A surface mount fast response high temperature resistant temperature sensor

Abstract

The invention relates to a surface-mount and fast-response temperature sensor with high temperature resistance, comprising a ceramic substrate, a thermistor chip, two magnesium wires, two electron wires, and two glass layers. The ceramic substrate is provided with a mounting through hole, and two spaced metal welding layers are arranged on the surface thereof. The thermistor chip is arranged in the mounting through hole, and comprises a cubic ceramic body and two electrodes respectively disposed on upper and lower sides of the ceramic body, a side surface of which is flush with a bottom surface of the ceramic substrate. One end of each of the two magnesium wires is electrically connected to the two electrodes of the thermistor chip, and the other ends thereof are electrically connected tothe two metal solder layers respectively. One end of each of the two electron wires is electrically connected to the two metal solder layers, respectively. The two glass layers are respectively encapsulated on the surface and the bottom surface of the ceramic substrate. The temperature sensor of the invention has the advantages of fast response speed, sensitive measurement, high mechanical strength and high temperature resistance.

Description

Technical field [0001] The present invention relates to the technical field of electronic components, in particular to a surface mount fast response high temperature resistant temperature sensor. Background technique [0002] The NTC temperature sensor connects the high-precision thermistor elements or chips with different appearance and structure to the wire reliably according to the different technical requirements of the actual application environment of the sensor, using safe processing techniques such as soldering, metal package (crimping) welding or micro spot welding , And then carry out glue retention, insulation, moisture-proof and waterproof treatment, and apply excellent epoxy resin package (pouring) material to seal and fix the thermistor element or chip in the metal or non-metal protective shell to form a Stable and reliable component assembly required by temperature. NTC temperature sensor has the advantages of good insulation and sealing, resistance to mechanical ...

AI Technical Summary

Problems solved by technology

However, in the NTC temperature sensor made by this process, the NTC thermistor chip is located in the middle of the metal shell, making it far away from the measured object during temperature measurement, which increases the thermal response time and makes the sensor not fast and accurate. Measure the temperature of the measured object, the response speed is slow

Images