Littelfuse 0154.375DRTL Surface Mount Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0154.375DRTL is an active, UL-approved surface mount board mount fuse rated at 375 mA with 125 V AC/DC voltage rating. This slow blow fuse is designed for applications requiring board-level protection in compact form factors. The part is packaged in Tape & Reel (TR) format with 2-SMD square end block configuration and requires a holder for installation. Finding equivalent or substitute parts may be necessary due to inventory availability, packaging preferences, or supply chain considerations while maintaining identical electrical and mechanical performance.

Substiute Parts

0154.375DRTL

Littelfuse Inc.In Stock: 9350154.375DRTL Datasheet

Current PartRFQ

0154.375DRT

Littelfuse Inc.In Stock: 20680154.375DRT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0154.375DRT qualifies as a parametric equivalent substitute for the 0154.375DRTL based on identical electrical and mechanical specifications. Both parts share the same current rating (375 mA), voltage ratings (125 V AC/DC), response time (Slow Blow), package configuration (2-SMD, Square End Block with Holder), breaking capacity (50A), melting I²t (0.101), operating temperature range (-55°C ~ 125°C), and DC cold resistance (1.2 Ohms). The primary difference between these parts is packaging format: the 0154.375DRTL is supplied in Tape & Reel (TR) format, while the 0154.375DRT is available in Cut Tape (CT) & Digi-Reel® format. Both parts are manufactured by Littelfuse Inc., carry active product status, maintain UL approval, and comply with ROHS3 and REACH requirements. The substitution is valid for applications where packaging format flexibility is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Both the 0154.375DRTL and 0154.375DRT are active products with identical electrical and mechanical specifications, making them direct substitutes from a functional perspective. Selection between these parts should be based on packaging requirements and supply chain availability. The 0154.375DRTL in Tape & Reel format is suitable for high-volume automated assembly operations, while the 0154.375DRT in Cut Tape & Digi-Reel® format provides flexibility for lower-volume or mixed-component applications. Both parts maintain UL approval, ROHS3 compliance, and REACH unaffected status, ensuring regulatory compatibility across applications. The identical melting I²t value (0.101), breaking capacity (50A), and DC cold resistance (1.2 Ohms) confirm electrical performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the 0154.375DRT be used as a direct replacement for the 0154.375DRTL in production assembly?

A: Yes. Both parts are electrically and mechanically identical. The 0154.375DRT can be substituted for the 0154.375DRTL provided that your assembly process accommodates the Cut Tape & Digi-Reel® packaging format instead of Tape & Reel format.

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

A: Tape & Reel (TR) packaging supplies components on a continuous reel, optimized for high-speed automated pick-and-place equipment. Cut Tape (CT) & Digi-Reel® packaging provides components in tape segments or alternative reel formats, suitable for lower-volume production or manual assembly processes. Both formats contain identical components.

Q: Are there any electrical performance differences between these substitute parts?

A: No. Both parts share identical current rating (375 mA), voltage ratings (125 V AC/DC), response time (Slow Blow), breaking capacity (50A), melting I²t (0.101), and DC cold resistance (1.2 Ohms). Electrical performance is equivalent.

Q: Do both parts require the same holder for installation?

A: Yes. Both the 0154.375DRTL and 0154.375DRT use the same 2-SMD square end block holder configuration and are mounted identically on the board.

Q: Are regulatory certifications identical between these parts?

A: Yes. Both parts carry UL approval, are ROHS3 compliant, and have REACH unaffected status. Regulatory compliance is equivalent.

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

A: Both parts operate across -55°C to 125°C, providing identical thermal performance specifications.