T20 coil low DC resistance magnetic ring industrial control power supply magnetic ring coil

 

        T20107 adopts a closed-ring magnetic circuit, with extremely low leakage flux and low external electromagnetic radiation, reducing interference from surrounding components. The windings can be protected by bare rings, insulating coatings, or heat-shrinkable sleeves. The DC resistance (DCR) is low, and the working temperature rise is stable.

 

Product parameters

Inductance	8uH ~ 80uH	Rated current Irms	2A~10A
Saturation current	4A ~ 16A	DCR - DC resistance	0.02Ω ~ 0.6Ω
Operating frequency	20kHz ~ 1MHz	Operating temperature	-40°C~+125°C
Core material	Iron-silicon-aluminum / Magnetic powder core	Brand	CXWON

 

Common models

 

Core advantages of Surface mount inductor

1. High-purity iron-silicon-aluminum magnetic core with extremely low loss: Utilizing high-quality iron-silicon-aluminum magnetic powder cores, the mid-to-high frequency loss is much lower than that of ordinary iron powder cores. The power supply temperature rise is lower and the efficiency is higher.
2. Strong anti-magnetic saturation capability: Equipped with a distributed air gap structure, it has excellent DC bias characteristics. Under large current and full-load conditions, the inductance attenuation is small, ensuring more stable operation.
3. Ultra-low magnetic leakage design: Closed-loop ring-shaped magnetic circuit, with complete magnetic force lines, minimal magnetic leakage, effectively reducing the EMI radiation of the entire machine, and easily passing EMC tests.
4. Low DCR and low copper loss: Combined with high-purity enameled copper wire, the DC resistance is small, the conduction loss is low, and it is less likely to heat up during long-term operation.
5. Effectively suppresses power supply ripple: Good magnetic core energy storage effect, excellent filtering smoothness, significantly improving the power supply output ripple and noise.

 

Flowchart

Why choose us

Q: Where does the T20107 iron-silicon-aluminum core outperform the ordinary iron powder core?
A: The T20107 has lower loss, lower temperature rise, stronger anti-saturation ability, and the inductance is less likely to drop under high current. The power supply stability of the T20107 far exceeds that of the iron powder core.

Q: Is the leakage magnetic flux of the T20107 large?
A: The leakage magnetic flux is extremely low. The closed-loop magnetic circuit is almost without external magnetic force leakage, which will not interfere with the surrounding IC and components. The EMC pass rate is high.

Q: Why doesn't the T20107 easily saturate under full load?
A: The magnetic core comes with distributed air gaps, which can evenly distribute the magnetic flux density, significantly enhancing the DC bias capacity, and making it less likely to saturate under heavy load.

Q: How many insulation methods does the T20107 have?
A: There are three options: bare ring, epoxy coating full coverage, and high-temperature heat shrink tubing. The choice can be made according to the customer's assembly process.

Q: What causes the temperature rise of the T20107?
A: Overload operation, too thin wire diameter with excessive DCR, high frequency, unreasonable winding design, and insufficient heat dissipation space all lead to increased loss.