Suntan Varistor – Dipped Varistor / SMD Varistor

Suntan Technology Company Limited
---All Kinds of Capacitors

Дорогие друзья,

Варистор также известен как резистор, зависимый от напряжения, или VDR. Suntan поддерживает хороший и качественный варистор. Это отличалось слабым обжигом, диффузией серебра, зернистостью, электрическими свойствами.

Стандартная рабочая температура для этого продукта составляет -55 ~ + 125 ° C.
Рабочее напряжение составляет 3,3 В - 68 В
Низкий ток утечки, соответствует требованиям ROHS;
Размеры включают 0402, 0603, 0805, 1206, 1210, 1812, 2220.

Если у вас есть вопросы, отправьте запрос нам на sales@suntan.com.hk

Suntan Metal Oxide Varistor Function---Surge Protection

Suntan Technology Company Limited
----All Kinds of Capacitors
 
Varistors are voltage-controlled resistors. They are common in outlet strips, Uninterruptible Power Supplies (UPS) and on electrical power lines.
 
Other names for varistors include current suppressors, lightning arrestors, surge arrestors and surge suppressors.
 
In the most common type of surge protector, a component called a metal oxide varistor, or MOV, diverts the extra voltage.  an MOV forms a connection between the hot power line and the grounding line.

What is a metal oxide varistor? 
A metal oxide varistor is a voltage-dependent, semiconductor-based, variable resistor.  Electrically, it appears as an open circuit across a power line until its voltage threshold is reached.  When this occurs, the varistor will instantaneously change from a high resistance mode (open circuit) to a low resistance mode (short circuit), thus conducting currents through it. Once the overvoltage event has passed and the voltage returns to below the threshold level of the varistor, it will return to an open circuit again until the next overvoltage event that exceeds its threshold occurs.
 
What is a surge protector?
A surge protector is an electronic device that limits transient overvoltages to a safe level, thus protecting equipment from damage or disruption. A surge protector may also be expressed using the following terms: SPD (Surge Protective Device), TVSS (Transient Voltage Surge Suppressor). An arrestor (used by utility companies and communication companies) is also a surge protector, but is typically employed in a different part of the electrical system than a surge protector.
 
Metal oxide varistors(MOVs) are among the most common devices used to provide surge protection for electrical and electronic circuits.
 
An MOV has three parts: a piece of metal oxide material in the middle, joined to the power and grounding line by two semiconductors.
 
These semiconductors have a variable resistance that is dependent on voltage. When voltage is below a certain level, the electrons in the semiconductors flow in such a way as to create a very high resistance. When the voltage exceeds that level, the electrons behave differently, creating a much lower resistance. When the voltage is correct, an MOV does nothing. When voltage is too high, an MOV can conduct a lot of current to eliminate the extra voltage.
 
As soon as the extra current is diverted into the MOV and to ground, the voltage in the hot line returns to a normal level, so the MOV's resistance shoots up again. In this way, the MOV only diverts the surge current, while allowing the standard current to continue powering whatever machines are connected to the surge protector. Metaphorically speaking, the MOV acts as a pressure-sensitive valve that only opens when there is too much pressure.

For more details please check : http://www.capacitors.hk/Varistor

Suntan Metal Oxide Varistor Introduction---( MOVs or VDRs )

Suntan Technology Company Limited
----All Kinds of Capacitors

Metal Oxide Varistor (MOV) is also known as Varistors that stands for variable resistors. It is a voltage-dependent resistor (also known as VDR) with bidirectional and symmetrical V/I characteristics.

Metal Oxide Varistor Application :
1. Equipment Protection against Line Transient Damage 
2. Protection of Components Switching Inductive Load 
3. Transient Protection of Solid State Circuit   
4. Extend the Life of Relay Contacts
5. LED Driver Surge Protection & LED ESD Protection 
6. Thermally Protected Varistor Application Circuit
7. IC Protection against Electro-Static Discharge (SMD Varistor Application) 
8. Noise Suppression (SMD Varistor Application) 
9. USB Protection (SMD Varistor Application) 
 
Varistors have been proven to be excellent protective devices due to their application flexibility and high reliability. The metal oxide varistor, with its extremely attractive price/performance ratio, is an ideal component for limiting surge voltage and current and for absorbing energy. Overvoltage protection devices like varistors are often referred to in international publications as a TVSS (transient voltage surge suppressors).
 
Metal oxide varistor is the most common type of varistor. We are one of the leading manufacturer of varistor. Our metal oxide varitor contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides (such as small amounts of bismuth, cobalt, manganese) sandwiched between two metal plates (the electrodes). Our products are with high quality which can guarantee your quality life.
 
Suntan MOV product portfolio offers 5, 7, 10, 14 and 20 mm radial leaded varistor devices which protect against overvoltage transients such as lightning, power contact and power induction. The metal oxide varistors offer a choice of varistor voltages from 18 V to 1800 V and Vrms voltages from 11 V to 1100 V. The devices have high current handling, high energy absorption capability and fast response times to protect against transient faults up to rated limits.

Suntan Zinc Oxide Varistor Cross Reference -5mm Series

Suntan Technology Company Limited
----All Kinds of Capacitors
 
Suntan Dipped Varistor ---Zinc Oxide Varistor can cross to HITECH, MAIDA, Littelfuse/Harris, PANASONIC, Epcos(SIOV), Joyin, thinking, FUJI .
 
Suntan offer different size of dipped varistor and the production volumn is keep increasing. We have size code 05D, 07D, 09D, 10D, 14D, 18D and 20D and each is with different voltage, varistor Voltage ranges from 18V to 1800V.

For more details please check : http://www.capacitors.hk/Varistor/TSV.pdf


 
Attached the Zinc oxide Varistor-05D Series cross reference as below for your reference.

Metal Oxide Varistors
Cross Reference Guide
5mm Series
Suntan HITECH MAIDA Littelfuse
Harris
PANASONIC(ZNR) Epcos
(SIOV)
TSV05D180L  05D180K D58ZOV110RA00  V18ZA05 ERZV05D180 S05K11
TSV05D220K  05D220K D58ZOV140RA00  V22ZA05 ERZV05D220 S05K14
TSV05D270K 05D270K D58ZOV170RA00  V27ZA05 ERZV05D270 S05K17
TSV05D330K 05D330K D58ZOV200RA00  V33ZA05 ERZV05D330 S05K20
TSV05D390K  05D390K D58ZOV250RA01  V39ZA05 ERZV05D390 S05K25
TSV05D470K  05D470K D58ZOV300RA01  V47ZA05 ERZV05D470 S05K30
TSV05D560K 05D560K D58ZOV350RA01  V56ZA05 ERZV05D560 S05K35
TSV05D680K  05D680K D58ZOV400RA01  V68ZA05 ERZV05D680 S05K40
TSV05D820K  05D820K D58ZOV500RA01  V82ZA05 ERZV05D820 S05K50
TSV05D101K  05D101K D58ZOV600RA01  V100ZA05 ERZV05D101 S05K60
TSV05D121K  05D121K D58ZOV750RA01  V120ZA05 ERZV05D121 S05K75
TSV05D151K 05D151K D58ZOV950RA01  V150ZA05 ERZV05D151 S05K95
TSV05D181K  05D181K D58ZOV121RA02  V180ZA05 ERZV05D181 S05K115
TSV05D201K 05D201K D58ZOV131RA02  V205ZA05 ERZV05D201 S05K130
TSV05D221K  05D221K D58ZOV141RA02  V220ZA05 ERZV05D221 S05K140
TSV05D241K  05D241K D58ZOV151RA02  V240ZA05 ERZV05D241 S05K150
TSV05D271K 05D271K D58ZOV181RA02  V270ZA05 ERZV05D271 S05K175
TSV05D301K  05D301K D58ZOV191RA02   ERZV05D301  
TSV05D331K  05D331K D58ZOV211RA07  V330ZA05 ERZV05D331  
TSV05D361K  05D361K D58ZOV231RA08  V360ZA05 ERZV05D361 S05K230
TSV05D391K 05D391K D58ZOV251RA08  V390ZA05 ERZV05D391 S05K250
TSV05D431K 05D431K D58ZOV271RA09  V430ZA05 ERZV05D431 S05K275
TSV05D471K  05D471K D58ZOV301RA10  V470ZA05 ERZV05D471 S05K300

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