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SWPA3015S330MT
Shenzhen Sunlord Electronics Co., Ltd.
FIXED IND 33UH 430MA 1.066OHM SM
17143 Pcs New Original In Stock
33 µH Shielded Drum Core, Wirewound Inductor 430 mA 1.066Ohm Max Nonstandard
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5.0 / 5.0
- (392 Ratings)
SWPA3015S330MT
Product Overview
9882137
DiGi Electronics Part Number
SWPA3015S330MT-DGManufacturer
Shenzhen Sunlord Electronics Co., Ltd.
SWPA3015S330MT
Description
FIXED IND 33UH 430MA 1.066OHM SMInventory
17143 Pcs New Original In Stock
33 µH Shielded Drum Core, Wirewound Inductor 430 mA 1.066Ohm Max Nonstandard
Quantity
Minimum 1
Minimum 1
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SWPA3015S330MT Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
SWPA
Product Status
Active
Type
Drum Core, Wirewound
Material - Core
Ferrite
Inductance
33 µH
Tolerance
±20%
Current Rating (Amps)
430 mA
Current - Saturation (Isat)
440mA
Shielding
Shielded
DC Resistance (DCR)
1.066Ohm Max
Q @ Freq
-
Frequency - Self Resonant
20MHz
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
SWPA3015S330MT-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
3442-SWPA3015S330MTTR
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
믿음과 친절, 두 마리 토끼를 다 잡은 곳입니다. 강력 추천합니다.
Dec 02, 2025
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Dec 02, 2025
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Dec 02, 2025
The product quality from DiGi Electronics is exceptional for the price.
Dec 02, 2025
Their honest pricing policies foster long-term trust and loyalty.
Dec 02, 2025
It's refreshing to see a company that offers quality at affordable prices and cares for the planet.
Dec 02, 2025
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Dec 02, 2025
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Frequently Asked Questions (FAQ)
What are the key design risks when using the SWPA3015S330MT in a high-temperature DC-DC converter operating near 125°C?
When using the SWPA3015S330MT in high-temperature environments close to its 125°C operating limit, thermal derating becomes critical. The inductor’s saturation current (Isat = 440mA) and thermal performance degrade as temperature increases, increasing risk of core saturation and DCR rise. To mitigate this, ensure the RMS current stays below 350mA with adequate PCB copper for heat dissipation (e.g., thermal vias under ground pads), and avoid placing near hot components. Verify performance under load using thermal imaging during prototyping to prevent unexpected inductance drop or efficiency loss.
How does the SWPA3015S330MT compare to the TDK VLS201610ET330 as a drop-in replacement in a buck regulator design?
While both the SWPA3015S330MT and TDK VLS201610ET330 offer 33 µH inductance and similar current ratings, the SWPA3015S330MT has a slightly higher DCR (1.066Ω max vs. ~0.9Ω) and a larger footprint (3.0mm x 3.0mm vs. 2.0mm x 1.6mm), making it not a direct drop-in replacement. The TDK part is more space-efficient but handles less saturation current (Isat = 370mA vs. 440mA). If board space allows and higher Isat is needed, SWPA3015S330MT is favorable; however, redesign of layout and thermal management is required. Verify self-resonant frequency (20MHz in SWPA3015S330MT) aligns with your switching frequency to avoid impedance issues.
Can the SWPA3015S330MT safely handle peak transient loads of 500mA in a point-of-load application without saturating?
The SWPA3015S330MT has a saturation current (Isat) of 440mA, defined as the point where inductance drops by 30%. A 500mA transient exceeds this threshold, risking core saturation, inductance collapse, and potential current spikes that could damage downstream components. If transient loads are short (e.g., <10µs) and infrequent, the inductor may tolerate them due to thermal inertia, but sustained or repetitive peaks above 440mA are not recommended. Consider using the SWPA3015S330MT with input current limiting or select a higher Isat alternative like the Coilcraft XAL3015-332 (3.3µH, 1.5A), or parallel inductors if space-constrained.
What PCB layout practices minimize EMI when integrating the shielded SWPA3015S330MT in a noise-sensitive analog power rail?
Although the SWPA3015S330MT is shielded, improper PCB layout can still couple switching noise into sensitive circuits. To minimize EMI, keep the inductor at least 1.5mm away from high-impedance traces (e.g., feedback, sensing). Route high-current switch and inductor nodes tightly (minimize loop area), place the SWPA3015S330MT close to the IC, and avoid routing sensitive traces under or near the inductor. Use a solid ground plane beneath, but avoid splitting it under the inductor. Also, verify switching node ringing with an oscilloscope; if excessive, slightly increase gate resistance to dampen ringing rather than assuming inductor noise.
What reliability concerns should I consider when selecting the SWPA3015S330MT for automotive-grade power supplies operating long-term at 105°C ambient?
The SWPA3015S330MT is rated for 125°C max operating temperature, making it viable for automotive environments, but long-term reliability depends on effective thermal management. At 105°C ambient with internal power losses (I²R from DCR = 1.066Ω max), self-heating can push internal temperatures past 125°C if current exceeds ~380mA RMS. To ensure reliability, derate current by 20–25%, use 2oz copper and thermal vias for heat spreading, and validate with extended burn-in testing under load. Also, confirm supply chain consistency—Sunlord parts may vary slightly from TI or TDK equivalents in aging behavior under thermal cycling, so monitor field performance closely.
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.
SWPA3015S330MT CAD Models
Shenzhen Sunlord Electronics Co., Ltd. SWPA3015S330MT PCB symbols & footprints
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