1. SMT ambient temperature is controlled at23℃ to 27℃

2. The humidity of SMT environment shouldbe controlled within 40%-zhi70%

3. SMT environmental dust-proofrequirements: dao all personnel entering the SMT workshop must wear staticclothes, static shoes and wear static caps to enter the workshop through theair shower door

4. SMT environment anti-staticrequirements: Class I electrostatic operation area, electrostatic controltarget <100V　If the customer has special strict electrostatic controlrequirements, it will be classified as a level 0 electrostatic operation area,static control target <50V　 and anti-static posted at the entrance of SMT Staticidentification.