Ring varistors:
• Zinc Oxide (ZnO) Ring Varistor
• Strontium Titanate Ring Varistor
Technical Characteristics:
• Zinc Oxide (ZnO) Ring Varistor
This product is mainly made of Zinc Oxide, with low manufacturing cost, and used in many kinds of common direct-current micro motors with brush.
1） Low voltage dependent resistivity ， E10mA=3 ～ 30V ；
2） High capacitance, （ 1KHz ） C=2 ～ 20nF ；
3） High non-linearity factor, α =2.5 ～ 4.5;
4） Temperature coefficient │ K │≤ 0.5%/ ℃；
5） Good impulse-resistance. Under impact from voltage of 3~5 times E10mA ，△ E10/E10 ≤± 15%;
6） Fine soldering-heat-resistance. When soldered by a soldering iron with a constant temperature of 420 ℃ , the varistor can keep unbroken for 3 seconds ，△ E10/E10 ≤± 10% ；
7） Humidity-resistance: Under condition of temperature 60 ℃± 2 ℃ , humidity 90% ～ 95%RH, after 240 ± 8 hours' humidity-resistance test, the result is △ E10/E10 ≤± 10% ； 8） Excellent acid and alkali eroding-resistance ；
9） Electrode tensile resistance ≥ 1.0kg ；
10） Strong anti-breaking force, ≥ 1.0kg ；
Type |
Standard Voltage Dependent E10 （ V ） |
Static Capacitance 1Khz （ For reference ）（ nf ） |
Static Rated Power Max （ W ）
|
YMZ — ZR3A040 |
4.0 ～ 6.6 |
≤ 30 |
0.5 |
YMZ — ZR3A060 |
6.0 ～ 9.0 |
≤ 30 |
0.5 |
YMZ — ZR3A070 |
7.0 ～ 11.0 |
≤ 30 |
0.5 |
YMZ — ZR3A080 |
8.0 ～ 12.0 |
≤ 30 |
0.5 |
YMZ — ZR3A090 |
9.0 ～ 14.0 |
≤ 30 |
0.5 |
YMZ — ZR3A130 |
13.0 ～ 18.4 |
≤ 30 |
0.5 |
YMZ — ZR3A170 |
17.0 ～ 30.0 |
≤ 30 |
0.5 |
YMZ — ZS3B040 |
4.0 ～ 6.6 |
≤ 20 |
0.3 |
YMZ — ZS3C060 |
6.0 ～ 9.0 |
≤ 20 |
0.3 |
YMZ — ZS3B080 |
8.0 ～ 12.0 |
≤ 20 |
0.3 |
YMZ — ZS3B090 |
9.0 ～ 14.0 |
≤ 20 |
0.3 |
YMZ — ZS3C100 |
10.0 ～ 15.0 |
≤ 20 |
0.3 |
• Strontium Titanate Ring Varistor
This kind of varistor is manufactured as following; first, Strontium Carbonate, Titanium Oxide and other raw materials are synthesized into a compound, then the compound is deoxidizing-sintered.
This product can be used in many kinds of medium or higher direct-current micro motors with brush
1) Low voltage dependent resistivity ， E10mA=2.0 ～ 40V ；
2) High capacitance （ 1KHz ） C=20 ～ 120nF ， with good high-frequency capacitance characterristic ；
3) High non-linearity factor, α =3 ～ 6 ；
4) Nondirectional Volt-ampere characteristic ；
5) Temperature coefficient ，│ K │≤ 0.15%/ ℃；
6) Good impulse-resistance. Under impact from voltage of 3~5 times E10mA ，△ E10/E10 ≤± 15% ；
7) Good soldering-heat-resistance. When soldered by a soldering iron with a constant temperature of 390 ℃ , the varistor can keep unbroken for 3 seconds, △ E10/E10 ≤± 8% ；
8) Humidity-resistance: Under condition of temperature 60 ℃± 2 ℃ , humidity 90% ～ 95%RH, after 240 ± 8 hours' humidity-resistance test, △ E10/E10 ≤± 10% ；
9) Excellent acid and alkali eroding-resistance ；
10） Electrode tensile resistance ≥ 1.0kg ；
11） Strong anti-breaking force, ≥ 1.0kg ；
Type |
Standard Voltage Dependent E10 （ V ） |
Static Capacitance 1Khz （ For reference ） （ nf ） |
Static Rated Power Max （ W ） |
YMZ — SR3A040 |
4.0 ～ 6.6 |
50～110 |
0.5 |
YMZ — SR3A060 |
6.0 ～ 9.0 |
40～90 |
0.5 |
YMZ — SR3A070 |
7.0 ～ 11.0 |
35～80 |
0.5 |
YMZ — SR3A080 |
8.0 ～ 12.0 |
35 ～ 80 |
0.5 |
YMZ — SR3A090 |
9.0 ～ 14.0 |
20～70 |
0.5 |
YMZ — SR3A130 |
13.0 ～ 18.4 |
20～60 |
0.5 |
YMZ — SR3A170 |
17.0 ～ 30.0 |
15～50 |
0.5 |
YMZ — SS3B040 |
4.0 ～ 6.6 |
30～80 |
0.3 |
YMZ — SS3C060 |
6.0 ～ 9.0 |
20～60 |
0.3 |
YMZ — SS3B080 |
8.0 ～ 12.0 |
20～55 |
0.3 |
YMZ — SS3B090 |
9.0 ～ 14.0 |
10～50 |
0.3 |
YMZ — SS3C100 |
10.0 ～ 15.0 |
10～50 |
0.3 |
Environmental Protection Promise:
The Zinc Oxide and Strontium Titanate ring varistor does not contain Lead, Cadmium or any other harmful metal elements. They are both in accordance with the environmental clauses of sony-00259( Revision 4).