Unshielded Power Inductor – SM3521
We offer a wide range of power inductors in many different sizes and shapes, surface mounts used in switching mode power supplies, DC-DC converters, and EMI filtering applications. This miniature wire-wound SMD power inductor is produced by a fully automated winding/soldering/testing and packing machine. Before each shipment, it is 100% checked, and the testing includes the characteristic inductance value, DC resistance, Isat current, and layer isolation.
Minimum order quantity: 1 piece
Supply capacity: 1,000,000 pieces per month
Description
Features
- Small size, high rated current, low DCR.
- ROHS, Halogen, and REACH compliant.
- Various package sizes and wide inductance range.
- High current rating, Large terminal surface for good PCB bonding.
Applications
- GPS
- Power supplies
- DC-DC converter
- Portable communication equipment
- PC personal computers, notebooks PCs
- Digital equipment and LCD television
Shape and Dimensions
| Part Number | Inductance (µH) | DCR Max (mΩ) | Rated Current Max (mA) | Mounting | Dimensions (mm) | |||
| ФA1 | A2 | B | C | |||||
| SM3521-1R0 | 1.0 | 0.04 | 2250 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-1R4 | 1.4 | 0.06 | 2000 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-1R8 | 1.8 | 0.065 | 1800 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-2R2 | 2.2 | 0.08 | 1700 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-2R7 | 2.7 | 0.09 | 1500 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-3R3 | 3.3 | 0.10 | 1450 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-3R9 | 3.9 | 0.13 | 1200 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-4R7 | 4.7 | 0.15 | 1150 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-5R6 | 5.6 | 0.19 | 1050 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-6R8 | 6.8 | 0.24 | 950 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-8R2 | 8.2 | 0.28 | 900 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-100 | 10 | 0.33 | 800 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-120 | 12 | 0.36 | 700 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-150 | 15 | 0.47 | 650 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-180 | 18 | 0.53 | 600 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-220 | 22 | 0.67 | 550 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-270 | 27 | 0.91 | 500 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-330 | 33 | 1.25 | 450 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-390 | 39 | 1.30 | 400 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-470 | 47 | 1.80 | 350 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-560 | 56 | 2.00 | 320 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-680 | 68 | 2.30 | 300 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-820 | 82 | 3.15 | 280 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-101 | 100 | 3.50 | 260 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-271 | 270 | 10.0 | 160 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-331 | 330 | 12.5 | 140 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
| SM3521-471 | 470 | 21.5 | 120 | SM | 3.5±0.2 | 3.0±0.2 | 2.1±0.3 | 0.8 |
Certification: REACH, ROSH, ISO9001, ISO14001，
Packing: Tape and Reel
Delivery date: 7-20days (most can finish within 1 week if urgent needed)
MOQ: 1 unit
Payment Term: T/T, L/C or others for negotiation.
Free Samples Services: usually takes 3-5 working days after custom need.
Detailed informations including inductance, tolerance, rated current and DCR.
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