MOV Metal Oxide Varistor 14D681K For Medical / Industrial

Fast Response Time 14D 681k Metal Oxide Varistor High Peak Current Withstand Capability

Four characteristics of MOV varistors:
1. Protection characteristics
When the impulse strength (or impulse current Isp=Usp/Zs) of the impulse source does not exceed the specified value, the clamping voltage of the MOV is not allowed to exceed the impulse withstand voltage of the protected electronic circuit.
2. Shock resistance
That is, the MOV varistor itself bears the rated impact current and impact energy, including an average power when multiple impacts occur in succession.
3. Life characteristics
There are two life characteristics here, one is the life of continuous working voltage, that is, the varistor should be able to work reliably for the set time under the set ambient temperature and system voltage conditions. The second is the impact life, which is the number of times it can withstand the set impact.
4. After the piezoresistor intervenes in the system, in addition to the protective function of the "safety valve", it will also bring about "secondary effects", which should not reduce the working performance of the normal system.
At this time, there are three major factors to consider: one is a capacitance value of the varistor itself (tens to tens of thousands of PF); the other is the leakage current under the system voltage; the third is the non-linear current of the varistor through the source impedance. Coupling effects on other circuits.
Characteristics of varistors
(1) Advantages: the voltage range is very wide, from several volts to several thousand volts, the surge current can be from tens to several thousand amperes, the response speed is fast, there is no polarity, no freewheeling, and the peak current withstand capacity is large. low price.
(2) Disadvantages: The clamping voltage is relatively high, which can generally reach 2 to 3 times the working voltage. In addition, pressure
The leakage current of the varistor increases with the increase of the number of surge impacts. The response time is longer and the parasitic capacitance is larger.
(3) Applicable occasions: DC power lines, low-frequency signal lines, or used in series with gas discharge tubes for AC power lines.

Specifications:

Dongguan Chenglue Electronics Co., Ltd. Number of employees: 152 employees. The company mainly produces and sells: X2 safety capacitors, CBB21/22, metallized film capacitors, Y1/Y2 safety capacitors, varistors. The price is 6%-8% lower than that of peer factories. CBB21/2 capacitors, film suppliers Qingdao Chengwen, Zhongshan Dongli, Quanzhou Jiadeli, all products are sprayed with tin-zinc 4/6 alloy, the products used are stable in operation under high temperature and high pressure conditions of 105 degrees, low loss and long service life.

Conventional products are equipped with 50K-100KPCS safety stock, large-volume conventional capacitors, and the delivery time is 3-5 days for batch delivery. Chenglue factory has a production scale of 20 Dewei winding machines, and the daily production of film capacitors is 300-500KPCS.

Products are widely used in LED power supply, power adapter, switching power supply, home appliance control board, lighting appliances, automotive electronics, chargers, motors, igniters and other electronic products. The product X2/Y safety capacitors have passed the United States (UL), Germany ( VDE), China (CQC), South Korea (KC) and other countries and regions product safety certification, product environmental protection has passed the requirements of ROHS, RECAH, halogen-free and other directives.

Since the establishment of the company, relying on advanced production equipment, continuous improvement of enterprise management mode, scientific and technological talents and well-trained workforce, we have strived to make Chenglue Electronics a supplier of electronic components for internationally renowned brands and well-known manufacturers. The company sincerely develops the market with the concept of "seeking reputation with quality, seeking development with reputation, and creating value for customers", and serves customers with the service concept of "customer needs are our work goals"



Company advantage

Complete testing equipment and production line​



At present, it has passed the in-depth inspection of SGS institutions, ISO9001: 2015 environmental management system, and other quality management system certifications​



To provide customers with professional customized services, according to different requirements of customers to develop, design, produce products that meet various special needs. Professional application engineers, door-to-door assistance in model selection, and free technical support for customers. Provide customers with professional customized services ,According to the different requirements of customers, we develop, design and produce products that meet various special needs. Professional application engineers come to assist in model selection and provide technical support for customers free of charge. Provide customers with professional customized services and develop products according to different requirements of customers. , design, and produce products that meet various special needs. Professional application engineers, on-site assistance in model selection, free technical support for customers, professional customized services for customers, research and development, design, and production that meet various requirements according to different requirements of customers. Professional application engineers for products with special needs, door-to-door assistance in model selection, and free technical support for customers. Provide customers with professional customization services, develop, design, and produce products that meet various special needs according to different requirements of customers. Professional application Engineers, door-to-door assistance in model selection, and free technical support for customers. Provide customers with professional customization services, develop, design, and produce products that meet various special needs according to different requirements of customers. Professional application engineers, door-to-door assistance in model selection, Provide technical support to customers free of charge

Our product range：

X2 Safety Capacitor
Y1 Safety Capacitor
Y2 Safety Capacitor
Metallized Polypropylene Film Capacitor
Super Capacitor
Metallized Polyester Film Capacitor
MMKP82 Capacitor
Aluminum Electrolytic Capacitor
Metal Oxide Varistor
SMD MOV Varistor
NTC Thermal Resistor
NTC Temperature Sensor
Hall Effect Current Sensor
Electric Vehicle Fuse
Gas Discharge Tube