temperature rise and is now obsolete.Ĭalculates the current a via needs to raise its temperature over ambient per IPC-2152. The IPC-2221 has been superseded by the IPC-2152 for finding conductor current vs. This version uses the IPC-2221 formula for finding conductor current vs. Version 4 series is accurate to the IPC-2152 but may be too conservative in many cases. The conservative chart in the IPC-2152 is really just the internal chart from the IPC-2221 so that was the formula used. This version uses the IPC-2152 “conservative” chart for finding conductor current vs. We feel that all values in the version 5 series are within +/-10 of measured values plotted on the charts. We have also been working on developing our own formulas for current to get as close as possible to the measured data charts of the IPC-2152. temperature rise and also adds the ability to include other PCB parameters that can affect temperature rise (like PCB thickness and plane usage). No longer uses multipliers for cross sectional area as related to the IPC-2152.įunctionally the same as the series 6 as related to the IPC-2152.įunctionally the same as the series 5 as related to the IPC-2152. All online calculators that use the IPC-2221 formula are now obsolete!!! If you are not yet familiar with the IPC-2152 then please be aware that there are two separate charts for finding conductor current vs. In order to understand the PCB Toolkit version differences, I have added this brief description of the version series. Help keep the Saturn PCB Toolkit free by making an online donation today!

Download in box v4 6.8 free