A resistor is an electronic component with two terminals that Is used to limit current, divide voltage or timing applications. Resistors are passive components that complement active components like micro-controllers or op-amps for a lot of different kind of operations. Some types of resistors can also be used to change the properties of circuits. There are different types of resistors on the market. In this article, we will talk about some of the types you can use.
Thermistors are resistors with variable resistance that changes with the temperature. NTC thermistors are used when you need to work with a wide range of temperatures. Their resistance decreases depending on the temperature and they work well with temperature sensors between -55 and 200C. On the other hand, PTC resistors are used when you have to work with a fast change of resistance at different temperatures. If you are looking to put your hand on a thermistor at the best price use a website that helps you compare prices for electronic parts.
Through-hole resistors can be used with breadboards and are easily replaceable so their main use is prototypes. Their uses are similar to chip SMD resistor uses. Pull-up/pull-down voltage division, current limiting, and filtering are the main operations they will perform. Carbon film resistors have a big variation the most applications replaced them with metal film resistors. Their temperature coefficient is negative but depends on the dimension and resistance value. Metal film resistors have a small variation and are extremely stable. They are used in many applications because of the small variation and price.
Chip SMD resistors are great for printed circuit boards because they are smaller than through-hole resistors. The most common operations for this type of resistors pull-up/pull-down operations, voltage divisions, or current limiting. You can also use them to disable some parts of a circuit. Chip SMD resistors are divided into thick film resistors and thin film resistors. If there isn’t a required performance thick film resistor are the way to go. They have a higher variation and a higher temperature coefficient. However, if you want performance thin film resistors have lower variation, a low temperature coefficient. They are more expensive than thick film resistors so you should make your choice accordingly.
Now it’s time to buy some resistors. Anyone who is into electrical components knows that you have to use a good electronic component search engine in order to obtain the best parts. OEMSecrets is one of the best out there. On oemsecrets.com you can also compare prices for electronic parts so you will know for sure that you will find the best deal for your resistors.