Littelfuse 23011600021 Ceramic Fuse 1.6A 250VAC 5x20mm - Equivalent & Substitute Parts

Part Overview

The Littelfuse 23011600021 is a ceramic cartridge fuse rated at 1.6A, 250VAC, with a 5x20mm form factor. This fast-blow fuse is designed for applications requiring overcurrent protection in AC/DC circuits and is part of the 230 series. The part is currently active in production with 1112 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, enabling direct replacement in holder-based fuse applications.

Substiute Parts

23011600021

Littelfuse Inc.In Stock: 120423011600021 Datasheet

Current PartRFQ

0034.0903

SCHURTER Inc.In Stock: 14400034.0903 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 23011600021 is determined by the following critical parameters:

• Current Rating: Must be 1.6 A
• Voltage Rating (AC): Must be 250 V or higher
• Fuse Type: Must be Cartridge, Ceramic
• Package / Case: Must be 5mm x 20mm
• Response Time: Must be Fast Blow
• Mounting Type: Must require holder-based installation

The SCHURTER Inc. 0034.0903 meets all substitution criteria. Both parts share identical current and voltage ratings, ceramic cartridge construction, fast-blow response characteristics, and 5x20mm mechanical dimensions compatible with standard fuse holders.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 23011600021 and SCHURTER 0034.0903 are active production parts with equivalent electrical performance for 1.6A, 250VAC applications. The SCHURTER substitute offers ROHS3 compliance, whereas the Littelfuse original is RoHS non-compliant. The SCHURTER part provides a wider operating temperature range (-40°C to 85°C versus -25°C to 70°C) and higher breaking capacity (1.5 kA versus 1 kA). Both parts are mechanically compatible with standard 5x20mm fuse holders. Selection between these parts should be based on regulatory compliance requirements and environmental operating conditions specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.0903 directly replace the Littelfuse 23011600021?

A: Yes. Both parts share identical current ratings (1.6A), voltage ratings (250VAC), fuse type (ceramic cartridge), response time (fast-blow), and mechanical form factor (5x20mm). Both require holder-based mounting and are compatible with standard fuse holders designed for this package size.

Q: What are the dimensional differences between these parts?

A: The Littelfuse part measures 0.205" diameter x 0.787" length (5.20mm x 20.00mm). The SCHURTER part measures 0.201" diameter x 0.787" length (5.10mm x 20.00mm). The 0.1mm diameter difference is within standard mechanical tolerances for 5x20mm fuse cartridges and does not affect holder compatibility.

Q: Does the higher breaking capacity of the SCHURTER part affect compatibility?

A: No. Breaking capacity (1.5 kA for SCHURTER versus 1 kA for Littelfuse) indicates the maximum fault current the fuse can safely interrupt. A higher breaking capacity does not compromise compatibility and may provide additional safety margin in high-fault-current environments.

Q: What is the significance of RoHS compliance in this substitution?

A: The SCHURTER 0034.0903 is ROHS3 compliant, while the Littelfuse 23011600021 is RoHS non-compliant. RoHS compliance is a regulatory requirement in many markets. If your application or end-market requires RoHS-compliant components, the SCHURTER substitute is the appropriate choice.

Q: Are there temperature range considerations for substitution?

A: The SCHURTER part operates across -40°C to 85°C, while the Littelfuse part operates across -25°C to 70°C. If your application requires operation below -25°C or above 70°C, the SCHURTER substitute provides extended temperature coverage.