SCHURTER 0034.6945 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.6945 is a 1 A, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through-hole radial mounting in radial can vertical package configuration. This fuse is classified as active product status and is ROHS3 compliant with multiple international approvals including CCC, cURus, KC, PSE/JET, and VDE. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit designs where the core functional requirements remain constant.

Key Parameters

Parameter	Value
Current Rating	1 A
Voltage Rating - AC	250 V
Response Time	Slow Blow
Mounting Type	Through Hole
Fuse Type	Board Mount (Cartridge Style Excluded)
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

Substitute parts for the SCHURTER 0034.6945 are identified based on strict alignment of the following critical parameters:

Current Rating: 1 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)
Fuse Type: Board Mount (Cartridge Style Excluded) (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)
Operating Temperature Range: -40°C ~ 85°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

Two substitute parts meet these criteria: SCHURTER 0034.6915 and SCHURTER 0034.7115. Both maintain identical electrical and mechanical specifications across all critical parameters, enabling direct substitution in applications where the main part is specified.

Parameter Comparison

Parameter	0034.6945 (Main)	0034.6915 (Substitute)	0034.7115 (Substitute)
Manufacturer	SCHURTER Inc.	SCHURTER Inc.	SCHURTER Inc.
Current Rating (Amps)	1 A	1 A	1 A
Voltage Rating - AC	250 V	250 V	250 V
Response Time	Slow Blow	Slow Blow	Slow Blow
Mounting Type	Through Hole	Through Hole	Through Hole
Fuse Type	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)
Package / Case	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)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Series	MXT 250	MXT 250	MSTU 250
Breaking Capacity @ Rated Voltage	100A	100A	50A
Melting I²t	4.4	4.4	6.85
Approval Agency	CCC, cURus, KC, PSE/JET, VDE	CCC, cURus, KC, PSE/JET, VDE	cULus
Product Status	Active	Active	Active
Inventory (Pcs)	1050	11605	2016

Engineering Selection Recommendations

All three parts—0034.6945, 0034.6915, and 0034.7115—maintain active product status and are ROHS3 compliant. The primary distinction lies in approval agency certifications and secondary electrical characteristics.

The 0034.6945 and 0034.6915 are functionally identical across all critical parameters, including breaking capacity (100A) and melting I²t (4.4). Both carry comprehensive international approvals: CCC, cURus, KC, PSE/JET, and VDE. The 0034.6915 offers higher inventory availability (11,605 pcs versus 1,050 pcs).

The 0034.7115 differs in approval agency scope (cULus only), breaking capacity (50A versus 100A), and melting I²t (6.85 versus 4.4). These differences reflect distinct series designations (MSTU 250 versus MXT 250) and may affect suitability depending on specific circuit protection requirements and regional compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can 0034.6915 directly replace 0034.6945 in all applications?

A: Yes. The 0034.6915 maintains identical electrical and mechanical specifications across all critical parameters: 1 A current rating, 250 V AC voltage rating, slow blow response, through-hole radial mounting, and 8.50mm x 8.50mm package dimensions. Both parts carry the same comprehensive approval certifications and RoHS3 compliance status.

Q: What are the key differences between 0034.7115 and the other two parts?

A: The 0034.7115 belongs to the MSTU 250 series rather than MXT 250, resulting in different breaking capacity (50A versus 100A) and melting I²t characteristics (6.85 versus 4.4). Additionally, approval agency coverage is limited to cULus rather than the broader CCC, cURus, KC, PSE/JET, and VDE certifications. These differences may impact suitability depending on circuit protection requirements and regional regulatory requirements.

Q: Are all three parts physically interchangeable?

A: Yes. All three parts share identical package dimensions (0.335" Dia x 0.335" H / 8.50mm x 8.50mm), mounting type (through-hole radial), and operating temperature range (-40°C ~ 85°C), enabling direct physical substitution on PCBs designed for radial can vertical fuse mounting.

Q: Which part should be selected for maximum approval coverage?

A: Both 0034.6945 and 0034.6915 provide identical approval agency coverage: CCC, cURus, KC, PSE/JET, and VDE. The 0034.7115 carries only cULus approval. Selection should align with specific regional compliance requirements for the target application.

Q: Does inventory availability affect substitution eligibility?

A: No. Inventory levels do not alter electrical or mechanical equivalence. The 0034.6915 offers significantly higher stock (11,605 pcs) compared to 0034.6945 (1,050 pcs), which may provide supply chain advantages without compromising functional compatibility.

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