244R7C Equivalent & Substitute Parts

Part Overview

The 244R7C is a 4.7 µH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., designed for surface mount applications. This component is rated for 2.1 A continuous current with a maximum DC resistance of 50mOhm and operates across the temperature range of -40°C to 85°C. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching package form factors are available from alternative manufacturers, enabling design flexibility and supply chain optimization.

Substiute Parts

244R7C

Murata Power Solutions Inc.In Stock: 2499244R7C Datasheet

Current PartRFQ

SDR0604-4R7ML

Bourns Inc.In Stock: 8112SDR0604-4R7ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 244R7C is determined by the following critical parameters:

Inductance value must match at 4.7 µH, as this is the primary functional specification. Current rating of the substitute must meet or exceed 2.1 A to ensure safe operation under the same load conditions. DC resistance should not significantly exceed the 50mOhm maximum, as higher resistance increases power dissipation and heat generation. Shielding configuration must remain unshielded to maintain electromagnetic compatibility with the original design. Surface mount packaging and nonstandard form factor are required for PCB integration compatibility. Operating temperature range must support the -40°C to 85°C specification or extend beyond it. RoHS3 compliance and MSL 1 rating are mandatory for regulatory and manufacturing process compatibility.

The SDR0604-4R7ML from Bourns Inc. qualifies as a direct substitute based on matching inductance (4.7 µH), unshielded configuration, surface mount technology, nonstandard package dimensions within acceptable tolerance, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 244R7C and SDR0604-4R7ML are active production components with full RoHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory compliance and manufacturing process compatibility. The 244R7C offers a higher current rating of 2.1 A compared to the SDR0604-4R7ML at 1.8 A, making the original part suitable for applications requiring maximum current capacity. The SDR0604-4R7ML provides an extended operating temperature range to 125°C, beneficial for high-temperature environments. The SDR0604-4R7ML exhibits higher DC resistance at 80mOhm maximum versus 50mOhm, resulting in increased power dissipation. Physical dimensions are comparable with minor height variation. Selection between these parts should be based on specific application requirements regarding current capacity, thermal environment, and acceptable power loss characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SDR0604-4R7ML replace the 244R7C in all applications?

A: The SDR0604-4R7ML is functionally equivalent for inductance value and frequency response. However, the lower current rating (1.8 A vs. 2.1 A) and higher DC resistance (80mOhm vs. 50mOhm) must be evaluated against application requirements. Applications operating at or near 2.1 A may experience thermal stress with the substitute part.

Q: What are the physical compatibility considerations?

A: Both parts use nonstandard surface mount packages with similar footprints. The SDR0604-4R7ML is slightly taller (4.80mm vs. 4.50mm) and wider (5.80mm vs. 5.20mm). PCB layout and clearance verification is required before substitution.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 ratings. No compliance barriers exist for substitution from a regulatory perspective.

Q: How does the higher DC resistance of the SDR0604-4R7ML affect circuit performance?

A: Higher DC resistance increases I²R power dissipation. At 2.1 A, the 244R7C dissipates 0.22 W while the SDR0604-4R7ML would dissipate 0.35 W. Thermal management and efficiency considerations must be evaluated for the specific application.

Q: What is the significance of the different self-resonant frequencies?

A: The 244R7C operates at 45 MHz self-resonant frequency while the SDR0604-4R7ML operates at 34 MHz. This affects high-frequency performance and impedance characteristics. Applications operating near these frequencies require detailed frequency response analysis.