varistor,surge protector-在线欧洲杯买球

brief introduction of varistor,surge protector:

varistor is nonlinear resistor mainly composed of zinc oxide as the main material of metal oxide semiconductor components,and they can be divided 

into symmetric (non-polarity) and asymmetric (with polarity) according to the voltage-ampere characteristic.the nonlinear resistors are more sensitive 

to voltage, when voltage reached one set value, resistance conducts rapidly.due to characteristics of high effective nonlinear coefficient,

large through-flow capacity,fast action and no continued flow,they are mainly used for lightning surge protection and surge protector of electronic equipments,

which could absorb various operating surge & lightning wave voltage that can prevent such voltage interfering with the normal operation or damaging the 

various circuit elements.

product application of varistor,surge protector:

widely applied in surge protection of different electronic engineering areas:

1.surge protection for telecommunications,

2.surge protection for electricity,

3.surge protection for home appliances, 

example: telephones,converter,power meter, power distribution cabinets, socket box, distribution box, power switch, power lightning protection box, 

voltage regulator, lightning arrester (spd surge protection special).

working principle of varistor,surge protector:

when varistor in a rest state, relative to the protected electronic components, has a very high impedance (number megohm) without changing circuit 

characteristics of the original design.when achieve the momentary surge voltage (more than breakdown voltage of the varistor), the varistor impedance 

will be low (only a few ohms.) and caused the original short circuit.in other words, electronic products or components are thus protected.

advantages of varistor,surge protector:

1.wide voltage range,

2.large capacitance and energy tolerance,

3.high effective nonlinear coefficient,

4.little leakage current,

5.symmetrical volt-ampere characteristic, 

6.low residual voltage,

7.fast action,

8.no continued flow,

9.excellent voltage ratio, 

10.strong surge protection ability,

11.high surge suppression capability,

12.stable voltage inhibition execution ability,

13.excellent material,

14.reliable operation,

15.long service life,

16.wide application.

marking of part number: 

specification&part no. of varistor,surge protector:

metal oxide varistor 05d series

n(standard) series

diameter:5mm

j(high surge&high energy) series

varistor element diameter:5mm

specifications 

1. varistor voltage: 18~750v  

2. max. allowable voltage: 11~460v(ac) 14~615v(dc) 

3. capacitance(reference)@1khz:30-1400pf

metal oxide varistor 07d series

n(standard) series

varistor element diameter:7mm

j(high surge&high energy) series

varistor element diameter:7mm

specifications 

1. varistor voltage: 18~820v 

2. max. allowable voltage: 10~510v(ac) 14~670v(dc) 

3. capacitance(reference)@1khz:45-2800pf

metal oxide varistor 10d series

n(standard) series

varistor element diameter:10mm

j(high surge&high energy) series

varistor element diameter:10mm

specifications 

1. varistor voltage: 18~1100v 

2. max. allowable voltage: 10~680v(ac) 14~895v(dc) 

3. capacitance(reference)@1khz:45-2800pf

metal oxide varistor 14d series

n(standard) series

varistor element diameter:14mm

j(high surge&high energy) series

varistor element diameter:14mm

specifications 

1. varistor voltage: 18~1800v 

2. max. allowable voltage: 10~1000v(ac) 14~1465v(dc) 

3. capacitance(reference)@1khz:130-11100pf

metal oxide varistor 18d series

n(standard) series

varistor element diameter:18mm

j(high surge&high energy) series

diameter:18mm

specifications 

1. varistor voltage: 18~1100v 

2. max. allowable voltage: 10~680v(ac) 14~895v(dc) 

3. capacitance(reference)@1khz:290-23000pf

metal oxide varistor 20d series

n(standard) series

varistor element diameter:20mm

j(high surge&high energy) series

varistor element diameter:20mm

specifications 

1. varistor voltage: 18~1800v 

2. max. allowable voltage: 10~1000v(ac) 14~1465v(dc) 

3. capacitance(reference)@1khz:320-28500pf

metal oxide varistor 25d series

n(standard) series

varistor element diameter:25mm

j(high surge&high energy) series

diameter:25mm

specifications 

1. varistor voltage: 18~1600v 

2. max. allowable voltage: 10~1000v(ac) 14~1280v(dc) 

3. capacitance(reference)@1khz:450-45000pf

metal oxide varistor 32d series

n(standard) series

varistor element diameter:32mm

j(high surge&high energy) series

varistor element diameter:32mm

specifications 

1. varistor voltage: 33~1600v 

2. max. allowable voltage: 20~1000v(ac) 26~1280v(dc)

3. capacitance(reference)@1khz:700-6200pf

metal oxide varistor 40d series

j(high surge&high energy) series

varistor element diameter:40mm

specifications 

1. varistor voltage: 200~1600v 

2. max. allowable voltage: 130~1000v(ac) 170~1280v(dc) 

3. capacitance(reference)@1khz:1150-8400pf

metal oxide varistor 53d series

j(high surge&high energy) series

varistor element diameter:53mm

specifications 

1. varistor voltage: 200~1600v 

2. max. allowable voltage: 130~1000v(ac) 170~1280v(dc) 

3. capacitance(reference)@1khz:1900-15000pf

metal oxide varistor 34s series

j(high surge&high energy) series

34x34 square plate

specifications 

1. varistor voltage: 200~1600v 

2. max. allowable voltage: 130~1000v(ac) 170~1280v(dc) 

3. capacitance(reference)@1khz:1100-8000pf

packing specification: