What does this calculator do? Compared to other calculators we have posted, this one is extremely simple. Even if the formula for DC heat dissipation in a resistor isn't at your fingertips, a little Ohm's Law and the definition of power can easily create it. On the other hand, forgettin...
ColorTypical Forward Voltage (Vf)Supply Voltage (Vs)Forward Current (If)Recommended Resistor SizeRecommended Resistor Power Rating Red2 V5 V20 mA150 Ω0.06 W Green2.1 V5 V20 mA145 Ω0.058 W Blue3.6 V5 V20 mA70 Ω0.028 W White3.6 V5 V20 mA70 Ω0.028 W ...
We can't determine a resistor's wattage from its color code (learn how to calculate it with our resistor color code calculator!), but its size can help us here. A resistor's size varies according to its wattage or power rating. For example, the smallest carbon composition resistor's powe...
For an internal resistor, refer to Appendix A to determine the continuous power rating of the resistor in the given drive you are using. Skip this calculation if an external dynamic brake resistor will be used. In this case, a 10 Hp PowerFlex 70 drive has an internal resistor rated for ...
PackageSize in inches (LxW)Size in mm (LxW)Power rating 0201 0.024" x 0.012" 0.6 mm x 0.3 mm 1/20W 0402 0.04" x 0.02" 1.0 mm x 0.5 mm 1/16W 0603 0.063" x 0.031" 1.6 mm x 0.8 mm 1/16W 0805 0.08" x 0.05" 2.0 mm x 1.25 mm 1/10W 1206 0.126" x 0.063" 3.2 mm x...
The LED series resistor calculator is a game-changer for those working with LED lighting systems. Simply input the required parameters, and Resistor Calc will recommend the ideal resistor value to ensure proper current limiting and protect your LEDs from potential damage, ensuring optimal performance ...
LED resistance calculator will help you determine the value of the resistor so you can add in series with the LED to limit the current. Just input the indicated values and the result will be calculate automatically. The result include Resistor Value, Resistor Power Dissipation and Recommended Resi...
If the bus voltage increases too much, the power transistor rating can be exceeded causing component failure. A shunt braking resistor can be connected to the servo drive to dissipate this excess of regenerated energy, preventing potentially damaging voltage levels....
Standard resistors often have a power rating of 0.25W (Watt). If you look at a worst-case scenario, all the 9V of the voltage source would drop across the resistor. Power dissipation in a resistor can be calculated with this formula: ...
Almost all leaded resistors that have a power rating of 1 watt or less will come with a color code printed on it. A resistor can feature up to 6 different color bands. Together these color bands specify the attributes of that resistor. These attributes include the base resistance value, ...