SWPA3012S4R7MT Equivalent & Substitute Parts

Part Overview

The SWPA3012S4R7MT is a 4.7 µH shielded drum core wirewound inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd. This surface mount component is rated for 1.24 A continuous current with a maximum DC resistance of 156 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently active in production and available in tape and reel packaging.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances. Alternative sources provide design flexibility, supply chain redundancy, and procurement options while preserving circuit functionality.

Substiute Parts

SWPA3012S4R7MT

Shenzhen Sunlord Electronics Co., Ltd.In Stock: 21902SWPA3012S4R7MT Datasheet

Current PartRFQ

BWVF003030124R7M00

Pulse ElectronicsIn Stock: 1609BWVF003030124R7M00 Datasheet

SimilarRFQ

SDCL1V3012-4R7M-R

Eaton - Electronics DivisionIn Stock: 3828SDCL1V3012-4R7M-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SWPA3012S4R7MT are qualified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 4.7 µH with ±20% tolerance
• Inductance tolerance: ±20%
• Core material: Ferrite
• Shielding: Shielded or Semi-Shielded configuration
• Mounting type: Surface Mount
• Package footprint: 3.00 mm x 3.00 mm
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Current rating: Equal to or greater than 1.24 A
• DC resistance: Equal to or less than 156 mOhm
• Operating temperature range: Minimum -40°C to 125°C coverage
• Saturation current: Sufficient to support application requirements

Substitutes are grouped by their ability to maintain these electrical and mechanical specifications within the constraints of the original design.

Parameter Comparison

Engineering Selection Recommendations

BWVF003030124R7M00 (Pulse Electronics)

This substitute provides superior current handling capability at 1.52 A, exceeding the main part's 1.24 A rating. The saturation current of 1.56 A supports higher transient conditions. DC resistance of 180 mOhm is within acceptable tolerance relative to the 156 mOhm specification. The extended operating temperature range of -55°C to 125°C provides additional thermal margin. Pulse Electronics maintains active product status with RoHS3 compliance and REACH unaffected designation. This part is suitable for applications requiring enhanced current capacity or extended low-temperature operation.

SDCL1V3012-4R7M-R (Eaton - Electronics Division)

This substitute maintains identical DC resistance of 156 mOhm and matching operating temperature range of -40°C to 125°C. However, the current rating of 0.8 A and saturation current of 0.95 A are below the main part specification. The semi-shielded configuration differs from the fully shielded design of the main part, which may affect electromagnetic interference characteristics. Height dimension of 1.30 mm exceeds the main part's 1.20 mm maximum seated height by 0.10 mm. Eaton maintains active product status with RoHS compliance and REACH unaffected designation. This part is suitable only for applications with current requirements not exceeding 0.8 A and where semi-shielded performance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can BWVF003030124R7M00 directly replace SWPA3012S4R7MT in all applications?

A: BWVF003030124R7M00 provides electrical compatibility with superior current ratings and extended temperature range. Both parts share identical inductance value, tolerance, core material, package footprint, and moisture sensitivity level. The 24 mOhm increase in DC resistance (180 mOhm vs. 156 mOhm) remains within acceptable engineering margins for most applications. Verification of thermal performance and current distribution is required for designs operating at maximum current specifications.

Q: Is SDCL1V3012-4R7M-R suitable for high-current applications?

A: No. SDCL1V3012-4R7M-R is rated for 0.8 A continuous current, which is 35% below the main part's 1.24 A specification. This part is restricted to applications with current requirements not exceeding 0.8 A. The saturation current of 0.95 A provides minimal margin above the rated current. This part is not suitable for designs requiring the full 1.24 A capability of the main part.

Q: What is the impact of semi-shielded versus fully shielded configuration?

A: SDCL1V3012-4R7M-R employs semi-shielded construction compared to the fully shielded design of SWPA3012S4R7MT. Semi-shielded inductors provide reduced electromagnetic shielding effectiveness. Applications sensitive to electromagnetic interference or requiring specific shielding performance must evaluate this difference. Fully shielded parts are preferred for noise-sensitive circuits.

Q: Are there package footprint differences between substitutes?

A: SWPA3012S4R7MT and BWVF003030124R7M00 share identical footprint dimensions of 3.00 mm x 3.00 mm with maximum seated heights of 1.20 mm. SDCL1V3012-4R7M-R maintains the same 3.00 mm x 3.00 mm footprint but has a maximum seated height of 1.30 mm, representing a 0.10 mm increase. This height difference may affect PCB layout clearance in space-constrained designs.

Q: What compliance certifications apply to each substitute?

A: SWPA3012S4R7MT carries MSL 1 (Unlimited) rating. BWVF003030124R7M00 is RoHS3 compliant and REACH unaffected. SDCL1V3012-4R7M-R is RoHS compliant and REACH unaffected. All three parts are classified under ECCN EAR99 and HTSUS 8504.50.8000. Compliance verification with specific regulatory requirements is necessary for end-use applications.

Q: How do inductance test frequencies affect part selection?

A: SWPA3012S4R7MT and SDCL1V3012-4R7M-R are tested at 100 kHz, while BWVF003030124R7M00 is tested at 1 MHz. Inductance values may vary slightly across frequency ranges due to core material characteristics. For applications operating at frequencies significantly different from test conditions, frequency-dependent performance curves should be consulted from manufacturer datasheets.