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Dual Winding UT20 Common Mode Choke EMI Line Filter Inductor For SMPS LED Driver
Place of Origin:
China
Brand Name:
Chipsen
Certification:
ISO9001:2015, ISO14001:2015, IATF16949, UL/cUL, ROHS, REACH, CQC
Model Number:
UT20
Minimum Order Quantity:
100pcs
Price:
US$2.5-10
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
UT20 Common Mode Choke
,Dual Winding Common Mode Choke
,SMPS LED Driver common mode transformer
Product Type:
Common Mode Choke / EMI Line Filter Inductor
Core Material:
Mn-Zn Ferrite Toroid
Winding:
Dual Winding, 100% Copper
Rated Current:
0.3A-3A Customizable
Inductance Range:
0.5mH – 50mH Customizable
Certification:
UL Recognized Material, RoHS, REACH
Application:
SMPS, LED Driver, Inverter, UPS, Home Appliance
Sample Time:
7 Days (Drawing Within 3 Days)
Hi-Pot Test:
1500VAC / 1min
Mounting Type:
Through Hole (Vertical / Horizontal)
Product Description
Dual Winding UT20 Common Mode Choke EMI Line Filter Inductor for SMPS LED Driver
UT20 Common Mode Choke is a dual-winding toroidal filter inductor designed to suppress common mode noise on AC/DC power lines. Built on a high-permeability ferrite toroid with a UL 94V-0 base and fully copper enameled windings, it delivers high common mode impedance with very low differential mode loss, helping switching power supplies, LED drivers and industrial equipment pass EMC/CE/FCC conducted-emission tests at first attempt.
Available in vertical (through-hole) and horizontal mounting, with inductance, wire gauge, pin layout and creepage distance fully customizable. OEM & ODM welcome — drawings within 3 days, samples within 7 days, MOQ from 100 pcs.
Key Features & Benefits
- High common mode impedance — effective attenuation over a wide 150 kHz-30 MHz conducted-emission band
- Low differential mode interference — balanced dual winding keeps insertion loss on the signal/power path to a minimum
- Low DCR, high efficiency — full copper enameled wire (no CCA), lower copper loss and lower temperature rise
- Stable performance — ferrite toroidal core with wide operating temperature range -40°C to +125°C, no risk of magnetic-path leakage from air gaps
- Safety compliant — UL recognized enameled wire and UL 94V-0 flame-retardant bobbin/base; RoHS & REACH compliant
- Durable & reliable — vacuum varnish impregnation against vibration, moisture and audible noise
- Fully customizable — inductance, current rating, turns ratio, pin pitch, base type, tape/tray packing
Technical Specifications
| Model | UT20 series (UT20-XXX customizable) |
|---|---|
| Product Type | Common mode choke / EMI line filter inductor |
| Core Material | High-permeability Mn-Zn ferrite toroid |
| Winding | Dual winding, 100% copper enameled wire (UL certified) |
| Inductance Range | 0.5 mH - 50 mH (@10 kHz/0.25 V, customizable) |
| Rated Current | 0.3 A - 3.0 A |
| Rated Voltage | 250 VAC / 300 VDC |
| Inductance Tolerance | ±20% / ±30% (optional) |
| Hi-Pot (winding to winding) | 1500 VAC / 1 min |
| Mounting | Vertical / horizontal, THT (through-hole) |
| Operating Temp. | -40°C to +125°C |
| Compliance | RoHS, REACH, UL recognized materials |
| Packing | Anti-static tray / carton, customized packing accepted |
| MOQ | 100 pcs |
Typical Applications
- Switching mode power supplies (SMPS), adapters and chargers
- LED drivers and lighting power modules
- Home appliances, air conditioners, inverter boards
- Industrial control, instrumentation and automation equipment
- Solar / PV inverters, UPS and energy-storage systems
- Battery chargers, OBC and communication power supplies
OEM & ODM Customization
| Drawing | Provided within 3 working days |
|---|---|
| Sample | Within 7 working days |
| Customizable Items | Inductance, current, wire gauge, turns, pin pitch, base, marking, packing |
| Warranty | 5 years standard; up to 20 years for special industries |
| Service | Free EMC/EMI solution advice and component selection support |
Quality Control
Every batch passes 100% inductance and Hi-Pot testing, plus DCR, appearance and pin-coplanarity inspection before packing. Incoming ferrite cores and enameled wire are verified against UL-recognized material lists, and finished goods are checked by AQL sampling before shipment.
FAQ
Q1: What is a UT20 common mode choke used for?
It is installed on the AC input or DC line of a power supply to block common mode noise while letting the working current pass, which is the fastest way to solve conducted-emission failures in EMC testing.
Q2: Can you customize inductance and pin layout?
Yes. Send us your schematic, target impedance curve or a competitor sample; we return a drawing within 3 days and samples within 7 days.
Q3: What is the MOQ and lead time?
MOQ is 100 pcs. Mass production lead time is normally 10-15 working days after drawing/sample approval, depending on quantity.
Q4: Do you support OEM branding and custom packing?
Yes, laser marking, custom labels and customer-specified packing are all available.
Q5: How do I choose between vertical and horizontal type?
Vertical type saves PCB area and suits compact adapters; horizontal type offers a lower profile for slim housings such as LED drivers.
Contact Us
Tell us your rated current, working voltage, required inductance (or noise frequency band) and mounting space, and our engineers will recommend the right UT20 solution with a quotation within 24 hours.
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