Dongguan Uchi Electronics Co.,Ltd.: 5Yrs

Zaozhuang, Shandong, China; Main products: Metal Oxide Varistor, SMD Varistor, Thermally Protected Varistor

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Home > Products > PTC Thermistor > Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start

Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start

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Payment TermsT/T L/C D/P D/A
Delivery Detail7 days

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Product Details

Brand Name	UCHI		Place of Origin	China
Model Number	PTC Thermistors for Lighting Switching

Product Description

Delivery Time:7 working days
Certification:UL,SGS,ROHS

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

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.

Circuit of PTC Thermistors Delay operation of relay

Lighting Switching PTC Thermistors Dimensional Drawings

Part	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

Company Profile

Dongguan Uchi Electronics Co.,Ltd.

Professional Manufacturer Of MOV Uchi was established in 2006 in Dongguan, China. After years of development, Uchi has become a large scale hi-tech enterprise that specializes in

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Dongguan Uchi Electronics Co.,Ltd.: Contact nameMr. James
Chat Now; Phone86-769-86183707; AddressSamsung Industrial Park,Yucai Road, Jinju Village, Dalingshan Town, Dongguan 523820,Guangdong ,China, Zaozhuang, Shandong

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Product Categories

Carbon Film Resistor	CDS Photoconductive Cell	Cement Resistor	Glass Fuses
Metal Film Resistor	Metal Oxide Varistor	NTC Temperature Sensor	NTC Thermistor
PPTC Resettable Fuse	PTC Thermistor	SMD Varistor	Thermally Protected Varistor

Durable Lighting Switching PTC Thermistor / Chip Thermistor For Preheated Start

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