Littelfuse 04450705H Fuse Holder Cartridge - Equivalent & Substitute Parts

Part Overview

The Littelfuse 04450705H is a cartridge fuse holder designed for 5mm x 20mm fuses. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing system maintenance and new designs. The part functions as a circuit protection interface, holding standard cartridge fuses in electrical assemblies.

Substiute Parts

04450705H

Littelfuse Inc.In Stock: 100604450705H Datasheet

Current PartRFQ

85000001009

Littelfuse Inc.In Stock: 186785000001009 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 85000001009 qualifies as a direct substitute based on the following critical parameters:

• Fuse Size Compatibility: Both parts accommodate 5mm x 20mm cartridge fuses, ensuring mechanical and electrical fit
• Fuse Type: Both are cartridge-type holders
• Manufacturer Consistency: Both manufactured by Littelfuse Inc., ensuring design and quality alignment
• Functional Category: Both serve as fuse holder cartridges for circuit protection applications

The 85000001009 represents an active product with enhanced specifications including defined voltage rating (250V), current rating (10A), and modern RoHS3 compliance, making it suitable for applications where the obsolete 04450705H is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 85000001009 is the designated manufacturer substitute for the obsolete 04450705H. Selection of this alternative is based on:

• Mechanical Compatibility: Identical fuse size (5mm x 20mm) ensures direct physical fit
• Functional Equivalence: Both components serve identical circuit protection holder functions
• Product Status: The 85000001009 is an active product with current manufacturing support and availability
• Regulatory Compliance: The substitute meets ROHS3 compliance requirements, addressing modern environmental and safety standards that the original part does not meet
• Manufacturer Support: Both parts originate from Littelfuse Inc., ensuring consistent design philosophy and quality standards

For applications requiring the 04450705H, the 85000001009 provides a direct replacement path with enhanced specifications and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the 85000001009 directly replace the 04450705H in existing assemblies?

A: Yes. Both parts accommodate 5mm x 20mm cartridge fuses and are manufactured by Littelfuse Inc. The 85000001009 provides panel mount capability with defined electrical ratings (250V, 10A) and modern RoHS3 compliance.

Q: What are the key compatibility criteria for these fuse holders?

A: The primary compatibility parameter is fuse size (5mm x 20mm). Both parts are cartridge-type holders designed for this standard fuse dimension. Mounting type and termination style (solder lug for the substitute) should be verified against your specific assembly requirements.

Q: Why is the 04450705H listed as obsolete?

A: The 04450705H has been discontinued by Littelfuse Inc. The 85000001009 represents the active product line continuation with enhanced specifications and regulatory compliance.

Q: Are there electrical rating differences between these parts?

A: The 04450705H does not specify voltage or current ratings in available documentation. The 85000001009 is rated for 250V at 10A. Verify that your application requirements align with the 85000001009 specifications before implementation.

Q: What is the packaging difference?

A: The 04450705H packaging is not specified. The 85000001009 is supplied in bulk packaging, suitable for production assembly environments.