Bidirectional Transient Voltage Suppression Diodes for the Protection of High Speed Data Line from Electrostatic Discharge Shocks .
Transient suppressor diode editingTransient voltage suppression diode tube. TVS is a kind of protection device with high performance, when the TVS diode under high transient energy impulse, it can take the microsecond speed to absorb the surge current. The voltage protection of the electrical equipment. The.TVS tube has the advantages of small size. The characteristics of fast response time. In the lightning overvoltage. Anti ESD. Home. Electrical interference. Instrumentation. Communications equipment. Computer security. Widely used for satellite guided devices.
Transient voltage suppression diode is a new product developed in the regulator based on the technology, the circuit symbol and ordinary zener diode, the shape is no different from ordinary diode, when TVS tube ends subjected to high energy impact moment, it can at very high speed (up to 1*10-12 seconds) to the impedance suddenly reduced, while absorbing a large current, the voltage between the ends of the clamp in a predetermined value, so as to ensure that the circuit element behind from transient high energy impact damage,1. Determine the maximum DC or continuous operating voltage of the protected circuit, the rated standard voltage of the circuit and the "high end" tolerance.

2, TVS rated reverse turn off VWM should be greater than or equal to the maximum working voltage of the protected circuit. If the selected VWM is too low, the device may enter the avalanche or the reverse leakage current is too large to affect the normal operation of the circuit. Serial connected voltage, current parallel connection.

3, TVS the maximum clamping voltage should be less than VC protected damage voltage circuit.

4, in the specified pulse duration, the maximum peak pulse power PM of TVS must be greater than the peak pulse power in the protected circuit. The maximum clamping voltage is determined after the peak pulse current should be greater than the transient surge current.

5, for the protection of the data interface circuit, we must also pay attention to select the appropriate capacitor C TVS device.

6, according to the polarity and the use of selected TVS package structure. AC circuit selection of bipolar TVS is reasonable; multi line protection using TVS array is more favorable.

7. Temperature considerations. Transient voltage suppressor can work in 55~+150 c.. If you need to work at a temperature change of TVS, because of the reverse leakage current of ID is increased with the increase of power consumption; with the TVS junction temperature decreases from +25 DEG to +175 DEG, approximately linear decrease 50% rain breakdown voltage VBR with the increase of temperature in a certain coefficient increases. Therefore, you must consult the relevant product information, considering the influence of temperature change on its characteristics.

8, the United States ProTek company provides TVS diodes, following different power selection:

~500W:SA series

~600W:P6KE, SMBJ series

~1500W:1N5629~1N6389, 1.5KE, LC, LCE series

~5000W:5KP series

~15000W:15KAP, 15KP series [1]