Thermistor

1. High stably thermistor 2. Frequent switching 3. Energy saving 4. For time delay of lighting and ballast 5. Temp. no drift

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15 years experience on thermistor field.

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RoHS &UL compatible

Features & Application:

• High reliability, good performance of safety and stability, and used in the frequent-switching.

• The withstanding voltage can reach to over 600-1000VAC

• Switching current can pass over 100,000 times, the resitance will not float

• Applied in: energy-saving lamps, fluorescent electronic ballasts, and digital multi-meters.

• The application of the PTC thermistor to achieve preheated start is as follows: Immediately after power is switched on, Rptc is in normal temperature state and it's resistance is far lower than the C2 resistance. The Current through C1and Pptc forms a return circuit to preheat the filament. After about 0.4--2second, Rptc 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. To a certain electronic ballast, energy saving light, higher PTC thermistor resistance, smaller PTC ceramic body dimension, lower switch termperature, will lead to its lower power consumption, and shorter preheating time, conversely, large power consumption, and longer preheating time.

Dimentions:

StraightKinkedK-leadCustom-made

 

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