No, it’s not a characteristic of the breed. It’s not a characterizing of any breed to bite people for no reason.
He may have an unstable temperament due to his breeding, or he may just need training. He also needs to be examined by a vet to rule out anything medical. Dogs are good at hiding if they are in pain, but a dog in pain will sometimes bite or snap. Some dogs will even start to snap and bite if they are losing their eyesight or their hearing. All of this needs to be ruled out.
If a medical cause is ruled out, get in touch with a reputable trainer and have him/her evaluate your dog. Your dog may just need more training, or a different kind of training, than you're capable of providing yourself.
If by "what to do get rid?" you mean surrender him to a shelter, do understand that most shelters temperament test, and if your dog is a biter, many shelters will euthanize him on the spot, and never even give him a chance to be adopted. And if you intend to rehome him yourself, you do need to be 100% completely honest with whoever adopts him that he has a history of seemingly unprovoked biting. It's very difficult to responsibly rehome a dog with a bite history. A breed-specific rescue might be a good option, since they would have more experience with rehoming dogs with special issues.