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THINKING launches high power type NTC thermistor for inrush current limiting, SCH series. With a body size of Ф20mm, R25 of this series ranges from 0.7Ω to 120Ω, and its Imax is from 3A to18A. Furthermore, its electrical characteristics is equivalent to SCK25 series (Ф25mm NTC thermistor), but 50% installation space is reduced when comparing with SCK25 series. Because of that, the product is recommended for high power applications with limited installation space.

In AC or DC circuit with built-in inrush current limiter, power consumption of NTC thermistor is thus negligible in continuous operation. This is the outstanding advantage of NTC thermistors over fixed resistors. The product is recommended for the following applications for its high power and the aforementioned feature.

• ● High power switching mode power supply (SMPS), uninterruptible power supply (UPS), power conversion equipment
• ● Charger and charging station of electric vehicle
• ● Motor drive system, high power plasma welding machine, cutting machine, high power lighting application
• ● Magnetic resonance imaging (MRI) equipment, professional high power audio receiver, high power toroidal transformer, high capacity power inverter
• ● Industrial robot driven by high voltage power supply, smart low-voltage power distribution unit
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• Most NTC inrush current limiters rely on lead-contained solder to overcome high temperature side effect brought by operating under high static working current. However, lead is a hazardous substance, and products that contain lead may harm the environment. Thanks to proprietary patented technology, this new NTC inrush current limiter, SCH series, is free of lead-contained material on solder joint. Adapting SCH series not only follows eco-friendly trend but also brings the following advantages.

• ● Electrical performance of SCH series is equivalent to Ф25mm, and it reduces 50% installation space when comparing with SCK25 series
• ● Body temperature increase of SCH series is lower and extends use life of end applications
• ● SCH series is a lead-free products and does not harm the environment
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• SCK series and SCH series are both power type NTC thermistors for inrush current limiting. Body sizes of SCK series range from Ф5mm to Ф30mm and meet needs of various applications. In addition, Ф20mm body size of SCH series is the most popular body size in the market, and it is suitable for high power applications with limited installation space because of its high power. Please click product series names below for product catalogues. If you need samples or detailed information, please contact THINKING sales representatives and authorized THINKING distributors.

• ● SCK Series (Power Type NTC Thermistor)
• ● SCH Series (High Power Type NTC Thermistor)
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