SWS-0.25-256 Equivalent & Substitute Parts

Part Overview

The SWS-0.25-256 is a 256 µH unshielded toroidal inductor manufactured by Amgis, LLC, rated for 250 mA with 2.2Ohm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SWS-0.25-256

Amgis, LLCIn Stock: 749SWS-0.25-256 Datasheet

Current PartRFQ

SH150S-0.25-256

Amgis, LLCIn Stock: 934SH150S-0.25-256 Datasheet

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PE-53809SNL

Pulse ElectronicsIn Stock: 1474PE-53809SNL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SWS-0.25-256 are qualified based on the following critical parameters:

• Inductance value: 256 µH (exact match required)
• Inductance tolerance: ±20% (exact match required)
• Current rating: 250 mA (exact match required)
• DC resistance: 2.2Ohm (exact match required)
• Mounting type: Surface Mount (exact match required)
• Operating temperature range: minimum -40°C to 125°C coverage
• RoHS compliance: ROHS3 Compliant (exact match required)

Two substitute parts meet these electrical and compliance criteria. The SH150S-0.25-256 from Amgis, LLC maintains identical electrical specifications with active product status. The PE-53809SNL from Pulse Electronics provides equivalent electrical performance with the distinction of shielded construction and extended temperature rating to 130°C.

Parameter Comparison

Engineering Selection Recommendations

The SH150S-0.25-256 is the primary substitute for the obsolete SWS-0.25-256. Both parts are manufactured by Amgis, LLC with identical electrical specifications, inductance tolerance, current rating, and DC resistance. The SH150S-0.25-256 carries active product status, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and operate within the required temperature range.

The PE-53809SNL from Pulse Electronics provides an alternative substitute with equivalent electrical performance. This part features shielded construction, which differs from the unshielded design of the original part. The PE-53809SNL offers an extended operating temperature range to 130°C and unlimited moisture sensitivity rating. Physical dimensions are comparable to the SH150S-0.25-256, though the PE-53809SNL has greater seated height at 9.14mm.

Selection between SH150S-0.25-256 and PE-53809SNL depends on circuit requirements regarding electromagnetic shielding and physical space constraints. Both parts satisfy the core electrical and compliance requirements for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the SH150S-0.25-256 directly replace the SWS-0.25-256?

A: Yes. The SH150S-0.25-256 matches all critical electrical parameters: 256 µH inductance, ±20% tolerance, 250 mA current rating, and 2.2Ohm DC resistance. Both are unshielded toroidal inductors with surface mount packaging and ROHS3 compliance. The primary difference is product status—SH150S-0.25-256 is active while SWS-0.25-256 is obsolete.

Q: What is the key difference between SH150S-0.25-256 and PE-53809SNL?

A: The PE-53809SNL features shielded construction, whereas both the SWS-0.25-256 and SH150S-0.25-256 are unshielded. Electrical specifications remain identical. The PE-53809SNL has greater physical height (9.14mm vs. 6.75mm for the original part) and operates to 130°C compared to 125°C for the original.

Q: Are there packaging differences between these substitutes?

A: Yes. The SH150S-0.25-256 is supplied in trays, while the PE-53809SNL is supplied in tubes. The original SWS-0.25-256 packaging specification is not provided. Verify packaging requirements with your procurement process.

Q: Do physical dimensions affect substitution?

A: Physical dimensions differ across all three parts. The original SWS-0.25-256 measures 10.00mm x 10.00mm with 6.75mm seated height. Both substitutes are slightly larger: SH150S-0.25-256 at 11.20mm x 11.00mm with 7.65mm height, and PE-53809SNL at 11.18mm x 11.05mm with 9.14mm height. Verify PCB layout compatibility before selection.

Q: Which substitute has better moisture sensitivity performance?

A: Both the SWS-0.25-256 and PE-53809SNL carry MSL 1 (Unlimited), while the SH150S-0.25-256 carries MSL 2 (1 Year). MSL 1 rated parts have no moisture sensitivity restrictions during storage and handling.