ATI NTC thermistors

For a temperature regulating system, NTC thermistor is very important as the temperature sensor. Glass encapsulated thermistor has better performance than epoxy coated thermistor, such as zero short and long term drift, which is an important factor in order to achieve high system performance. Low cost epoxy coated NTC thermistor have large short and long term resistance drift, so when sensing the same temperature, the resistance changes with time, it will lead to a wrong sensed temperature, resulting in a drifted target object temperature.

You can take some factors into consideration when choosing a proper NTC thermistor in temperature control system: operating temperature range, sensitivity, drift, size, mounting method, etc. Our NTC thermistors are all encapsulated with glass material, with compact size. Some thermistor come with bare leads, while some are lugged form. The former is used for point sensing in order to achieve high accuracy; the latter is for bulk temperature sensing, such as optical components, etc.

Our NTC thermistors work well with our laser driver, Peltier controller, as well as heat sink in temperature control system and other systems.

Figure 1. The photo of an actual NTC thermistor

If you have any questions about choosing and using NTC thermistors and thermistor assemblies, please contact us.

Our web site is http://www.analogtechnologies.com/thermistor.html

NTC thermistor characteristics

Thermistor is a kind of sensitive elements. According to different temperature coefficients, thermistor can be divided into positive temperature coefficient thermistor (PTC thermistor) and negative temperature coefficient thermistor (NTC thermistor). The typical characteristic of thermistor is temperature sensitive. With temperature increasing, the PTC thermistor resistance will increase and the NTC thermistor resistance will decrease. PTC thermistor and NTC thermistor both belongs to semiconductor devices.

Our company (ATI) specializes in producing NTC thermistor with high accuracy, high reliability, high stability, etc. There are many series of NTC thermistors, such as ATH10K1R25 series,ATH100KR8 series, ATH10KR8 series and so on.

Figure 1. The physical photo of ATH10KR8 series

ATH10KR8 series NTC thermistor is encapsulated with glass for long term stability and reliability. This NTC thermistor has compact size φ0.8mm×1.4mm and high resistance accuracy 1%. What’s more, ATH10KR8 NTC thermistor has quick response time and a wide temperature range −55°C to 250°C.

If you want to know more about NTC thermistor, please contact us.

Our web site is http://www.analogtechnologies.com/thermistor.html

Peltier controller

Based on Peltier effect, thermoelectric cooler (TEC) is built, which can both heat and cool, depending on the direction of DC current. TEC is a heat transfer tool. It has many advantages such as no refrigerant, high precision temperature control, compact size and so on. TEC has been widely used for temperature control of laser system temperature, refrigeration, water heater, air conditioner and computer CPU, etc.

The working state of TEC is based on the current direction and size. In order to realize constant temperature control automatically, Peltier controller (TEC controller) is designed and produced. Our company (ATI) is very good at designing Peltier controller, as shown in Figure 1.

Figure 1. The physical photo of Peltier controller

There are many kinds of Peltier controllers available in our company. For example, TECA1-XV-XV-D series Peltier controllers have high efficiency, high stability, high reliability and compact sizes and some other advantages. They are often utilized to control temperature in laser systems. What’s more, we can customize a specialized Peltier controller for our customers.

If you want to know more about Peltier controllers and TECs, please contact us.

Our web site is http://www.analogtechnologies.com/tec-controller.html

Digital Peltier/Fan Controller ATFC107D

ATFC107D is designed to drive a Peltier/Fan assembly in order to regulate an enclosed chamber temperature. The assembly shows the working parameters in real time. These parameters can also be sent to a PC though USB port. The output stage has a soft-start and soft-cut function for driving the TECs so that the TEC’s life time will be longer.

This controller assembly is consisted of a Peltier controller, a digital display, a fan controller, and a relay output. The Peltier controller is used to control Peltier module. The fan controller can control the fan. These components are assembled together into a whole digital Peltier/fan controller ATFC107D.   As shown in the figure below, this device show some temperatures, such as safety high temperature, safety low temperature, cool on temperature, heat on temperature, satisfied, TEC outside temperature, TEC inside temperature and chamber temperature. There are several LEDs indicating which temperature the digital display is showing. There are also some buttons to select the temperature. Therefore, it is overall an easy-to-use device in monitoring and controlling the chamber temperature.

The photos of actual ATFC107D

Please read the datasheet for more detail information or contact us directly.

Our web site is http://www.analogtechnologies.com/ATFC107D.html 

SMT Inductor Kits

SMT Inductor Kits are designed for electronic designers in collecting and organizing surface mount inductors. We have a few types of inductor kits, which contain different inductors of commonly used values, with different quantities. These inductor kits offer a simplest way for obtaining any value of inductors within the shortest time with the highest efficiency.

There are 128 individual compartments inside the inductor kits. Each compartment holds a certain amount of inductors of a certain value. According to inductor size, for 0402 size, we have 74 values and 43 values; for 0603 size, we have 88 values and 35 values; 0805 size comes with 85 values; and 1008 size is with 60 values. If you have special requirements about the values and quantity, we can customize one for you. All these values are commonly used in electronic design. Moreover, the quality of these inductors can be guaranteed since they are all from qualified manufacturers, like Viking, Taiyo, etc. It’s easy to refill the inductors when you use up the original inductors.

Physical photo of inductor kits

More SMT kits can be found in our website, like resistor kits and capacitor kits. They are very popular in US and overseas market for over 20 years.

Our web site is http://www.analogtechnologies.com/inductorkits.html

NTC thermistor temperature characteristics

Thermistor with negative temperature coefficient is called NTC thermistor. NTC thermistor is made of such metal oxide materials as manganese, cobalt, nickel and copper, etc., with semiconductor. NTC thermistor has compact size, resistance and temperature characteristics with small fluctuations, etc. As NTC thermistor has fast response to all kinds of temperature changes, it can be used to realize high sensitivity and high precision detection.

Some thermistor with positive temperature coefficient is not suitable for applications in practical situation because with the increase of temperature, its resistance will increase, which can lead to signal distortion. With temperature increasing, NTC thermistor resistance will decrease. So in order to make the element resistance remained in a wide temperature range, NTC can be used for temperature compensation.

There are various NTC thermistors in our company (ATI). NTC thermistor released by us has high reliability and stability, high accuracy and some other advantages, which can used to measure laser diode, optical element, etc. What’s more, it can also be utilized to control temperature of TEC controller and driver. As NTC thermistor has glass wrapping, it has low drift.

If you want to know more about NTC thermistor, please contact us.

Our web site is http://www.analogtechnologies.com/thermistor.html

Surface Mount Inductor Kits

We are introducing an easy and convenient way to organize and sort out SMT inductors. Tiny and precise SMT components like SMT inductors, resistors and capacitors, are very common in electronic designer’s bench, but it’s hard to organize them in a small place. In order to save time and space, ATI provides a smart way for this: Super Surface Mount Inductor Kits.

These inductor kits contain various values and quantities of inductors, which come from renowned inductor manufacturer, such as TDK, Viking, Taiyo, etc. Therefore, the quality of the inductor in the inductor kits is very reliable. Moreover, you pay less than the cost of buying the inductors alone from retailers. The inductance is from 0.6nH to 1000uH. When a certain value of the inductor in the inductor kits is used up, you can refill it in the corresponding compartment. Each compartment comes with a label showing corresponding inductor value in the compartment lid.

 Physical photo of inductor kits

More component kits can be found in our website, like resistor kits and capacitor kits, which have been sold in US and overseas market for over 20 years.

Our web site is http://www.analogtechnologies.com/inductorkits.html

NTC thermistor packaged with glass

Glass sealed NTC thermistor is a kind of NTC thermistors, which is mainly used for temperature compensation. The main features of glass sealed NTC thermistor is high reliability, high stability, compact size, light weight, high temperature resistance and moisture resistance, but its response time is little longer. What’s more, this NTC thermistor has high accuracy of measurement and wide range of temperature. It is very convenient to be installed on PCB. Because of the glass wrapping, this NTC thermistor can be utilized in high-temperature and high-moisture environment. Figure 1 is the photo of glass sealed NTC thermistor.

Figure 1. The photo of NTC thermistorpackaged with glass

With the development of Electronic Science and technology, NTC thermistor packaged with glass has been widely used in electronic field, industrial field and so on.

NTC thermistor released by our company (ATI) has good quality and stability, which can be used for temperature control ofTEC controller or driver. There are many kinds of thermistors available to select, such as such as ATH10KL2A, ATH100KR8,ATH10K1R25 and so on.

If you want to know more about NTC thermistor, please contact us.

Our web site is http://www.analogtechnologies.com/thermistor.html

Peltier Controller Evaluation board TECEV104 (II)

Continued from the article ‘Peltier Controller Evaluation board TECEV104 (I)’.

In order to better understand this Peltier controller evaluation board, let’s get more information about the board.

A tuning circuit and an application circuit constitute this Peltier controller evaluation board. This evaluation board can set the output voltage limit, tune the compensation network, set internal operating temperature point, and has an LED for indicating the temperature status of the Peltier controller. This Peltier controller evaluation board comes with numerous connection pads in order to make connections with external components and instruments.

As shown in the figure below, the Peltier controller is located in the center frame of the evaluation board, thus, it is only applicable for DIP type Peltier controller. The voltages of all its pins can be measured directly by probing the vias on the left and right side of the module sockets which are connected directly with pins of the electronic module. Moreover, the figure below shows the top silkscreen layer. There is no bottom silkscreen layer on the board.

The photos of actual peltier controller evaluation board

You can visit our website for more information.

Our web site is

http://www.analogtechnologies.com/Evaluation_Board_TECEV104.html 

The features of NTC thermsitor

Thermistor is a kind of sensitive elements. According to different temperature coefficient, thermistor can be mainly divided into two types, positive temperature coefficient (PTC) thermistor and negative temperature coefficient (NTC) thermistor. With the increase of temperature, the resistance of PTC thermistor will increase, and the resistance of NTC thermistor will decrease. PTC thermistor and NTC thermistor both belong to semiconductor devices.

The main characteristics of thermistor are high sensitivity, wide range of working temperature, compact size, easy to use, good stability, strong overload capacity, etc.

Figure 1. The photo of NTC thermistor

NTC thermistor is made up of manganese, cobalt, nickel and copper and other metal oxides. The photo of NTC thermistor is shown in Figure 1. Within the range of working temperature, the main feature of NTC thermistor is that its resistance will decrease with temperature increasing. Based on resistance / temperature characteristics and voltage / current characteristics, NTC thermistor has been widely used in household electrical appliances so as to achieve automatic gain adjustment, over load protection, temperature control, temperature compensation, voltage stability, and so on.

If you want to know about NTC thermistor, please contact us.

Our web site ishttp://www.analogtechnologies.com/thermistor.html