SCHURTER 2040.0712 Board Mount Fuse Equivalent & Substitute Parts

Part Overview

The SCHURTER 2040.0712 is a 500 mA, 250 V AC board mount fuse with radial, can, vertical package configuration designed for through-hole mounting applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The fuse features slow-blow response characteristics and is approved by CCC, cURus, and VDE standards.

Substiute Parts

2040.0712

SCHURTER Inc.In Stock: 9532040.0712 Datasheet

Current PartRFQ

0034.6712

SCHURTER Inc.In Stock: 11190034.6712 Datasheet

DirectRFQ

0034.7212

SCHURTER Inc.In Stock: 8990034.7212 Datasheet

Parametric EquivalentRFQ

38505000000

Littelfuse Inc.In Stock: 114138505000000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 2040.0712 is determined by the following critical parameters:

• Current Rating: 500 mA (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)

Parts meeting all these criteria are classified as direct equivalents. Parts with identical electrical and mechanical specifications but different product status or additional voltage ratings are classified as direct manufacturer alternatives. Parts from different manufacturers with matching core electrical specifications but different physical dimensions or voltage ratings are classified as similar alternatives.

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 0034.6712 (Direct Manufacturer Equivalent)

The 0034.6712 is the primary direct equivalent for the obsolete 2040.0712. Both parts share identical current rating, AC voltage rating, response time, mounting type, package configuration, and physical dimensions. The 0034.6712 is active in production and carries expanded approval certifications (CCC, cURus, KC, VDE). The addition of 125 V DC rating and extended operating temperature range (-55°C ~ 125°C) provides enhanced capability without compromising AC circuit compatibility. Breaking capacity is increased to 35A AC and 50A DC.

SCHURTER 0034.7212 (Parametric Equivalent)

The 0034.7212 maintains identical electrical specifications for AC operation (500 mA, 250 V, slow-blow) and physical dimensions. This part is active in production and carries cULus approval. The breaking capacity is increased to 50A and melting I²t is reduced to 0.898. This part is suitable for applications where cULus certification is required and the reduced melting I²t is acceptable.

Littelfuse 38505000000 (Similar Alternative)

The 38505000000 is a similar alternative from Littelfuse Inc. with matching current rating (500 mA) and slow-blow response. However, the AC voltage rating is reduced to 125 V, making this part suitable only for circuits operating at 125 V AC or lower. Physical dimensions differ (0.335" L x 0.157" W x 0.315" H versus 0.335" Dia x 0.335" H), requiring PCB layout verification. This part carries cURus approval and is active in production.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.6712 be used as a direct replacement for the 2040.0712?

A: Yes. The 0034.6712 meets all critical electrical and mechanical parameters: 500 mA current rating, 250 V AC voltage rating, slow-blow response, through-hole mounting, radial can vertical package, and 8.50mm x 8.50mm dimensions. The part is active in production and carries expanded certifications.

Q: What is the difference between the 0034.6712 and 0034.7212?

A: Both parts share identical AC electrical specifications and physical dimensions. The 0034.6712 includes 125 V DC rating and extended operating temperature (-55°C ~ 125°C), while the 0034.7212 has reduced melting I²t (0.898 versus 2.5) and different approval certifications (cULus only versus CCC, cURus, KC, VDE).

Q: Can the Littelfuse 38505000000 replace the SCHURTER 2040.0712?

A: The 38505000000 is a similar alternative only for circuits operating at 125 V AC or lower. The reduced voltage rating (125 V AC versus 250 V AC) makes this part unsuitable for 250 V AC applications. Physical dimensions also differ, requiring PCB layout verification.

Q: What are the key parameters that determine substitution eligibility?

A: Current rating (500 mA), AC voltage rating (250 V), response time (slow-blow), mounting type (through-hole), package configuration (radial, can, vertical), and physical dimensions (8.50mm x 8.50mm) are the critical parameters. All substitute parts must match these specifications exactly.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 0034.6712, 0034.7212, and 38505000000 are all ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the main part.

Q: What approval certifications should I consider when selecting a substitute?

A: The 0034.6712 carries the broadest certification set (CCC, cURus, KC, VDE). The 0034.7212 carries cULus certification. The 38505000000 carries cURus certification. Select based on your circuit's required compliance standards.