This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
如题,我们怀疑买到了假的OPA549芯片,请问有什么方法能辨别出假货,芯片装上板子上直接就不行。请大家指点一下,谢谢