375012.H are determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically for substitution validity:

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

Both substitute parts listed below meet these criteria and are manufactured by Littelfuse Inc. within the same 375 series.

Parameter Comparison

Engineering Selection Recommendations

Both 0375012.HXP and 0375012.MXP are direct parametric equivalents to the obsolete 0375012.H. Selection between these two active alternatives is based on procurement and compliance requirements:

The 0375012.HXP offers 1915 units in current inventory with ROHS3 compliance and REACH unaffected status, providing robust supply availability for immediate deployment.

The 0375012.MXP provides 696 units in inventory with identical ROHS3 compliance and REACH unaffected status, suitable for applications where secondary sourcing is required.

Both parts carry CE, CSA, and UL approvals, maintaining regulatory compliance across all specified jurisdictions. The transition from the obsolete 0375012.H to either active substitute eliminates RoHS non-compliance risk while preserving all electrical and mechanical performance characteristics.

Frequently Asked Questions (FAQ)

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

A: Yes. Both substitute parts are parametric equivalents with identical current rating (12 A), voltage rating (125 V AC), fuse type (cartridge, glass), response time (slow blow), package format (3AB, 3AG), breaking capacity (10 kA), and physical dimensions (0.275" Dia x 1.288" L). All three parts are manufactured by Littelfuse Inc. within the 375 series and carry the same regulatory approvals (CE, CSA, UL).

Q: Why is the main part 0375012.H classified as obsolete?

A: The 0375012.H is listed as obsolete in the manufacturer's product lifecycle. The active substitutes 0375012.HXP and 0375012.MXP provide continued access to equivalent functionality with improved compliance status and ongoing supply chain support.

Q: What is the difference between 0375012.HXP and 0375012.MXP?

A: Both parts are parametrically identical. The primary differences are packaging designation (both bulk) and current inventory levels. 0375012.HXP has 1915 units available, while 0375012.MXP has 696 units available. Both carry ROHS3 compliance and REACH unaffected status.

Q: Are there any compliance differences between the main part and substitutes?

A: Yes. The 0375012.H is RoHS non-compliant, while both 0375012.HXP and 0375012.MXP are ROHS3 compliant. All three parts maintain CE, CSA, and UL regulatory approvals. The substitutes also carry REACH unaffected status.

Q: Can these fuses be used in both AC and DC applications?

A: The electrical specifications indicate 125 V AC rating. The detailed description references AC/DC capability at the rated voltage. Verify application requirements against the specific voltage and current conditions of your circuit.

Q: What is the physical footprint compatibility?

A: All three parts share identical dimensions (0.275" Dia x 1.288" L or 6.99 mm x 32.72 mm) and the same 3AB, 3AG through-hole package format, ensuring direct mechanical compatibility in existing PCB layouts and fuse holders.