SWPA8040S2R2NT Equivalent & Substitute Parts

Part Overview

The SWPA8040S2R2NT is a 2.2 µH shielded drum core wirewound inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd. This surface mount component is rated for 5.15 A continuous current with a maximum DC resistance of 16mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status with 7466 units currently in stock.

Substitute parts are identified when equivalent inductance values, core materials, shielding characteristics, and physical dimensions align with the original specification, while accommodating variations in current ratings, DC resistance, and temperature operating ranges within acceptable engineering tolerances.

Substiute Parts

SWPA8040S2R2NT

Shenzhen Sunlord Electronics Co., Ltd.In Stock: 7568SWPA8040S2R2NT Datasheet

Current PartRFQ

BWVS008080402R2M00

Pulse ElectronicsIn Stock: 1061BWVS008080402R2M00 Datasheet

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SDCH1V8040-2R2M-R

Eaton - Electronics DivisionIn Stock: 1764SDCH1V8040-2R2M-R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SWPA8040S2R2NT are qualified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 2.2 µH (exact match required)
• Core material: Ferrite (electromagnetic performance consistency)
• Physical dimensions: 8.00mm x 8.00mm x 4.20mm (PCB layout compatibility)
• Mounting type: Surface Mount (assembly process compatibility)
• Inductance test frequency: 100 kHz (measurement standard alignment)

Secondary Compatibility Parameters:

• Shielding classification: Shielded or Semi-Shielded (EMI containment)
• Current rating: Equal to or greater than 5.15 A (thermal and electrical headroom)
• DC resistance: Lower or equal to 16mOhm (power dissipation consideration)
• Operating temperature range: Minimum -40°C to 125°C coverage
• Tolerance: ±20% or ±30% (inductance accuracy)

Substitute parts must maintain ferrite core construction and surface mount configuration. Variations in current saturation ratings, DC resistance values, and shielding approach (semi-shielded versus fully shielded) are permissible when the primary electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

BWVS008080402R2M00 (Pulse Electronics): This substitute provides improved electrical performance with 7.2 A current rating and reduced DC resistance of 11.5mOhm compared to the original 16mOhm specification. The part maintains full shielding and ferrite core construction with identical physical dimensions. Inductance tolerance is tightened to ±20%, providing superior accuracy. Extended operating temperature range to -55°C offers additional thermal margin. RoHS3 compliance and REACH unaffected status confirm regulatory alignment. This substitute is suitable for applications requiring lower power dissipation and higher current capacity.

SDCH1V8040-2R2M-R (Eaton - Electronics Division): This substitute delivers 6.9 A current rating with 13mOhm DC resistance, positioned between the original and Pulse specifications. Semi-shielded construction maintains EMI containment while reducing core size. Inductance tolerance of ±20% improves measurement accuracy. Operating temperature range matches the original -40°C to 125°C specification. RoHS3 compliance and REACH unaffected status confirm regulatory alignment. This substitute is suitable for applications where moderate current capacity and balanced EMI performance are required.

All three parts maintain Active product status, ferrite core construction, 100 kHz inductance test frequency, and identical 8.00 x 8.00 x 4.20mm physical dimensions for direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can BWVS008080402R2M00 directly replace SWPA8040S2R2NT in all applications?

A: Direct replacement is possible when the application operates at or below 5.15 A continuous current. The BWVS008080402R2M00 provides superior performance with lower DC resistance (11.5mOhm versus 16mOhm) and higher current rating (7.2 A). Identical physical dimensions and ferrite core material ensure PCB compatibility. Tighter inductance tolerance (±20% versus ±30%) may improve circuit performance in precision applications.

Q: What is the difference between shielded and semi-shielded inductors?

A: Shielded inductors (SWPA8040S2R2NT and BWVS008080402R2M00) provide complete electromagnetic field containment, minimizing EMI radiation and external field susceptibility. Semi-shielded inductors (SDCH1V8040-2R2M-R) offer partial shielding with reduced core volume, resulting in lower DC resistance and improved thermal performance at the cost of slightly reduced EMI containment. Selection depends on circuit EMI requirements and thermal constraints.

Q: Are the substitute parts compatible with the original packaging format?

A: The SWPA8040S2R2NT is supplied in Cut Tape (CT) and Digi-Reel® packaging. Both substitute parts (BWVS008080402R2M00 and SDCH1V8040-2R2M-R) are supplied in standard Tape & Reel (TR) format. Packaging format does not affect component electrical or mechanical performance; it impacts only procurement and assembly logistics.

Q: What is the significance of the ±20% versus ±30% inductance tolerance?

A: Inductance tolerance defines the acceptable range of actual inductance values around the nominal 2.2 µH specification. The original SWPA8040S2R2NT permits ±30% variation (1.54 to 2.86 µH), while both substitutes limit variation to ±20% (1.76 to 2.64 µH). Tighter tolerance improves circuit predictability and reduces design margin requirements in precision filtering and impedance matching applications.

Q: Can SDCH1V8040-2R2M-R be used in high-EMI environments?

A: The SDCH1V8040-2R2M-R employs semi-shielded construction, which provides moderate EMI containment. Applications requiring maximum EMI isolation should use fully shielded alternatives (SWPA8040S2R2NT or BWVS008080402R2M00). Semi-shielded construction is suitable for general-purpose switching power supplies and DC-DC converters where moderate EMI performance is acceptable.

Q: What is the impact of lower DC resistance on thermal performance?

A: Lower DC resistance reduces I²R power dissipation. The BWVS008080402R2M00 (11.5mOhm) dissipates approximately 28% less heat than the original SWPA8040S2R2NT (16mOhm) at identical 5.15 A current. This reduction improves thermal stability, extends component life, and reduces cooling requirements in thermally constrained applications.

Q: Are all three parts RoHS compliant?

A: The SWPA8040S2R2NT product data does not specify RoHS status. Both substitute parts (BWVS008080402R2M00 and SDCH1V8040-2R2M-R) are confirmed RoHS3 compliant and REACH unaffected. Regulatory compliance verification is required for the original part through the manufacturer or authorized distributor.