Littelfuse 0262004.V Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0262004.V is a 4 A, 125 V AC/DC board mount fuse with fast blow response time, designed for through-hole radial mounting in electronic circuits. This component is classified as Active product status with full RoHS3 compliance and CSA, QPL, and UL approvals. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and regulatory certifications align with the original specification, enabling direct replacement in circuit board applications without design modification.

Substiute Parts

0262004.V

Littelfuse Inc.In Stock: 9960262004.V Datasheet

Current PartRFQ

0034.4227

SCHURTER Inc.In Stock: 17870034.4227 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0262004.V are qualified based on the following electrical and mechanical parameters:

• Current Rating: 4 A (exact match required)
• Voltage Rating: 125 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Fuse Type: Board Mount, Cartridge Style Excluded (exact match required)
• Package / Case: Radial, Can configuration (compatible geometry)
• RoHS Compliance: ROHS3 Compliant (regulatory alignment)

The SCHURTER 0034.4227 meets all critical electrical parameters and mounting requirements, enabling direct functional substitution in board mount fuse applications.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0262004.V and SCHURTER 0034.4227 are Active product status components with ROHS3 compliance and international regulatory certifications. Selection between these parts should be based on:

• Approval agency requirements: The Littelfuse part carries CSA, QPL, and UL certifications, while the SCHURTER part carries cURus certification. Verify circuit design documentation for required approval standards.
• Physical dimensions: The SCHURTER part is slightly larger (0.252" Dia x 0.346" H versus 0.235" Dia x 0.290" H). Confirm PCB footprint and component spacing accommodate the substitute geometry.
• Breaking capacity: The Littelfuse part specifies 10 kA breaking capacity; the SCHURTER part specifies 100 A. Verify circuit fault current levels align with the selected part's breaking capacity rating.
• Operating temperature range: The Littelfuse part operates -55°C to 125°C; the SCHURTER part operates -25°C to 85°C. Confirm application temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.4227 directly replace the Littelfuse 0262004.V in all applications?

A: Direct replacement is possible when electrical parameters (4 A, 125 V AC/DC, Fast Blow) are the primary selection criteria and PCB layout accommodates the slightly larger physical dimensions (0.252" Dia x 0.346" H). Verify approval agency certifications and operating temperature range match application requirements before substitution.

Q: What are the critical differences between these two fuses?

A: The primary differences are physical size, breaking capacity rating, approval certifications, and operating temperature range. Both parts share identical electrical ratings (4 A, 125 V AC/DC, Fast Blow response) and mounting type (Through Hole, Board Mount, Radial Can).

Q: Does the larger size of the SCHURTER part affect circuit board compatibility?

A: The SCHURTER 0034.4227 is 0.017" larger in diameter and 0.056" taller than the Littelfuse part. PCB footprint spacing and component clearance must be verified before substitution to prevent mechanical interference.

Q: Are both parts RoHS compliant?

A: Yes, both the Littelfuse 0262004.V and SCHURTER 0034.4227 are ROHS3 Compliant and REACH Unaffected.

Q: Which part should be selected for high-fault-current applications?

A: The Littelfuse 0262004.V specifies 10 kA breaking capacity, compared to the SCHURTER part's 100 A rating. For circuits with fault currents exceeding 100 A, the Littelfuse part is the appropriate selection.