Murata Power Solutions 48680C Shielded Wirewound Inductor

Part Overview

The Murata Power Solutions 48680C is a 68 µH shielded wirewound inductor rated for 1.5 A continuous current with a maximum DC resistance of 409mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is designed for applications requiring controlled inductance with electromagnetic shielding in compact form factors.

The 48680C maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative components may be required due to inventory constraints, application-specific current requirements, or thermal operating range specifications.

Substiute Parts

48680C

Murata Power Solutions Inc.In Stock: 103248680C Datasheet

Current PartRFQ

SRF1260-680M

Bourns Inc.In Stock: 1992SRF1260-680M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns SRF1260-680M qualifies as a substitute based on the following alignment criteria:

Matching Parameters:

• Inductance in parallel configuration: 68 µH (equivalent to main part specification)
• Shielding: Shielded construction
• Mounting: Surface mount
• RoHS3 compliance and REACH unaffected status
• Moisture sensitivity: MSL 1 (Unlimited)
• Similar physical footprint: 12.50mm x 12.50mm x 6.20mm height

Substitution Basis: The SRF1260-680M is a 2-coil inductor array that provides 68 µH inductance when coils are connected in parallel configuration, directly matching the 48680C inductance specification. Both components feature shielded construction, surface mount packaging, and identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 48680C and SRF1260-680M maintain Active product status with full RoHS3 compliance and REACH unaffected certification, qualifying them for equivalent use in applications requiring 68 µH inductance at surface mount.

The SRF1260-680M offers superior electrical performance in parallel configuration with lower DC resistance (117mOhm vs 409mOhm) and higher current capacity (2.22 A vs 1.5 A). The extended operating temperature range (-40°C to 125°C vs -40°C to 85°C) provides additional thermal margin for high-temperature applications.

Selection between these components depends on circuit design requirements for current handling, thermal environment, and PCB layout constraints related to the inductor array configuration.

Frequently Asked Questions (FAQ)

Q: Can the SRF1260-680M directly replace the 48680C in existing designs?

A: The SRF1260-680M provides equivalent 68 µH inductance in parallel configuration and matches the 48680C in shielding, surface mount packaging, and compliance certifications. Physical dimensions are similar (12.50mm vs 12.20mm footprint). PCB layout verification is required to confirm fit within existing component placement constraints.

Q: What is the difference between the parallel and series configurations of the SRF1260-680M?

A: The SRF1260-680M is a 2-coil inductor array. In parallel configuration, it provides 68 µH inductance with 2.22 A current rating and 117mOhm DCR. In series configuration, it provides 272 µH inductance with 1.11 A current rating and 444mOhm DCR. Only the parallel configuration matches the 48680C specification.

Q: Are there temperature range considerations when substituting?

A: The 48680C operates from -40°C to 85°C, while the SRF1260-680M operates from -40°C to 125°C. Applications requiring operation above 85°C benefit from the SRF1260-680M extended range. Applications with maximum operating temperatures below 85°C are compatible with both components.

Q: How do the DC resistance values affect circuit performance?

A: The SRF1260-680M exhibits significantly lower DC resistance (117mOhm) compared to the 48680C (409mOhm). Lower DCR reduces resistive losses and heat generation in the inductor. Circuit designs sensitive to inductor losses or thermal dissipation may benefit from the SRF1260-680M characteristics.

Q: Are both components suitable for high-frequency applications?

A: Both components are shielded inductors designed for surface mount applications. The 48680C inductance is specified at 10 kHz test frequency. Frequency-dependent performance characteristics require evaluation against specific application operating frequencies and impedance requirements.