And like was said, it depends.Like I said, shouldn't the resistors prevent a short circuit to the point it burns the transistor?
Hmm, i get itAnd like was said, it depends.
It depends upon the value of the resistor, the max current rating of the transistor, and the heat dissipation ability of the package housing the IC.
That can't be determined from just a schematic.
30mA?What does Ohms law tell you about power dissipation in the 130 Ω resistor assuming 0.2V of Vce drop on Q5 and 0.6V drop on D2 with Vcc at +5V DC?
No, that 135 mA in the resistor will generate heat which will cause heating on the die. It may or may not be enough to cause damage. You have to look at the thermal resistance to estimate the temperature rise. For example if the thermal resistance from "junction" to "ambient" is 75 °C/watt then your 135 mW times 75 °C/watt gives about 10 °C. If the ambient temperature is 20 °C, then a 10 °C rise won't do much harm. Put the device inside an enclosure with no airflow and that 10 °C rise becomes more problematic. Do it for multiple gates in a package and it becomes more problematic.Oh, sure. So around 135mW is the answer? enough to blow the transistor?
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by Jake Hertz