TSP275C 데이터 시트보기 (PDF) - PANJIT INTERNATIONAL

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TSP275C

AXIAL LEAD BI-DIRECTIONAL THYRISTOR SURGE PROTECTOR DEVICE

PANJIT INTERNATIONAL 

TSP058C - TSP320C

SELECTION GUIDE

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 (VDRM) above the maximum operating voltage at the minimum operating temperature.

3. Select surge current ratings (IPPS and ITSM) ≥ 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

MAXIMUM SURGE RATINGS (TJ = 25 ºC UNLESS OTHERWISE NOTED)

Rating

Symbol

Short-Circuit Current Wave 2/10 µs

Open-Circuit Voltage Wave 2/10 µs

Value

500 A

Notes

Non-Repetitive Peak Pulse Current

I PPS

8/20 µs 10/160 µs 5/310 µs 10/560 µs 10/1000 µs

1.2/50 µs 10/160 µs 10/700 µs 10/560 µs 10/1000 µs

350 A

200 A

150 A

125 A

100 A

(1,2,4,5,6)

Non-Repetitive Peak

On-State Surge Current

I TSM

60A

(1,2,3,4)

Notes:

1. Thermal accumulation between successive surge tests is

not allowed.

2. The device under test initially must be in thermal

equilibrium with TJ = 25 °C.

% Ipps

100%

80%

3. Test at 1 cycle, 60 Hz.

4. Surge ratings are non-repetitive because instantaneous

60%

junction temperatures may exceed the maximum rated TJ.

Nevertheless, devices will survive many surge applications

40%

without degradation. Surge capability will not degrade over

a device's typical operating life.

20%

5. Adjust the surge generator for optimum current-wave

accuracy when both voltage and current wave

0%

To Ta

Tb

specifications cannot be exactly met. The current wave is

Time

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 (Tb - Ta)

B (Duration time to 50% level of Ipps) = T1 - T0

Ver: June 2001

T1

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