My customer product is OCXO. It use TI CSD17308Q3; This OCXO need temperature on 110 degrees; product use Ampfier to driver MOS and MOS heat crystal through thermal conductive adhesive ; The early stage of the product aging test is ok, but some Mosfet do not work after about 7 days;
A strange appearance is that these problem MOSFET can work again after heat gun heat it. So anybody can give some comments?
Does Mosfet not work because it has heat effect ?