SWPA4018S2R2MT Equivalent & Substitute Parts

Part Overview

The SWPA4018S2R2MT is a 2.2 µH shielded drum core wirewound inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd. This surface mount component is rated for 1.65 A continuous current with a maximum DC resistance of 59 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently active in production with substantial inventory availability.

Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit selection from qualified equivalent components. Substitutes maintain functional compatibility through matching or exceeding critical electrical and mechanical parameters.

Substiute Parts

SWPA4018S2R2MT

Shenzhen Sunlord Electronics Co., Ltd.In Stock: 68273SWPA4018S2R2MT Datasheet

Current PartRFQ

BWVS004040182R2M00

Pulse ElectronicsIn Stock: 13511BWVS004040182R2M00 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SWPA4018S2R2MT is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 2.2 µH
• Inductance tolerance: ±20%
• Core material: Ferrite
• Shielding: Shielded
• Mounting type: Surface Mount
• Package dimensions: 4.00 × 4.00 mm footprint
• Inductance test frequency: 100 kHz

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 1.65 A
• DC resistance: Substitute must not exceed 59 mOhm (lower values are acceptable)
• Operating temperature range: Substitute must cover or exceed -40°C to 125°C
• Height: Substitute must fit within PCB assembly constraints

The BWVS004040182R2M00 from Pulse Electronics qualifies as a direct substitute based on matching inductance, tolerance, core material, shielding, mounting type, and footprint dimensions. The substitute provides enhanced current rating (2.5 A versus 1.65 A) and comparable DC resistance (60 mOhm versus 59 mOhm maximum), with extended lower temperature rating (-55°C versus -40°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SWPA4018S2R2MT): The SWPA4018S2R2MT remains the specified component when design validation has been performed against this exact part number and when supply chain continuity with the original manufacturer is required. This part is active in production with high inventory levels (68,200 units in stock).

Substitute Part Selection (BWVS004040182R2M00): The BWVS004040182R2M00 is suitable for selection when:

• The primary part is unavailable or subject to extended lead times
• Design specifications permit the use of a higher current-rated component (2.5 A versus 1.65 A)
• The extended lower operating temperature range (-55°C versus -40°C) provides additional environmental margin
• PCB assembly height tolerance accommodates the 2.00 mm seated height (0.20 mm higher than primary part)
• RoHS3 compliance and REACH unaffected status are required for the application

Both parts are active products with current manufacturing status. The substitute part offers enhanced electrical performance margins and broader environmental operating range while maintaining functional equivalence through matching inductance, tolerance, core material, shielding, and footprint specifications.

Frequently Asked Questions (FAQ)

Q: Can the BWVS004040182R2M00 be used as a direct replacement for the SWPA4018S2R2MT?

A: Yes. Both components share identical inductance (2.2 µH), tolerance (±20%), core material (ferrite), shielding, mounting type (surface mount), and footprint dimensions (4.00 × 4.00 mm). The substitute provides equal or superior performance in current rating, DC resistance, and operating temperature range.

Q: What is the difference in height between these two parts?

A: The SWPA4018S2R2MT has a maximum seated height of 1.80 mm, while the BWVS004040182R2M00 has a maximum seated height of 2.00 mm. This 0.20 mm difference must be verified against PCB assembly clearance requirements and component placement constraints.

Q: Are there any compliance differences between the two parts?

A: The BWVS004040182R2M00 carries explicit RoHS3 compliance and REACH unaffected status certifications. Both parts are classified under ECCN EAR99 and HTSUS 8504.50.8000. Compliance requirements for your specific application should be verified against these designations.

Q: Why does the substitute part have a higher current rating?

A: The BWVS004040182R2M00 is rated for 2.5 A continuous current compared to 1.65 A for the SWPA4018S2R2MT. This represents a design characteristic of the Pulse Electronics component and provides additional thermal and electrical margin when used in applications requiring the lower current rating.

Q: What is the saturation current difference?

A: The SWPA4018S2R2MT has a saturation current (Isat) of 3.2 A, while the BWVS004040182R2M00 has an Isat of 2.8 A. Both values exceed their respective continuous current ratings and are suitable for typical inductor applications. Application-specific peak current requirements should be evaluated against these specifications.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the SWPA4018S2R2MT and BWVS004040182R2M00 are supplied in Tape & Reel (TR) packaging suitable for automated PCB assembly processes.

Q: What is the moisture sensitivity level for these inductors?

A: Both parts carry a Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.