SCHURTER 0034.6012 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.6012 is a 630 mA, 250 V AC/DC board mount fuse with fast blow response time, designed for through-hole radial mounting in vertical orientation. This component is classified as Active product status with full international compliance certifications. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval agencies align with the original specification, enabling direct circuit board replacement without design modification.

Key Parameters

Parameter	Value
Current Rating	630 mA
Voltage Rating (AC)	250 V
Response Time	Fast Blow
Mounting Type	Through Hole
Package / Case	Radial, Can, Vertical
Fuse Type	Board Mount (Cartridge Style Excluded)
Operating Temperature Range	-40°C ~ 85°C
Size / Dimension	0.335" Dia x 0.335" H (8.50mm x 8.50mm)
Approval Agencies	CCC, cURus, VDE
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.6012 are classified based on strict electrical and mechanical parameter alignment:

Parametric Equivalent Classification: Parts matching all critical electrical parameters (630 mA current rating, 250 V AC voltage rating, fast blow response) and mechanical specifications (radial can vertical package, through-hole mounting, 8.50mm x 8.50mm dimensions) with identical or superior approval agency certifications.

Similar Classification: Parts meeting core electrical ratings and mounting requirements but with minor variations in breaking capacity, melting I²t characteristics, or dimensional tolerances that remain within acceptable substitution boundaries for the product category.

The following parameters determine substitution eligibility:

Current Rating: 630 mA (exact match required)
Voltage Rating (AC): 250 V (exact match required)
Response Time: Fast Blow (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can, Vertical (exact match required)
Operating Temperature Range: -40°C ~ 85°C (exact match required)

Parameter Comparison

Parameter	SCHURTER 0034.6012	SCHURTER 0034.6042	Littelfuse 37006300410
Manufacturer	SCHURTER Inc.	SCHURTER Inc.	Littelfuse Inc.
Current Rating (Amps)	630 mA	630 mA	630 mA
Voltage Rating - AC	250 V	250 V	250 V
Response Time	Fast Blow	Fast Blow	Fast Blow
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can, Vertical	Radial, Can, Vertical	Radial, Can, Vertical
Fuse Type	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)
Breaking Capacity @ Rated Voltage	35A	35A	50A
Melting I²t	0.15	0.15	0.076
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
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 0.315" H (8.50mm x 8.00mm)
Series	MSF 250	MSF 250	TR5® 370
Approval Agency	CCC, cURus, VDE	CCC, cURus, VDE	CCC, cURus, SEMKO, VDE
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

SCHURTER 0034.6042: This part is a parametric equivalent to the SCHURTER 0034.6012, sharing identical electrical ratings, response characteristics, and mechanical dimensions. Both components are manufactured by SCHURTER Inc., carry Active product status, and maintain equivalent approval agency certifications (CCC, cURus, VDE). Selection between these two SCHURTER variants is determined by inventory availability and supply chain requirements, as they are functionally interchangeable.

Littelfuse 37006300410: This part meets all core electrical and mounting requirements (630 mA, 250 V AC, fast blow, through-hole radial vertical package). The component carries Active product status with expanded approval agency coverage (CCC, cURus, SEMKO, VDE). Minor dimensional variation exists in height (0.315" vs. 0.335"), and breaking capacity is elevated to 50A with reduced melting I²t (0.076 vs. 0.15). These characteristics indicate faster response under fault conditions. Selection of this substitute requires verification that the circuit design accommodates the dimensional tolerance and enhanced breaking capacity specification.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 0034.6042 be used as a direct replacement for SCHURTER 0034.6012?

A: Yes. Both parts share identical current rating (630 mA), voltage rating (250 V AC), response time (fast blow), mounting type (through hole), package configuration (radial can vertical), and physical dimensions (8.50mm x 8.50mm). They are functionally equivalent and carry the same approval certifications.

Q: What are the key differences between SCHURTER 0034.6012 and Littelfuse 37006300410?

A: The primary differences are manufacturer (SCHURTER vs. Littelfuse), breaking capacity (35A vs. 50A), melting I²t (0.15 vs. 0.076), and height dimension (0.335" vs. 0.315"). All other electrical parameters and certifications align. The Littelfuse part exhibits faster response characteristics under fault conditions due to lower melting I²t.

Q: Are there any dimensional compatibility concerns with the Littelfuse 37006300410?

A: The Littelfuse part has a height of 0.315" compared to 0.335" for the SCHURTER parts. This 0.020" (0.50mm) reduction in height must be evaluated against circuit board layout and component clearance requirements to ensure mechanical fit.

Q: Do all substitute parts carry the same international approvals?

A: SCHURTER 0034.6012 and 0034.6042 carry CCC, cURus, and VDE certifications. Littelfuse 37006300410 carries CCC, cURus, SEMKO, and VDE certifications, providing additional SEMKO approval coverage.

Q: Are all parts RoHS3 compliant?

A: Yes. SCHURTER 0034.6012, SCHURTER 0034.6042, and Littelfuse 37006300410 are all ROHS3 compliant.

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