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Address: No.1, Yixiang ,Liwu Industrial Park,Liwuyuan Village,Xihu District, Shilong Town,Dongguan 523325,Guangdong ,China
Contact name:James Lai
Dongguan Ampfort Electronics Co., Ltd. |
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Overcurent Protection MZ4 MZ5 MZ6 MZ8 MZ10 MZ12 MZ20 PTC Thermistor MZ3 150R 120C 600V
Features Of The PTC Thermistor MZ3 150R 120C 600V
* High ageing cofficient
* Superior withstanding voltage oxidation-resistance.
* Delay life and energy-saving is avaiable for electronic light and ballast.
* One of restricting current unite in digital multimeter Ac circuit thermal protection.
APPLICATION ENVIROMENTAL CONDITIONS Of The PTC Thermistor MZ3 150R 120C 600V
* Environmental temperature: -10 ~ +125C
* Relative humidity:93%( 40±2C )
* Vibration frequency:10-55Hz
* Acceleration:98m/s2
APPLICATION CIRCUIT Of The PTC Thermistor MZ3 150R 120C 600V
Dimension Of The PTC Thermistor MZ3 150R 120C 600V (mm)
| Number | Name | Technical Requirements | Leads |
| D | Diameter | 4.5max | □ Axis Formed
□In-Forming
■Straight |
| T | Thickness | 4.5max | |
| L | Lead Length | Min20 | |
| W | Distance between leads | 5.0±0.5 | |
| d | Diameter of lead | 0.5±0.05 |
Coating Of The PTC Thermistor MZ3 150R 120C 600V
| Coating | Material | Color |
□No coating ■Coating | □PF resin ■Silicon
| □Yellow ■Green □Red
|
Electric Performance Of The PTC Thermistor MZ3 150R 120C 600V
Number | Items | Technical Requirements | Test Conditions |
| 3-1 | Resistant for Zero Rated Power | 150Ω | Atmosphere Temperature:25±2℃ Accuracy of the Test:±0.5% |
| 3-2 | Over Voltage Withstanding | 600V ΔR/Rn≤20% no visual damage
| Starting Current:200mA, Starting Voltage:220VAC,hold on for 7s,and then change to high voltage680VAC,for 6s.the is shown as follows: Stay under the conditions of regular temperature and humidity for 4-5 hours, and then check the Rn again. |
| 3-3 | Over Current withstanding
| 500mA ΔR/Rn≤20% no visual damage | Starting Current:500mA,Voltage 220VAC, switch on the circuit for 1 minute after every 5minutes, switch-off, and repeat this operation for 20 times. Put it under the conditions of regular temperature and humidity for 4-5 hours and then check the Rn again |
| 3-5 | Curie Temperature | 50℃ | Check the temperature at 2 times Rn. |
Description Of The PTC Thermistor MZ3 150R 120C 600V
PTCR (Positive Temperature Coefficient of Resistance) is a thermistor with strong positive temperature characteristics. The main component is BaTiO3. BaTiO3 ceramic is a typical ferroelectric material. The room temperature resistivity is greater than 10 12Ω·cm. It is an insulator. After semiconducting doping, a strong PTC effect is shown—the resistivity at room temperature is very low, and with the increase of temperature, a mutation occurs near the Curie point, resulting in several orders of magnitude change. This is because there is a barrier layer caused by the surface state at the grain boundary of the polycrystalline BaTiO3 semiconductor material. At the Curie temperature, the grain boundary is ferroelectric, the dielectric constant is large, the barrier height is low, and the electrons are very ferroelectric. It is easy to pass through the potential barrier, and the corresponding material resistivity is small, but above the Curie temperature, the grain boundary layer undergoes lattice transformation, the ferroelectricity disappears, and the dielectric constant decreases sharply. According to the Curie-Weiss law, so The barrier then rises. With the sharp increase of the height of the potential barrier, it is difficult for electrons to cross the potential barrier, and the resistivity of the corresponding material rises sharply, which is manifested as the PTC effect of the material macroscopically. Due to this characteristic of PTC thermistors, thermistors have been widely used in both industrial electronic equipment and household appliances.
The company's main products are: electronic ballasts for green lighting, ordinary PTCR and intelligent PTCR for soft start of energy-saving lamps; PTCR for overheating and overvoltage protection of various low-power transformers; 485 communication interface overcurrent and overvoltage Protection of PTCR; overload protection of various new electronic equipment.
