Littelfuse 0438006.WR Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0438006.WR is a 6A board mount surface mount fuse rated for 12VAC and 24VDC applications. This component features fast-blow response characteristics and is housed in a 0603 (1608 Metric) package for PCB integration. The part is currently listed as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

0438006.WR

Littelfuse Inc.In Stock: 364040438006.WR Datasheet

Current PartRFQ

0438006.WRGT

Littelfuse Inc.In Stock: 62810438006.WRGT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0438006.WRGT qualifies as a parametric equivalent based on the following critical substitution criteria:

• Current Rating: Identical at 6 A
• Voltage Ratings: Matching 12VAC and 24VDC specifications
• Response Time: Both Fast Blow
• Package / Case: Both 0603 (1608 Metric)
• Mounting Type: Both Surface Mount
• Operating Temperature: Identical range of -55°C ~ 150°C
• Regulatory Compliance: Both ROHS3 Compliant and REACH Unaffected

The primary distinction is product status: the 0438006.WR is obsolete, while the 0438006.WRGT is active. The substitute part is supplied in Tape & Reel (TR) packaging, whereas the original part number does not specify packaging format.

Parameter Comparison

Engineering Selection Recommendations

The 0438006.WRGT is the direct active equivalent for the obsolete 0438006.WR. Both parts maintain identical electrical specifications across current rating, voltage ratings, and response characteristics. The substitute part carries current regulatory certifications (CSA, cURus) and maintains full ROHS3 and REACH compliance.

Selection of the 0438006.WRGT is appropriate for new designs and replacement applications where the original part is no longer available. The Tape & Reel packaging format of the substitute part is standard for high-volume surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 0438006.WRGT be used as a direct replacement for the 0438006.WR?

A: Yes. Both parts share identical electrical ratings (6A, 12VAC/24VDC), response time (Fast Blow), package format (0603), and mounting type (Surface Mount). The substitute part is the active equivalent of the obsolete original.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The 0438006.WR is obsolete, while the 0438006.WRGT is active. The substitute part is supplied in Tape & Reel packaging. Electrical and thermal specifications are equivalent.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 Compliant and REACH Unaffected. The substitute part carries CSA and cURus certifications, while the original lists CSA and UL. Both meet the same regulatory requirements for this product category.

Q: Does the packaging format affect electrical performance?

A: No. Tape & Reel packaging is a delivery and handling format only. It does not affect the electrical characteristics, thermal performance, or functional behavior of the fuse component.

Q: What is the operating temperature range for both parts?

A: Both the 0438006.WR and 0438006.WRGT operate across -55°C to 150°C, providing equivalent thermal performance across industrial and commercial temperature ranges.