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Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter
Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter
Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter
Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter
Specifications
Model Number :
ET28
Powerrating :
5W - 100W
Insulationclass :
Class B / Class F
MOQ :
1K
Delivery Time :
7-14 work days (Negotiable)
Dimensions :
Varies by model, typically 20mm x 20mm x 15mm
Productname :
High Frequency Flyback Transformer
Payment Terms :
T/T
Regulatorycompliance :
UL, RoHS, CE
Operatingfrequency :
20kHz - 200kHz
Mountingtype :
PCB mount / Through-hole
Brand Name :
CHIPSEN
Isolationvoltage :
3000V AC
Place of Origin :
China
Temperaturerange :
-40°C to +125°C
Inputvoltage :
85V - 265V AC
Price :
＄0.5-1.8/pieces
Windingtype :
Copper wire, enamel coated
Outputvoltage :
5V - 400V DC
Supply Ability :
10000pcs
Application :
Switching power supplies, chargers, LED drivers
Efficiency :
Up to 90%
Certification :
UL/cUL Class B/F/H, VDE, CQC
Corematerial :
Ferrite
Description
High Current Compact ET28 Common Mode Choke
The ET28 is a ferrite core common mode choke designed to suppress conducted common mode noise in AC input, DC input, and power conversion circuits. It uses multiple magnetically coupled windings to present high impedance to common mode interference while allowing normal differential current to pass with relatively low impedance.
Note: All values below are typical engineering inquiry references rather than guaranteed ratings. Final performance depends on magnetic material, number of windings, conductor size, turns, operating voltage, frequency spectrum, ambient temperature, and allowable temperature rise.
Industry Applications & Typical Parameters
Industry and Application Typical Circuit Conditions Parameters Prioritized Customization Support
Industrial Inverters Single phase or three phase AC input filtering Rated current, common mode inductance, DCR, impedance, temperature rise, insulation Two line, three line or four line windings, current, inductance, mounting
Solar Inverters PV inverter AC or DC side conducted EMI suppression High voltage insulation, impedance frequency response, current, thermal performance Core material, winding count, insulation, terminals, thermal design
Energy Storage Systems PCS battery converter and auxiliary power filtering RMS current, common mode impedance, DCR, temperature rise, reliability High current conductors, reinforced insulation, customized mounting
EV Charging Equipment AC input and isolated power stage EMI filter Working voltage, creepage clearance, current, impedance, thermal cycling Multiple line windings, insulation barriers, terminals, validation support
UPS Equipment Rectifier input, inverter output and bypass line filtering Continuous current, overload current, inductance, DCR, insulation Current rating, wire size, winding arrangement, terminal structure
Customization Parameters
Parameter Typical Inquiry Reference Customization Status
Core Platform ET28 ferrite core assembly Customizable
Number of Windings Two line, three line, four line or customer specified Customizable
Common Mode Inductance Approximately 0.2 mH to 20 mH depending on turns and current Customizable
Rated Current Approximately 1 A to 20 A depending on conductor and temperature rise To Be Confirmed
Working Voltage 125 V, 250 V, 500 V or application specified voltage Customer Specified
DC Resistance Maximum DCR specified for each winding Customizable
Product Characteristics
  • ET28 ferrite core common mode choke construction
  • Two line, three line and four line configurations available
  • High common mode impedance
  • Low DC resistance options
  • High current winding configurations
  • Matched coupled windings
  • Controlled leakage inductance
  • Wide frequency noise suppression capability
  • Low differential mode power loss
  • Reinforced insulation options
  • Customized creepage and clearance
  • Compact vertical or horizontal mounting
Applications
  • Industrial inverter EMI filters
  • Solar inverter input and output filters
  • Energy storage PCS equipment
  • EV charging stations
  • Uninterruptible power supplies
  • Variable frequency drives
  • Industrial switching power supplies
  • Telecom power systems
  • Medical power equipment
  • Data center power supplies
Why Choose Chipsen
  • ET28 common mode choke customization
  • Two line, three line and four line winding options
  • Custom inductance, current, DCR and impedance
  • Engineering support based on actual noise spectrum
  • Drawing based and sample based replacement development
  • High current and low resistance conductor options
  • Reinforced insulation and controlled creepage design
  • PCB pin, lead wire and terminal customization
  • Vertical, horizontal and customized mounting
  • MOQ from 100 pieces for eligible projects
  • Five year warranty with extended warranty evaluation
Frequently Asked Questions
What is the main function of the ET28 common mode choke?
It suppresses common mode noise travelling in the same direction on multiple power lines while allowing normal differential current to pass with relatively low impedance.
Can the ET28 be used in a three phase circuit?
Yes. A three winding or four winding configuration can be developed for three phase systems with or without a neutral conductor. Voltage, current, insulation and wiring configuration must be provided.
What information is required for customization?
Please provide the number of lines, working voltage, continuous and peak current, common mode inductance test frequency, target impedance frequencies, maximum DCR, leakage requirement, temperature conditions, dimensions, terminal arrangement and applicable standards.
Does this choke guarantee EMC compliance?
No. EMC performance depends on the complete filter circuit, PCB layout, grounding, cables, enclosure and operating conditions. The choke must be validated in the customer equipment.
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Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter

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Product Detail
Model Number :
ET28
Powerrating :
5W - 100W
Insulationclass :
Class B / Class F
MOQ :
1K
Delivery Time :
7-14 work days (Negotiable)
Dimensions :
Varies by model, typically 20mm x 20mm x 15mm
Contact Supplier
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Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter
Industrial 250V Common Mode Choke ET28 3A 10mH EMI Power Filter

Dongguan Chipsen Electronics Technology Co., Ltd.

Verified Supplier
1 Years
guangdong, dongguan
Since 2007
Business Type :
Manufacturer
Main Products :
High Frequency Flyback Transformer, High Frequency SMPS Transformer, High Frequency Pulse Transformer
Total Annual :
28820000-29820000
Employee Number :
400~450
Certification Level :
Verified Supplier
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