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    metal oxide varistor 07D series
      metal oxide varistor 07D series
      metal oxide varistor 07D series metal oxide varistor 07D series metal oxide varistor 07D series metal oxide varistor 07D series metal oxide varistor 07D series

      metal oxide varistor 07D series: Varistor 07D series specification Description: Standard series Varistor chip diameter: 7mm High Joule series Varistor chip diameter: 7mm Electrical specifications: 1……

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  • Functional characteristics
  • metal oxide varistor 07D series:
    Varistor 07D series specification Description:
    Standard series
    Varistor chip diameter: 7mm
    High Joule series
    Varistor chip diameter: 7mm
    Electrical specifications:
    1. Pressure sensitive voltage: 18~820V
    2. Maximum allowable voltage: 10~510V(AC) 14~670V(DC)
    3. Flow capacity (for reference)@1KHz: 45-2800pf

    Varistor 07D series product introduction and the role of surge protector:
    Varistor is a kind of metal oxide semiconductor nonlinear ceramic resistance element with zinc oxide as the main component. According to its voltammetry characteristics, it can be divided into two types: symmetric (non-polar) and asymmetric (polar). Resistance is more sensitive to voltage,
    When the voltage reaches a certain value, the resistance quickly switches on. Because the varistor has good non-line characteristics. Large flow, fast action and no continuous flow, etc., are widely used as surge protectors, lightning surge protectors and electronics
    Voltage equipment lightning protection to prevent such overvoltages from interfering with the normal operation of electronic voltage equipment or damaging various circuit components.

    Varistor product application:
    Products as surge protectors are widely used in various fields of electronic engineering:
    1. Communication,
    2. Electricity,
    3. Home appliances,
    Specific such as: telephone, switch, electricity meter, distribution cabinet, socket box, distribution box, power switch, power surge protection box, power voltage regulator, lightning arrester (SPD surge protection special) and so on.

    Varistor, surge protector principle:
    When at rest, varistors have a high impedance (several megohm) relative to the protected electronic components and do not change the circuit characteristics of the original design
    When a transient surge voltage occurs (exceeding the breakdown voltage of the varistor), the impedance of the varistor becomes low (only a few ohms) and causes a short circuit of the original line.
    In other words, the electronic product or component is also protected.

    Advantages of varistors:
    1. Wide voltage range
    2. Large flow capacity, large energy tolerance
    3. Large nonlinear coefficient
    4. Small leakage current
    5. Symmetrical volt-ampere characteristics
    6. Residual depression
    7. Fast action, small response time
    8. No continuous flow
    9. Good voltage ratio
    10. Strong surge absorption capacity
    11. High efficiency surge current processing capability
    12. Stable execution ability of suppressed voltage characteristics
    13. Excellent material
    14. Work reliably
    15. Long life
    16. Widely used

    Varistor Naming rules:
    metal oxide varistor marking code

    Varistor packing specifications:

    Item Part No. Bulk Reel Ammo
    Bag Box Carton Box Carton Box Carton
    1 07D 8R0M-391K 1000 2000 12000 2000 16000 2000 10000
    2 431K-821K 1500 7500

    Varistor 07D series partial product model summary table:
    N(Standard) Series
    Element Diameter: 07mm

    Item Part No. Max Allowable Voltage Max Clamping Voltage Varistor Voltage Maximum Energe 10/1000µS Withstanding Surge Current 8/20µS Rated Power
    ACrms
    (V)
    DC(V) at 10A at 1mA Standard Standard (W)
    (V) (V) (J)  I(A)
    1 07D821K 510 670 1355 820(738-902) 69.2 1200 0.25
    2 07D781K 485 640 1290 780(702-858) 67.0
    3 07D751K 460 615 1240 750(675-825) 65.0
    4 07D681K 420 560 1120 680(612-748) 40.6
    5 07D621K 385 505 1025 620(558-682) 39.6
    6 07D561K 350 460 920 560(504-616) 38.0
    7 07D511K 320 415 845 510(459-561) 37.0
    8 07D471K 300 385 775 470(423-517) 36.0
    9 07D431K 275 350 710 430(387-473) 33.4
    10 07D391K 250 320 650 390(351-429) 32.0
    11 07D361K 230 300 595 360(324-396) 32.0
    12 07D331K 210 275 550 330(297-363) 31.0
    13 07D301K 190 250 505 300(270-330) 30.0
    14 07D271K 175 225 455 270(243-297) 26.2
    15 07D251K 160 205 415 250(225-275) 24.0
    16 07D241K 150 200 395 240(216-264) 22.0
    17 07D221K 140 180 360 220(198-242) 22.0
    18 07D201K 130 170 330 200(185-225) 20.2
    19 07D181K 115 150 300 180(162-198) 13.2
    20 07D151K 95 125 250 150(135-165) 13.5
    21 07D121K 75.0 100.0 200 120(108-132) 8.8
    22 07D101K 60 85 165 100(90-110) 7.5
    23 07D820K 50 65 135 82(74-90) 6.5
    24 07D680K 40 56 135 68(61-75) 3.9 250 0.02
    25 07D560K 35 45 110 56(50-62) 3.3
    26 07D470K 30 38 93 47(42-52) 3.0
    27 07D390K 25 31 77 39(35-43) 2.3
    28 07D330K 20 26 65 33(30-36) 2.0
    29 07D270K 17 22 53 27(24-30) 1.8
    30 07D220K 14 18 43 22(20-24) 1.3
    31 07D180L 10 14 38 18(15-21) 1.0

    J(High Surge&High Energy) Series
    Element Diameter: 07mm

    Item Part No. Max Allowable Voltage Max Clamping Voltage Varistor Voltage Energe 10/1000µS Withstanding Surge Current 8/20µS Rated Power
    ACrms(V) DC(V) at 10A at 1mA (J) 1 time 2 times (W)
    (V) (V) (A)
    1 07D821K 510 670 1355 820(738-902) 104 1800 864 0.25
    2 07D751K 460 615 1240 750(675-825) 97
    3 07D681K 420 560 1120 680(612-748) 90
    4 07D621K 385 505 1025 620(558-682) 89
    5 07D621K 350 460 920 560(504-616) 84
    6 07D511K 320 415 845 510(459-561) 82
    7 07D471K 300 385 775 470(423-517) 81
    8 07D431K 275 350 710 430(387-473) 73
    9 07D391K 250 320 650 390(351-429) 67
    10 07D361K 230 300 595 360(324-396) 60
    11 07D331K 210 275 550 330(297-363) 54
    12 07D301K 190 250 505 300(270-330) 50
    13 07D271K 175 225 455 270(243-297) 46
    14 07D241K 150 200 395 240(216-264) 40
    15 07D221K 140 180 360 220(198-242) 40
    16 07D201K 130 170 330 200(185-225) 36
    17 07D181K 115 150 300 180(162-198) 26
    18 07D151K 95 125 250 150(135-165) 24
    19 07D121K 75.0 100.0 200 120(108-132) 20
    20 07D101K 60 85 165 100(90-110) 17
    21 07D820K 50 65 135 82(74-90) 14
    22 07D680K 40 56 135 68(61-75) 11 375 180 0.02
    23 07D560K 35 45 110 56(50-62) 9
    24 07D470K 30 38 93 47(42-52) 7
    25 07D390K 25 31 77 39(35-43) 6
    26 07D330K 20 26 65 33(30-36) 5
    27 07D270K 17 22 53 27(24-30) 4
    28 07D220K 14 18 43 22(20-24) 3
    29 07D180L 10 14 38 18(15-21) 3

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