Murata Power Solutions 496R8SC Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 496R8SC is a 6.8 µH shielded wirewound inductor rated for 6.2 A continuous current with a maximum DC resistance of 16mOhm. 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 for this inductor category.

Substiute Parts

496R8SC

Murata Power Solutions Inc.In Stock: 1048496R8SC Datasheet

Current PartRFQ

SRR1280-6R8Y

Bourns Inc.In Stock: 3529SRR1280-6R8Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 496R8SC is determined by the following critical parameters:

Inductance value must remain 6.8 µH within the ±30% tolerance band. Current rating must meet or exceed 6.2 A to support the same load conditions. DC resistance must not exceed 16mOhm maximum to maintain thermal and efficiency characteristics. Shielding must be present to prevent electromagnetic interference in the application. Operating temperature range must encompass the -40°C to 85°C minimum specification. Surface mount compatibility and nonstandard 4-lead package configuration must be maintained. RoHS3 compliance and unlimited moisture sensitivity rating must be preserved.

The Bourns SRR1280-6R8Y meets these substitution criteria through equivalent inductance, higher current rating capability, compatible shielding, surface mount configuration, and matching compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The Bourns SRR1280-6R8Y qualifies as a direct substitute for the Murata 496R8SC based on matching inductance specifications, equivalent shielding characteristics, and compatible surface mount configuration. Both components maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility.

The substitute part provides enhanced current rating capability (7.6 A versus 6.2 A) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), offering improved performance margins in thermal and load conditions. The DC resistance variance of 2.5mOhm above the original specification remains within acceptable engineering tolerances for this component category. Physical dimensions show minor variance (0.30mm increase in length and width) that is compatible with standard PCB layout tolerances for nonstandard package footprints.

Both parts are active production items with established supply availability, supporting long-term design continuity and procurement reliability.

Frequently Asked Questions (FAQ)

Q: What determines if the SRR1280-6R8Y can replace the 496R8SC?

A: Substitution is valid when inductance value, current rating, DC resistance, shielding type, operating temperature range, mounting configuration, and compliance certifications are equivalent or exceed the original specification. The SRR1280-6R8Y meets all these criteria.

Q: Does the higher current rating of the SRR1280-6R8Y affect circuit performance?

A: No. Higher current rating indicates greater saturation margin and thermal capacity. This provides additional design headroom without altering the inductor's electrical characteristics at the 6.2 A operating point.

Q: Are there PCB layout considerations due to dimensional differences?

A: The SRR1280-6R8Y footprint is 0.30mm larger in length and width (12.50mm versus 12.20mm). Standard PCB design tolerances accommodate this variance. Verify clearance to adjacent components in space-constrained layouts.

Q: Do both parts require identical soldering profiles?

A: Both components use surface mount technology with nonstandard 4-lead configurations. Consult manufacturer datasheets for specific reflow temperature profiles, as thermal mass differences may require minor profile adjustments.

Q: Is the DC resistance difference significant?

A: The 2.5mOhm increase (16mOhm to 18.5mOhm) represents a 15.6% variance. For most applications, this produces negligible thermal impact. Calculate power dissipation (I²R) for your specific current profile if thermal margin is critical.

Q: Can I use the SRR1280-6R8Y in high-temperature applications?

A: The extended operating range (-40°C to 125°C) supports higher ambient temperatures than the original 496R8SC (-40°C to 85°C). Verify that other circuit components support the same temperature range for system-level compatibility.