TAYAO Technology Co., Ltd.

6F No.248-3, Sin-Sheng Rd.,Cian-Jhen Dist., Kaohsiung, Taiwan, 806

Tel : + 886 7 8129669 # 131
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E-mail:sales@tayao.com.tw
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TAYAO Technology Co., Ltd. is a manufacturer, supplier and exporter of Power NTC Thermistor with well- equipped testing facilities and strong technical force in Taiwan. With a wide range, excellent quality, reasonable prices and stylish designs, our products are extensive used in market and other industries.

 
Power NTC Thermistor
Type : Power NTC Thermistor
Dimension: 5mm disc to 30mm disc


NTC thermistors for inrush current limiting are made of polycrystalline mixed-oxide ceramics. They suppress the high inrush current surges occurring in cases such as the charging of low-impedance smoothing capacitors.

High inrush currents occur when many items of electrical equipment such as switched mode power supplies, motors, transformers and amplifiers are turned on. These currents can damage individual components or entire subassemblies and blow fuses in error. Such high currents are caused by the extremely low impedance of smoothing capacitors or coils which almost produce short circuits at the moment of switching on. NTC thermistors acting as inrush current limiters solve this problem without elaborate circuitry at low cost.

What is an NTC thermistor?

The resistance of negative temperature coefficient (NTC) thermistors falls as their temperature rises.  NTC thermistors are made from various metal oxides that are combined into a powdery mass and mixed with a plastic binding agent. In the production of inrush current limiters, the mass is pressed into disks under high pressure. Polycrystalline NTC thermistor bodies are formed by subsequent sintering of these blanks at temperatures between 1000 and 1400 °C.  A silver paste is baked onto them as metallization on both sides. The disks are then leaded and sealed in varnish.

Applications

  1. Switched mode power supplies
  2. Motors
  3. Transformers
  4. Amplifiers
  5. Monitors
  6. Color television sets

Advantages
Minimize line-current distortion and radio noise.
Protect switches, rectifier diodes and smoothing capacitors against premature failure.
Prevent fuses from blowing in error.
When you tune on an electrical equipment ,the surge current can be restrained by a power NTC thermistor connected in series with the power circuit .Because of the continuing action of current, temperature of power NTC thermistor raising, the resistance will rapidly drop to a small value, the consumed power can be ignored. So it can not affect normal operating current. Therefore, using power NTC thermistor is a most effectively and most brief measure to restrain surge current, protecting electrical equipment from destruction.

 

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