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Use of TVS diode for ESD protection:
TVS diode provides voltage suppression. Considering we are dealing with PWM, the bidirectional TVS diode would be the better option as opposed to the unidirectional TVS diode. Cost per unit is $0.59, $14.75 total (25 diodes). Has a reverse standoff of 5V and a breakdown of 6.4V.
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