What to Consider When Purchasing Custom Resistors
When you think of a resistor, you might be fooled by its apparent simplicity and functionality. However, a resistor offers more than meets the eye. There are many parameters that go into designing the resistor that makes it an essential component in every circuit. Resistors are designed to impede the current flow to produce the required voltage drop.
The resistance offered is the primary function that you should consider whenever you are looking for a resistor. This value ranges from a fraction of an ohm to a mega ohm. Learn more about Custom Resistor atcustom precision resistors
. The former is used in a shunt resistor to sense current in systems with load while the latter is implemented in low current high-voltage circuits. One of the most common uses of a mega ohm resistor is in X-ray sources.
Another metric to consider when purchasing custom resistors is the initial tolerance. This is the variation that you get from a nominal value and can be expected when the resistor is measured even before it is put into use. Many applications use a standard tolerance but others accept loose tolerance which can then be calibrated and trimmed before being used.
The resistor’s power rating is also a crucial metric that should be considered before you make a purchase. Each resistor can only dissipate power based on the amount of current that flows through it. Small resistors accept to a fraction of a watt while larger ones can pass hundreds of watts. When looking for a custom resistor, you will notice that the higher the power rating, the costlier it becomes. Never use a resistor so close to its maximum specification since it will cause stress and exceed ratings unintentionally.
Another parameter to keep in mind is the voltage ratings. Most resistors in the market are usually used in low and modest voltage. This is usually in singles or tens of power voltages. Read more about Custom Resistor by clicking custom power resistor. However, in some cases there are applications that need hundreds or thousands of volts. The physical construction of the resistor should also be good enough to withstand potential differences across leads and meet the set regulatory standards. A lead spacing that is too close can cause flashover or arcing between the leads.
If you are developing an electronic and would like a custom resistor for it, make sure to determine the correct metrics mentioned above. This allows the manufacturer to develop a resistor of a specific size and also one that has all the specifications you’ve provided. Custom resistors are ideal for you to get the most out of your electronic.