47330C Shielded Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions Inc. 47330C is a 33 µH shielded wirewound inductor rated for 1.8 A continuous current with a maximum DC resistance of 207mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is classified as Active product status with full RoHS3 compliance. Alternative equivalent parts become necessary when addressing specific application requirements including higher current capacity, extended temperature operating ranges, or alternative inductor array configurations that provide parallel connection options for reduced DC resistance characteristics.

Substiute Parts

47330C

Murata Power Solutions Inc.In Stock: 115147330C Datasheet

Current PartRFQ

SRF1260-330M

Bourns Inc.In Stock: 2633SRF1260-330M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SRF1260-330M qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Inductance Matching: The SRF1260-330M provides 33 µH inductance when coils are connected in parallel configuration, directly matching the 47330C primary inductance specification.

Shielding Compatibility: Both components feature shielded construction, maintaining electromagnetic isolation requirements for the application.

Surface Mount Configuration: Both parts utilize surface mount technology with nonstandard package geometries suitable for equivalent PCB integration.

Compliance Alignment: Both components maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory consistency.

Current Capacity: The SRF1260-330M parallel configuration supports 3.28 A current rating, exceeding the 47330C 1.8 A requirement and providing design margin.

Temperature Range Extension: The SRF1260-330M operates across -40°C to 125°C, extending the upper temperature limit by 40°C compared to the 47330C.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 47330C and SRF1260-330M should be based on application-specific requirements:

47330C Selection Criteria: Applications requiring single inductor configuration with standard footprint constraints and operating temperature limits not exceeding 85°C. This component provides the specified 33 µH inductance with established thermal performance within its rated range.

SRF1260-330M Selection Criteria: Applications requiring enhanced current handling capacity, reduced DC resistance losses, or extended temperature operation to 125°C. The dual-coil array configuration in parallel mode delivers superior electrical performance characteristics while maintaining 33 µH inductance specification. Both components maintain Active product status and full RoHS3 compliance, ensuring long-term supply availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the SRF1260-330M directly replace the 47330C without circuit modification?

A: The SRF1260-330M parallel configuration provides identical 33 µH inductance and shielded construction. However, the component is a dual-coil array rather than a single inductor. PCB layout and footprint compatibility must be verified, as the SRF1260-330M dimensions are 0.492" L x 0.492" W (12.50mm x 12.50mm) compared to the 47330C at 0.480" L x 0.480" W (12.20mm x 12.20mm).

Q: What is the primary advantage of the SRF1260-330M over the 47330C?

A: The SRF1260-330M offers significantly reduced DC resistance of 61.8mOhm maximum in parallel configuration versus 207mOhm maximum for the 47330C, resulting in lower power dissipation. Additionally, the 3.28 A current rating provides greater design margin compared to the 1.8 A rating of the 47330C.

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

A: The 47330C operates to 85°C maximum. The SRF1260-330M extends operation to 125°C, making it suitable for applications requiring elevated temperature performance within the specified range.

Q: Do both components share identical compliance certifications?

A: Both the 47330C and SRF1260-330M maintain RoHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level 1 (Unlimited). Regulatory requirements are equivalent between both components.

Q: What is the inductance value when the SRF1260-330M coils are connected in series?

A: The SRF1260-330M provides 132 µH inductance in series configuration. This configuration is not equivalent to the 47330C and should not be used as a substitute for 33 µH applications.