SQ series magnetic core wire common mode inductor DIP direct insertion choke coil
SQ1212
SQ1212 filter adopts a winding symmetrical design, with a conventional inductance range of 1mH~10mH, rated current of 0.5~3A, and operating frequency of 10kHz~30MHz.
Download directory
Download directory
SQ1212 adopts square manganese zinc ferrite core, dual winding structure in the same direction, high-purity enameled copper wire winding, and vertical straight insertion skeleton. It has functions such as low DCR DC resistance, small temperature rise, and stable anti-interference performance.
Product parameters
| Inductance range | 1mH~10mH | Conventional pin spacing | 5mm (customizable) |
| DCR DC resistance | 0.1 Ω to 12 Ω | Operating frequency | 10kHz~30MHz |
| Working temperature | -20 ℃~+85 ℃ | Storage temperature | -40 ℃~+125 ℃ |
| Magnetic core | manganese zinc ferrite | size | 12mm × 12mm square |
| Skeleton | Plastic | Installation Method | direct insertion of DIP pins |
| Brand | CXWON | Rated current | 0.5A~3A |
Common models
Core advantages of SQ inductor
1. Adopting square manganese zinc ferrite core, with low high-frequency loss and excellent common mode noise suppression effect.
2. Symmetrical dual winding design, high common mode impedance, effectively filtering out common mode EMI interference on power lines.
3. Low DCR DC resistance, low copper loss, low device temperature rise, which helps improve the overall efficiency of the power supply.
4. The flame-retardant plastic skeleton has reliable insulation performance, and the initial isolation and voltage resistance can be customized according to safety regulations.
5. The structure is stable, with strong anti vibration performance, and is not prone to winding breakage or magnetic core displacement problems.
2. Symmetrical dual winding design, high common mode impedance, effectively filtering out common mode EMI interference on power lines.
3. Low DCR DC resistance, low copper loss, low device temperature rise, which helps improve the overall efficiency of the power supply.
4. The flame-retardant plastic skeleton has reliable insulation performance, and the initial isolation and voltage resistance can be customized according to safety regulations.
5. The structure is stable, with strong anti vibration performance, and is not prone to winding breakage or magnetic core displacement problems.
Inductor real-shot details：
Typical application scenarios
Flowchart
Why choose us
FAQ
Q: What is the rated current of SQ1212?
A: The standard current range is 0.5A-3A, and the current size is determined by the diameter of the copper wire. The thicker the wire diameter, the larger the current carrying capacity, and the smaller the DCR.
A: The standard current range is 0.5A-3A, and the current size is determined by the diameter of the copper wire. The thicker the wire diameter, the larger the current carrying capacity, and the smaller the DCR.
Q: What is the main function of SQ1212?
A: Mainly suppresses common mode interference of the power supply, and also has a trace leakage inductance, which can assist in improving differential mode noise and solving the problems of power ripple and EMC exceeding the standard.
Q: Can SQ1212 handle both common mode and differential mode interference simultaneously?
A: Main focus is on common mode filtering; Equipped with a small amount of leakage inductance, it can assist in differential mode filtering. When there is severe differential mode interference, it is recommended to use X capacitors and differential mode inductors.
Q: What key parameters need to be confirmed when selecting SQ1212?
A: Inductance tolerance, rated current, DCR resistance, withstand voltage requirements, pin spacing, operating frequency, and usage scenarios.
Q: What is the reason for the temperature rise of SQ1212?
A: Overload of working current, thin wire diameter, large DCR, dense winding, poor heat dissipation, and excessive high-frequency interference of the whole machine lead to increased magnetic core loss.
