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參數(shù)資料
| 型號： | TSP275SA |
| 廠商： | PanJit International Inc. |
| 英文描述： | SURFACE MOUNT BI-DIRECTIONAL THYRISTOR SURGE PROTECTOR DEVICE |
| 中文描述： | 表面貼裝的雙向晶閘管浪涌保護(hù)器件 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大小： | 109K |
| 代理商： | TSP275SA |
PAGE 2
Ver: June 2001
T
T
Follow these steps to select the proper Thyristor surge protector for your application:
1. Define the operating parameters for the circuit:
Ambient operating temperature range
Maximum telephone line operating current (highest battery and shortest copper loop)
Maximum operating voltage: (Maximum DC bias + peak ringing voltage)
Maximum surge current
System voltage damage threshold
Select device with an off-state voltage rating (V
DRM
) above the maximum operating voltage at the minimum operating temperature.
3. Select surge current ratings (I
PPS
and I
TSM
)
≥
those which the application must withstand.
4. Verify that the minimum holding current of the device at the maximum ambient temperature is above the maximum dc current of the
system.
5. Verify that the maximum breakover voltage of the device is below the system damage threshold.
6. Verify that the circuit's ambient operating temperatures are within the device's operating temperature range.
7. Verify that the device's dimensions fit the application's space considerations.
8. Independently evaluate and test the suitability and performance of the device in the application
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Notes:
1. Thermal accumulation between successive surge tests is
not allowed.
2. The device under test initially must be in thermal
equilibrium with T
J
= 25 °C.
3. Test at 1 cycle, 60 Hz.
4. Surge ratings are non-repetitive because instantaneous
junction temperatures may exceed the maximum rated T
J
.
Nevertheless, devices will survive many surge applications
without degradation. Surge capability will not degrade over
a device's typical operating life.
5. Adjust the surge generator for optimum current-wave
accuracy when both voltage and current wave
specifications cannot be exactly met. The current wave is
more important than the voltage wave for accurate surge
evaluation.
6. The waveform is defined as A/B ms where:
A: (Virtual front time) = 1.25 X Rise time = 1.25 X (T
b
- T
a
)
B (Duration time to 50% level of Ipps) = T
1
- T
0
0%
To
20%
40%
60%
80%
100%
Time
% Ipps
Tb
Ta
T1
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| TSP275SB | 制造商:PANJIT 制造商全稱:Pan Jit International Inc. 功能描述:SURFACE MOUNT BI-DIRECTIONAL THYRISTOR SURGE PROTECTOR DEVICE |
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