SWS-0.44-252 Equivalent & Substitute Parts

Part Overview

The SWS-0.44-252 is a 252 µH unshielded toroidal inductor manufactured by Amgis, LLC, designed for surface mount applications with a current rating of 440 mA and DC resistance of 900mOhm. This component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 704 units available in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

SWS-0.44-252

Amgis, LLCIn Stock: 724SWS-0.44-252 Datasheet

Current PartRFQ

PE-53818SNL

Pulse ElectronicsIn Stock: 1125PE-53818SNL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PE-53818SNL from Pulse Electronics qualifies as a substitute based on the following matched electrical parameters: 252 µH inductance, ±20% tolerance, 440 mA current rating, and 900mOhm DC resistance. Both parts are surface mount toroidal inductors with nonstandard packaging and ROHS3 compliance.

The primary difference between the main part and substitute is shielding configuration. The SWS-0.44-252 is unshielded, while the PE-53818SNL is shielded. This distinction affects electromagnetic interference characteristics and physical dimensions. The substitute operates across a slightly extended temperature range (-40°C to 130°C versus -40°C to 125°C).

Substitution is valid when circuit design permits the use of a shielded inductor and when the dimensional differences (main part: 12.80mm × 12.80mm × 7.25mm maximum height; substitute: 14.48mm × 14.35mm × 9.14mm maximum height) are accommodated in the PCB layout.

Parameter Comparison

Engineering Selection Recommendations

Both the SWS-0.44-252 and PE-53818SNL meet ROHS3 compliance and REACH unaffected status, making them suitable for regulated applications. The choice between these parts depends on electromagnetic interference requirements and available PCB space.

Select the SWS-0.44-252 when unshielded operation is acceptable and compact dimensions are required. Select the PE-53818SNL when shielded performance is necessary to minimize radiated emissions or susceptibility to external magnetic fields, provided the larger footprint (14.48mm × 14.35mm) and increased height (9.14mm) can be accommodated. The extended operating temperature range of the PE-53818SNL (-40°C to 130°C) offers additional margin in high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can PE-53818SNL replace SWS-0.44-252 in all applications?

A: Electrical substitution is valid based on matched inductance, tolerance, current rating, and DC resistance. However, the shielded design of PE-53818SNL introduces different electromagnetic characteristics. Verify that shielding does not conflict with circuit requirements. Confirm PCB layout accommodates the larger dimensions: 14.48mm × 14.35mm footprint and 9.14mm maximum height versus 12.80mm × 12.80mm and 7.25mm for the original part.

Q: What are the dimensional constraints for substitution?

A: The SWS-0.44-252 occupies 12.80mm × 12.80mm with 7.25mm seated height. The PE-53818SNL requires 14.48mm × 14.35mm with 9.14mm seated height. Substitution is feasible only if the PCB layout provides sufficient clearance for the larger substitute.

Q: Are there differences in core material between these parts?

A: The SWS-0.44-252 specifies iron powder core material. The PE-53818SNL core material is not specified in the provided data. Both parts deliver the same inductance and tolerance specifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SWS-0.44-252 and PE-53818SNL are ROHS3 compliant, REACH unaffected, classified as EAR99, and share the same HTSUS code (8504.50.4000). Both have MSL rating of 1 (Unlimited).

Q: What is the primary functional difference between shielded and unshielded versions?

A: The shielded PE-53818SNL reduces radiated electromagnetic emissions and provides immunity to external magnetic field interference. The unshielded SWS-0.44-252 has no such shielding. Select based on EMI/EMC requirements of the specific application.