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RE: Tantalum's come in 0.5w, 1w, and 2w

Posted by Lew (A) on November 18, 2008 at 19:45:17

In Reply to: Tantalum's come in 0.5w, 1w, and 2w posted by Cousin Billy on November 18, 2008 at 16:56:10:

Choose the wattage based on the actual power being dropped across the resistor. Usually one would want some headroom as well. The power in Watts is equal to the product of the current (in Amperes) times voltage (in Volts). In this case, the wattage needed is miniscule. Think of the output of a typical MC cartridge, which is in fractions of a millivolt. Therefore, an 0.5W resistor is way overkill. You could easily get by with a 1/8 W resistor, if tants were made that small. Bad news may be that Angela Instruments is fresh out of 100-ohm tantalum resistors, if that's the value you desire. (I just tried to buy a few.) If that's the case, I'd advice you to go for Caddock TF020 or nude Vishay.

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