SCHURTER 0034.7203 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.7203 is a 63 mA, 250 V AC/DC board mount fuse with slow blow response characteristics. This radial, can-style through-hole component is designed for circuit protection in electronic equipment requiring reliable overcurrent protection. The part is currently active in production with full cULus approval and ROHS3 compliance. Substitute parts are identified when identical electrical specifications, mechanical compatibility, and regulatory certifications are maintained across alternative manufacturer part numbers.

Substiute Parts

0034.7203

SCHURTER Inc.In Stock: 10220034.7203 Datasheet

Current PartRFQ

0034.7103

SCHURTER Inc.In Stock: 10250034.7103 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 0034.7203 is determined by strict equivalence across the following critical parameters:

• Current Rating: 63 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 Style: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 50 A @ Rated Voltage (exact match required)
• Melting I²t: 0.0176 (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Physical Dimensions: 0.335" Dia × 0.335" H / 8.50 mm × 8.50 mm (exact match required)
• Regulatory Compliance: cULus approval and ROHS3 compliance (exact match required)

The SCHURTER 0034.7103 meets all substitution criteria as a parametric equivalent within the MSTU 250 series.

Parameter Comparison

Engineering Selection Recommendations

Both the SCHURTER 0034.7203 and 0034.7103 are active production components with identical electrical, mechanical, and regulatory characteristics. Selection between these parts may be based on inventory availability and lead time considerations. Both parts carry cULus approval and maintain ROHS3 compliance, ensuring suitability for applications requiring certified circuit protection. The MSTU 250 series designation confirms compatibility within the same product family.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.7103 be used as a direct replacement for the 0034.7203?

A: Yes. The 0034.7103 is a parametric equivalent with identical current rating (63 mA), voltage rating (250 V AC), response time (slow blow), mounting configuration (through hole), package style (radial, can, vertical), breaking capacity (50 A), thermal characteristics, and regulatory certifications (cULus, ROHS3).

Q: Are there any differences in physical dimensions between these parts?

A: No. Both parts share identical dimensions of 0.335" diameter × 0.335" height (8.50 mm × 8.50 mm), ensuring mechanical compatibility in the same PCB footprint.

Q: What is the significance of the MSTU 250 series designation?

A: The MSTU 250 series indicates a product family within SCHURTER's fuse portfolio rated for 250 V operation. Both substitute parts belong to this series, confirming functional and mechanical alignment.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the 0034.7203 and 0034.7103 are ROHS3 compliant, REACH unaffected, and carry cULus approval. Both are classified under ECCN EAR99 and HTSUS code 8536.10.0040.

Q: What is the melting I²t value, and why is it important for substitution?

A: The melting I²t value of 0.0176 defines the thermal energy required to melt the fuse element. Identical I²t values between substitute parts ensure equivalent protection characteristics and response behavior in the circuit.

Q: What operating temperature range do these fuses support?

A: Both parts operate across the range of -40°C to 85°C, providing consistent performance across industrial and commercial temperature environments.