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SWPA3015S3R3MT
Shenzhen Sunlord Electronics Co., Ltd.
FIXED IND 3.3UH 1.36A 104MOHM SM
21510 Pcs New Original In Stock
3.3 µH Shielded Drum Core, Wirewound Inductor 1.36 A 104mOhm Max Nonstandard
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5.0 / 5.0
- (478 Ratings)
SWPA3015S3R3MT
Product Overview
9877073
DiGi Electronics Part Number
SWPA3015S3R3MT-DGManufacturer
Shenzhen Sunlord Electronics Co., Ltd.
SWPA3015S3R3MT
Description
FIXED IND 3.3UH 1.36A 104MOHM SMInventory
21510 Pcs New Original In Stock
3.3 µH Shielded Drum Core, Wirewound Inductor 1.36 A 104mOhm Max Nonstandard
Quantity
Minimum 1
Minimum 1
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SWPA3015S3R3MT Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
SWPA
Product Status
Active
Type
Drum Core, Wirewound
Material - Core
Ferrite
Inductance
3.3 µH
Tolerance
±20%
Current Rating (Amps)
1.36 A
Current - Saturation (Isat)
1.81A
Shielding
Shielded
DC Resistance (DCR)
104mOhm Max
Q @ Freq
-
Frequency - Self Resonant
68MHz
Ratings
-
Operating Temperature
-40°C ~ 125°C
Inductance Frequency - Test
100 kHz
Features
-
Mounting Type
Surface Mount
Package / Case
Nonstandard
Supplier Device Package
-
Size / Dimension
0.118" L x 0.118" W (3.00mm x 3.00mm)
Height - Seated (Max)
0.059" (1.50mm)
Datasheet & Documents
HTML Datasheet
SWPA3015S3R3MT-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
3442-SWPA3015S3R3MTCT
3442-SWPA3015S3R3MTTR
3442-SWPA3015S3R3MTDKR
Standard Package
2,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
배송 속도에 매우 만족했고, 덕분에 계획대로 사용할 수 있었어요.
Dec 02, 2025
Die Freundlichkeit des Teams bei DiGi Electronics hat mich sehr beeindruckt.
Dec 02, 2025
Their products have a solid construction that ensures longevity even in challenging operational conditions.
Dec 02, 2025
Fast delivery coupled with consistent product quality makes them my preferred supplier.
Dec 02, 2025
DiGi Electronics' quick turnaround on after-sales support keeps our operations running smoothly.
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Frequently Asked Questions (FAQ)
Can the SWPA3015S3R3MT inductor be safely used in a 2A peak current application without risk of saturation or overheating?
No, the SWPA3015S3R3MT has a saturation current (Isat) of 1.81A and a continuous current rating of 1.36A. Operating at 2A peak exceeds both limits, risking core saturation, inductance drop, and excessive temperature rise due to combined core and copper losses. For reliable operation, select an inductor with Isat > 2.2A and Irms > 1.5A to maintain margin under transient loads. Consider alternatives like the BWVF003030153R3M00, which offers higher current handling in a similar footprint.
What are the key risks when replacing the SWPA3015S3R3MT with a lower-cost unshielded inductor in a noise-sensitive buck converter design?
Replacing the SWPA3015S3R3MT—a shielded drum core inductor—with an unshielded type introduces significant EMI risks due to radiated magnetic fields, especially in compact layouts near analog or RF circuits. Unshielded inductors can couple noise into adjacent traces or components, degrading signal integrity and failing EMC compliance. Additionally, unshielded parts often have higher DCR and lower Isat, increasing conduction losses and thermal stress. Always verify shielding effectiveness and magnetic containment in your layout; if cost is critical, consider only pin-compatible shielded substitutes like the BWVF003030153R3M00.
How does the SWPA3015S3R3MT’s 104mOhm DCR impact efficiency in a 5V to 3.3V, 1A DC-DC converter, and can it be optimized?
At 1A output, the SWPA3015S3R3MT’s 104mOhm max DCR results in approximately 104mW of I²R loss, contributing to ~3% efficiency drop in a typical 5W converter. While acceptable for moderate loads, this loss increases with temperature and reduces thermal headroom. To optimize, ensure proper PCB copper area for heat dissipation and avoid stacking high-current traces beneath the component. If efficiency is critical, compare with lower-DCR alternatives such as the BWVF003030153R3M00 (typically 85mOhm), which may offer better performance in thermally constrained designs.
Is the SWPA3015S3R3MT suitable for automotive-grade applications given its -40°C to 125°C operating range and MSL 1 rating?
While the SWPA3015S3R3MT meets the temperature range (-40°C to 125°C) and has an MSL 1 (unlimited floor life) rating, suitability for automotive applications depends on additional qualifications. Automotive designs typically require AEC-Q200 compliance, which is not stated for this part. Without documented reliability testing (e.g., thermal cycling, mechanical shock, humidity resistance per AEC standards), using it in under-hood or safety-critical systems poses validation risk. For automotive use, prefer AEC-Q200-certified inductors; otherwise, conduct full environmental and lifetime testing if adopting the SWPA3015S3R3MT in non-critical modules.
What layout considerations are critical when integrating the SWPA3015S3R3MT into a high-density PCB with switching frequencies above 2MHz?
Despite its 68MHz self-resonant frequency, placing the SWPA3015S3R3MT in high-frequency (>2MHz) designs demands careful layout to avoid parasitic coupling and instability. Keep input/output traces short and orthogonal to minimize loop area and reduce EMI. Avoid routing sensitive analog signals beneath or adjacent to the inductor, as even shielded types can leak flux at high di/dt. Ensure adequate ground plane clearance per manufacturer guidelines to prevent capacitive coupling. Also, verify stability with actual load transients, as proximity to other magnetic components or power planes can alter effective inductance and cause subharmonic oscillation in peak-current-mode controllers.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
SWPA3015S3R3MT CAD Models
Shenzhen Sunlord Electronics Co., Ltd. SWPA3015S3R3MT PCB symbols & footprints
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