Guangdong South HongMing (HK) Electronic Science & Technology Co Ltd

Varistor

Varistor is a sort of sensitive component which resistance value can vary with the applied voltage, it is widely used in the instantaneous overvoltage protection and surge absorption of Electronic-electrical equipment.

    Features:    
- Great range of varistor voltage:  18V to 1.8KV 
- Fast response to transient voltage (ns)
- High great withstanding surge current
- Excellent non-linearity voltage
- Symmetric V-I characteristics
- No following-on current
- Long life

    Range of application:    
- Used in surge protection for IC, transistor, diode semiconductor switch circuit.
- Used in communication, telemetering, electrical control and various electronic equipment.
- Suppress the instantaneous overvoltage caused by electromagnetic valve and relay.
-&nbsp;Supprss the instantaneous overvoltage caused by power supply.
- Suppress the instantaneous overvoltage caused by electronic circuits
- Lightning protection for various kind of electronic appliances.

    Technical conditions:&nbsp;    
- Carry our standard of GB/T10193, GB/T10194, GB/T10195-1997 and SJ/T10348-10349.
- Measurement conditions For varistors of 05D, 07D, 10D, 14D, 20D Series, voltage across the varistor measured under 1 m A DC.
- Varistor voltage: The voltage between two terminals with the specified measuring current applied is expressed by letter V.
- Maximum continuous operating voltage: The maximum sinusoidal RMS voltage or maximum Dc voltage that can be applied continuously in the specified environmental temperature range.
- Working ambient temperature: -40C ~ +85C&nbsp;
- Storage temperature range: -40C ~ +125C

Varistor is a sort of sensitive component which resistance value can vary with the applied voltage, it is widely used in the instantaneous overvoltage protection and surge absorption of Electronic-electrical equipment. 
 
Features: 
- Great range of varistor voltage: 18V to 1.8KV 
- Fast response to transient voltage (ns) 
- High great withstanding surge current 
- Excellent non-linearity voltage 
- Symmetric V-I characteristics 
- No following-on current 
- Long life 
 
Range of application: 
- Used in surge protection for IC, transistor, diode semiconductor switch circuit. 
- Used in communication, telemetering, electrical control and various electronic equipment. 
- Suppress the instantaneous overvoltage caused by electromagnetic valve and relay. 
-&nbsp;Supprss the instantaneous overvoltage caused by power supply. 
- Suppress the instantaneous overvoltage caused by electronic circuits 
- Lightning protection for various kind of electronic appliances. 
 
Technical conditions:&nbsp; 
- Carry our standard of GB/T10193, GB/T10194, GB/T10195-1997 and SJ/T10348-10349. 
- Measurement conditions For varistors of 05D, 07D, 10D, 14D, 20D Series, voltage across the varistor measured under 1mA DC. 
- Varistor voltage: The voltage between two terminals with the specified measuring current applied is expressed by letter V. 
- Maximum continuous operating voltage: The maximum sinusoidal RMS voltage or maximum Dc voltage that can be applied continuously in the specified environmental temperature range. 
- Working ambient temperature: -40C ~ +85C&nbsp; 
- Storage temperature range: -40C ~ +125C

  Operating since 1988  
 South Hongming,  founded in 1988, manufactures various products including full range of ceramic and safety capacitors, film capacitors, monolithic ceramic capacitors, varistors, PTC/NTC thermistors, buzzers and other high-end electronic devices. These are widely applied in all kinds of electronic circuits and electronic products, including high- and low-voltage power supplies, communications equipment, energy and power facilities, computer and peripheral products, TC, DVD, audio-visual devices, microwave ovens, air conditioners, medical equipment, lighting, and other consumer electronic products.

 With Over 600 Sets of Advanced Production Equipment 
There are over 600 sets of advanced production equipment, analysis and testing instruments in our company. Thus, our overall annual production capacity of various components is more than 3 billion pieces. Our factory is located in Wangniudun Newton Industrial Park, Dongguan City, mainland China, which is recognized as a state New and Hi-tech Enterprise, Provincial Technology Innovative Enterprise, Advanced foreign-invested Technology Enterprise, Patent Experimental Enterprise and Dongguan Key-equipment Manufacturing Enterprise.

 With Automatic Production Facilities 
Moreover, we are one of the largest and most competitive manufacturers with automatic production facilities for capacitors, varistors/thermistors and piezoelectric acoustic devices in mainland China. Thus, our company has obtained DNV ISO 9001, China CEPREI GB/T1 9001:2000 Quality System Certifications, ISO 14001:2004 Environmental Management System Certification and Chinese Military Products Quality System Certification. All products also meet and accord to the national standard GB, US EIA and the International Electrotechnical Commission IEC standards. Our safety ceramic capacitors have got the safety quality certifications of American UL, German VDE, Canada CSA, China CQC, Switzerland SEV, Sweden SEMKO, Norway NEMKO, Denmark DEMKO, Finland FIMKO and South Korea KETI.

 Exporting to North and South America, Europe and Other Countries 
Our company got the import and export rights. So, our products are mainly exported to North and South America, Europe, Southeast Asia, Japan, South Korea, India and other major domestic enterprises. Some of our business partners are LG, Thomson, Samsung, VTECH, FRIWO (Germany), Chamberlain (the US), Tower (the US), Tandy (the US), Aztech, SMT, Power STFE (Flextronixs), Poly-products, PI, GRE, Astec, Simatelex, as well as TCL, WeiGuan, Konka, Skyworth, Changhong, China Manned Space Research Institutes and others in China.

  Contact us now.  

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Guangdong South HongMing (HK) Electronic Science & Technology Co Ltd

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