Littelfuse 0154.062DRL Surface Mount Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0154.062DRL is a 62 mA, 125 V AC/DC surface mount board mount fuse in the OMNI-BLOK® 154L series. This fast-blow fuse is designed for circuit protection in applications requiring compact, reliable overcurrent protection with a 50A breaking capacity at rated voltage. The part is actively manufactured and stocked, with UL approval and full RoHS3 compliance. Equivalent and substitute parts are identified when original stock is unavailable or when design flexibility permits selection from qualified alternatives within the same electrical and mechanical specifications.

Substiute Parts

0154.062DRL

Littelfuse Inc.In Stock: 17090154.062DRL Datasheet

Current PartRFQ

0154.062DR

Littelfuse Inc.In Stock: 211670154.062DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0154.062DR qualifies as a parametric equivalent to the 0154.062DRL based on identical electrical and mechanical specifications. Substitution is valid when the following criteria are met:

• Current Rating: 62 mA (exact match)
• Voltage Rating: 125 V AC / 125 V DC (exact match)
• Response Time: Fast Blow (exact match)
• Mounting Type: Surface Mount, Requires Holder (exact match)
• Package / Case: 2-SMD, Square End Block with Holder (exact match)
• Breaking Capacity: 50 A @ rated voltage (exact match)
• Melting I²t: 0.00019 (exact match)
• DC Cold Resistance: 5.5 Ohms (exact match)
• Operating Temperature Range: -55°C to 125°C (exact match)
• Physical Dimensions: 0.383" L x 0.198" W x 0.150" H (exact match)
• Compliance: UL approved, ROHS3 compliant (exact match)

The primary difference between these parts is the series designation (OMNI-BLOK® 154L versus OMNI-BLOK® 154) and inventory availability. Both parts are manufactured by Littelfuse Inc. and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

Both the 0154.062DRL and 0154.062DR are active products manufactured by Littelfuse Inc. with identical electrical performance, mechanical compatibility, and regulatory compliance. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

The 0154.062DR offers higher inventory availability (21,100 pieces in stock versus 1,699 pieces for the 0154.062DRL), making it the preferred choice when supply continuity is a priority. Both parts carry UL approval and ROHS3 compliance, ensuring regulatory acceptance in equivalent applications.

For applications where the original part number is specified in design documentation or procurement requirements, the 0154.062DRL remains the primary selection. The 0154.062DR serves as a direct substitute when the original part is unavailable or when design flexibility permits cross-reference selection.

Frequently Asked Questions (FAQ)

Q: Are the 0154.062DRL and 0154.062DR electrically interchangeable?

A: Yes. Both parts share identical current ratings (62 mA), voltage ratings (125 V AC/DC), response time (fast blow), breaking capacity (50 A), melting I²t (0.00019), and DC cold resistance (5.5 Ohms). They are direct electrical equivalents.

Q: Do these parts have the same physical dimensions and mounting requirements?

A: Yes. Both parts are 0.383" L x 0.198" W x 0.150" H (9.73mm x 5.03mm x 3.81mm) and use identical 2-SMD, Square End Block with Holder packaging. Both require a surface mount holder and are mechanically compatible.

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

A: The series designation difference does not affect electrical or mechanical performance. Both series maintain identical specifications for the 62 mA, 125 V rating. The distinction reflects manufacturing or product line organization within Littelfuse Inc.

Q: Are both parts RoHS3 compliant and UL approved?

A: Yes. Both the 0154.062DRL and 0154.062DR are ROHS3 compliant and carry UL approval. Both parts meet the same regulatory and environmental standards.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on availability, lead time, and supply chain strategy. The 0154.062DR offers higher stock levels, while the 0154.062DRL may be preferred if specified in existing design documentation.

Q: What is the Moisture Sensitivity Level (MSL) for these fuses?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Standard component storage practices apply.