Metal Oxide Varistor:TVR Series
Disc Type Varistor for Surge Protection
Reliability
Item
Standard
Test conditions / Methods
Specifications
Gradually apply the specified force and keep the unit fixed for 10±1 sec.
Tensile
Terminal diameter
(mm)
Force
(Kg)
1.0
│△V1mA/V1mA│≦5%
No visible damage
Strength of IEC60068-2-21
Terminals
0.5<d≦0.8
0.8<d≦1.25
2.0
Hold specimen and apply the force specified below to each lead. Bend the
specimen to 90°, then return to the original position. Repeat the procedure
in the opposite direction.
Bending
Strength of IEC 60068-2-21
Terminals
│△V1mA/V1mA│≦5%
No visible damage
Terminal diameter
(mm)
Force
(Kg)
0.5
0.5<d≦0.8
0.8<d≦1.25
1.0
Frequency range: 10-55 Hz
│△V1mA/V1mA│≦5%
No visible damage
Vibration
IEC 61051-1
Amplitude: 0.75mm or 98 m/s2
Direction: 3 mutually perpendicular directions, 2 hrs each
At least 95% of terminal
electrode is covered by new
solder
245±3℃, 3±0.3 sec
Solderability IEC 60068-2-20
Resistance to
260±3℃, 10±1 sec,
(5±0.5 sec for TVR05 )
│△V1mA/V1mA│≦5%
No visible damage
Soldering
Heat
IEC 60068-2-20
High
│△V1mA/V1mA│≦5%
No visible damage
125±5℃ x 1000± 24 hrs
Temperature IEC 60068-2-2
Storage
│△V1mA/V1mA│≦5%
No visible damage
Insulation Resistance
≧100MΩ
Damp Heat,
IEC60068-2-78
Steady State
a. 40±2℃, 90 ~ 95 % RH, 1344 hrs
b. 40±2℃, 90 ~ 95 % RH, at 10%Vdc, 1344 hrs
The conditions shown below shall be repeated 5 cycles
Step
Temperature (℃)
-40±3
Period (minutes)
Rapid
Change of
Temperature
│△V1mA/V1mA│≦5%
No visible damage
1
2
3
4
30±3
5±3
IEC 60068-2-14
Room temperature
85±2
30±3
5±3
Room temperature
Endurance at
Upper
Category
│△V1mA/V1mA│≦10%
No visible damage
85±2℃, 1000±24 hrs at VDC or Vrms (Max. Continuous Voltage)
IEC 61051-1
Temperature
│△V1mA/V1mA│≦10%
No visible damage
8/20μs
Surge Life
8/20μs waveform, 10 surge currents, unipolar, interval 30 secs, amplitude
corresponding to max. surge current derating curves for 20μs.
IEC 61051-1
IEC 61051-1
│△V1mA/V1mA│≦10%
No visible damage
10/1000μs waveform, 10 surge currents, unipolar, interval 2mins,
amplitude corresponding to max. surge current derating curves for 1000μs.
10/1000μs
Surge Life
6KV/3KA 1.2/50μs +8/20μs combination waveform with Vac(@ Deg 90)
for 15 times. Interval time between tests is 60 secs.
(For UL1449 3rd SPD Type 3 application test only)
3KA 8/20μs waveform with Vac (@ Deg 90) for 15 times. Interval time
between tests is 60 secs.
Operating
Duty Cycle
Test
∣△Vp /Vp∣≦10 %
No visible damage
UL 1449 3rd
UL 1449 3rd
Nominal
Discharge
Current Test
∣△Vp /Vp∣≦10 %
No visible damage
(For TVR20R UL1449 3rd SPD Type 2 application test only)
Voltage Proof IEC 61051-1
Varistor
Metal balls method, 2500 Vac 1 min
No visible damage
V1mA @40℃ V
1mA @ 25℃ 100%(% / C)
V1mA @ 25℃ 65
V1mA@85℃ V
1mA@25℃ 100%(% /C)
V1mA@25℃ 60
1
1
Voltage
Temp.
Specification
Standard
-0.05≦TC≦0.05 (%/℃)
,
Coefficient
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice.
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www.thinking.com.tw 2013.03