Post by thread:Re[2]: answer = ULN2803, now, where to get it?

>As for total max current for the device, I think you are okay as long >as you do not exceed the total package power dissipation of 2.25W >(this gets de-rated above 25 degree centigrade). DO NOT, EVER, exceed the current rating on the individual drivers. These drivers have very little tolerance for over-current. I have seen them fail consistently (shorted, usually the whole package) when subjected to repeated momentary peak currents of 2x the rated current, even though the power dissipation was well within the rating.