SWPA252012S3R3MT Equivalent & Substitute Parts

Part Overview

The SWPA252012S3R3MT is a 3.3 µH shielded drum core wirewound inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd. This surface mount component is rated for 1.04 A continuous current with a maximum DC resistance of 264mOhm 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 equivalent electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Inductance	3.3	µH
Inductance Tolerance	±20%	—
Current Rating	1.04	A
DC Resistance (Max)	264	mOhm
Saturation Current	1.61	A
Core Material	Ferrite	—
Shielding	Shielded	—
Package / Case	1008 (2520 Metric)	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40°C to 125°C	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SWPA252012S3R3MT is determined by the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 3.3 µH with ±20% tolerance to ensure circuit functionality.

Core Material and Shielding: Ferrite core material with shielding is required to maintain electromagnetic compatibility and prevent interference in the application.

Package and Mounting: Surface mount configuration in 1008 (2520 Metric) package ensures mechanical and electrical compatibility with the PCB layout.

Current Handling: The substitute part must support the application's current requirements. The main part is rated for 1.04 A continuous current with 1.61 A saturation current.

DC Resistance: The substitute part's DC resistance directly affects circuit performance and power dissipation characteristics.

Operating Temperature: The substitute must support the required operating temperature range to ensure reliability across the application's thermal environment.

Moisture Sensitivity: MSL 1 rating indicates unlimited moisture sensitivity, allowing storage without desiccant requirements.

The BWVF002520123R3M00 from Pulse Electronics meets these substitution criteria with equivalent inductance, core material, shielding, package dimensions, and moisture sensitivity specifications.

Parameter Comparison

Parameter	SWPA252012S3R3MT (Main)	BWVF002520123R3M00 (Substitute)	Compatibility
Manufacturer	Shenzhen Sunlord Electronics Co., Ltd.	Pulse Electronics	Different manufacturers
Inductance	3.3 µH	3.3 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	1.04 A	1.5 A	Substitute rated higher
Saturation Current	1.61 A	1.45 A	Substitute rated lower
DC Resistance (Max)	264 mOhm	130 mOhm	Substitute has lower resistance
Core Material	Ferrite	Ferrite	Equivalent
Shielding	Shielded	Shielded	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	1008 (2520 Metric)	Nonstandard	Physical dimensions equivalent; package designation differs
Size / Dimension	0.098" L x 0.079" W (2.50mm x 2.00mm)	0.098" L x 0.079" W (2.50mm x 2.00mm)	Equivalent
Height - Seated (Max)	0.047" (1.20mm)	0.049" (1.25mm)	Substitute 0.05mm taller; within tolerance for most applications
Operating Temperature Range	-40°C to 125°C	-55°C to 125°C	Substitute supports extended low-temperature range
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Active	Active	Both in active production
RoHS Status	Not specified	ROHS3 Compliant	Substitute provides documented compliance
REACH Status	Not specified	REACH Unaffected	Substitute provides documented compliance

Engineering Selection Recommendations

Primary Part Selection: The SWPA252012S3R3MT remains the preferred choice when available due to established supply chain relationships and proven field performance.

Substitute Part Selection: The BWVF002520123R3M00 is a valid substitute when the primary part is unavailable. The substitute provides the following advantages:

Lower DC resistance (130 mOhm vs. 264 mOhm) reduces power dissipation and improves circuit efficiency
Higher continuous current rating (1.5 A vs. 1.04 A) provides additional design margin
Extended low-temperature operating range (-55°C vs. -40°C) supports broader environmental applications
Documented RoHS3 and REACH compliance certifications

Compatibility Considerations: The substitute part's saturation current (1.45 A) is lower than the main part (1.61 A). Applications operating near saturation limits require verification that the substitute's saturation current remains above the maximum expected circuit current. The substitute's maximum seated height (1.25mm) is 0.05mm greater than the main part (1.20mm); this difference is negligible for standard PCB assembly processes.

Compliance: Both parts carry EAR99 classification and fall under HTSUS code 8504.50.8000. The substitute provides explicit RoHS3 and REACH compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the BWVF002520123R3M00 be used as a direct replacement for the SWPA252012S3R3MT?

A: Yes, the BWVF002520123R3M00 is a direct substitute for surface mount applications requiring 3.3 µH inductance in the 1008 (2520 Metric) package. Both parts share identical inductance values, tolerance, core material, shielding, physical dimensions, and moisture sensitivity ratings. The substitute is suitable for applications operating at or below 1.04 A continuous current.

Q: What is the impact of the lower DC resistance in the substitute part?

A: The BWVF002520123R3M00 has 130 mOhm maximum DC resistance compared to 264 mOhm in the main part. Lower DC resistance reduces resistive losses and heat generation in the inductor. This improves circuit efficiency and reduces thermal stress on the component. Applications sensitive to inductor losses benefit from this characteristic.

Q: Are there height differences between these parts?

A: The substitute part has a maximum seated height of 1.25mm compared to 1.20mm for the main part. This 0.05mm difference is within standard PCB assembly tolerances and does not affect placement or soldering processes for typical applications.

Q: What is the significance of the saturation current difference?

A: The main part has a saturation current of 1.61 A, while the substitute is rated at 1.45 A. Saturation current represents the point at which the inductor's inductance begins to degrade. Applications operating near or above 1.45 A require confirmation that the substitute's saturation margin remains acceptable for the circuit design.

Q: Does the substitute support the same temperature range?

A: The substitute supports an extended low-temperature range of -55°C to 125°C compared to the main part's -40°C to 125°C. Both parts support the upper temperature limit of 125°C. Applications requiring operation below -40°C benefit from the substitute's extended range.

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

A: Both parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly. The main part is designated as 1008 (2520 Metric) package, while the substitute is designated as Nonstandard package. However, physical dimensions are identical (2.50mm L x 2.00mm W), ensuring compatibility with the same PCB footprint and pick-and-place equipment.

Q: What compliance certifications apply to each part?

A: The main part (SWPA252012S3R3MT) carries EAR99 classification. The substitute (BWVF002520123R3M00) carries EAR99 classification and provides explicit RoHS3 Compliant and REACH Unaffected certifications. Both parts fall under HTSUS code 8504.50.8000.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, for applications operating at continuous currents of 1.04 A or below and saturation currents of 1.45 A or below, the parts are interchangeable. PCB footprints, reflow profiles, and assembly processes remain identical. No circuit redesign is required for substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message