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High Current Custom Toroidal Common Mode Choke Low DCR EMI Power Line Filter for Industrial Power Supplies
Place of Origin:
China
Brand Name:
CHIPSEN
Certification:
UL/cUL Class B/F/H, VDE, CQC
Model Number:
T26
Minimum Order Quantity:
1000PCS
Price:
$10 - 20/ Piece,1000-10000pcs
Packaging Details:
Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request.
Delivery Time:
7-22 work days
Payment Terms:
T/T
Supply Ability:
5000 pcs per day
Inquiry Now
Get A Quote
Specifications
Highlight Features
T26 common mode choke
,custom toroidal EMI filter
,high current power line choke
Clearance & Creepage Distance:
Phase-to-Phase: ≥ 6.5 Mm | Phase-to-Core: ≥ 8.0 Mm
Acoustic Noise / Audible Hum:
< 25 DB(A) @ 1 Meter, 10kHz–20kHz (Varnish Vacuum Impregnated / Epoxy Potted)
Self-Resonant Frequency - SRF:
SRF: 1.5 MHz – 15 MHz (Depending On Inductance & Winding Layers)
Thermal Resistance & Temp Rise:
Temperature Rise: ΔT ≤ 40K @ Full Load (Natural Air Cooling) / Thermal Resistance: ~12°C/W
Target Switching Frequency Range:
10 KHz – 150 KHz (Optimized For SiC / GaN / IGBT High-speed Switching)
Pin Pitch & Mechanical Tolerance:
Standard Grid: 5.0 Mm / 7.5 Mm / 10.0 Mm Pitch | Tolerance: ±0.2 Mm
Comparative Tracking Index - CTI:
CTI ≥ 600V (Material Group I, High-Tracking Resistance Plastic)
Moisture Sensitivity Level & Storage:
MSL 1 (Unlimited Floor Life At ≤30°C / 85% RH) | Storage: -40°C To +85°C
Product Description
T26 High-Current Common Mode Choke / EMI Power Line Filter Inductor
1. Product Overview
The CHIPSEN T26 Common Mode Choke / EMI Filter Inductor is engineered specifically for high-efficiency power conversion, EMI/EMC noise suppression, and grid-tied power electronics. Built on high-permeability magnetic cores (MnZn / NiZn Ferrite, Nanocrystalline, or Sendust) with precision copper winding and a UL94 V-0 flame-retardant mounting structure, the T26 series delivers exceptional common-mode and differential-mode noise attenuation, low DC resistance (DCR), and superior winding symmetry for demanding industrial, automotive, and new energy applications.
| Parameter Category | Key Electrical Parameter | Typical Specification Range | Test Condition / Method |
| Inductance & Filtering | Rated Inductance (L) | CM: 0.5 mH - 30.0 mH | DM: 10 μH - 200 μH (Customizable) | @ 10 kHz / 100 kHz, 0.1V, 25°C |
| Winding Symmetry | Winding Inductance Balance (|ΔL|) | ≤ 2.0% - 5.0% max deviation between windings | Automated precision toroidal / sectional winding |
| Current & Thermal | Rated Continuous Current (Irms) | 1.0 A - 80 A continuous (Model & Wire Gauge Dependent) | ΔT ≤ 40K - 50K temperature rise @ 25°C |
| Saturation Margin | Saturation Current (Isat) | Isat ≥ 1.2 - 1.5 * Irms (L drop ≤ 20%-30%) | High DC-bias testing (up to 100A) |
| Power Loss & DCR | DC Resistance per Winding (DCR) | 1.5 mΩ - 150 mΩ (Ultra-low DCR customizable) | 4-wire Kelvin measurement @ 25°C |
| High-Voltage Safety | Dielectric Withstand (Hi-Pot) | 1,500 VAC - 3,000 VAC (Leakage < 5mA, 60s) | Winding-to-Winding & Winding-to-Core |
| Thermal Class | Insulation Thermal Rating | Class B (130°C) / Class F (155°C) / Class H (180°C) | UL 1446 recognized insulation systems |
| Magnetic Material | Core Material Options | MnZn / NiZn Ferrite, Nanocrystalline, Sendust | Tailored to EMI frequency & flux density |
| Mechanical & Mounting | Mounting & Pin Termination | Vertical / Horizontal Through-Hole PCB Mount with Base | UL94-V0 rated base/divider, tinned copper pins |
2. Key Features
- Broadband Common-Mode EMI Suppression: High impedance across 10 kHz to 30 MHz+ effectively suppresses conducted electromagnetic interference (EMI) in switching power lines.
- High Current & Low DCR Loss: Precision heavy-gauge or flat-wire copper winding minimizes copper loss and temperature rise under continuous full-load operation.
- Precision Winding Symmetry: Automated toroidal and sectional bobbin winding ensures tight inductance balance, minimizing leakage flux and preventing core saturation.
- Reinforced Dielectric Isolation: UL94 V-0 insulated divider/base and high-grade enameled wire provide dielectric withstand voltage up to 1,500 VAC – 3,000 VAC (Hi-Pot, 60s).
- Thermal Endurance: UL-recognized Class B (130°C) / Class F (155°C) / Class H (180°C) insulation systems for harsh industrial and automotive environments.
3. Applications
- Renewable Energy & Storage: Solar / Photovoltaic grid-tied inverters, commercial energy storage PCS, and high-power DC-DC converters.
- E-Mobility & Charging: EV DC fast charging piles, onboard chargers (OBC), and automotive power distribution units.
- Industrial Automation & SMPS: Variable Frequency Drives (VFD), servo controllers, industrial robotics, switching power supplies (SMPS), and LED drivers.
- Critical Power Infrastructure: Industrial UPS, AI server & telecom power supplies, smart appliances, and medical power modules.
4. Why Partner with CHIPSEN (Dongguan Chipsen Electronics)?
Product & R&D Advantages
- 20 Years Magnetic Expertise & 55 Patents: Founded in 2007 as a National High-Tech & Specialized SME Enterprise, backed by 55 patents and an 18-engineer R&D/FAE team offering free custom design, rapid prototyping, and EMC/EMI debugging support.
- In-House Reliability & 100% Automated Testing: Full reliability laboratory (100A DC-bias testers, impedance analyzers, salt spray, thermal-humidity cycling, glow-wire, needle-flame, vibration, and Hi-Pot testing) plus 100% automated 4-in-1 electrical testing with SPC process control.
- Complete Global Certifications: Certified to IATF16949, ISO9001, and ISO14001 management systems; products hold UL/cUL (Class B/F/H), VDE, CB, CQC, CE, RoHS, and REACH approvals.
Company & Manufacturing Strength
- Scale & Intelligent Manufacturing: 7,200㎡ modern facility with 452 employees, 12 automated production lines, MES/ERP digital traceability, and a monthly capacity of 6,000,000 pcs (60,000,000 pcs/year).
- Vertical Integration & Fast Delivery: Full value-chain control from core selection and precision winding to automated soldering and vacuum varnish impregnation, ensuring high consistency and rapid sample delivery.
- Trusted by Global Tier-1 Brands: Proven long-term supplier to industry leaders including MIDEA, JABIL, HITACHI, KUKA, Federal Signal, and Kohler across North America, Europe, Southeast Asia, and China.
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