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SWPA252012S3R3MT
Shenzhen Sunlord Electronics Co., Ltd.
FIXED IND 3.3UH 1.04A 264MOHM SM
33138 Pcs New Original In Stock
3.3 µH Shielded Drum Core, Wirewound Inductor 1.04 A 264mOhm Max 1008 (2520 Metric)
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5.0 / 5.0
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SWPA252012S3R3MT
Product Overview
9881136
DiGi Electronics Part Number
SWPA252012S3R3MT-DGManufacturer
Shenzhen Sunlord Electronics Co., Ltd.
SWPA252012S3R3MT
Description
FIXED IND 3.3UH 1.04A 264MOHM SMInventory
33138 Pcs New Original In Stock
3.3 µH Shielded Drum Core, Wirewound Inductor 1.04 A 264mOhm Max 1008 (2520 Metric)
Quantity
Minimum 1
Minimum 1
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SWPA252012S3R3MT 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)
1.04 A
Current - Saturation (Isat)
1.61A
Shielding
Shielded
DC Resistance (DCR)
264mOhm Max
Q @ Freq
-
Frequency - Self Resonant
62MHz
Ratings
-
Operating Temperature
-40°C ~ 125°C
Inductance Frequency - Test
100 kHz
Features
-
Mounting Type
Surface Mount
Package / Case
1008 (2520 Metric)
Supplier Device Package
1008
Size / Dimension
0.098" L x 0.079" W (2.50mm x 2.00mm)
Height - Seated (Max)
0.047" (1.20mm)
Datasheet & Documents
HTML Datasheet
SWPA252012S3R3MT-DG
Environmental & Export Classification
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
3442-SWPA252012S3R3MTTR
Standard Package
2,000
Alternative Parts
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MANUFACTURER
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UNIT PRICE
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
En résumé, leur rapidité d’expédition fait toute la différence et me donne envie de revenir.
Dec 02, 2025
DiGi Electronics zeigt echtes Engagement für Kundenzufriedenheit.
Dec 02, 2025
I recommend DiGi Electronics for their reasonable prices and quick, reliable delivery.
Dec 02, 2025
DiGi Electronics offers reliable after-sales support that I trust.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing TDK VLCF3012ET-3R3M with SWPA252012S3R3MT in a DC-DC converter for automotive applications?
When substituting TDK's VLCF3012ET-3R3M with SWPA252012S3R3MT, verify inductance stability under DC bias and temperature—Sunlord's SWPA252012S3R3MT has a lower Isat (1.61A vs TDK's ~1.8A) and higher DCR (264mΩ max vs ~180mΩ), which can increase conduction losses and thermal stress in automotive environments. Ensure the reduced saturation margin won’t trigger current limit during cold-crank or load dump. Also confirm EMI performance, as shielding effectiveness in SWPA252012S3R3MT is good but may differ slightly due to core geometry. Test under worst-case conditions including 125°C operation to avoid inductance collapse in critical power rails.
Can SWPA252012S3R3MT handle high ripple current in a 1MHz buck converter without overheating or saturating?
SWPA252012S3R3MT can be used in 1MHz buck designs, but careful analysis is required—its self-resonant frequency (62MHz) is sufficient, but core losses rise significantly above 500kHz. At high ripple current, temperature rise is dominated by both DCR losses and AC core hysteresis. Ensure peak inductor current stays below 1.61A (Isat) with at least 20% margin to prevent saturation. Monitor PCB layout: use wide copper traces and thermal vias to dissipate heat, as the small 2520 footprint limits thermal mass. Use an IR camera during load transients to verify no hotspot formation.
How does the ±20% tolerance of SWPA252012S3R3MT impact feedback loop stability in tightly regulated power supplies?
The ±20% inductance tolerance of SWPA252012S3R3MT introduces uncertainty in loop compensation—LC filter resonance and phase margin can vary across units, potentially causing oscillation or slow transient response. Design the control loop (e.g., voltage or current mode) to remain stable over 2.64µH to 3.96µH range. Consider using a Type II or Type III compensator with sufficient phase margin (min 45°) even at worst-case inductance. Simulate step-load response in SPICE with extreme values; if regulation suffers, consider tighter-tolerance inductors or adaptive control strategies.
Is SWPA252012S3R3MT a reliable drop-in replacement for Murata LQM2MPH3R3MG0L in space-constrained RF or PMIC circuits?
SWPA252012S3R3MT is footprint-compatible (2520 metric) with Murata LQM2MPH3R3MG0L, but critical differences exist: Murata’s part offers lower DCR (~200mΩ) and tighter tolerance (±20% vs ±20%, but typically tighter in practice) with better high-frequency Q. In RF biasing or low-noise PMIC applications, the higher DCR and uncharacterized Q factor of SWPA252012S3R3MT may increase power loss and phase noise. For non-critical DC-DC rails, it's acceptable, but avoid in LDO input chokes or RF chokes where Q and SRF matter. Validate noise spectral density below 100MHz if replacing in sensitive circuits.
What PCB layout and thermal management best practices should be followed when integrating SWPA252012S3R3MT in high-density consumer electronics?
For reliable integration of SWPA252012S3R3MT in compact designs, use symmetric, wide (≥1.5mm) copper pads on both inductor terminals to improve heat dissipation and prevent tombstoning during reflow. Avoid thermal vias directly under pads unless isolated, as they can cause solder voids. Surround the inductor with ≥0.5mm clearance from adjacent components and traces to minimize EMI coupling. Use a ground plane beneath (but not under) the inductor to shield noise while preserving thermal stability. Confirm reflow profile complies with MSL1 requirements, and avoid mechanical stress on the component during board flex tests to prevent microcracks in the ferrite core.
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.
SWPA252012S3R3MT CAD Models
Shenzhen Sunlord Electronics Co., Ltd. SWPA252012S3R3MT PCB symbols & footprints
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