Littelfuse 0154007.DRTL Surface Mount Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0154007.DRTL is a 7 A, 72 V AC / 60 V DC surface mount board mount fuse in the OMNI-BLOK® 154TL series. This fuse is designed for applications requiring slow blow response characteristics and operates across a temperature range of -55°C to 125°C. The part is actively manufactured, UL-approved, and RoHS3 compliant. Substitute parts are identified when inventory constraints, lead time requirements, or design revision cycles necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

0154007.DRTL

Littelfuse Inc.In Stock: 18610154007.DRTL Datasheet

Current PartRFQ

0154007.DRT

Littelfuse Inc.In Stock: 15140154007.DRT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0154007.DRTL is determined by strict equivalence across the following critical parameters:

• Current Rating: 7 A (exact match required)
• Voltage Rating AC: 72 V (exact match required)
• Voltage Rating DC: 60 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Surface Mount, Requires Holder (exact match required)
• Package / Case: 2-SMD, Square End Block with Holder (exact match required)
• Breaking Capacity: 50 A @ Rated Voltage (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• DC Cold Resistance: 0.0105 Ohms (exact match required)
• Approval Agency: UL (exact match required)
• RoHS Compliance: RoHS3 Compliant (exact match required)

The substitute part 0154007.DRT meets all these criteria and is therefore electrically and mechanically interchangeable with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

Both the primary part number 0154007.DRTL and the substitute 0154007.DRT are actively manufactured by Littelfuse Inc. and carry identical electrical and mechanical specifications. Both parts maintain UL approval and RoHS3 compliance, ensuring regulatory conformance in applications requiring these certifications. Selection between these part numbers may be based on inventory availability, lead time, or design revision requirements, as they are functionally equivalent for all circuit protection applications within the specified voltage and current parameters.

Frequently Asked Questions (FAQ)

Q: Are the 0154007.DRTL and 0154007.DRT electrically interchangeable?

A: Yes. Both parts share identical current ratings (7 A), voltage ratings (72 V AC / 60 V DC), response characteristics (Slow Blow), breaking capacity (50 A), and DC cold resistance (0.0105 Ohms). They are electrically equivalent.

Q: Are the mechanical packages identical?

A: Yes. Both parts use the same 2-SMD, Square End Block with Holder package and require the same surface mount holder. Physical dimensions are identical at 0.383" L x 0.198" W x 0.150" H (9.73mm x 5.03mm x 3.81mm).

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

A: The series designation difference reflects internal Littelfuse product line organization. Both series maintain identical electrical and mechanical specifications for these part numbers and are functionally equivalent.

Q: Do both parts require a holder for installation?

A: Yes. Both the 0154007.DRTL and 0154007.DRT are board mount fuses that require a separate holder for surface mount installation. The holder is not included with the fuse element.

Q: Are both parts RoHS3 compliant?

A: Yes. Both parts are RoHS3 compliant and suitable for applications subject to RoHS regulations.

Q: What is the operating temperature range for these fuses?

A: Both parts operate across -55°C to 125°C, providing performance across extended industrial and commercial temperature ranges.