SCHURTER 3404.2466.22 Equivalent & Substitute Parts

Part Overview

The SCHURTER 3404.2466.22 is a 1 A, 250 V AC / 125 V DC surface mount board mount fuse in the UMK 250 series. This fast-blow fuse is designed for SMD applications with a 2-SMD square end block with clip package configuration. The part is actively manufactured and widely stocked, with 1699 units available in inventory. Substitute parts may be required due to supply constraints, regional availability, or specific application voltage requirements that exceed the primary part's ratings.

Substiute Parts

3404.2466.22

SCHURTER Inc.In Stock: 17903404.2466.22 Datasheet

Current PartRFQ

TR-1245UMFF1-R

Eaton - Electronics DivisionIn Stock: 4114TR-1245UMFF1-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Eaton TR-1245UMFF1-R qualifies as a functional substitute based on the following critical parameters:

Matching Parameters:

• Current Rating: 1 A (identical)
• Mounting Type: Surface Mount (identical)
• Fuse Type: Board Mount (Cartridge Style Excluded) (identical)
• Response Time: Fast Blow (identical)
• Package Configuration: 2-SMD, Square End Block (compatible form factor)
• Approval Standards: UL certification (recognized safety standard)
• Product Status: Active (current production)

Differing Parameters:

• Voltage Rating - AC: 350 V (higher than 250 V primary)
• Voltage Rating - DC: 250 V (higher than 125 V primary)
• Operating Temperature Range: -40°C to 125°C (extended upper limit)
• Physical Dimensions: 0.472" L x 0.177" W x 0.177" H (slightly larger)
• Breaking Capacity: 100 A (lower than primary 200 A AC / 100 A DC)

The substitute part maintains identical current rating and response characteristics while providing enhanced voltage ratings suitable for higher-voltage applications. The dimensional increase and reduced breaking capacity at rated voltage are the primary trade-offs in this substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SCHURTER 3404.2466.22): Select this part for applications operating at or below 250 V AC / 125 V DC with space constraints requiring the smaller 11.30 mm x 4.20 mm x 4.00 mm footprint. This part carries dual certification (cURus and VDE) and is ROHS3 compliant. Inventory availability is confirmed at 1699 units.

Substitute Part Selection (Eaton TR-1245UMFF1-R): Select this part for applications requiring higher voltage ratings (350 V AC / 250 V DC) or extended operating temperature range (-40°C to 125°C). The larger physical dimensions (12.00 mm x 4.50 mm x 4.50 mm) must be verified for PCB layout compatibility. UL certification is provided. Inventory availability is confirmed at 4100 units.

Both parts are actively manufactured and carry current product status. Selection between them depends on application voltage requirements and available PCB space.

Frequently Asked Questions (FAQ)

Q: Can the Eaton TR-1245UMFF1-R be used in place of the SCHURTER 3404.2466.22 in a 250 V AC application?

A: Yes. The Eaton part is rated for 350 V AC, which exceeds the 250 V AC requirement. The 1 A current rating and fast-blow response time are identical. However, verify that the larger physical dimensions (12.00 mm x 4.50 mm x 4.50 mm versus 11.30 mm x 4.20 mm x 4.00 mm) fit within your PCB layout constraints.

Q: What is the primary difference between these two fuses?

A: The primary differences are voltage rating and physical size. The Eaton part provides higher voltage ratings (350 V AC / 250 V DC versus 250 V AC / 125 V DC) and an extended operating temperature range (up to 125°C versus 85°C). Both maintain the same 1 A current rating and fast-blow response characteristic.

Q: Are there any certification differences I should consider?

A: The SCHURTER part carries cURus and VDE certifications. The Eaton part carries UL certification. Both are recognized safety standards. Verify that your application requirements specify acceptance of UL certification if substituting the Eaton part.

Q: Will the package clip configuration affect substitution?

A: The SCHURTER part specifies a square end block with clip. The Eaton part specifies a square end block without explicit clip notation. Verify mechanical mounting compatibility with your specific PCB receptacle design before substitution.

Q: Which part should I select for new designs?

A: For new designs, select based on application voltage requirements. If your circuit operates at 250 V AC / 125 V DC or below with space constraints, the SCHURTER part is appropriate. If higher voltage ratings or extended temperature operation is required, the Eaton part is suitable. Both are actively manufactured with confirmed inventory availability.