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{"title":"7 Mm MOV Metal Oxide Varistor , 18V Non Linear Resistors Long Life","imgUrl":"https:\/\/img.chinax.com\/nimg\/0f\/73\/f208eeeb3b83e99632f60baebfac-200x200-1\/7_mm_mov_metal_oxide_varistor_2c_18v_non_linear_resistors_long_life.jpg","attrs":{"Brand Name":"QingZhu","Model Number":"MYG3 7K 420","Certification":"UL,VDE","Place of Origin":"Xian,China"}}
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{"title":"Customized General MOV Metal Oxide Varistor Disc Resistors Small","imgUrl":"https:\/\/img.chinax.com\/nimg\/a8\/48\/a102f54c868d014ee6d39a6ca82a-200x200-1\/customized_general_mov_metal_oxide_varistor_disc_resistors_small.jpg","attrs":{"Brand Name":"QingZhu","Model Number":"MYG3 7K 385","Certification":"UL,VDE","Place of Origin":"Xian,China"}}
MYG3 10K 420 General Metal Oxide Varistors For Surge Protectors
MYG3 10K 420 General Metal Oxide Varistor Power Source Arrester
A Metal Oxide Varistor or MOV is the blue or orange-colored circular component that you can commonly spot on the AC Input side of any Power Supply Circuit. The Metal Oxide Varistor can be considered as another type of variable resistor that can vary its resistance based on the applied voltage across it. When a high current passes through a MOV, its resistance value decreases and acts as a short circuit. Hence MOVs are normally used in parallel with a fuse, to protect circuits from high voltage spikes. In this article, we will learn more about MOV Working and how to use it in your designs to protect your circuits from voltage spikes. We will also learn about the electrical properties of MOV and how to select a MOV according to your design requirements.
Features
Silicone Resin Coating
Low Leakage Current
Bidirectional and Symmetrical V/ Characteristics
Operating Temperature Range: Low Temperature: -40℃, High Temperature: +85℃/+105℃
Application
MOV (a.k.a varistors) is commonly used along with fuse in parallel to the circuit that is to be protected. The below image shows how to use MOV in the electronics circuit.
When the voltage is within the rated limits the resistance of the MOV will be very high and hence all the current flows through the circuit and no current flows through the MOV. But when a voltage spike occurs in the main voltage, it appears directly across the MOV since it is placed in parallel to AC mains. This high voltage will decrease the resistance value of the MOV to a very low value making it appear like a short.
This forces a large current to flow through the MOV which would blow the fuse and disconnect the circuit from the mains voltage. During voltage spikes the faulted high voltage will return to normal values very soon, in those cases, the duration of the current flow will not be high enough to blow the fuse and the circuit returns to normal operation when the voltage becomes normal. But, every time a spike is detected the MOV disconnects the circuit momentarily by shorting itself and damaging itself with high current each time. So if you find a MOV damaged in any power circuit it is possibly because the circuit went through many voltage spikes.
Lead Style
Code
Configuration
A
straight long
B
Outside Crimped short
C
Vertical Crimped
D
straight short
E
Outside Crimped Long
F
Inside Crimped short
Technical Specifications
Series
Part No.
Rated Voltage V0.1mA(V)
Max. Allowable Voltage ACr.m.s(V)
Max. Allowable Voltage DC(V)
Max. Clamping Voltage Vc(V)
Max. Peak Current Ip(A)
Rated Wattage (W)
Energy 10/1000 μs (J)
Energy 2ms (J)
Max. Peak Current 1 time (A)
Max. Peak Current 2 time (A)
Capacitance 1kHz (pF)
MYG3
10K420+△□
680(612~748)
420
560
1120
63.0
0.4
11.2
8.0
2500
1250
190
Note: +=UL 1449 File E321175(S)--Surge Protective Device, □=UL 1449 File E181155(N)--Across-The-Line Application, △=C--UL for CSA C22.2 File E321175(S) Dimension in mm
Dimensions
Series
Part No.
Dmax
H
A
Wmax
MYG3
10K420
7.5
-
-
-
Company Overview
Xian Xiwuer Electronic & Info. Co., Ltd. is located in Beiguan, Xi'an city covering an area of 4000 ㎡, with employees of 2300, and about 580 technicians, among them, there are 135 engineers, 21 senior engineers. The company has total assets of 315 million RMB Yuan, fixed assets of 137 million RMB Yuan, which is a large enterprise mainly engaged in producing electronic components. The company has the largest production scale of Varistor, SPD (Surge Protective Device) and HV Ceramic Capacitor in China, with the following main products:
Varistors & SPD
HV Ceramic Capacitor
Capacitive Voltage Divider
Thermistor
The main production line and inspection equipment & instrument are imported from Japan, America, Belgium and Switzerland etc. The annual production capacity of the two leading products has been reached to 5 million pcs and 150 million pcs respectively, with the market holding rate in China of about 10% and 30% respectively by continually technical innovation. Varistors and SPD produced by the company enjoyed great reputation in the international market, being exported to many countries and areas such as Japan, USA, Hong Kong etc.
The company has obtained CCEE, UL, VDE & TUV approvals and maintains ISO9001 and ISO18000 certifications, ensuring excellent quality assurance capacity, technical development capacity and rich manufacturing experiences.
Certificates
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Importer,Exporter,Seller
Year Established:
1976
Total Annual:
240M-270M
Employee Number:
390~450
Ecer Certification：
Verified Supplier
Xian Xiwuer Electronic & Info. Co., Ltd. is a wholly state-owned company with a registered capital of 91.46 million RMB Yuan, owning a total assets of 315 million RMBYuan, under the jurisdiction of Xi'an State-owned Assets Supervision & Management Committee. There are about 400 employees... Xian Xiwuer Electronic & Info. Co., Ltd. is a wholly state-owned company with a registered capital of 91.46 million RMB Yuan, owning a total assets of 315 million RMBYuan, under the jurisdiction of Xi'an State-owned Assets Supervision & Management Committee. There are about 400 employees...
