Murata 483R3SC Equivalent & Substitute Parts

Part Overview

The Murata 483R3SC is a 3.3 µH shielded wirewound inductor rated for 7.3 A continuous current with a maximum DC resistance of 12mOhm. This component is designed for surface mount applications requiring compact form factor and electromagnetic shielding. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

483R3SC

Murata Power Solutions Inc.In Stock: 770483R3SC Datasheet

Current PartRFQ

SRR1260-3R3Y

Bourns Inc.In Stock: 2161SRR1260-3R3Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 483R3SC is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value: 3.3 µH (within ±30% tolerance band)
• Current rating: minimum 7.3 A continuous
• DC resistance: maximum 12mOhm
• Shielding requirement: shielded construction mandatory
• Operating temperature range: minimum -40°C to 85°C coverage

Mechanical Compatibility Criteria:

• Mounting type: surface mount only
• Package configuration: nonstandard, 4-lead form factor
• Physical dimensions: compatible with 12.20mm × 12.20mm footprint tolerance

Compliance Criteria:

• RoHS3 compliance required
• Moisture sensitivity level: MSL 1 (unlimited)

The Bourns SRR1260-3R3Y meets all substitution criteria through equivalent inductance, superior current rating (7.6 A), matching DC resistance specification, and identical shielding architecture.

Parameter Comparison

Engineering Selection Recommendations

The Bourns SRR1260-3R3Y qualifies as a direct substitute for the Murata 483R3SC based on the following engineering criteria:

Electrical Performance: Both components deliver 3.3 µH inductance within identical ±30% tolerance specifications. The Bourns part provides 7.6 A current rating, exceeding the Murata requirement of 7.3 A. DC resistance specifications are matched at 12mOhm maximum, ensuring equivalent power dissipation characteristics.

Thermal Compliance: The Bourns substitute extends the operating temperature range to -40°C to 125°C, providing broader environmental coverage than the Murata specification of -40°C to 85°C.

Regulatory Compliance: Both components maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, ensuring equivalent reliability and supply chain compatibility.

Physical Integration: Both parts are surface mount, shielded inductors with nonstandard 4-lead configurations suitable for identical PCB footprints within standard manufacturing tolerances.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1260-3R3Y be used as a direct replacement for the Murata 483R3SC?

A: Yes. Both components share identical inductance (3.3 µH), inductance tolerance (±30%), DC resistance (12mOhm max), and shielding architecture. The Bourns part provides higher current rating (7.6 A vs. 7.3 A) and extended temperature range (-40°C to 125°C vs. -40°C to 85°C), making it functionally compatible for the Murata application.

Q: Are there physical footprint differences between these inductors?

A: Both parts are surface mount, nonstandard 4-lead configurations. The Murata measures 12.20mm × 12.20mm × 6.00mm (max height), while the Bourns measures 12.50mm × 12.50mm × 6.50mm (max height). These dimensional differences are within standard PCB layout tolerances for nonstandard packages.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the Murata 483R3SC and Bourns SRR1260-3R3Y are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating. Both carry EAR99 ECCN classification and HTSUS code 8504.50.4000.

Q: What is the inductance tolerance specification for these parts?

A: Both inductors are specified at ±30% inductance tolerance, measured at their respective test frequencies (Murata at 10 kHz, Bourns at 100 kHz).

Q: Are there differences in the core material construction?

A: The Murata 483R3SC uses wirewound construction. The Bourns SRR1260-3R3Y uses drum core, wirewound construction with ferrite core material. Both architectures provide shielded performance suitable for the specified application.