SWC-4.9-23 Equivalent & Substitute Parts

Part Overview

The SWC-4.9-23 is a 22.8 µH unshielded toroidal inductor manufactured by Amgis, LLC, rated for 4.9 A continuous current with 36 mOhm DC resistance. This through-hole component operates across -40°C to 130°C and is specified for 10 kHz inductance testing. The part is active in production and ROHS3 compliant, making it suitable for industrial and commercial power conversion applications requiring fixed inductance values in compact radial configurations.

Substitute parts are identified when electrical parameters (inductance, current rating, DC resistance, tolerance, operating temperature) and mechanical compatibility (mounting type, package footprint) align with application requirements, while allowing for variations in shielding characteristics and packaging formats.

Substiute Parts

SWC-4.9-23

Amgis, LLCIn Stock: 1060SWC-4.9-23 Datasheet

Current PartRFQ

P0841NL

Pulse ElectronicsIn Stock: 2701P0841NL Datasheet

DirectRFQ

P0841SNLT

Pulse ElectronicsIn Stock: 3892P0841SNLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SWC-4.9-23 is determined by strict equivalence in the following electrical parameters: inductance value (22.8 µH), current rating (4.9 A), DC resistance (36 mOhm), tolerance (±20%), and operating temperature range (-40°C to 130°C). All identified substitutes maintain these core electrical specifications.

Mechanical compatibility is evaluated based on mounting type and toroidal form factor. The SWC-4.9-23 uses through-hole radial mounting; substitutes may employ alternative mounting technologies (surface mount) or packaging formats (tape & reel versus tube) provided the electrical performance remains equivalent.

Shielding characteristics are not restrictive substitution criteria. The main part is unshielded; substitute parts may be shielded without affecting functional equivalence, as shielding reduces EMI coupling without altering inductance or current-handling capacity.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SWC-4.9-23, P0841NL, and P0841SNLT—meet ROHS3 compliance and REACH unaffected status, qualifying them for regulated applications. Selection between these parts depends on circuit board assembly methodology and physical space constraints.

P0841NL (Pulse Electronics) is the direct through-hole equivalent to SWC-4.9-23. Both use identical mounting technology and package footprint (radial, vertical open configuration). The primary difference is shielding: P0841NL adds electromagnetic shielding, which reduces radiated emissions without affecting inductance or current capacity. This part is supplied in tube packaging.

P0841SNLT (Pulse Electronics) is a surface-mount alternative with identical electrical specifications but requires SMD assembly infrastructure. Its nonstandard package footprint (0.940" × 0.940" × 0.400" height) differs significantly from the through-hole radial geometry, necessitating circuit board redesign. This part is supplied in tape & reel format for automated pick-and-place assembly.

Selection criteria: Use P0841NL for direct through-hole board replacement. Use P0841SNLT only when surface-mount assembly is required and board layout permits the larger footprint.

Frequently Asked Questions (FAQ)

Q: Can P0841NL replace SWC-4.9-23 in an existing circuit board?

A: Yes. P0841NL maintains identical electrical specifications (22.8 µH, 4.9 A, 36 mOhm) and uses the same through-hole radial mounting configuration. The added shielding in P0841NL does not affect functional compatibility. Direct substitution is possible without circuit modification.

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

A: Shielding reduces electromagnetic interference (EMI) coupling to adjacent circuit elements. Electrically, inductance, current rating, and DC resistance remain unchanged. Shielded parts (P0841NL, P0841SNLT) are suitable for noise-sensitive applications; unshielded parts (SWC-4.9-23) are appropriate for general-purpose filtering and energy storage.

Q: Can P0841SNLT replace SWC-4.9-23 without board redesign?

A: No. P0841SNLT requires surface-mount assembly and uses a nonstandard package footprint incompatible with through-hole radial mounting. Board layout and assembly process must be redesigned to accommodate this part.

Q: Are all three parts available in equivalent quantities?

A: Inventory levels differ. SWC-4.9-23 has 1019 pcs in stock (tray packaging). P0841NL has 2640 pcs (tube packaging). P0841SNLT has 3808 pcs (tape & reel). Packaging format affects handling and assembly automation compatibility.

Q: Do all parts meet the same compliance standards?

A: Yes. SWC-4.9-23, P0841NL, and P0841SNLT are all ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and commercial applications.