MF59 glass encapsulated NTC thermistor excellent long-term stability and reliability even when encountering harsh environments and temperatures up 220C. Excellent reliability and able to withstand temperatures up to 220C, the LL-41 temperature sensor has glass encapsulation for applications where space isnot an issue. Tape and reel is available for ease of use.
Shiheng Electronics Characteristic:
High temperature capability up to +220C
Sealed glass package, capability of operating in the harsh environment
Surface Mount
Excellent long-term stability, high precision, broad range of resistance
Tape and reel packaging is available
Without leads, convenient for SMT automatic installation.
More information you can click here
Application:
Automatic work facilities (such as lap-top, copycat, printer and so on)
Digital equipment(such as mobile phone, PDA and etc.)
Rechargeable battery (lithium battery, ni-mh battery Temperature compensation of loops of instrument, integrated circuit, quartz crystal monofier and thermocouple).
The range of resistance under the rated zero power(R25): 0.1~1000K
Glass Encapsulated Thermistor
The allowable tolerance of R25: ±1% ±2% ±3%±5%±10%
The allowable tolerance of B value: ±0.5%±1%
Dissipation factor: model A 2mW/(in still air),model B1mW/ (in still air)
Thermal time constant: model A 10S(in still air),model B 5S(in still air
operating temperature range: -55~220
Rated power at 25:model A 10mW,model B5mW
The latest products relates to a chip-type glass-encapsulated negative temperature coefficient thermistor. It has a glass shell, a thermistor chip and two metal electrodes. The metal electrode is a SMT type, and thermistor chip is fixed in a glass shell. Two metal electrodes are installed at both ends of the glass shell. The metal electrodes at both ends are respectively connected to the electrodes on both sides of the resistance chip through a conductive body integrated with the metal electrode, and the conductive body and the resistance chip are encapsulated in a glass case at a high temperature. The utility model is electrically connected with the outside world through a metal electrode, and the installation space is smaller, the installation is more convenient, the lead-free bending is not easy to damage the product when the installation.
low cost glass encapsulated thermistors are manufactured using super stable NTC chips which are hermetically sealed in a glass diode package. See more.
MF52F Temp-Measurement NTC Thermistor Series
Shiheng Electronics Application
Air condition Equipments/ Heating Apparatus/Electric Thermometer/Liquid Level Sensor/ Automobile Electricity/ Electric Table-board/ Battery of Mobile Telephone
What are PTC thermistors made of?
Most PTC thermistors are made from doped polycrystalline ceramic (containing barium titanate (BaTiO3) and other compounds) which have the property that their resistance rises suddenly at a certain critical temperature. Barium titanate is ferroelectric and its dielectric constant varies with temperature.
Characteristic
high precision NTC thermistors
Small size, Fast response
Steady Operating for long time
Good quality of copherence and interchange
Scale production, high ratio of features to cost
This is a property of a Negative Temperature Coefficient resistor (NTC ).
There are also thermistors that have Positive Temperature Coefficient (PTC for short) which means as the temperature increases, the resistance increases. However, PTC thermistors have a sort of tipping point and greatly change the resistance at some temperature. This makes the PTC thermistor a little harder to interface with. For this reason, for most low-cost temperature measurement, NTC thermistors are preferred.
For the remainder of the article, you can assume we'll be referring to NTC type thermistors.
Knowing the temperature in a project can a very useful piece of data to have handy. Knowledge of temperature can help regulate room temperature for a comfortable environment, ensure that a 3D printer bed is hot enough for materials like ABS to stick to its surface, prevent engine overheating, and keep food from being burnt.
For this article, we are only concerned with one type of sensor that can measure temperature. This sensor is called a thermistor.
