Introduction

"VCR" - Varistor is from 18VDC to 1800VDC and them have been recognized by UL & CSA.
　

Some specific areas in application of VCR Varistor  are:

  • Power Supplies

  • Ground Fault Interrupters

  • Communication Equipments

  • Cable TV Systems

  • Motor Control Systems

  • Microprocessor Protections

  • AC Operated Smoke Detectors

  • Surge Protection in Consumer Electronics

  • Surge Protection in Measuring And Controller Systems

  • Surge Protection in Industrials Electronics

  • Surge Protection in Electronic Home Appliances

  • Protection Against Transients Induced by Lightning on Incoming Power Lines

  • Suppressor of Transients Caused by Switching Inductive Loads - Transformers, Relays, Coils.
　
       VCR Varistor is a polycrystalline ceramic body consisting of semi-conducting zinc-oxide (ZnO) grains and second phase, which including Bi2O3,Sb2O3, MnO, Coo, etc, and located at the joints of the grains. It is called varistor(variable resistor), surge absorber or TVS (transient voltage suppressor) because its electrical resisance varies nonlinearly with the voltage applied to its terminals.
　

主要組成
Materials and Marking
Marking Zinc oxide Varistor
Electrode Materina Ag paste
Coating materia Epoxy
Lead Material Tin Plated Copper Wire

　

尺寸明細
Dimension table
Series D H d F
max max  - -
05D 7 10 0.6 5±0.8
07D 9 12 0.6 5±0.8
14 0.6 5.5±0.8
10D 13 17 0.8 7.5±0.8
19 0.8 8±0.8
14D 17 20 0.8 7.5±0.8
22 0.8 8±0.8 / 10±0.8
20D 23 28 0.8 7.5±0.8
30 1 8±0.8 / 10±0.8
25D 28 33 1 8±0.8
10±0.8 / 12.5±0.8
**Unit (mm)

　
T max. Table
Part No. 05D 07D 10D 14D 20D 25D art No. 05D 07D 10D 14D 20D 25D
180L 3.3 3.5 3.9 4 4.3 - 301K 3.9 4.1 4.3 4.4 4.7 5.9
220K 3.6 3.8 4.2 4.3 4.6 - 331K 4 4.2 4.5 4.6 4.9 6.1
270K 3.8 4 4.4 4.5 4.8 - 361K 4.1 4.3 4.7 4.8 5.1 6.4
330K 3.3 3.5 3.9 4 4.3 - 391K 4.2 4.4 4.8 4.9 5.2 6.6
390K 3.5 3.7 4.1 4.2 4.5 - 431K 4.4 4.6 5 5.1 5.4 6.9
470K 3.7 3.9 4.3 4.4 4.7 - 471K 4.6 4.8 5.2 5.3 5.6 7.2
560K 4 4.2 4.6 4.7 5 - 511K 4.8 5 5.3 5.4 5.7 7.2
680K 4.3 4.5 4.9 5 5.3 - 561K 5 5.2 5.5 5.6 5.9 7.2
820K 3.3 3.5 3.9 4 4.3 - 621K 5.3 5.5 5.7 5.8 6.1 7.7
101K 3.6 3.8 4.2 4.3 4.6 - 681K 5.4 5.6 5.8 5.9 6.2 8
121K 3.8 4 4.4 4.5 4.8 - 751K 5.6 5.8 6 6.1 6.4 8.4
151K 4.1 4.3 4.7 4.8 5.1 - 781K 5.8 6 6.3 6.4 6.7 8.5
181K 3.2 3.4 3.8 3.9 4.2 - 821K - 6.3 6.5 6.6 6.9 8.7
201K 3.3 3.5 3.9 4 4.3 5.4 911K - - 6.6 6.7 7 9.2
221K 3.4 3.6 4 4.1 4.4 5.5 102k - - 7