Murata Power Solutions 48220C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 48220C is a 22 µH shielded wirewound inductor rated for 2.6 A continuous current with a maximum DC resistance of 119mOhm. This surface mount component operates across the industrial temperature range of -40°C to 85°C and is designed for applications requiring compact, shielded inductive filtering and energy storage in power conversion circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for long-term procurement and deployment in regulated applications. Equivalent parts are identified when they provide matching inductance values under specified connection configurations while maintaining compatible electrical and mechanical parameters.

Substiute Parts

48220C

Murata Power SolutionsIn Stock: 246748220C 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 an equivalent substitute based on the following substitution criteria:

Primary Substitution Parameter: The SRF1260-220M is a dual-coil inductor array that provides 22 µH inductance when the coils are connected in parallel configuration, matching the primary inductance specification of the 48220C.

Electrical Compatibility: When configured in parallel, the SRF1260-220M delivers 22 µH inductance with a maximum current rating of 3.7 A, which exceeds the 48220C requirement of 2.6 A. The parallel DC resistance of 45.1mOhm is lower than the 48220C specification of 119mOhm, providing improved efficiency characteristics.

Mechanical Compatibility: Both components are surface mount devices with nonstandard package geometries. The SRF1260-220M footprint measures 12.50mm x 12.50mm with a maximum height of 6.20mm, compared to the 48220C at 12.20mm x 12.20mm x 6.20mm. These dimensions are sufficiently similar for PCB layout adaptation.

Environmental & Compliance Alignment: Both parts operate under RoHS3 compliance, maintain MSL 1 (Unlimited) moisture sensitivity rating, and are classified under identical HTSUS and ECCN codes, confirming regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the Murata 48220C and Bourns SRF1260-220M maintain Active product status with confirmed long-term availability. Selection between these components should be based on circuit design requirements and PCB layout constraints.

The 48220C is the primary choice for applications where a single-coil inductor with fixed 119mOhm DCR is specified in the original design. This component is optimized for direct replacement scenarios with no circuit modifications required.

The SRF1260-220M serves as a functional equivalent when the parallel-connected configuration is implemented in the circuit design. This dual-coil array provides superior current handling capacity (3.7 A vs. 2.6 A) and significantly lower DC resistance (45.1mOhm vs. 119mOhm), resulting in reduced power dissipation and improved thermal performance. The extended operating temperature range to 125°C provides additional margin for high-temperature applications. Both components satisfy identical regulatory requirements under RoHS3 and REACH frameworks.

PCB layout modifications are necessary when transitioning between these components due to the 0.30mm increase in footprint dimensions (12.50mm vs. 12.20mm). Verification of clearance margins and trace routing is required prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the SRF1260-220M directly replace the 48220C without circuit modifications?

A: Direct PCB replacement is possible due to compatible mounting type and similar package height. However, the SRF1260-220M is a dual-coil array that must be configured in parallel to achieve 22 µH inductance. Circuit design must account for the parallel connection topology. Additionally, the footprint dimensions differ by 0.30mm in length and width, requiring PCB layout verification.

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

A: The SRF1260-220M parallel configuration exhibits 45.1mOhm maximum DCR compared to the 48220C at 119mOhm. Lower DC resistance reduces resistive power losses (I²R) during operation, resulting in decreased heat generation and improved efficiency. For a 2.6 A load, the 48220C dissipates approximately 0.81 W, while the SRF1260-220M dissipates approximately 0.30 W under identical conditions.

Q: Are there temperature range considerations when selecting between these parts?

A: The 48220C operates from -40°C to 85°C, while the SRF1260-220M extends to 125°C maximum. For applications operating above 85°C ambient or with elevated self-heating, the SRF1260-220M provides additional thermal margin. Both components maintain RoHS3 compliance across their respective operating ranges.

Q: How do the current ratings compare?

A: The SRF1260-220M parallel configuration is rated for 3.7 A continuous current, exceeding the 48220C specification of 2.6 A. This provides 42% additional current capacity. For applications operating at or near the 2.6 A design point, the SRF1260-220M offers improved headroom and reduced saturation risk.

Q: What packaging considerations apply to these components?

A: Both components are surface mount devices with nonstandard 4-lead packages. The SRF1260-220M footprint is 0.30mm larger in both X and Y dimensions (12.50mm vs. 12.20mm). PCB layout files must be updated to accommodate the larger footprint. Solder pad spacing and trace routing require verification to ensure compatibility with existing assembly processes.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the 48220C and SRF1260-220M are RoHS3 compliant, REACH unaffected, classified under identical HTSUS and ECCN codes, and maintain MSL 1 (Unlimited) moisture sensitivity ratings. They are suitable for equivalent use in regulated applications requiring these certifications.