Littelfuse 015406.3DRL Surface Mount Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 015406.3DRL is a 6.3 A, 125 V AC/DC surface mount board mount fuse designed for fast-blow protection in electronic circuits. This component is part of the OMNI-BLOK® 154L series and is actively manufactured. The fuse requires a holder for installation and is housed in a 2-SMD square end block package. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across different packaging configurations or series variants.

Substiute Parts

015406.3DRL

Littelfuse Inc.In Stock: 1140015406.3DRL Datasheet

Current PartRFQ

015406.3DR

Littelfuse Inc.In Stock: 1428015406.3DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 015406.3DRL is determined by equivalence in the following critical parameters:

• Current Rating: 6.3 A
• Voltage Rating: 125 V AC and 125 V DC
• Response Time: Fast Blow
• Mounting Type: Surface Mount with Holder
• Package Configuration: 2-SMD, Square End Block with Holder
• Breaking Capacity: 50 A
• Melting I²t: 9.17
• Physical Dimensions: 0.383" L x 0.198" W x 0.150" H
• DC Cold Resistance: 0.0096 Ohms
• Regulatory Compliance: PSE and UL approval

The substitute part 015406.3DR maintains identical electrical and mechanical specifications. The primary difference is packaging format: the main part is supplied in Tape & Reel (TR) configuration, while the substitute is available in Cut Tape (CT) & Digi-Reel® format. Both parts are from the OMNI-BLOK® series and are actively produced by Littelfuse Inc.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 015406.3DRL and 015406.3DR are active products with identical electrical and mechanical specifications. Selection between these parts is determined by packaging and supply chain requirements rather than functional performance.

The 015406.3DRL in Tape & Reel format is suitable for high-volume automated assembly operations. The 015406.3DR in Cut Tape & Digi-Reel® format accommodates lower-volume production runs and manual assembly processes.

Both parts carry PSE and UL approvals and are ROHS3 compliant, meeting regulatory requirements for industrial and consumer applications. The identical DC cold resistance, melting I²t, and breaking capacity ensure equivalent circuit protection performance in all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the 015406.3DR be used as a direct replacement for the 015406.3DRL?

A: Yes. Both parts are electrically and mechanically identical. The only difference is the packaging format. The 015406.3DR is supplied in Cut Tape & Digi-Reel® format instead of Tape & Reel.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging is optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging is designed for lower-volume applications and manual assembly processes. Both formats contain the same component.

Q: Are there any performance differences between these two part numbers?

A: No. Both parts have identical current ratings, voltage ratings, response time, breaking capacity, melting I²t, operating temperature range, and DC cold resistance.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the 015406.3DRL and 015406.3DR carry PSE and UL approvals and are ROHS3 compliant.

Q: What determines whether a fuse can be substituted for the 015406.3DRL?

A: A substitute fuse must match all critical parameters: 6.3 A current rating, 125 V AC/DC voltage rating, fast-blow response time, surface mount installation with holder, 2-SMD square end block package, 50 A breaking capacity, 9.17 melting I²t, and identical physical dimensions.

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.