SCHURTER 2040.0620 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 2040.0620 is a 3.15 A, 250 V AC board mount fuse with radial, can-style vertical mounting. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and procurement planning. The fuse is designed for through-hole PCB mounting applications requiring slow-blow response characteristics and operates across a temperature range of -40°C to 85°C.

Substiute Parts

2040.0620

SCHURTER Inc.In Stock: 7912040.0620 Datasheet

Current PartRFQ

0034.6620

SCHURTER Inc.In Stock: 112050034.6620 Datasheet

DirectRFQ

0034.7120

SCHURTER Inc.In Stock: 12570034.7120 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2040.0620 are identified based on the following critical parameters that determine functional compatibility:

• Current Rating: 3.15 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Size / Dimension: 0.335" Dia x 0.335" H / 8.50mm x 8.50mm (exact match required)

Two substitute parts meet these criteria: SCHURTER 0034.6620 (direct manufacturer substitute with dual AC/DC voltage rating) and SCHURTER 0034.7120 (parametric equivalent with enhanced breaking capacity).

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 0034.6620 is the direct manufacturer substitute. It maintains all critical electrical and mechanical parameters of the 2040.0620 while adding DC voltage capability (125 V DC). This part is currently in active production status with significantly higher inventory availability (11,180 pcs vs. 693 pcs for the main part). The 0034.6620 carries expanded regulatory approvals including KC and PSE/JET certifications and supports an extended operating temperature range (-55°C ~ 125°C). The melting I²t value differs (55 vs. 76), reflecting design optimization in the active product line.

SCHURTER 0034.7120 is a parametric equivalent offering enhanced breaking capacity (50A vs. 35A) while maintaining identical current, voltage, and response time specifications. This part is also in active production with moderate inventory (1,217 pcs). The 0034.7120 carries cULus certification and maintains the original operating temperature range. The reduced melting I²t (55 vs. 76) aligns with modern fuse design standards.

Both substitute parts are ROHS3 compliant and share identical physical dimensions and mounting characteristics with the obsolete 2040.0620, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 0034.6620 replace the 2040.0620 in all applications?

A: The 0034.6620 maintains all critical AC parameters (3.15 A, 250 V, slow-blow response, through-hole radial mounting, 8.50mm x 8.50mm package). The addition of 125 V DC rating does not affect AC-only applications. The extended temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C) provides broader operational capability. Verify that the application does not depend on the specific melting I²t value of 76; the 0034.6620 has a melting I²t of 55.

Q: What is the difference between the 0034.6620 and 0034.7120?

A: Both parts share identical current (3.15 A), AC voltage (250 V), response time (slow-blow), and physical dimensions. The 0034.6620 adds DC voltage capability (125 V DC) and carries broader regulatory approvals (CCC, cURus, KC, PSE/JET, VDE). The 0034.7120 offers higher breaking capacity (50A vs. 35A AC for the 0034.6620) and carries cULus certification. Select based on application requirements: choose 0034.6620 for dual AC/DC systems; choose 0034.7120 for AC-only systems requiring higher breaking capacity.

Q: Are there any physical compatibility concerns with PCB mounting?

A: No. All three parts share identical package specifications (Radial, Can, Vertical) and dimensions (0.335" Dia x 0.335" H / 8.50mm x 8.50mm). Through-hole radial mounting is identical across all parts, requiring no PCB layout modifications.

Q: Which substitute part has better availability?

A: The 0034.6620 has the highest inventory (11,180 pcs new original in stock), followed by 0034.7120 (1,217 pcs). The original 2040.0620 is obsolete with limited remaining stock (693 pcs).

Q: Do the substitute parts carry the same regulatory approvals?

A: No. The 2040.0620 carries CCC, cURus, and VDE approvals. The 0034.6620 expands this to include KC and PSE/JET certifications. The 0034.7120 carries cULus certification. Verify that your application requirements align with the available certifications for your selected substitute.