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    metal oxide varistor 25D series
      metal oxide varistor 25D series
      metal oxide varistor 25D series metal oxide varistor 25D series metal oxide varistor 25D series metal oxide varistor 25D series metal oxide varistor 25D series

      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: 10~10……

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  • Functional characteristics
  • 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

    Varistor product introduction:
    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.

    application of varistor:
    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.

    metal oxide varistor working 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 25D All 125 250 1500

    Varistor 25D series part of the product model summary table:
    N(Standard) Series
    Element Disc Diameter:25mm

    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) VC IP at 1mA (J) (A) (W)
    (V) (A) (V)
    1 25D162K 1000 1280 2640 150 1600(1400-1760) 805.0 18000 1.20
    2 25D142K 880 1140 2310 1200(1200-1540) 697.0
    3 25D122K 750 990 1980 1200(1080-1320) 631.0
    4 25D112K 680 895 1815 1100(990-1210) 620.0
    5 25D102K 625 825 1650 1000(900-1100) 565.0
    6 25D911K 550 745 1500 910(819-1001) 510.0
    7 25D821K 510 670 1355 820(738-902) 460.0
    8 25D781K 485 640 1290 780(702-858) 440.0
    9 25D751K 460 615 1240 750(675-825) 420.0
    10 25D681K 420 560 1120 680(612-748) 380.0
    11 25D621K 385 505 1025 620(558-682) 380.0
    12 25D561K 350 460 920 560(504-616) 380.0
    13 25D511K 320 415 845 510(459-561) 382.0
    14 25D471K 300 385 775 470(423-517) 350.0
    15 25D431K 275 350 710 430(387-473) 305.0
    16 25D391K 250 320 650 390(351-429) 275.0
    17 25D361K 230 300 595 360(324-396) 255.0
    18 25D331K 210 275 550 330(297-363) 228.0
    19 25D301K 190 250 505 300(270-330) 210.0
    20 25D271K 175 225 455 270(243-297) 190.0
    21 25D241K 150 200 395 240(216-264) 168.0
    22 25D221K 140 180 360 220(198-242) 155.0
    23 25D201K 130 170 330 200(185-225) 140.0
    24 25D181K 115 150 300 180(162-198) 130.0
    25 25D151K 90 125 250 150(135-165) 106.0
    26 25D121K 75 100 200 120(108-132) 85.0
    27 25D101K 60 85 165 100(90-110) 70.0
    28 25D820K 50 65 135 82(74-90) 56.0
    29 25D680K 40 56 135 30 68(61-75) 49.0 4500 0.25
    30 25D560K 35 45 110 65(50-62) 41.0
    31 25D470K 30 38 93 47(42-52) 34.0
    32 25D390K 25 31 77 39(35-43) 28.0
    33 25D330K 20 26 65 33(30-36) 24.0
    34 25D270K 17 22 53 27(24-30) 19.0
    35 25D220K 14 18 43 22(20-24) 16.0
    36 25D180L 10 14 38 18(15-21) 13.0

    J(High Surge&High Energy) Series
    Element Disc Diameter:25mm

    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) VC IP at 1mA (J) (A) (W)
    (V) (A) (V)
    1 25D162K 1000 1280 2640 150 1600(1400-1760) 970.0 15000 1.20
    2 25D142K 880 1140 2310 1200(1200-1540) 850.0
    3 25D122K 750 990 1980 1200(1080-1320) 770.0
    4 25D112K 680 895 1815 1100(990-1210) 770.0
    5 25D102K 625 825 1650 1000(900-1100) 685.0
    6 25D911K 550 745 1500 910(819-1001) 620.0
    7 25D821K 510 670 1355 820(738-902) 570.0
    8 25D781K 485 640 1290 780(702-858) 530.0
    9 25D751K 460 615 1240 750(675-825) 510.0
    10 25D681K 420 560 1120 680(612-748) 460.0
    11 25D621K 385 505 1025 620(558-682) 450.0
    12 25D561K 350 460 920 560(504-616) 440.0
    13 25D511K 320 415 845 510(459-561) 420.0
    14 25D471K 300 385 775 470(423-517) 400.0
    15 25D431K 275 350 710 430(387-473) 380.0
    16 25D391K 250 320 650 390(351-429) 360.0
    17 25D361K 230 300 595 360(324-396) 330.0
    18 25D331K 210 275 550 330(297-363) 300.0
    19 25D301K 190 250 505 300(270-330) 275.0
    20 25D271K 175 225 455 270(243-297) 255.0
    21 25D241K 150 200 395 240(216-264) 220.0
    22 25D221K 140 180 360 220(198-242) 200.0
    23 25D201K 130 170 330 200(185-225) 190.0
    24 25D181K 115 150 300 180(162-198) 175.0
    25 25D151K 90 125 250 150(135-165) 160.0
    26 25D121K 75 100 200 120(108-132) 120.0
    27 25D101K 60 85 165 100(90-110) 100.0
    28 25D820K 50 65 135 82(74-90) 80.0
    29 25D680K 40 56 135 30 68(61-75) 70.0 3000 0.25
    30 25D560K 35 45 110 65(50-62) 60.0
    31 25D470K 30 38 93 47(42-52) 50.0
    32 25D390K 25 31 77 39(35-43) 40.0
    33 25D330K 20 26 65 33(30-36) 35.0
    34 25D270K 17 22 53 27(24-30) 30.0
    35 25D220K 14 18 43 22(20-24) 25.0
    36 25D180L 10 14 38 18(15-21) 20.0

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