전압 조정기 다이오드 SOT-23 BZX84C2V4 BZX84C43 BZX84C 2.7/3.3/5.1/6.8V/9.1V/10/12V 18V 20V 27V 33V 36V Z9/Y1, 50 개/Y2/Y3/Y17