Equivalent & Substitute Parts for 0662002.ZRLL

Part Overview

The 0662002.ZRLL is a 2A 250VAC board mount radial fuse manufactured by Littelfuse Inc. as part of the LT-5™ 662 series. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The part operates as a fast-blow fuse in through-hole radial configuration, suitable for PCB-mounted applications requiring AC/DC voltage protection at 250V nominal.

Substiute Parts

0662002.ZRLL

Littelfuse Inc.In Stock: 10660662002.ZRLL Datasheet

Current PartRFQ

37012000000

Littelfuse Inc.In Stock: 931037012000000 Datasheet

DirectRFQ

0034.6017

SCHURTER Inc.In Stock: 40050034.6017 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0662002.ZRLL is determined by strict equivalence across the following parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Mounting Type: Through Hole
• Package / Case: Radial, Can, Vertical
• Response Time: Fast Blow
• RoHS Compliance: ROHS3 Compliant

Two active substitute parts meet these criteria: 37012000000 (Littelfuse Inc., TR5® 370 series) and 0034.6017 (SCHURTER Inc., MSF 250 series). Both parts maintain identical electrical ratings and mechanical form factors while offering improved availability and active product status.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with ROHS3 compliance and established regulatory approvals. The 37012000000 (Littelfuse TR5® 370) offers higher breaking capacity (50A versus 35A) and lower melting I²t (0.98 versus 1.33), providing enhanced protection characteristics. The 0034.6017 (SCHURTER MSF 250) maintains identical breaking capacity and melting I²t specifications to the original part, with minimal dimensional variation in height (8.50mm versus 8.45mm).

Selection between substitutes depends on circuit protection requirements. Applications requiring higher fault current interruption capability should specify 37012000000. Applications prioritizing electrical parameter equivalence should specify 0034.6017. Both parts accommodate standard through-hole PCB mounting and maintain compatibility with radial lead spacing.

Frequently Asked Questions (FAQ)

Q: Can 37012000000 and 0034.6017 be used interchangeably with 0662002.ZRLL?

A: Both parts meet the core substitution criteria: 2A current rating, 250V AC voltage rating, fast-blow response, through-hole radial mounting, and ROHS3 compliance. Dimensional variations are within typical PCB layout tolerances for radial lead components.

Q: What is the significance of the different melting I²t values?

A: Melting I²t defines the thermal energy required to melt the fuse element. The 37012000000 (0.98) responds faster to overcurrent than the original part (1.33), while the 0034.6017 (1.3) provides near-equivalent thermal response. Circuit design must accommodate these differences if precise thermal coordination is required.

Q: Why does 37012000000 have higher breaking capacity?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The 37012000000 (50A) provides greater margin than the original part (35A), offering enhanced protection in high-fault-current environments. The 0034.6017 maintains the original 35A specification.

Q: Are there packaging differences between these parts?

A: The 0662002.ZRLL is supplied in standard packaging. The 37012000000 is available in Cut Tape (CT) format, while the 0034.6017 is supplied in Bulk. Packaging selection depends on procurement volume and assembly process requirements.

Q: What regulatory approvals apply to each substitute?

A: The 0662002.ZRLL carries CSA, SEMKO, UL, and VDE approvals. The 37012000000 adds CCC and PSE certifications. The 0034.6017 includes CCC certification. All three parts meet VDE and SEMKO standards, ensuring compliance with international electrical safety requirements.