CA LITTELFUSE | Alldatasheet

Document overview

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Technical content

Features

  • Provided In Disc Form For Unique Packaging By Customer
  • Solderable Electrode Finish Options
  • Pressure Contacts and/or Disc Stacking May be Utilized
  • Standard Disc Sizes 32mm, 40mm, and 60mm Diameter
  • Available Edge Passivation Insulation
  • Wide Operating Voltage Range VM(AC)RMS 250V to 2800V 70,000A
  • No Derating Up to 85 oC Ambient High Energy Industrial Disc

115www.littelfuse.com Varistor Products 2VARISTOR PRODUCTS High Energy Industrial Disc CA Varistor Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous: Steady State Applied Voltage: Transient: Peak Pulse Current (ITM) Single Pulse Energy Range OC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Device Ratings and Specifications CA SERIES UNITS MODEL NUMBER SIZE MAXIMUM RATINGS (85oC) SPECIFICATIONS (25 oC) CONTINUOUS TRANSIENT VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MAX CLAMPING VOLT VC AT 200A CURRENT (8/20µs) TYPICAL CAPACI- TANCEVRMS V DC ENERGY (2ms) PEAK CURRENT (8/20µs) VM(AC) VM(DC) WTM ITM MIN V N(DC) MAX V C f = 1MHz (mm) (V) (V) (J) (A) (V) (V) (V) (V) (pF) V131CA32 32 130 175 200 20000 184 200 228 350 4700 V151CA32 32 150 200 220 20000 212 240 268 410 4000 V251CA32 V251CA40 V251CA60 250 330 330 370 880 20000 40000 50000 354 390 429 680 650 620 2500 5000 10000 V271CA32 V271CA40 V271CA60 275 369 360 400 950 20000 40000 50000 389 430 473 750 730 680 2200 4500 9000 V321CA32 V321CA40 V321CA60 320 420 390 460 1100 20000 40000 50000 462 510 561 850 830 760 1900 3800 7500 V421CA32 V421CA40 V421CA60 420 560 400 600 1500 25000 40000 70000 610 680 748 1200 1130 1060 1500 3000 6000 V481CA32 V481CA40 V481CA60 480 640 450 650 1600 25000 40000 70000 670 750 825 1300 1240 1160 1300 2700 5500 V511CA32 V511CA40 V511CA60 510 675 500 700 1800 25000 40000 70000 735 820 910 1440 1350 1300 1200 2500 5000 V571CA32 V571CA40 V571CA60 575 730 550 770 2100 25000 40000 70000 805 910 1000 1600 1480 1420 1100 2200 4500 V661CA32 V661CA40 V661CA60 660 850 600 900 2300 25000 40000 70000 940 1050 1160 1820 1720 1640 1000 2000 4000

FIGURE 3. CLAMPING VOL TAGE FOR V131CA32 - C751CA32 FIGURE 4. CLAMPING VOL TAGE FOR V131CA40 - V751CA40 FIGURE 5. CLAMPING VOL TAGE FOR V251CA60 - V881CA60 FIGURE 6. CLAMPING VOL TAGE FOR V112CA60 - V282CA60

130 TO 750 VM(AC) RA TING

250 TO 880V

1100 TO 2800V

FIGURE 7. SURGE CURRENT RA TING CURVES FOR FIGURE 8. SURGE CURRENT RA TING CURVES FOR FIGURE 9. SURGE CURRENT RA TING CURVES FOR FIGURE 10. SURGE CURRENT RA TING CURVES FOR FIGURE 11. SURGE CURRENT RA TING CURVES FOR

1 DISC SIZE 60mm

may result in the device not meeting the original published specifications, but does not prevent the device from continuing to function, and to provide ample protection.

119www.littelfuse.com Varistor Products 2VARISTOR PRODUCTS High Energy Industrial Disc CA Varistor Series Series Dimensions 2.0 0.25 DIAMETER (SEE TABLE) PASSIV A TION COLLARELECTRODE THICKNESS ELECTRODE OPTIONAL DISC DIAMETER MODEL SIZE MILLIMETERS INCHES MIN MAX MIN MAX 32 31.0 33.0 1.220 1.299 40 38.0 40.0 1.496 1.575 60 58.0 62.0 2.283 2.441 MODEL VRMS VM(AC) THICKNESS (32mm DISC MODELS) THICKNESS (40mm AND 60mm DISC MODELS) MILLIMETERS INCHES MILLIMETERS INCHES MIN MAX MIN MAX MIN MAX MIN MAX 880 †† ---- 7 . 3 1 0 . 3 0 . 2 8 7 0 . 4 0 6 1100†† ---- 9 . 2 1 3 . 0 0 . 3 6 2 0 . 5 1 2 1400†† ---- 1 1 . 5 1 6 . 0 0 . 4 5 3 0 . 6 3 0 1700†† ---- 1 4 . 0 1 9 . 0 0 . 5 5 1 0 . 7 4 8 2000†† ---- 1 7 . 0 2 2 . 5 0 . 6 6 9 0 . 8 8 6 2400†† ---- 2 0 . 0 2 7 . 0 0 . 7 8 7 1 . 0 6 3 2800†† ---- 2 4 . 0 3 2 . 0 0 . 9 4 5 1 . 2 6 0 † Available in 32mm and 40mm only. †† Available in 60mm size only.

encapsulation or potting material as recommended below. from environmental contamination as required by the application. halogens, sulfides, or alkalines are not recommended. typically used for solder reflow lead attach operations (I-R, Vapour-Phase). sure applied to the disc electrode surface should be 2.2kGs (5 pounds). dependent upon diameter size and is given in the following table. FIGURE 13. TYPICAL BEL T OVEN TEMPERA TURE PROFILE

121www.littelfuse.com Varistor Products 2VARISTOR PRODUCTS High Energy Industrial Disc CA Varistor Series

Ordering Information

The CA Series offers optional electrode finish materials and a glass passivation edge option which must be designated. When ordering, the code letters suffix as shown in the following table must be selected and appended to the standard Model number. NOTES: 1. The 60mm disc types V112CA60 to V282CA60, inclusive, are only supplied with glass passivation and arc-sprayed copper finish electrodes. (That is, with the “PC” option suffix code.) 2. The 32mm size discs are only available with silver metallization. Note also that the CA Series receives no branding on the disc itself. ELECTRODE MATERIAL NON-PASSIVATED DISC PASSIVATED DISC Arc-Sprayed Copper NC PC Sintered Silver NS PS Packaging and Shipping The CA Series is supplied in bulk for shipment. Discs are packaged in compartmentalized cartons to protect from scratching or edge-chipping during shipment. V2 51C A4 0PS VARISTOR DESIGNATOR MAX ACRMS WORKING VOLTAGE (FIRST SIGNIFICANT DIGITS) VM(AC) SILVER ELECTRODE OPTION DESIGNATORDISC SIZE (mm) DIAMETER SERIES DESIGNATOR VM(AC) VOLTAGE DECADE MULTIPLIER PASSIVATION OPTION DESIGNATOR