...
6) Transient-suppressor diodes:
These are connected at critical points in the circuit
...
These are connected , between input and output pins to ground (keep them
Kept close to terminals).
Clamp voltage to a safe value based on the rating
To suppress ESD transients, place a ferrite bead on the input lead and connect a low value capacitor from the input lead to ground. LC at input filters the energy in the ESD transient to ground.