Look like the following figure, a bit like capacitance: on the problem, a bit like PTC thermistor, it is recommended to use a multimeter measurement, reheating measurement, to see whether the resistance value will change.
Blue film chip is only a chip packaged with blue film (chip size is very small, see the figure below), the chip belongs to NTC thermal chip, the use of blue film packaging of this kind of small size NTC thermistor chip, suitable for the Bunding process, so that customers improve production efficiency and reduce costs.
The blue film package is used because this type of NTC thermistor chip (see the figure below) is particularly small in size and can be applied to the Bunding process, with the benefit of both improving productivity and reducing costs.
This is a 10Ω, chip is a negative temperature coefficient of 11mm thermistor. Thermistors are a class of sensitive components, which are divided into positive temperature coefficient thermistors (PTC) and negative temperature coefficient thermistors (NTC) according to different temperature coefficients. The typical characteristic of thermistors is that they are sensitive to temperature and show different resistance values at different temperatures.
2, the core component of the infrared thermopile is the NTC chip, which is small in size, high sensitivity, high precision and high reliability, helping the infrared thermopile to obtain more accurate measurement data in temperature monitoring. The smallest size of the NTC thermistor chip can be 0.3mm, so it can be packaged into various types of head sizesDegree sensor.
3, the thermistor 10D-13 in 13 is the finger chip size is 13MM. The thermistor will remain inactive for a long time; When the ambient temperature and current are in the c zone, the heat dissipation power of the thermistor is close to the heat generating power, so it may or may not operate.
4, NTC5D-13 is a kind of surge current suppression thermistor, 5 indicates that its nominal value at 25℃ is 5 ohms, D-13 indicates that the product diameter is 13mm (chip diameter is D). Its B value is below 3000K, and it can withstand the steady state of 4A for a long timeElectricity.
1, the B value is the thermal constant of the negative temperature coefficient thermistor, that is, the thermistor chip (a semiconductor ceramic) after high temperature sintering, forming a material with a certain resistivity, each formula and sintering temperature only one B value. B value is defined as: B=T1*T2/ (t2-T1) ln (RT1/RT2) RT1: Zero power resistance at temperature T1 (K).
2, negative temperature coefficient thermistor called NTC thermistor resistance value changes with the temperature, the B value is the negative temperature coefficient thermistor thermal index: it is defined as the difference between the natural logarithm of zero power resistance value at two temperatures and the difference between two temperature reciprocal B value: generally B value is (25/50) or (25/85) these two values are commonly used.
3, the B value is a parameter that indicates the sensitivity of NTC resistance to temperature. The larger the B value is, the faster the NTC resistance decreases with the increase of temperature. The value of B can be calculated using the following formula: B=T1*T2/ (T2-T1) *ln (RT1/RT2) Where: RT1: zero power resistance at temperature T1 (K). RT2: Zero power resistance at temperature T2 (K). T1, T2: Two specified temperatures (K).