SWT-0.46-78 Equivalent & Substitute Parts

Part Overview

The SWT-0.46-78 is a 78 µH unshielded toroidal inductor manufactured by Amgis, LLC, rated for 460 mA with 800mOhm DC resistance. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates across the temperature range of -40°C to 125°C and is RoHS3 compliant.

Substiute Parts

SWT-0.46-78

Amgis, LLCIn Stock: 1143SWT-0.46-78 Datasheet

Current PartRFQ

SH150T-0.46-78

Amgis, LLCIn Stock: 1169SH150T-0.46-78 Datasheet

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PE-53812NL

Pulse ElectronicsIn Stock: 893PE-53812NL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SWT-0.46-78 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance: 78 µH (exact match required)
• Tolerance: ±20% (exact match required)
• Current Rating: 460 mA (exact match required)
• DC Resistance: 800mOhm (exact match required)
• Type: Toroidal (exact match required)
• Mounting Type: Through Hole (exact match required)

Allowable Variations:

• Shielding: Unshielded or Shielded (both acceptable for electrical equivalence)
• Package/Case orientation: Radial configurations with different terminal positions
• Core material: Iron Powder or equivalent magnetic material
• Operating temperature range: Equal to or exceeding -40°C ~ 125°C
• Physical dimensions: Variations permitted within through-hole mounting constraints

Parameter Comparison

Engineering Selection Recommendations

SH150T-0.46-78 (Amgis, LLC): This substitute provides identical electrical specifications and operating temperature range. Both parts are manufactured by Amgis, LLC and maintain ROHS3 compliance. The primary difference is product status: SH150T-0.46-78 is active with current inventory availability. Physical dimensions are larger, requiring PCB layout verification for space-constrained applications. Packaging is supplied in Tray format.

PE-53812NL (Pulse Electronics): This substitute matches all critical electrical parameters and exceeds the operating temperature range (-40°C ~ 130°C). The key distinction is shielding: PE-53812NL is shielded, whereas SWT-0.46-78 is unshielded. Shielded construction may alter electromagnetic coupling characteristics in the circuit. Physical dimensions and height differ from the original part. Packaging is supplied in Tube format. ROHS3 and REACH compliance are maintained.

Frequently Asked Questions (FAQ)

Q: Can SH150T-0.46-78 be used as a direct replacement for SWT-0.46-78?

A: SH150T-0.46-78 is electrically equivalent with identical inductance, current rating, and DC resistance. Both are unshielded toroidal inductors with matching tolerance and operating temperature. PCB layout must accommodate the larger physical dimensions (11.00mm x 11.20mm vs. 8.60mm x 8.60mm).

Q: What is the impact of using PE-53812NL, which is shielded, in place of the unshielded SWT-0.46-78?

A: PE-53812NL maintains all critical electrical parameters. Shielding reduces electromagnetic radiation and susceptibility to external fields. Circuit behavior may differ if the original design relied on unshielded coupling characteristics. Physical dimensions also differ, requiring PCB verification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SH150T-0.46-78 and PE-53812NL are both ROHS3 compliant, matching the compliance status of SWT-0.46-78.

Q: What are the packaging differences among these parts?

A: SWT-0.46-78 packaging is not specified. SH150T-0.46-78 is supplied in Tray packaging. PE-53812NL is supplied in Tube packaging. Packaging selection affects handling, storage, and assembly processes.

Q: Can PE-53812NL operate at higher temperatures than SWT-0.46-78?

A: PE-53812NL operates across -40°C ~ 130°C, exceeding the -40°C ~ 125°C range of SWT-0.46-78. This provides 5°C additional margin at the upper temperature limit.