address:88 Ling Shan Road, Xukou, Wuzhong District, Suzhou City, Jiangsu Province, Unit 9A, 5th Floor, Liandong U Valley.
Telephone:0512-66559708
If you have any other questions, you can contact us by email
Contact Email
marketing@tronovo.com
Concern
1. A batch of “dual analog switch” circuits were mounted on a PCB, and after conformal coating, a few samples showed deterioration in input characteristics.
2. After removing the aluminum, very small breakdown holes were found in the oxide layer on the n+ ring
prescription
1. After failure analysis, it was found that a short circuit and leakage occurred at the input (base) where the aluminum metallization spans the diffusion layer of the n+ protection ring.
2. Photolithographic etching is faster and electrostatic discharge damage occurs.
3. Photolithographic etching is faster and electrostatic discharge damage can occur.