Brief introduction: Ptc thermistor for time delay of lighting&ballast, which are applicable to various types of fluorescent lamp, electronic ballast, electronic energy-saving lamp and digital multi-meters.It can change hard stard of the ballast and electronic energy-saving lamp to pre-heated stard and preheating time of the filament can come up to 0.4-2.0 seconds, which can greatly prolong service life of the fluorescent tube by over 4 times. Product application: 1. Various types of fluorescent lamp 2. Electronic ballast 3. Electronic energy-saving lamp Advantages: 1. Used in the frequent-switching, typical switching life can pass over 100, 000 times 2. High reliability, good performance of safety and stability 3. Wide operating temperature range -25 ~ +125 celsius degree(when v=0v) 0~ +60 celsius degree(when v=vmax) 4. The withstanding voltage can reach to over 420-1000vac 5. The resistance will not drift in normal temperature. 6. Small dimension 7. Complete specifications 8. Stable delayed time Remarks: many specifications for choice, and samples&orders can be custom made per customers' requirement. Bulk or carton package