SCHURTER 2030.0545 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 2030.0545 is a board mount fuse rated at 400mA, 125VAC/125VDC with fast blow response time, designed for through-hole mounting in telecom applications. This part is classified as obsolete, making identification of active equivalent components essential for ongoing system support and new design implementations. The MSU 125 series fuse requires substitution with functionally equivalent active production parts to maintain supply chain continuity.

Substiute Parts

2030.0545

SCHURTER Inc.In Stock: 10292030.0545 Datasheet

Current PartRFQ

0034.4545

SCHURTER Inc.In Stock: 29850034.4545 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SCHURTER 0034.4545 qualifies as a direct substitute for the 2030.0545 based on the following electrical and mechanical parameters:

• Current Rating: Both parts rated at 400mA
• Voltage Rating: Both rated 125VAC / 125VDC
• Response Time: Both Fast Blow
• Mounting Type: Both Through Hole
• Fuse Type: Both Board Mount
• Breaking Capacity: Both 100A @ rated voltage
• Melting I²t: Both 0.013
• Operating Temperature: Both -25°C to 85°C
• Package / Case: Both Radial, Can configuration
• Physical Dimensions: Both 0.252" Dia x 0.346" (6.40mm x 8.80mm)
• Compliance: Both ROHS3 Compliant, cURus approved

The primary distinction is product status: the 2030.0545 (MSU 125 series) is obsolete, while the 0034.4545 (MSF 125 series) is active production with higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 0034.4545 is the direct equivalent for the obsolete 2030.0545. Both parts share identical electrical ratings, thermal characteristics, and mechanical dimensions. The 0034.4545 is an active production component with significantly higher inventory availability (2948 units versus 976 units), ensuring long-term supply chain reliability.

Both parts maintain cURus approval and ROHS3 compliance, meeting regulatory requirements for telecom applications. The electrical parameters—current rating, voltage rating, breaking capacity, and melting I²t—are identical, confirming functional equivalence for circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.4545 be used as a direct replacement for the 2030.0545 in existing designs?

A: Yes. The 0034.4545 is electrically and mechanically equivalent. Both parts have identical current ratings (400mA), voltage ratings (125VAC/125VDC), response time (Fast Blow), breaking capacity (100A), and physical dimensions (0.252" Dia x 0.346"). Through-hole mounting compatibility is confirmed for both parts.

Q: What is the difference between the MSU 125 and MSF 125 series?

A: The 2030.0545 belongs to the MSU 125 series (obsolete), while the 0034.4545 belongs to the MSF 125 series (active production). Both series share identical electrical and mechanical specifications for this current and voltage rating.

Q: Are there any compliance or certification differences?

A: No. Both parts carry cURus approval and are ROHS3 compliant. REACH status is identical (REACH Unaffected) for both components.

Q: Does the package configuration differ between these parts?

A: Both parts use Radial, Can configuration. The 2030.0545 specifies "Radial, Can, Vertical" while the 0034.4545 specifies "Radial, Can." The physical dimensions are identical (0.252" Dia x 0.346"), confirming PCB footprint compatibility.

Q: What is the melting I²t specification and why is it important?

A: The melting I²t value of 0.013 is identical for both parts. This parameter defines the thermal energy required to melt the fuse element and is critical for circuit protection coordination. Identical I²t values confirm equivalent protection characteristics.