Single-ended glass-sealed NTC thermistor graphite die and use method thereof

Abstract

The invention discloses a single-ended glass-sealed NTC thermistor graphite die and a use method thereof .The single-ended glass-sealed NTC thermistor graphite die comprises a first graphite plate and a second graphite, first dumet wire leads are fixed on the first graphite plate, and second dumet wire leads are fixed on the second graphite plate; multiple first lead grooves are longitudinally formed in the first surface of the first graphite plate, and multiple first glue guide grooves are transversely formed in the first surface of the first graphite plate; multiple second lead grooves are longitudinally formed in the first surface of the second graphite plate, and multiple second glue guide grooves are transversely formed in the first surface of the second graphite plate .The single-ended glass-sealed NTC thermistor graphite die has the advantages of being simple and reasonable in structure, convenient to use, low in manufacturing cost and the like, the efficiency of manufacturing single-ended glass-sealed NTC thermistors is high, the operability is simple, the product consistency is good, and batched production can be achieved; the thermistors which are good in consistency and excellent in stability can be produced in a batched mode according to the production technology and the fixture.

Description

technical field [0001] The invention relates to the technical field of sensitive element manufacturing, in particular to a single-end glass-encapsulated NTC thermistor graphite mold and a use method thereof. Background technique [0002] Temperature is one of the seven physical quantities. NTC thermistor is a semiconductor ceramic element sensitive to temperature. It has the characteristics of fast response, high precision, good stability and low cost. It is widely used in various temperature-related occasions. Among them, the high-precision temperature measuring element requires small size, fast response time, high precision and good stability of resistance value exchange. The manufacture of this high-precision thermistor is usually done by dicing, dicing and encapsulation. So far, the only high-precision temperature-measuring NTC thermistors produced in my country are glass-encapsulated NTC thermistors with axial leads and epoxy-encapsulated NTC thermistors with single-e...

AI Technical Summary

Problems solved by technology

However, the usual packaging methods (epoxy resin packaging, SMD packaging) cannot meet the requirements of high temperature and stable operation.

The diode package can work at high temperature to a certain extent, but because it is Dumet wire directly contacting the chip without soldering, its thermal shock resistance is poor

In addition, its two-way outlet method determines that its use space must be large, which is not suitable for mass production and miniaturization of sensors.

Images