SCHURTER 2040.0820 Equivalent & Substitute Parts

Part Overview

The SCHURTER 2040.0820 is a 3.15 A, 250 V AC board mount fuse with radial, can, vertical package configuration. This part operates across -40°C to 85°C with slow blow response characteristics and is rated for 35 A breaking capacity at rated voltage. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible fuse protection.

Key Parameters

Parameter	Value
Current Rating	3.15 A
Voltage Rating - AC	250 V
Response Time	Slow Blow
Mounting Type	Through Hole
Package / Case	Radial, Can, Vertical
Size / Dimension	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SCHURTER 2040.0820 is determined by matching the following critical parameters:

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)

The substitute parts listed below meet all these core parameters and are manufactured by SCHURTER Inc., ensuring mechanical and electrical compatibility with the original design.

Parameter Comparison

Parameter	2040.0820 (Main)	0034.6820	0034.6980	0034.7320
Manufacturer	SCHURTER Inc.	SCHURTER Inc.	SCHURTER Inc.	SCHURTER Inc.
Current Rating (Amps)	3.15 A	3.15 A	3.15 A	3.15 A
Voltage Rating - AC	250 V	250 V	250 V	250 V
Voltage Rating - DC	Not specified	125 V	Not specified	Not specified
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can, Vertical	Radial, Can, Vertical	Radial, Can, Vertical	Radial, Can, Vertical
Size / Dimension	0.335" Dia x 0.335" H (8.50mm x 8.50mm)	0.335" Dia x 0.335" H (8.50mm x 8.50mm)	0.335" Dia x 0.335" H (8.50mm x 8.50mm)	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Breaking Capacity @ Rated Voltage	35 A	35 A AC, 50 A DC	100 A	50 A
Melting I²t	76	76	57	55
Operating Temperature	-40°C ~ 85°C	-55°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three substitute parts (0034.6820, 0034.6980, 0034.7320) are active products manufactured by SCHURTER Inc. and maintain full mechanical and electrical compatibility with the obsolete 2040.0820 in terms of current rating, AC voltage rating, response time, mounting configuration, and physical dimensions.

The 0034.6820 provides the closest electrical match with identical breaking capacity (35 A AC) and melting I²t (76) to the original part, with the addition of 125 V DC rating capability. This part carries expanded approval certifications including CCC, cURus, KC, PSE/JET, and VDE.

The 0034.6980 offers increased breaking capacity (100 A) and maintains the same operating temperature range as the original part. It carries CCC, cURus, KC, PSE/JET, and VDE certifications.

The 0034.7320 provides 50 A breaking capacity with cULus certification. This part carries the most limited certification scope among the three substitutes.

Selection should be based on system requirements for breaking capacity, DC voltage rating needs, and required approval certifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can the 0034.6820 be used as a direct replacement for the 2040.0820?

A: Yes. The 0034.6820 matches all critical parameters: 3.15 A 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 addition of 125 V DC rating does not prevent AC-only applications.

Q: What is the difference between the three substitute parts?

A: All three parts share identical current rating, AC voltage rating, response time, mounting type, package configuration, and physical dimensions. They differ in breaking capacity (35 A, 100 A, and 50 A respectively), melting I²t values, operating temperature ranges, and approval certifications.

Q: Does the 0034.6980 have DC voltage rating?

A: The 0034.6980 specification does not list a separate DC voltage rating, indicating it is rated for AC applications only, similar to the original 2040.0820.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts (0034.6820, 0034.6980, 0034.7320) are ROHS3 compliant and REACH unaffected, matching the environmental compliance of the original part.

Q: Which substitute part has the broadest approval certifications?

A: The 0034.6820 carries the most comprehensive certification set: CCC, cURus, KC, PSE/JET, and VDE. The 0034.6980 carries CCC, cURus, KC, PSE/JET, and VDE. The 0034.7320 carries cULus certification only.

Q: Can these parts be used interchangeably in the same circuit board design?

A: Yes, all substitute parts are mechanically and electrically compatible for through hole board mount applications with identical footprint and pin configuration. Breaking capacity and certification differences should be evaluated against specific system requirements.

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