A high-voltage esd protection device with a small hysteresis window
A technology for ESD protection and devices, applied in the direction of electric solid devices, semiconductor devices, electrical components, etc., to achieve the effect of enhancing ESD current discharge capability, realizing ESD protection requirements, and large secondary breakdown current
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:
[0027] The present invention proposes a high-voltage ESD protection device with a small hysteresis window. Due to the special design of the internal structure and the reasonable control of key characteristic parameters, the device of the present invention has the ESD protection device with the SCR structure, which has a fast turn-on speed and can be turned on. The advantages of small resistance and large secondary breakdown current; and by reducing the emissivity of the parasitic PNP tube, the maintenance voltage is improved. Also, by introducing the breakdown characteristic of Zener diode, the trigger voltage of the device is reduced, and high-performance ESD protection with a small hysteresis window is realized. It is beneficial to expand the application range of the device of the example of the present invention through the stackin...
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