Find us on Google maps here

 

Current Carrying Capacity Calculator

Important disclaimer

Results given by the Current Calculator are to be used as reference only. These figures should be considered as a useful guide only. Many other factors such as the cooling and air flow over the board will have a marked effect. No responsibility can be taken for their use whatsoever.

The Calculator

All conductors which carry current will be at a temperature higher than air temperature by a temperature rise (above air temperature) T which depends upon current carried (I) Amperes , conductor width (W) and copper thickness.

For a 1 oz/ft² copper foil PCB there is an empirical formula. Assume a 40°C (104°F) maximum T and determine the maximum current allowed through the conductors can be derived using this calculator.

Using the Minnitron Ltd. current calculator is easy:

  1. Enter the current carrying capacity (i)
    2. or the width (w) of the track in the boxes opposite
  2. Choose whether you want the result in mm or inches
  3. Press the Calculate Button!
  4. To perform another calculation "clear values"
Current carrying capacity (Amps)
Width of track
mm
inches

The unknown value will then be calculated.

Minnitron Ltd. 20 Leigh Road. Haine Industrial Park. Ramsgate. Kent. CT12 5EU. Telephone +44 (0) 1843 599353.

Copyright © 2007 - Minnitron Ltd