Equivalent & Substitute Parts for Littelfuse 0469002.WR

Part Overview

The Littelfuse 0469002.WR is a 2A, 63VDC surface mount board fuse in 1206 (3216 Metric) package with slow blow response characteristics. This component is classified as Obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical ratings and mechanical compatibility while offering active product status and improved availability.

Substiute Parts

0469002.WR

Littelfuse Inc.In Stock: 32850469002.WR Datasheet

Current PartRFQ

0407002.WR

Littelfuse Inc.In Stock: 111630407002.WR Datasheet

MFR RecommendedRFQ

SF-1206S200-2

Bourns Inc.In Stock: 6441SF-1206S200-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0469002.WR is determined by strict equivalence across the following critical parameters:

• Current Rating: Must be exactly 2 A
• Voltage Rating (DC): Must be exactly 63 V
• Response Time: Must be Slow Blow
• Package / Case: Must be 1206 (3216 Metric)
• Mounting Type: Must be Surface Mount
• Fuse Type: Must be Board Mount (Cartridge Style Excluded)
• Breaking Capacity @ Rated Voltage: Must be 50A

Both identified substitute parts meet these criteria and are manufactured by established component suppliers with active product status. Dimensional variations within the 1206 package specification and differences in secondary electrical characteristics (Melting I²t, DC Cold Resistance) do not preclude substitution when primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0407002.WR is the primary substitute option. As an active product from the original manufacturer, it maintains identical electrical specifications and operating temperature range (-55°C ~ 150°C) to the obsolete 0469002.WR. The part carries cURus certification and is available in Tape & Reel packaging with substantial inventory (11,132 pcs). Dimensional variation is minimal and within 1206 package tolerance.

Bourns SF-1206S200-2 is a secondary substitute option. This active product meets all critical electrical and mechanical substitution criteria with UL certification. The operating temperature range is narrower (-20°C ~ 105°C), which may limit applicability in designs requiring the full -55°C ~ 150°C specification. Dimensional profile is more compact (3.10 x 1.55 x 0.60 mm) while remaining within 1206 package specification. Inventory availability is adequate (6,406 pcs).

Selection between these substitutes should prioritize the Littelfuse 0407002.WR when the full operating temperature range is required. The Bourns option is suitable for applications operating within -20°C ~ 105°C boundaries.

Frequently Asked Questions (FAQ)

Q: Can the 0407002.WR directly replace the obsolete 0469002.WR in existing designs?

A: Yes. Both parts share identical current rating (2A), voltage rating (63VDC), response time (Slow Blow), package (1206), and breaking capacity (50A). The 0407002.WR maintains the same operating temperature range (-55°C ~ 150°C) and RoHS3 compliance status.

Q: What is the key difference between the Littelfuse and Bourns substitutes?

A: The primary difference is operating temperature range. The Littelfuse 0407002.WR supports -55°C ~ 150°C, matching the original part. The Bourns SF-1206S200-2 operates within -20°C ~ 105°C. Both meet all electrical and mechanical substitution criteria.

Q: Are there dimensional compatibility concerns with these substitutes?

A: All three parts conform to the 1206 (3216 Metric) package specification. Dimensional variations (length, width, height) fall within standard package tolerances. PCB footprints designed for 1206 components will accommodate all three parts without modification.

Q: Do these substitutes carry the same certifications as the original part?

A: The 0407002.WR carries cURus certification. The SF-1206S200-2 carries UL certification. The original 0469002.WR carried CSA and UL certifications. Verify certification requirements for your specific application before selection.

Q: Is the Bourns part suitable for high-temperature applications?

A: The Bourns SF-1206S200-2 is rated to 105°C maximum. If your application requires operation above 105°C or below -20°C, the Littelfuse 0407002.WR is the appropriate choice.