Littelfuse 0672002.DRT4P Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672002.DRT4P is a 2A 250VAC axial glass cartridge fuse designed for through-hole mounting applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement. The fast-blow response characteristic and 50A breaking capacity at rated voltage define its operational role in circuit protection applications.

Substiute Parts

0672002.DRT4P

Littelfuse Inc.In Stock: 9360672002.DRT4P Datasheet

Current PartRFQ

0874002.MRET1P

LittelfuseIn Stock: 8850874002.MRET1P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0672002.DRT4P is determined by strict equivalence across the following critical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 50 A (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Cartridge, Non-Standard (Axial) (exact match required)

The primary substitute, Littelfuse 0874002.MRET1P, meets all critical electrical parameters while differing in cartridge material composition (ceramic versus glass) and physical dimensions. These differences do not affect functional equivalence within the specified electrical operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The 0874002.MRET1P serves as the direct functional equivalent for the obsolete 0672002.DRT4P. Both components maintain identical electrical ratings (2A, 250VAC) and response characteristics (fast blow, 50A breaking capacity). The substitute part carries active product status with cULus certification, ensuring continued availability and regulatory compliance.

Physical dimension variance (0.142" vs 0.154" diameter; 0.394" vs 0.433" length) and material composition change (ceramic versus glass) do not compromise electrical performance within the specified operating parameters. The ceramic construction of the substitute provides equivalent circuit protection functionality.

Both components satisfy ROHS3 compliance and REACH unaffected status, maintaining environmental regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the 0874002.MRET1P directly replace the 0672002.DRT4P in existing designs?

A: Yes. Both components share identical current rating (2A), voltage rating (250VAC), response time (fast blow), and breaking capacity (50A). The through-hole axial mounting configuration is preserved. Physical dimension differences are minor and do not affect standard cartridge fuse holder compatibility.

Q: What is the significance of the material change from glass to ceramic?

A: The material composition change does not alter the electrical protection characteristics. Both glass and ceramic cartridge fuses operate within the same electrical envelope for this 2A 250VAC application. The ceramic construction of the substitute maintains equivalent melting characteristics and response time.

Q: Are there compliance differences between the two parts?

A: The main part carries CSA and UL approvals. The substitute carries cULus certification, which encompasses both Canadian and US regulatory requirements. Both maintain ROHS3 compliance and REACH unaffected status.

Q: Why is the 0672002.DRT4P listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 0874002.MRET1P, with active product status, represents the current production equivalent for this fuse specification.

Q: Are there inventory considerations for component selection?

A: The 0874002.MRET1P is available in active inventory (787 Pcs) with tape and reel packaging, supporting both prototype and production-volume procurement requirements.