NJM431U#IC VREF SHUNT PREC ADJ SOT-89-3|NJR|Lead free|RoHS Compliant TL431AQPK TL431QPK NJM431UIC VREF SHUNT PREC ADJ SOT-89-3|NJR|Lead free|RoHS Compliant TL431AQPK TL431QPK