Highly reliable high-voltage diode for automobile igniter

• Main Authors: YUAN DECHENG, YU DONGLIANG, FENG YANING, ZHOU BIN, ZHANG YIYUAN
• Format: Patent
• Language: Chinese; English
• Published: 31.07.2013
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The utility model relates to a highly reliable high-voltage diode for an automobile igniter. The high-voltage diode comprises a plurality of glass passivated diode chips, an electrode lead wire, a polyimide coating and an epoxy resin packaging layer, wherein the glass passivated diode chips are connected in series, and series connection surfaces are welded with connection surfaces of the chips and the electrode lead wire; and the polyimide coating wraps positions from the diode chips to the electrode lead wire; and the polyimide coating is packaged with epoxy resin. According to the high-voltage diode, since the multiple glass passivated diode chips are stacked, an obtained reverse voltage is a withstand pressure over 4,000V; due to the low resistivity of the chips, high reverse surge can completely satisfy demands of the automobile igniter; and at the same time, the polyimide coating serves an inner protection layer, and thus the high-voltage diode has excellent thermal stability, ductility, impact resistanc