深圳市尚想信息技术有限公司

Circuit board layout is critical for the suppression of ESD, EFT and surge transients. The following guidelines are recommended: 1. Place the protection device as close to the input terminal or connector as possible. 2. The path length between the protection device and the protected line should be minimized. 3. Keep parallel signal paths to a minimum. 4. Avoid running protection conductors in parallel with unprotected conductor. 5. Minimize all printed-circuit board conductive loops including power and ground loops. 6. Minimize the length of the transient return path to ground. 7. Avoid using shared transient return paths to a common ground point. 8. Ground planes should be used whenever possible. For multilayer printed-circuit boards, use ground vias.