Instructions, Silicon Diode and GaAIAs Diode （指令、硅二极管和GaAIAs二极管）.pdfVIP

Instructions, Silicon Diode and GaAlAs Diode Temperature Sensor Installation, Model DT-470, 471, 670, and 671 CU and DI Packages, and TG-120-CU Package CAUTION: This temperature sensor is sensitive to Electrostatic Discharge (ESD). Use ESD precautionary procedures when handling, or making mechanical or electrical connections to this device in order to avoid performance degradation or loss of functionality. There are three aspects of using a cryogenic temperature sensor which are critical to its optimum performance. The first involves the proper mounting of the sensor package, the second relates the proper joining of sensor lead wires and connecting wires. The final concern is the thermal anchoring of the lead wires. Although the sequence in which these areas should be addressed is not set in stone, all elements covered under each aspect should be adhered to for maximum operating capabilities of the sensor. SENSOR MOUNTING The DT-470/471/670/671 CU, DI, and TG-120-CU packages combine a standard SD sensor with a gold-plated copper mounting bobbin to form the CU or DI package. The mounting bobbin of this package contains a 3.1 mm (0.122 inch) diameter hole (0.03 inch off center) designed for mounting with a #4-40 or M3 screw. 1. A threaded hole in your mounting surface is necessary for mounting the sensor package. The hole in the sensor package will accommodate a #4-40 or M3 screw. A brass screw is recommended due to the thermal contractions/expansions of the final assembly. 2. The threaded hole and surrounding surface should be cleaned with a solvent such as Acetone followed by an Isopropyl Alcohol rinse. Allow time for the solvents to evaporate before sensor mounting. 3. Apply a small amount of Apiezon® N grease to the threads of the screw. To ensure good thermal contact between the sensor and mounting surface, use an indium washer/preform or