| 摘要 |
<p>This electrostatic protection element is provided with: a pair of discharge electrodes (15, 16) that are provided on an insulating substrate (12); and a discharge auxiliary electrode (14) that connects the discharge electrodes (15, 16) to each other such that a discharge gap (D) between the discharge electrodes (15, 16) is connected. The discharge auxiliary electrode (14) has a varistor function with zinc oxide as a main component, and is formed by means of thick film printing. The electrostatic protection element is also provided with an insulating dome-forming layer (20) with which a hollow portion (18) is formed such that the discharge gap (D) is covered. The dome-forming layer (20) is formed of glass ceramic, and is covered with a protection layer (22). The electrostatic protection element (10) is capable of stably achieving sufficient electrostatic protection functions, and has low electrostatic capacitance and low discharge start voltage.</p> |
