The cooling principle of TEC is shown in figure 1. P and N type semiconductors are sandwiched between metal plates, which can form a pathway. Under the action of external electric field, the hole of P type in the point(a) needs to absorb certain energy to improve its own potential energy and then goes into P type semiconductor, so the temperature of the junction can be decreased and the cold contact point is formed. But the hole in the point(b) needs to release the excess energy to enter thesheet metal, and then the junction temperature will rise to form a hot contact.(more)

The ATH100KL2A is a capped ntc thermistor encapsulated with glass and packaged in a compact ring lug. This thermistor series consist of ATH100KL2A, ATH100KL2AT63 and ATH100KL2AT63S. The ATH100KL2A has two leads coated with copper, the ATH100KL2AT63S has the two leads covered with plastic tubing and sealed by epoxy for insulation and liquid resistant, while the ATH100KL2AT63 is the non-sealed version. ATH100KL2A series thermistors feature better long term stability, higher reliability and wider temperature range when compared with conventional thermistor assemblies containing epoxy encapsulated thermistors inside.(more)

Thermoelectric cooler (TEC) is built due to the Peltier effect, which both have the abilities of heating and cooling. When comparing with the traditional cooling method, vapor compression cooling, TEC has the following features:(more)

The ATH10KL2C is a thermistor assembly with a ring lug outside the glass encapsulated ntc thermistor. The ATH10KL2C series thermistor consists of three types, ATH10KL2C, ATH10KL2CT70 and ATH10KL2CT70S. The ATH10KL2C comes with two leads coated with copper, the ATH10KL2CT70 has the copper leads with high temperature plastic tubing and also sealed by epoxy, while the ATH10KL2CT70S is the sealed version of ATH10KL2CT70. The different types are applied to different applications. The sealed version is liquid resistant, so it can be used in the applications with some noncorrosive liquid.(more)

With the development of technology and science, thermal electric coolers (TECs) have been more and more popular in cooling system. TECs can cool and heat in the same time, depending on the direction of the input current. TECs have many advantages of no moving parts, no noise, no pollution and long service lifetime. These are the reason why TECs have been widely used in cooling system.(more)

When proper measures have been adopted to protect the TECs from being overheated, we can solder the TEC with metalized surface to thermoelectric components. In order to prevent the TEC from excessive mechanical force, solder one surface (usually hot end) to a component with rigid structure. It's worth noted that when we solder the TEC to a rigid structure component, other components or small circuits shall be soldered in the cold end of the TEC, which will not connect to the external structure rigidly. During soldering, in order to prevent the TEC from excessive heat, we need to control the temperature precisely. In the meantime, the temperature during the process will not exceed the operating temperature of TECs. Since the coefficients of thermal expansions of ceramic plates, heat sink and the object are different, it's not recommended to use soldering method in over 15×15 mm2 TECs.(more)

Similar to ATH10KL2A and ATH10KL2C, ATH10KL2B is also a ntc thermistor assembly packaged in a ring lug. The inner ntc thermistor head is ATH10K1R25, thus, they have similar characteristics, while ATH10KL2B is for easy mounting.(more)

(c) Use proper pre tin in the soldering area of the surface of the heat sink. Thus, the melting point of the solder shall be lower or equal to the maximum operating temperature of the thermoelectric cooler. When plating tin on the heat sink, we shall keep the temperature of the heat sink in a proper temperature, which could melt the solder but not exceed the maximum operating temperature of the TEC .(more)

NTC thermistors are more and more popular in many applications that need temperature control or measurement. ATI released several series of ntc thermistors including ATH10KR8B, ATH10KL2A, ATH10K1R25 and ATH100KR8 series. ATH100KR8 series ntc thermistors are mainly introduced here.(more)

Thermoelectric cooler (TEC) is built on the Peltier effect. Due to the internal structure features of semiconductor material, it has more obvious thermoelectric effects than other metals do. Therefore, semiconductor material is usually used for making TEC.(more)