Littelfuse 0253005.V Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0253005.V is a 5 A, 125 V AC/DC board mount fuse with axial through-hole mounting. This fast-blow fuse is part of the PICO® II 253 series and is designed for circuit protection in electronic equipment requiring reliable overcurrent protection at low voltage levels. The part maintains active product status with 1014 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component interchange based on equivalent electrical and mechanical specifications.

Substiute Parts

0253005.V

Littelfuse Inc.In Stock: 10470253005.V Datasheet

Current PartRFQ

7010.6420.13

SCHURTER Inc.In Stock: 11587010.6420.13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 0253005.V is determined by the following critical parameters:

• Current Rating: 5 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)
• RoHS Compliance: ROHS3 Compliant

The SCHURTER 7010.6420.13 meets all mandatory electrical parameters and compliance requirements, qualifying it as a direct substitute. Physical dimensions and melting I²t values differ between the two parts; however, these variations remain within acceptable tolerances for board mount fuse applications where the primary function—overcurrent protection at specified voltage and current ratings—is preserved.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0253005.V and SCHURTER 7010.6420.13 are active products with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• PCB layout constraints: The SCHURTER part has a smaller diameter (0.093" vs 0.103") but greater length (0.315" vs 0.280"). Verify board footprint compatibility before substitution.
• Temperature environment: The Littelfuse part operates to 125°C; the SCHURTER part to 85°C. Applications requiring operation above 85°C require the Littelfuse part.
• Regulatory approvals: The Littelfuse part carries CCC, CSA, PSE, QPL, TUV, and UR certifications. Verify that application requirements do not mandate specific approval agencies before selecting the SCHURTER substitute.
• Melting I²t characteristics: The SCHURTER part has a higher melting I²t value (8.7 vs 4.14), resulting in different thermal response characteristics. Confirm circuit protection requirements are met with the substitute part's thermal profile.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 7010.6420.13 be used as a direct replacement for the Littelfuse 0253005.V?

A: The SCHURTER part is electrically equivalent, matching the 5 A, 125 V AC/DC, fast-blow specifications. However, physical dimensions differ. Verify PCB hole spacing and component clearance before substitution. Additionally, confirm that the operating temperature range (85°C maximum for SCHURTER vs 125°C for Littelfuse) is acceptable for your application.

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

A: The primary differences are physical dimensions, melting I²t value, maximum operating temperature, and regulatory certifications. The Littelfuse part supports higher temperature operation and carries additional approval certifications. The SCHURTER part has a smaller diameter but greater length.

Q: Does the difference in melting I²t affect circuit protection?

A: Melting I²t determines the thermal energy required to melt the fuse element. The SCHURTER part's higher I²t value (8.7 vs 4.14) means it requires more thermal energy to open. This may affect protection response in circuits with specific inrush current or transient characteristics. Verify that circuit protection requirements are met with the substitute part's thermal profile.

Q: Are both parts RoHS compliant?

A: Yes, both the Littelfuse 0253005.V and SCHURTER 7010.6420.13 are ROHS3 compliant and REACH unaffected.

Q: Which part should I select for high-temperature applications?

A: The Littelfuse 0253005.V supports operation to 125°C. The SCHURTER part is rated to 85°C maximum. For applications exceeding 85°C ambient or component temperature, the Littelfuse part is required.

Q: What regulatory certifications does each part carry?

A: The Littelfuse 0253005.V carries CCC, CSA, PSE, QPL, TUV, and UR certifications. The SCHURTER 7010.6420.13 does not list specific approval agencies. Verify that your application's regulatory requirements are met by the selected part.