Can someone please help with how to calculate the series current limiting resistors to be connected from STM32H7 or any MCU to transceivers or any other interfaces? Is there a general thumb rule followed? Also how to calculate the wattage of resistor...

Need help with identifying the right TVS diode for load dump protection of our device. The test standard is MIL-STD-1275E which has 28V nominal working voltage with Ri = 0.5 ohm. The surge has a pulse duration of 50ms, Us = 100V, 5 number of pulses w...