nichicon，即尼吉康株式会社，俗称蓝宝石电容，1950年创立，总部在日本京都市中京区鸟丸通御池上。

nichicon主要从事电子元件电容器和电路产品的开发，是日本三大电容制造商之一，在全球电容技术领域里，一直雄居世界领先地位。

秉承为客户 “创造有价值的产品”经营理念，凭借半个多世纪在电容领域的深厚造诣，可为全球用户提供一流的电容产品。在提升企业竞争力和顾客满意度的同时，兼顾环保和社会贡献等责任。

Nichicon产品范围主要是电解电容器、包括引线电解电容器、贴片电解电容器、固体钽电解电容器、电气双层电容器.另还有薄膜电容器、正温度系数热敏电阻器等。其产品广泛应用于汽车电子、变频器、数控伺服、通讯设备、数字家电等行业。

面对21世纪的电子工业，在更复杂、更密集、更精细的PCB设计中要求电子元器件拥有更高性能、更高可靠性。Nichicon不断致力于电容器及其材料等前沿技术研发，其电容器品质早己被全球业界所认同。Nichicon品牌已驰誉欧、美、亚太等地区近半个世纪！

Nichicon尼吉康以"顾客的新产品开发之强有力合作伙伴"为目标,以迅速开发顾客所需的高功能产品为宗旨迅速满足市场需求。为此,在 "铝电解电容器"回路产品""电力/机器用电容器"的各领域,构筑了始于素材开发的研究开发体制。生产部门与研究开发部门密切地联系以实现新技术的早期实用化/产品化。

公司名称 尼吉康株式会社
NICHICON CORPORATION
成立时间 1950年8月1日
资本金 14,286百万日元（2007年3月31日现在）
营业额 118,713百万日元（2007年3月期结算）
员工人数 6,334人 （2007年3月31日现在统计）
上市股份 东证第一部、大证第一部、名证第一部
营业项目 
- 电子机器用·机器用·电力用各种电容器
- 机能模块，正温度系数热敏电阻
- 开关电源
- 电容器应用关联机器等

Nichicon Corporation (ニチコン株式会社 Nichikon Kabushiki-gaisha?) is a manufacturer of capacitors of various types and applications and is one of the largest manufacturers of capacitors in the world, headquartered in Karasuma Oike, Nakagyo-ku, Kyoto, Japan. In 1950, it separated from the Nii Works Co., established itself as Kansai-Nii Works and finished its first factory by 1956. In 1961, they adopted the Nichicon name and have been using it, or a variant thereof, ever since.

In the early 2000s, Nichicon was the primary capacitor manufacturer caught in the Capacitor Plague. No overall reason was ever proven for the huge production runs of defective capacitors, but some sources claimed that these capacitors were either overfilled with electrolyte or were constructed using electrolyte fluid that was prone to pop and leak fluid, causing premature failure in any equipment using them. Nichicon received particular infamy because of their use by major computer manufacturers including Dell, Hewlett-Packard, and Apple. In 2010 Dell settled a civil lawsuit for its shipment of at least 11.8 million computers from May 2003 to July 2005 that used faulty Nichicon components and were prone to major failure.

Passive Component Industry magazine reports this quite differently:

Subsequent reports suggest that Rubycon Corporation, Nichicon, and Nippon Industries (NIC Components) have been inundated with orders for low-ESR aluminum capacitors, as more customers shy away from Taiwanese-produced parts. Rubycon, Nichicon, and Nippon Industries (NIC Components) do not have plants in Taiwan, and thus were not exposed to the bad electrolyte in their low-ESR aluminum capacitors.

In 2011 and 2012 Nichicon spun off several major factories into independent subsidiaries and established representative branches in foreign countries thus realigning their corporate infrastructure.