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Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start

Categories PTC Thermistor
Place of Origin: Dongguan,Guangdong,China
Brand Name: UCHI
Certification: UL,SGS,ROHS
Model Number: PTC Thermistors for Lighting Switching
MOQ: 1000PCS
Price: Negotiable
Packaging Details: Bulk
Delivery Time: 7 working days
Payment Terms: T/T,Paypal,Western Union,Money gram
Supply Ability: 600,000,000PCS Per Month
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    Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start

    Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start


    Quick Details


    • Reliable lamp starting, due to well defined inrush-current generated time delay
    • Accurate resistance for ease of circuit design
    • Small size and durable
    • Available bulk-packed or taped-on-reel
    • Long life: More than 20 000 starts for a 20 W CFL lamp
    • Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC

    Description


    Lighting Switching PTC Thermistor are used when a load in series with the PTC thermistor has to be switched off after a time delay and when switching occurs frequently.
    A typical application of switching PTC thermistor is the preheating of electrode in energy-saving lamps or fluorescent lamps. Switching PTC can also be used as a power resistor for loading a capacitor, for example in power supplies or in control units of production equipment.

    Application

    It's applicable to various types of fluorescent lamp, electronic ballast and electronic energy-saving lamp. The PTC can be connected across the lamp resonator without changing the circuits. It can change hard start of the ballast and electronic energy-saving lamp to preheated start and the preheating time of the filament can come up to 0.4-2 seconds, which will extend the service life of the fluorescent tube by over 4 times.

    Specification


    Switching PTC thermistors Operating Principle

    Lighting Switching PTC thermistor Application Circuit

    The application of the PTC thermistor to achieve preheated start is as follows: Immediately after power is switched on, Rt is in normal temperature state and its resistance is far lower than the C2 resistance. The current through C1 and Rt forms a return circuit to preheat the filament. After about 0.4-2 seconds, Rt joule heat temperature exceeds Curie point Tsc and skips into high resistance state of far higher than C2 resistance. The current passes through C1 and C2 to form a return circuit, which causes L resonance and produces high voltage to light the fluorescent tube.


    PTC thermistors lighting time delay switch off characteristics
    PTC Thermistors Delay operation of relay
    Circuit of PTC Thermistors Delay operation of relay


    Lighting Switching PTC Thermistors Dimensional Drawings

    Lighting Switching PTC thermistors Dimensional DrawingsPart

    Dimension (mm)

    Dmax

    Tmax

    Fd

    F

    MZ31-03 series

    4.5mm

    5.0mm

    0.5mm

    5.0mm

    MZ31-05 series

    6.5mm

    5.0mm

    0.6mm

    5.0mm

    MZ31-07 series

    8.0mm

    5.0mm

    0.6mm

    5.0mm

    PTC Thermistor for Lighting Time Delay and Switching Starting Application Data Sheet

    Part No.

    Switching
    Temperature

    (Centigrade)

    Resistance

    at +25℃

    (ohm)
    R25

    Max. Voltage

    (vAC)

    MZ31-03 series

    MZ31-03M151N500

    80C ± 7 C

    150 ohm ±30%

    500V

    MZ31-03M271N650

    270 ohm ±30%

    650V

    MZ31-03M391N650

    390 ohm ±30%

    650V

    MZ31-03M681N800

    680 ohm ±30%

    800V

    MZ31-03M102N800

    1000 ohm ±30%

    800V

    MZ31-03M152N800

    1500 ohm±30%

    800V

    MZ31-03M332N800

    3300 ohm ±30%

    800V

    MZ31-03N151N420

    100C ± 7C

    150 ohm ±30%

    420V

    MZ31-03N271N500

    270 ohm ±30%

    500V

    MZ31-03N391N650

    390 ohm ±30%

    650V

    MZ31-03N561N650

    560 ohm ±30%

    650V

    MZ31-03N681N650

    680 ohm±30%

    650V

    MZ31-03N102N800

    1000 ohm ±30%

    800V

    MZ31-03N152N800

    1500 ohm±30%

    800V

    MZ31-03P151N420

    110C±7C

    150 ohm ±30%

    420V

    MZ31-03P271N500

    270 ohm ±30%

    500V

    MZ31-03P331N500

    330 ohm ±30%

    500V

    MZ31-03P391N500

    390 ohm ±30%

    500V

    MZ31-03P561N650

    560 ohm ±30%

    650V

    MZ31-03P821N650

    820 ohm ±30%

    650V

    MZ31-03P102N650

    1000 ohm ±30%

    650v

    MZ31-05 series

    MZ31-05M151N650

    80C±7C

    150 ohm ±30%

    650V

    MZ31-05M175N650

    175 ohm ±30%

    650V

    MZ31-05M271N650

    270 ohm ±30%

    650V

    MZ31-05M391N800

    390 ohm ±30%

    800V

    MZ31-05M561N800

    560 ohm ±30%

    800V

    MZ31-05M102N800

    1000 ohm ±30%

    800V

    MZ31-05M222N800

    2200 ohm ±30%

    800V

    MZ31-05N151N650

    100C ± 7C

    150 ohm ± 30%

    650V

    MZ31-05N175N650

    175 ohm ±30%

    650V

    MZ31-05N271N650

    270 ohm ±30%

    650V

    MZ31-05N391N650

    390 ohm ±30%

    650V

    MZ31-05N561N800

    560 ohm ±30%

    800V

    MZ31-05N102N800

    1000 ohm ±30%

    800V

    MZ31-05P151N500

    110C ± 7C

    150 ohm ±30%

    500V

    MZ31-05P175N500

    175 ohm ±30%

    500V

    AMZ31-05P271N650

    270 ohm ±30%

    650V

    MZ31-05P391N650

    390 ohm ±30%

    650V

    MZ31-05P561N800

    560 ohm ±30%

    650V

    MZ31-05P681N800

    680 ohm ±30%

    800V

    MZ31-05P102N800

    1000 ohm ±30%

    800V

    MZ31-07 Series

    MZ31-07M70RN650

    80C ± 7C

    70 ohm ±30%

    650V

    MZ31-07M101N650

    100 ohm±30%

    650V

    MZ31-07M151N650

    150 ohm ±30%

    650V

    MZ31-07M221N800

    220 ohm ±30%

    800V

    MZ31-07M271N800

    270 ohm±30%

    800V

    MZ31-07M391N800

    390 ohm ±30%

    800V

    MZ31-07M681N900

    680 ohm±30%

    900V

    MZ31-07N70RN650

    100C±7C

    70 ohm ±30%

    650V

    MZ31-07N101N650

    100 ohm ±30%

    650V

    MZ31-07N151N650

    150 ohm ±30%

    650V

    MZ31-07N221N800

    220 ohm ±30%

    800V

    MZ31-07N271N800

    270 ohm ±30%

    800V

    MZ31-07N331N800

    330 ohm ±30%

    800V

    MZ31-07N391N800

    390 ohm ±30%

    800V

    MZ31-07N561N900

    560 ohm ±30%

    900V


    Reference information of PTC thermistors for lighting time delay and switching preheated starting applications

    1. The switching time Ts can be approximated as follows:

    Ts=Cth .V.(TRef-TA)/P
    TRef Reference temperature of PTC thermistor
    TA Ambient temperature
    Cth Heat capacity of PTC thermistor
    V PTC thermistor volume
    P Switch-on power of PTC thermistor

    This shows that the switching time can be influenced by the size of the PTC thermistor, its reference temperature and the power supplied. Switching time are lengthened by increasing the volume or the reference temperature, high power consumption by the PTC thermistor, on the other hand, results in short switching time.

    2. Single capacitor starting circuit has higher demand on PTC thermistor voltage withstanding capacity, general required withstanding voltage >800V.

    3. PTC thermistor reliability can be increased through higher resistivity, higher resistivity PTC thermistor shall be chosen first at the premises of satisfying starting characteristics.

    Reference Information for Lighting Watts Corresponding to AMWEI PTC thermistor parts

    1. Below 15W light , AMZ31-03 series.
    2. 15-28W light, AMZ31-05 series.
    3. 28-56W light, AMZ31-07 series.
    4. Around 60W light, AMZ31-08 series.

    In the same dimension and the switching temperature, the lower the light watt, the higher the resistance at 25 centigrade (R25). The higher the R25, the higher the voltage withstanding capacity.


    Competitive Advantage:


    1. Factory supply directly

    2. Completed certificates such as UL,VDE,SGS,etc and high quality available

    3. Quick delivery

    4. Best after-sales services

    5. OEM & ODM available


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