Save it now! Quick and practical Digi-Key online calculators, all summarized this time~

Digi-Key customers often call or leave messages asking for help because they can't find a part with a specific specification on our website. We've found that many times it's because the customer isn't looking for the part with the correct specifications. Capacitors are a classic example.

On the Digi-Key website, capacitance is listed in pF (picofarads) or µF (microfarads). In practice, however, capacitance is often listed in nF (nanofarads) or F ( farads ). In this case, the Digi-Key calculator comes in handy. When using the Capacitance Conversion Calculator , you can convert values ​​with the push of a button.

Another popular calculator among customers is the battery life calculator. Generally, battery life is calculated based on the rated current, which is measured in milliampere hours ( mAh). Ampere is a unit of current that measures the current flowing to a load. The battery life or battery capacity can be calculated using the rated input current of the battery and the load current of the circuit. The lower the load current, the longer the battery life and vice versa. The capacity of a battery can be mathematically calculated using the following formula:

Battery life ( h) = battery capacity (mAh) / load current (mA) * 0.70

Note: The coefficient of 0.7 is an abstraction of the external factors that may affect battery life.

Another tool is the Resistor Color Code Calculator, which can help determine the resistance value of through-hole resistors on your board. The Digi-Key calculator works with four-, five-, or six-ring resistors .

The following table is a standard four-ring color code chart .

In addition to these, we also provide our customers with many other useful calculators.

You can use the Digi-Key calculator as a quick, easy-to-use tool. Don't forget to bookmark this article for future reference!

For more useful technical tools from Digi-Key , see :

• Digi-Key Technology Forum

• Digi-Key 's EDA and Design Tools

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If you have any questions, please contact Digi-Key's customer service team.

China (RMB) Customer Service

- 400-920-1199

- service.sh@digikey.com

- QQ online real-time consultation (QQ number: 4009201199)

China (US dollars) / Hong Kong Customer Service

- 400-882-4440

- 852-3104-0500

- china.support@digikey.com