SWPA4018S101MT Equivalent & Substitute Parts

Part Overview

The SWPA4018S101MT is a 100 µH shielded drum core wirewound inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd. This surface mount component is rated for 250 mA continuous current with a maximum DC resistance of 2.275 Ohm and operates across the temperature range of -40°C to 125°C. The part is currently active in production and available in tape and reel packaging.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component selection based on specific application requirements within the defined electrical and mechanical parameter space.

Substiute Parts

SWPA4018S101MT

Shenzhen Sunlord Electronics Co., Ltd.In Stock: 1003SWPA4018S101MT Datasheet

Current PartRFQ

BWVS00404018101M00

Pulse ElectronicsIn Stock: 2035BWVS00404018101M00 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SWPA4018S101MT are identified based on strict equivalence of core electrical and mechanical parameters. The substitution criteria are:

Primary Equivalence Parameters:

• Inductance value: 100 µH (fixed)
• Inductance tolerance: ±20% (fixed)
• Core material: Ferrite (fixed)
• Shielding: Shielded (fixed)
• Mounting type: Surface Mount (fixed)
• Package footprint: 4.00 x 4.00 mm (fixed)
• Inductance test frequency: 100 kHz (fixed)
• Moisture sensitivity level: 1 (Unlimited) (fixed)

Allowable Parameter Variations:

• Current rating: Substitute parts must equal or exceed 250 mA
• Saturation current (Isat): Substitute parts must equal or exceed 400 mA
• DC resistance (DCR): Substitute parts must not exceed 2.275 Ohm maximum
• Operating temperature range: Substitute parts must encompass or exceed -40°C to 125°C
• Height (seated): Allowable variation within surface mount assembly constraints
• Product status: Active production status required

The BWVS00404018101M00 from Pulse Electronics meets all primary equivalence parameters and satisfies allowable variations in current rating, saturation current, and DC resistance.

Parameter Comparison

Engineering Selection Recommendations

SWPA4018S101MT (Shenzhen Sunlord Electronics)

Select this part when the original design specification requires the Sunlord SWPA series inductor. The part is active in production with 966 units in current inventory. This component is suitable for applications requiring a 100 µH shielded ferrite inductor with 250 mA current rating and 2.275 Ohm maximum DC resistance in a 4.00 x 4.00 mm surface mount package.

BWVS00404018101M00 (Pulse Electronics)

This substitute part is suitable when design requirements permit component substitution and when enhanced electrical performance or extended environmental specifications are beneficial. The BWVS00404018101M00 provides superior current handling (380 mA versus 250 mA), lower DC resistance (1.5 Ohm versus 2.275 Ohm maximum), extended low-temperature operation (-55°C versus -40°C minimum), and documented RoHS3 and REACH compliance. The part is active in production with 2009 units in current inventory. The maximum seated height of 2.00 mm versus 1.80 mm must be evaluated for PCB assembly clearance in space-constrained applications.

Both parts share identical inductance value, tolerance, core material, shielding, mounting type, and package footprint, establishing them as direct functional equivalents within the specified parameter space.

Frequently Asked Questions (FAQ)

Q: Can the BWVS00404018101M00 be used as a direct replacement for the SWPA4018S101MT in existing designs?

A: The BWVS00404018101M00 is functionally equivalent for the core electrical parameters: 100 µH inductance, ±20% tolerance, ferrite core, shielded construction, and 100 kHz test frequency. The substitute part exceeds the current rating and saturation current requirements and provides lower DC resistance. The maximum seated height increases from 1.80 mm to 2.00 mm; this 0.20 mm difference must be evaluated against PCB assembly constraints and clearance requirements in the target application.

Q: What are the key electrical advantages of the BWVS00404018101M00 substitute?

A: The BWVS00404018101M00 provides three electrical advantages: (1) current rating of 380 mA versus 250 mA, (2) saturation current of 460 mA versus 400 mA, and (3) DC resistance of 1.5 Ohm versus 2.275 Ohm maximum. These parameters result in reduced power dissipation and improved current handling capacity within the same package footprint.

Q: Are there environmental or compliance differences between these parts?

A: The BWVS00404018101M00 provides documented RoHS3 compliance and REACH unaffected status. The SWPA4018S101MT does not specify these compliance certifications in the provided data. The BWVS00404018101M00 also extends the minimum operating temperature to -55°C compared to -40°C for the SWPA4018S101MT. Both parts operate to 125°C maximum and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the impact of the 0.20 mm height difference on PCB assembly?

A: The BWVS00404018101M00 has a maximum seated height of 2.00 mm compared to 1.80 mm for the SWPA4018S101MT. This 0.20 mm increase must be evaluated against available clearance above the component on the PCB, proximity to other components, and conformal coating or potting requirements. In most standard surface mount assemblies, this difference is within typical tolerance stacks; however, space-constrained designs must verify clearance.

Q: Are both parts available in the same packaging format?

A: Both the SWPA4018S101MT and BWVS00404018101M00 are supplied in Tape & Reel (TR) packaging suitable for automated assembly. Both parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture control requirements during storage or handling.

Q: What is the basis for substitution between these two parts?

A: Substitution is based on strict equivalence of primary electrical and mechanical parameters: identical inductance (100 µH), tolerance (±20%), core material (ferrite), shielding (shielded), mounting type (surface mount), package footprint (4.00 x 4.00 mm), and test frequency (100 kHz). Allowable variations include current rating, saturation current, and DC resistance, where the substitute part meets or exceeds the original specification. Both parts are active in production and carry MSL 1 rating.