Murata 486R8SC 6.8µH Shielded Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Murata 486R8SC is a 6.8 µH shielded wirewound inductor rated for 5.1 A continuous current with a maximum DC resistance of 21mOhm. This component is designed for surface mount applications requiring compact form factor and electromagnetic shielding. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

486R8SC

Murata Power Solutions Inc.In Stock: 693486R8SC Datasheet

Current PartRFQ

SRR1260-6R8Y

Bourns Inc.In Stock: 17199SRR1260-6R8Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 486R8SC is determined by the following critical parameters:

• Inductance Value: Must be 6.8 µH within the ±30% tolerance band
• Current Rating: Substitute must meet or exceed 5.1 A continuous current capability
• DC Resistance: Must not exceed 21mOhm maximum to maintain thermal and efficiency characteristics
• Shielding: Must be shielded to prevent electromagnetic interference in the application
• Mounting Type: Must be surface mount compatible
• Operating Temperature: Must support the -40°C to 85°C range minimum
• Compliance: Must maintain ROHS3 compliance status

The Bourns SRR1260-6R8Y meets all substitution criteria with improved current rating (6.3 A vs 5.1 A), lower DC resistance (18mOhm vs 21mOhm), and extended operating temperature range (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

The Bourns SRR1260-6R8Y is a qualified substitute for the Murata 486R8SC based on the following engineering criteria:

Electrical Compatibility: Both inductors maintain the same 6.8 µH inductance value with identical ±30% tolerance specifications. The substitute provides superior electrical characteristics with 6.3 A current rating versus 5.1 A, and lower DC resistance of 18mOhm compared to 21mOhm maximum.

Compliance Status: Both parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory and environmental compatibility.

Temperature Performance: The Bourns substitute extends the operating temperature range to -40°C to 125°C, providing additional thermal margin beyond the Murata specification of -40°C to 85°C.

Product Status: Both components are Active status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1260-6R8Y directly replace the Murata 486R8SC in existing designs?

A: Yes. Both inductors share identical inductance values (6.8 µH), tolerance specifications (±30%), shielding characteristics, and surface mount configuration. The Bourns substitute provides equal or superior performance across all critical electrical parameters.

Q: What are the physical dimension differences between these parts?

A: The Murata 486R8SC measures 0.480" L x 0.480" W x 0.236" H (12.20mm x 12.20mm x 6.00mm). The Bourns SRR1260-6R8Y measures 0.492" L x 0.492" W x 0.256" H (12.50mm x 12.50mm x 6.50mm). Verify PCB layout clearances before substitution.

Q: Does the lower DC resistance of the Bourns part affect circuit performance?

A: The Bourns substitute has 18mOhm maximum DC resistance compared to 21mOhm for the Murata part. Lower DC resistance reduces resistive losses and heat generation, providing improved efficiency without affecting inductance characteristics.

Q: Are both parts suitable for high-temperature applications?

A: The Murata 486R8SC operates to 85°C maximum. The Bourns SRR1260-6R8Y extends to 125°C, making it suitable for higher ambient temperature environments while maintaining full electrical specifications.

Q: What is the significance of the ±30% inductance tolerance?

A: The ±30% tolerance indicates the acceptable inductance variation from the nominal 6.8 µH value. Both parts share this tolerance specification, ensuring equivalent circuit behavior within the design tolerance band.

Q: Are there packaging or supply chain considerations for substitution?

A: Both parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly. Verify component availability and lead times with your supplier, as inventory levels may differ between manufacturers.