PC817B(p/b) PC817B(PC817X2CSP9F) PC817B(PC817X2NIP06) PC817B(PC817X2NSZ9F) PC817B(ROHS) PC817B(X2NIP1B) PC817B(X2NSZ) PC817B(X2NSZ2B) PC817B(X2NSZW) PC817B.