A newly developed anti LED fault bidirectional thyristor in Japan

Japanese Shindengen industry developed a bidirectional thyristor in LED can prevent the open circuit fault of all lighting tube out of the "K1VZL09/K1VZL20", from the beginning of April 2010 production. The utility model is mainly used for the street lamp, the emergency indicator lamp, the light projector and the signal lamp which can not be completely extinguished. The product name is "SAIDAC"

In a series of LED lighting appliances, when 1 LED open circuit failure, all the LED connected with it will be extinguished. Moreover, due to the impact of the failure of the LED, the voltage is likely to rise, and the destruction of other LED. therefore, the original has been adopted with LED and even zener diode (ZenerDiode) method to solve. However, there is a problem in this method, because of the need to use higher than the LED drive voltage reverse voltage regulator diode, so the voltage regulator for the bypass state of the heat is very large.

In order to solve the above problems and the development of the product is the two-way thyristor. A bidirectional thyristor is a semiconductor device with a voltage that is more than the breakdown voltage. Moreover, the smaller loss of positive bidirectional thyristor, only zener diode 1/5 "(Shindengen industry). Therefore, it can greatly reduce the amount of heat in the bypass state.

The difference between K1VZL09 and K1VZL20 is the breakdown voltage. K1VZL09 series 1~2 standard +10V voltage for the use of LED. K2VZL20 series 3~5 standard +20V voltage for the use of LED. The maximum of the on state current is 1A, the maximum current is 5 A. and the maximum current is 20mA.. The temperature range of the joint is -40~+125. The overall dimensions are 5mm * 2.5mm * 2mm. has now started sample supply. Sample price is 80 yen.