Littelfuse 0154.750DRTL Surface Mount Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0154.750DRTL is a 750 mA, 125 V AC/DC surface mount board mount fuse in the OMNI-BLOK® 154TL series. This slow blow fuse is designed for circuit protection in applications requiring a 2-SMD square end block configuration with holder. The part is actively manufactured and maintains substantial inventory availability. Equivalent substitute parts may be required due to supply chain constraints, regional availability, or design revision updates within the same product family.

Substiute Parts

0154.750DRTL

Littelfuse Inc.In Stock: 10170154.750DRTL Datasheet

Current PartRFQ

0154.750DRT

Littelfuse Inc.In Stock: 117830154.750DRT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0154.750DRTL is determined by strict equivalence across the following critical parameters:

Current Rating: 750 mA (exact match required) Voltage Rating: 125 V AC and 125 V DC (exact match required) Response Time: Slow Blow (exact match required) Fuse Type: Board Mount, Cartridge Style Excluded (exact match required) Mounting Type: Requires Holder, Surface Mount (exact match required) Package Configuration: 2-SMD, Square End Block with Holder (exact match required) Breaking Capacity: 50A @ Rated Voltage (exact match required) Melting I²t: 0.904 (exact match required) Operating Temperature Range: -55°C ~ 125°C (exact match required) DC Cold Resistance: 0.36 Ohms (exact match required)

The substitute part 0154.750DRT meets all these criteria and is classified as a parametric equivalent within the OMNI-BLOK® 154 series family.

Parameter Comparison

Engineering Selection Recommendations

Both the 0154.750DRTL and 0154.750DRT are active products manufactured by Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts should be based on availability and supply chain requirements. Both parts carry UL approval and ROHS3 compliance, meeting regulatory requirements for circuit protection applications. The parts are functionally interchangeable for all applications requiring 750 mA, 125 V AC/DC slow blow fuse protection in surface mount configurations with holder requirements.

Frequently Asked Questions (FAQ)

Q: Can the 0154.750DRT be used as a direct replacement for the 0154.750DRTL?

A: Yes. Both parts are parametric equivalents with identical current ratings, voltage ratings, response times, breaking capacity, melting I²t values, operating temperature ranges, and DC cold resistance. The parts are mechanically and electrically interchangeable.

Q: What is the difference between the 0154.750DRTL and 0154.750DRT?

A: The parts differ only in series designation (154TL versus 154T). All functional and electrical parameters are identical. Both are active products from Littelfuse Inc.

Q: Are both parts suitable for the same PCB layout and holder configuration?

A: Yes. Both parts use the identical 2-SMD, square end block with holder package configuration and require the same surface mount holder. No PCB redesign is necessary for substitution.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both parts are UL-approved, ROHS3 compliant, and REACH unaffected. They meet identical regulatory requirements for circuit protection applications.

Q: What inventory levels are available for each part?

A: The 0154.750DRTL has 925 pieces in stock. The 0154.750DRT has 11,684 pieces in stock. Selection may depend on immediate availability requirements.