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SMD 330 Shielded Power Inductor 33uH High Current SMT Coil For DC-DC Converters
Place of Origin:
China
Brand Name:
Chipsen
Certification:
ISO9001:2015, ISO14001:2015, IATF16949, UL/cUL, ROHS, REACH, CQC
Model Number:
SMD330
Minimum Order Quantity:
10,000pcs
Price:
US$0.03-0.1
Packaging Details:
Carton 1: 25.5 X 21.5 X 21cm. Carton 2: 43.5 x 24.5 x 21 cm
Delivery Time:
3~4 Weeks
Payment Terms:
T/T
Supply Ability:
1,000,000pcs/month
Inquiry Now
Get A Quote
Specifications
Highlight Features
330 shielded power inductor
,33uH shielded power inductor
,High Current shielded inductor
Product Type:
SMD Shielded Power Inductor / SMT Power Choke
Inductance:
33uH (Code 330), Tolerance ±20%
Mounting Type:
Surface Mount (SMD / SMT), Reflow Solderable
Shielding:
Magnetically Shielded, Low EMI
Core Material:
Ferrite Drum Core + Magnetic Moulding Resin
Winding Wire:
Enamelled Full Copper Wire, Class F/H
Operating Temperature:
-40°C To +125°C
Package Size Options:
CD43 / CD54 / CD75 / CD104 / CD127 (4x4mm - 12x12mm)
Application:
DC-DC Converter, SMPS, LED Driver, PV, UPS, OBC
Customization:
OEM / ODM, Inductance & Size Customizable, RoHS Compliant
Product Description
SMD 330 Shielded Power Inductor 33uH High Current SMT Coil For DC-DC Converters
The SMD 330 power inductor is a magnetically shielded, surface-mount (SMT) power choke marked "330", which stands for a nominal inductance of 33µH. It uses a ferrite drum core wrapped in a moulded magnetic resin body, giving low EMI radiation, low DCR and a flat square top surface that is ideal for automatic pick-and-place and vacuum-nozzle handling.
Typical use is the energy-storage inductor in DC-DC buck/boost converters, switching power supplies (SMPS), LED drivers and on-board power modules. Custom inductance (1µH–1000µH), size, current rating and packaging are available from our own winding and moulding lines.
Key Features
- Magnetically shielded structure — closed magnetic circuit sharply reduces EMI/crosstalk, allowing dense layout next to MOSFETs and ICs
- Low DCR, high efficiency — enamelled copper wire winding lowers copper loss and self-heating, improving DC-DC conversion efficiency
- High saturation current — stable inductance under load transients, suitable for high ripple-current switching topologies
- Wide operating temperature — −40°C to +125°C (including self-temperature rise), fit for industrial and automotive-grade environments
- SMT & reflow ready — flat top surface for pick-and-place, lead-free reflow up to 260°C, tape-and-reel packaging
- Full customization — inductance, footprint, DCR, current rating, marking and reel quantity made to your drawing or sample
- Quality system — produced under ISO 9001/IATF 16949 process control, RoHS & REACH compliant, 100% LCR and appearance inspection before shipment
Technical Specifications
| Product Name | SMD Shielded Power Inductor (SMT Power Choke) |
|---|---|
| Model / Marking | SMD330 / printed code "330" |
| Inductance | 33µH (code 330), tolerance ±20% (±10% / ±15% optional) |
| Test Frequency | 100kHz / 0.1V (LCR meter) |
| Available Footprints | CD43 / CD54 / CD75 / CD104 / CD127 series (4*4mm up to 12*12mm), height 1.8–8.0mm |
| Inductance Range (series) | 1µH – 1000µH, customizable |
| Core Material | Ferrite drum core + magnetic shielding resin |
| Wire | Enamelled copper wire (Class F / H), full-copper construction |
| Terminal / Plating | Tin-plated, lead-free, solderability ≥95% |
| Operating Temperature | −40°C to +125°C (ambient + temperature rise) |
| Mounting | SMD / SMT, reflow soldering peak 260°C / 10s |
| Packaging | Tape & reel, anti-static, quantity per reel by size |
| Compliance | RoHS, REACH; ISO 9001 / IATF 16949 manufacturing |
| Origin / Supply | China, factory direct, OEM & ODM welcome |
Note: rated current, saturation current and DCR vary with the selected footprint. Please contact us for the full datasheet of the exact size you need.
Applications
- DC-DC buck/boost converters and POL power modules
- Switching power supplies (SMPS), adapters and chargers
- LED lighting drivers and dimmable drivers
- Motherboards, graphic cards, servers and telecom power boards
- Consumer electronics: TV, set-top box, router, camera modules
- New energy & industrial: photovoltaic optimizers, UPS, EV on-board chargers (OBC), BMS
Why Choose Us
- Direct manufacturer with in-house winding, moulding and testing — no trading middleman
- Engineering support: inductance/DCR/temperature-rise simulation and free samples for evaluation
- Stable monthly capacity under MTO (make-to-order) mode, mass-production lead time 15–25 days
- 100% electrical test, full traceability and detailed inspection report with each shipment
FAQ
Q1: What does the "330" marking on the inductor mean?
A: It is the EIA inductance code. The first two digits are significant figures and the third is the power of ten, so "330" = 33 * 100 = 33µH.
Q2: Is this a shielded or unshielded inductor?
A: It is magnetically shielded. The drum core is encapsulated in magnetic resin, which closes the magnetic path and reduces EMI, so it can be placed close to sensitive signal traces.
Q3: Can I get a different inductance or package size?
A: Yes. We produce 1µH–1000µH in CD43 to CD127 footprints, and can adjust DCR, rated current, height and marking according to your drawing or reference sample.
Q4: What is the MOQ and can I get samples first?
A: Standard items support low-volume trial orders, and free samples are available for qualified engineering evaluation; customers only cover the courier cost.
Q5: How is the product packed and shipped?
A: Anti-static tape & reel in cartons, supporting EXW / FOB / CIF terms by sea, air or express courier.
Q6: Do you provide datasheets and compliance documents?
A: Yes — datasheet, RoHS / REACH declarations and test reports are provided on request before or with the order.
Need a quotation? Send us the inductance, size limit, rated current and annual usage, and our engineers will reply with a matched part number, datasheet and tiered price within 12 working hours.
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