Littelfuse 015401.5DRL Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 015401.5DRL is a 1.5 A, 125 V AC/DC surface mount board fuse in the OMNI-BLOK® 154L series. This fast-blow fuse is designed for board mount applications requiring a holder and is rated for breaking capacity of 50 A at rated voltage. The part is currently active in production with full PSE and UL approval certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory availability, supply chain considerations, or design flexibility within the same functional specification.

Substiute Parts

015401.5DRL

Littelfuse Inc.In Stock: 1153015401.5DRL Datasheet

Current PartRFQ

015401.5DR

Littelfuse Inc.In Stock: 1705015401.5DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 015401.5DR is identified as a parametric equivalent to the 015401.5DRL based on matching electrical and mechanical specifications. Substitution is valid when the following key parameters are identical:

• Current Rating: 1.5 A
• Voltage Rating (AC/DC): 125 V
• Response Time: Fast Blow
• Mounting Type: Requires Holder, Surface Mount
• Package / Case: 2-SMD, Square End Block with Holder
• Breaking Capacity @ Rated Voltage: 50 A
• Melting I²t: 0.853
• Operating Temperature Range: -55°C to 125°C
• DC Cold Resistance: 0.063 Ohms
• Physical Dimensions: 0.383" L x 0.198" W x 0.150" H

Both parts belong to the OMNI-BLOK® series and carry PSE and UL certifications, confirming functional equivalence for board mount fuse applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 015401.5DRL and 015401.5DR are active production parts manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain requirements rather than functional differences. Both parts carry PSE and UL certifications, confirming compliance with international safety standards. The ROHS3 compliance status is identical for both parts, ensuring environmental regulatory alignment. The 015401.5DR carries REACH Affected status, while the 015401.5DRL carries REACH Unaffected status; this distinction may be relevant for specific regulatory jurisdictions. Both parts are suitable for direct substitution in 1.5 A, 125 V AC/DC board mount fuse applications requiring fast-blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 015401.5DR be used as a direct replacement for the 015401.5DRL?

A: Yes. Both parts share identical electrical ratings (1.5 A, 125 V AC/DC), response time (fast blow), breaking capacity (50 A), melting I²t (0.853), operating temperature range (-55°C to 125°C), and physical dimensions (0.383" L x 0.198" W x 0.150" H). Both require the same holder and mounting configuration.

Q: What is the difference between the OMNI-BLOK® 154L and OMNI-BLOK® 154 series designations?

A: The series designation difference does not affect electrical or mechanical performance. Both parts meet identical functional specifications for board mount fuse applications.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry PSE and UL certifications. The 015401.5DR is REACH Affected while the 015401.5DRL is REACH Unaffected. Selection may depend on specific regulatory requirements for your application region.

Q: What is the moisture sensitivity level for these fuses?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.

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

A: Yes. Both parts are rated for 125 V AC and 125 V DC operation, making them suitable for either circuit type within the specified voltage and current parameters.