Q:What isNTC thermistor?What are the types?
A:The property of resistance decreasing as temperature rises is called negative temperature characteristic, and a thermistor used to represent negative temperature characteristic is calledNTC thermistor (Negative Temperature Coefficient Thermal sensitivity resistor).
Common types include: single-ended glass-sealed type, bead type small black head, bead type enameled wire, bead type small leather wire, snap-in small black head, insulated film type, diode.,Power typeand chip resistors.
Q:What are the technical parameters of NTC thermistors? Please provide examples.
A:Main technical parameters include: nominal resistance (5K/10K/50K/100K...), resistance tolerance (accuracy)(1%/3%/5%/10%), temperature coefficient of resistance (B value) (3270/3380/3435/3470/3950/4000/4050/4500...) and operating temperature range (°C) (-30°C-105°C/-30°C-125°C/-40°C-250°C)...), material constant, time constant...
Q:What isB value of NTC thermistor?
A:The B value is a material constant (thermistor index) of a temperature coefficient thermistor, with units of Kelvin temperature (K). After high-temperature sintering, semiconductor ceramics undergo a series of processing steps to form an NTC thermistor chip with a certain resistivity. Each formulation and sintering temperature results in only one B value. The B value of an NTC thermistor is positively correlated with the product's temperature coefficient of resistance, meaning that the larger the B value, the larger its temperature coefficient of resistance.
The NTC thermistor B value formula is: B=T1T2Ln(RT1/RT2)/(T2-T1) where B: NTC thermistor B value, provided by the manufacturer; RT1, RT2: resistance values of the thermistor at temperatures T1, T2 respectively; T1, T2: absolute temperature scale.
The B value of NTC thermistors generally ranges from 2000K to 6000K, and different B values can be selected based on different application ranges. For products used in temperature measurement, temperature compensation, and surge suppression, a larger B value can be chosen. This is because as the temperature changes, products with a larger B value exhibit a greater change in resistance. In other words, the larger the B value of an NTC thermistor, the more sensitive and faster the response time when in use.
Q:OrderWhat data is needed for NTC thermistors?
A:If the resistance type is already determined, you need to inform us of the resistance value,B value, accuracy, and the required length of the resistor; if the type is uncertain, temperature, usage scenario, resistance value, B value, accuracy, and the required length of the resistor are needed.
Q:How fast is the response time of NTC thermistors?
A:Response time is defined as reaching62% or the time required for the new temperature, and is a function of mass. The smaller the sensor, the faster the response. Discrete sensors respond faster than the same sensor packaged in a metal housing. The typical response time for MF52 series NTC thermistor sensors is <15 seconds.
Q:What type of temperature sensors does your company offer? What are the types?
A:Our company's temperature sensors are mostly of theNTC type temperature sensors, depending on the usage scenario and structure, are available in straight tube type, threaded type, flange type, bullet type, epoxy resin encapsulated type, lock washer terminal type, ABS plastic shell type, and film type. In addition, our company also has PT100/PT1000 temperature sensors, DS18B20 temperature sensors, thermocouples, and infrared temperature sensors.
Q:Does your company have temperature sensors in stock? Do you support customization?
A:Temperature sensors belong to specific products, and different customers have different needs. Most in-stock products are epoxy resin sealed types, with fewer other types.
Our products support customization. Thermistors that need to be used can be selected from our existing range. Additionally, customizable parts include: length, size, and shape of metal components, model, specification, and length of wires, as well as the selection of different types of connectors.
Q:If the type of temperature sensor to be used is unclear, can you make a recommendation?
A:Of course. Because there are many types of contacts, when the customer is unclear, we will recommend products based on the customer's usage scenario and specific needs, so that the customer can obtain satisfactory products. In addition, we can also cooperate with customers to adjust product designs in a timely manner according to customer requirements, and customize satisfactory products that customers need.
Q:Are you involved in products for the new energy sector?
A:New energy is a hot topic in recent years, and it is a must-have in our products. Not only new energy,We are also involved in products used in 3D printing and other fields, which are quite extensive.
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Q: How to obtain the R-T table for NTC thermistors and temperature sensors?
A: Yes, products will correspond to R-T tables, and data from different manufacturers inherently differs. If you need an R-T table for a specific product, please contact our sales personnel.
Q: Can your company help design products and draw blueprints?
A: Yes, it is possible. Product drawing requires data for each component, including material, dimensions, and other special requirements, as well as special authorization.
