Resistors/caps with high temperature tolerance

In summary, the individual is looking to purchase resistors and capacitors that can withstand temperatures up to 125 deg. cel. They are wondering where they can find these components and what types they should be looking for. It is noted that resistors are commonly rated up to 155C, but the power levels also need to be considered. For capacitors, ceramic caps are rated up to 125C and it is suggested to look at the tempco graph for each type to ensure it will work with the circuit. X7R ceramic caps are also recommended as they have a flat performance up to 125C. It is suggested to check the Digikey catalog for examples.
  • #1
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Hi guys,

need to purchase some resisters and caps that can tolerate temperatures upto 125 deg. cel.

any ideas where i can find some - or what type i should be looking for??

thanks!
 
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  • #2
Resistors are routinely rated up to 155C. What power levels are you talking about?

Caps are a different matter, depending on the value and type. Ceramic caps are rated up to 125C -- you just have to look at the tempco graph for each ceramic type in order to see if the variation will be tolerated by your circuit. If you can use X7R ceramic caps, they are pretty flat up to 125C.

Just look in your Digikey catalog for some examples.
 
  • #3


Hi there,

There are several options for resistors and capacitors with high temperature tolerance. For resistors, you can look for metal film resistors or ceramic resistors, which can withstand temperatures up to 125 deg. cel. You can also consider using wirewound resistors, which have a higher power rating and can handle high temperatures.

As for capacitors, you can look for ceramic or tantalum capacitors, which can tolerate temperatures up to 125 deg. cel. You can also consider using mica capacitors, which have a high temperature coefficient and can withstand high temperatures.

It's important to note that the temperature tolerance of these components may vary depending on the manufacturer, so be sure to check the datasheets before purchasing. Additionally, make sure to properly calculate the power rating and choose components that can handle the required power at high temperatures.

You can find these components at most electronic stores or online retailers. Just make sure to specify the temperature tolerance in your search. I hope this helps!
 

What is the purpose of using resistors/caps with high temperature tolerance?

The purpose of using resistors/caps with high temperature tolerance is to ensure that the components can withstand high temperatures without becoming damaged or malfunctioning. This is important in applications where heat is generated or in environments with high temperatures.

What is the maximum temperature that resistors/caps with high temperature tolerance can withstand?

The maximum temperature that resistors/caps with high temperature tolerance can withstand varies depending on the specific component and its manufacturer. Generally, these components can withstand temperatures ranging from 150°C to 250°C.

What factors determine the temperature tolerance of resistors/caps?

The temperature tolerance of resistors/caps depends on several factors, including the materials used in their construction, the design and size of the component, and the manufacturing process. Components made from high-quality materials and designed specifically for high temperatures will have a higher temperature tolerance.

What are the benefits of using resistors/caps with high temperature tolerance?

Using resistors/caps with high temperature tolerance can increase the reliability and lifespan of electronic devices, as they can withstand extreme temperatures without failing. This can also prevent the need for frequent replacements and repairs, saving time and money in the long run.

Are there any limitations to using resistors/caps with high temperature tolerance?

While resistors/caps with high temperature tolerance are designed to withstand extreme temperatures, they may still have limitations. For example, prolonged exposure to very high temperatures or rapid temperature fluctuations may still cause damage to these components. It is important to consult with the manufacturer's specifications and guidelines when using these components to ensure proper usage and avoid any limitations.

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