Equivalent & Substitute Parts for 0662004.ZRLL

Part Overview

The Littelfuse 0662004.ZRLL is a 4A 250VAC board mount radial fuse with fast blow response characteristics, designed for through-hole vertical mounting applications. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

0662004.ZRLL

Littelfuse Inc.In Stock: 8440662004.ZRLL Datasheet

Current PartRFQ

37014000000

Littelfuse Inc.In Stock: 93537014000000 Datasheet

DirectRFQ

0034.6020

SCHURTER Inc.In Stock: 17220034.6020 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0662004.ZRLL are qualified based on the following mandatory electrical and mechanical parameters:

• Current Rating: 4 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
• Breaking Capacity @ Rated Voltage: 40A
• RoHS Compliance: ROHS3 Compliant

Two active substitute parts meet these criteria: Littelfuse 37014000000 (TR5® 370 series) and SCHURTER 0034.6020 (MSF 250 series). Both maintain electrical equivalence and mechanical compatibility with the original specification.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence status of the original component.

Littelfuse 37014000000 (TR5® 370 series): This substitute maintains manufacturer continuity with the original Littelfuse design. It carries expanded approval certifications including CCC, cURus, PSE, SEMKO, and VDE, with operating temperature range of -40°C to 85°C. The melting I²t value of 6.7 represents a tighter thermal response compared to the original specification of 7.9. Packaging is available in Cut Tape format with 919 units in stock.

SCHURTER 0034.6020 (MSF 250 series): This substitute provides cross-manufacturer equivalence with identical melting I²t value of 7.9, matching the original thermal characteristics precisely. It carries cURus certification with operating temperature range of -40°C to 85°C. Packaging is available in Bulk format with 1652 units in stock, providing higher inventory availability.

Both parts satisfy all mandatory electrical and mechanical parameters. Selection between them depends on procurement requirements, certification scope, and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can 37014000000 be used as a direct replacement for 0662004.ZRLL?

A: Yes. The 37014000000 meets all mandatory electrical parameters: 4A current rating, 250V AC voltage rating, fast blow response, 40A breaking capacity, and identical radial through-hole mounting configuration. The melting I²t difference (6.7 vs 7.9) represents a faster thermal response but remains within the fast blow classification.

Q: What is the difference between the two substitute parts?

A: Both substitutes maintain electrical equivalence. The primary differences are: manufacturer (Littelfuse vs SCHURTER), melting I²t value (6.7 vs 7.9), physical height dimension (8.00mm vs 8.50mm), approval certifications, and packaging format (Cut Tape vs Bulk). The 0034.6020 provides identical thermal response to the original part.

Q: Are there packaging compatibility concerns?

A: The 37014000000 is supplied in Cut Tape packaging, while the 0034.6020 is supplied in Bulk packaging. Both maintain the same radial, can, vertical form factor and through-hole mounting footprint. Packaging selection depends on assembly process requirements and procurement volume.

Q: Do both substitutes meet RoHS compliance requirements?

A: Yes. Both the 37014000000 and 0034.6020 are ROHS3 compliant, matching the original component specification.

Q: What certifications apply to each substitute?

A: The Littelfuse 37014000000 carries CCC, cURus, PSE, SEMKO, and VDE certifications. The SCHURTER 0034.6020 carries cURus certification. Selection should align with regional regulatory requirements for the target application.