Littelfuse 0307030.H Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0307030.H is a 30 A, 32 V AC/DC fast-blow glass cartridge fuse designed for applications requiring non-standard cartridge form factors. This component is classified as Active product status and is UL-approved for general electrical protection circuits. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in existing holder assemblies without circuit redesign.

Substiute Parts

0307030.H

Littelfuse Inc.In Stock: 7880307030.H Datasheet

Current PartRFQ

BK/SFE-30

Eaton - Electronics DivisionIn Stock: 1243BK/SFE-30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0307030.H is determined by strict equivalence across the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating: 32 V AC and 32 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: Cartridge, Non-Standard (exact match required)
• Size / Dimension: 0.250" Dia x 1.437" L (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Approval Agency: UL certification (required for safety compliance)

The Eaton - Electronics Division BK/SFE-30 meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Eaton BK/SFE-30 is a direct substitute for the Littelfuse 0307030.H based on identical electrical ratings, mechanical dimensions, and UL approval certification. Both components are classified as Active product status, ensuring continued availability and manufacturing support. The dimensional tolerance between the two parts (36.51mm vs. 36.50mm length) is within acceptable mechanical clearance for standard cartridge fuse holders. Selection between these parts may be based on inventory availability, lead time, or existing supplier relationships, as electrical and mechanical performance are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the Eaton BK/SFE-30 be used as a direct replacement for the Littelfuse 0307030.H?

A: Yes. Both components share identical current ratings (30 A), voltage ratings (32 V AC/DC), response time (Fast Blow), fuse type (Cartridge, Glass), package form (Cartridge, Non-Standard), and UL approval. Mechanical dimensions are equivalent within standard manufacturing tolerances.

Q: Are there any compatibility concerns with existing fuse holders?

A: No. Both parts require the same holder type and share identical mechanical specifications. The 0.01mm dimensional difference in length is negligible for standard cartridge fuse holder applications.

Q: What is the significance of the "Cartridge, Non-Standard" package designation?

A: This designation indicates that both fuses use a non-standard cartridge form factor and require a compatible holder assembly. Standard cartridge fuse holders designed for these dimensions will accommodate both parts without modification.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the Littelfuse 0307030.H and Eaton BK/SFE-30 carry UL approval and share identical ECCN (EAR99) and HTSUS (8536.10.0020) classifications. Both are RoHS non-compliant, indicating they may contain materials restricted under RoHS directives.

Q: What factors should determine part selection between these two equivalents?

A: Selection should be based on inventory availability, supplier lead times, packaging preferences (Littelfuse offers standard packaging; Eaton offers bulk packaging), and existing procurement relationships. Electrical and mechanical performance are equivalent.