OTP-N538U Overview
THERMOPILE Thermopile Sensor OTP-N538U Revision Date: 2018/01/08 (Rev.05) OTP- N538U The OTP-N538U is a thermopile sensor in classic TO-46 housing. The sensor is posed of 116 elements of thermocouple in series on a floating micro-membrane having an active area of diameter 545 μm.