Murata Power Solutions 47220C Shielded Wirewound Inductor

Part Overview

The Murata Power Solutions 47220C is a 22 µH shielded wirewound inductor rated for 2.1 A continuous current with a maximum DC resistance of 165mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is designed for applications requiring compact, shielded inductance in nonstandard 4-lead packaging. The part 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 needs.

Substiute Parts

47220C

Murata Power Solutions Inc.In Stock: 100947220C Datasheet

Current PartRFQ

SRF1260-220M

Bourns Inc.In Stock: 1765SRF1260-220M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SRF1260-220M qualifies as a substitute based on the following electrical and mechanical criteria:

Inductance Compatibility: The SRF1260-220M is a 2-coil inductor array that provides 22 µH inductance when coils are connected in parallel, matching the primary inductance specification of the 47220C.

Current Rating: The parallel configuration of the SRF1260-220M supports 3.7 A continuous current, exceeding the 47220C requirement of 2.1 A.

DC Resistance: The parallel DCR of 45.1mOhm is significantly lower than the 47220C maximum of 165mOhm, providing improved efficiency characteristics.

Shielding: Both components feature shielded construction, maintaining electromagnetic isolation requirements.

Surface Mount Compatibility: Both parts are surface mount devices with nonstandard packaging suitable for compact board layouts.

Compliance: The SRF1260-220M maintains RoHS3 compliance and MSL 1 rating, consistent with the main part specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Murata 47220C and Bourns SRF1260-220M maintain Active product status with full RoHS3 compliance and REACH unaffected designation. The SRF1260-220M offers enhanced performance characteristics including higher current capacity and lower DC resistance, with an extended operating temperature range to 125°C. Selection between these components should be based on specific application requirements regarding current headroom, thermal dissipation, and available board space for the respective package dimensions.

Frequently Asked Questions (FAQ)

Q: Can the SRF1260-220M directly replace the 47220C in all applications?

A: The SRF1260-220M provides equivalent 22 µH inductance in parallel configuration with superior current rating and lower DC resistance. Physical package dimensions differ slightly (12.50mm x 12.50mm vs. 12.20mm x 12.20mm), and height varies (6.20mm vs. 5.00mm), requiring board layout verification.

Q: What is the significance of the lower DC resistance in the SRF1260-220M?

A: Lower DC resistance reduces power dissipation and heat generation during operation, improving overall circuit efficiency and potentially extending component lifespan in current-limited applications.

Q: Does the extended temperature range of the SRF1260-220M affect substitution suitability?

A: The SRF1260-220M operating range of -40°C to 125°C encompasses the 47220C range of -40°C to 85°C, providing additional thermal margin without introducing compatibility concerns.

Q: Are there packaging considerations when substituting these components?

A: Both components use nonstandard surface mount packaging. Physical dimensions and height must be evaluated against PCB layout constraints and available board space before implementation.

Q: What compliance certifications apply to both components?

A: Both the 47220C and SRF1260-220M maintain RoHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating, ensuring regulatory alignment across substitution.