Metal Oxide Varistor:
::
:TVR Series
Disc Type Varistor for Surge Protection
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
27
www.thinking.com.tw
2011.02
All specifications are subject to change without notice.
Reliability
Item Standard Test conditions / Methods Specifications
Tensile
Strength of
Terminals
IEC60068-2-21
Gradually applying the force specified and keeping the unit fixed for 10±1
sec.
Terminal diameter
Force
(Kg)
0.5<d≦
1.0
0.8<d≦
2.0
1.25<d
4.0
No visible damage
│△V/V
1mA
│≦5%
Bending
Strength of
Terminals
IEC 60068-2-21
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.
Terminal diameter Force
(mm) (Kg)
0.5<d≦
0.5
0.8<d≦1.25 1.0
1.25<d 2.0
No visible damage
│△V/V
1mA
│≦5%
Vibration IEC 61051-1 Frequency range: 10-55 Hz
Amplitude: 0.75mm or 98 m/s
2
Direction: 3 mutually perpendicular directions, 2hrs each
│△V/V
1mA
│≦
No visible damage
Solderability
IEC 60068-2-20
245±3℃, 3±0.3 sec At least 95% of terminal
electrode is covered by new
solder
Resistance to
Soldering
Heat IEC 60068-2-20
260±3℃, 10±1 sec,
(5±0.5sec for TVR05 )
∣△V/V
1mA
∣≦ ± 5 %
No visible damage
High
Temperature
Storage IEC 60068-2-2
125±5℃ x 1000± 24 hrs ∣△V/V
1mA
∣≦ 5 %
No visible damage
Damp Heat,
Steady State
IEC 60068-2-3
a. 40±2 , 90 ~ 95 % RH℃, 1344HRS
b. 40±2℃, 90 ~ 95 % RH, at 10%Vdc, 1344 hrs
No visible damage
∣△V/V
1mA
∣≦ 5%
Insulation Resistance≧100MΩ
Rapid
Change of
Temperature
IEC 60068-2-14
The conditions shown below shall be repeated 5 cycles
Step Temperature (℃) Period (minutes)
1 -40±3 30±3
2 Room temperature 5±3
3 85±2 30±3
4 Room temperature 5±3
No visible damage
∣△V/V
1mA
∣≦ 5 %
Endurance at
Upper
Category
Temperature
IEC61051-4.20
85 ± 2 ℃, 1000 ± 24 hrs, at Vdc or Vrms (Max. Operating Voltage) ∣△V/V
1mA
∣≦ 10 %
No visible damage
Low
Temperature
Storage
(Optional)
CECC42000 –40±5℃, 1000±24 hrs ∣△V/V
1mA
∣≦ 5%
No visible damage
8/20µs
Surge Life CECC42000 10,000 pulses( 8/20µS), unipolar, interval 10 sec, amplitude corr. to max.
surge current derating curves for 20µs ∣△V
1mA
/V
1mA
∣≦10 %
No visible damage
10/1000µs
Surge Life CECC42000 10/1000µS waveform, 10 surge currents, unipolar, interval 2mins, amplitude
corr. to max. surge current derating curves for 1000µS
∣
△V
1mA
/V
1mA
∣≦10 %
No visible damage