ZHCSCO4C May 2014 – February 2017 TPD4E6B06
PRODUCTION DATA.
10 Layout
10.1 Layout Guidelines
- Place the device as close to the connector as possible.
- EMI during an ESD event can couple from the trace being struck to other nearby unprotected traces, resulting in early system failures.
- The PCB designer must minimize the possibility of EMI coupling by keeping any unprotected traces away from the protected traces which are between the TVS and the connector.
- Route the protected traces as straight as possible.
- Eliminate any sharp corners on the protected traces between the TVS and the connector by using rounded corners with the largest radii possible.
- Electric fields tend to build up on corners, increasing EMI coupling.
10.2 Layout Examples
Figure 12. Single Layer Routing
Figure 13. Double Layer Routing