Zetex专门设计和制造适合不同应用的高性能分立及仿真半导体解决方案，涵盖功率管理、发光二极管(LED)驱动器、高性能数码音频解决方案及卫星广播控制电路等不同领域。公司业务遍布全球，在英国、欧洲及中国均设有制造厂，致力为美国、欧洲及亚洲客户提供增值的分立及仿真标准产品和专用产品。

Zetex产品包括稳压电路、DC-DC变换、电压参考、音频放大器、GaAsFET控制器、低饱合双极型晶体管、低导通电阻MOSFET、可变电容调谐器、肖特基二极管、磁-电传感器等。

Zetex产品应用于蜂窝电话、便携式及桌面电脑、PDAS、汽车、舞台灯光、相机、卫星电视、工艺自动化、视频/多媒体系统。目前产品型号达2500多种，采用的工艺包括双极型、CMOS、HDMOS和沟道MOSFET晶片工艺。Zetex plc公司位于英国Oldham，拥有设计中心、晶片工厂、组装检测工厂，此外，在德国有一个组装封装工厂，中国成都有负责芯片组装、测试的合资企业。部分生产则交由亚洲的一些转包商完成。

2008年7月，Diodes Incorporated 宣布完成了对 Zetex plc（捷特科）的现金收购交易。

Zetex Semiconductors plc is a UK-based manufacturer of discrete semiconductor devices such as diodes and transistors.

Zetex Semiconductors provides high-performance semiconductor solutions for signal processing and power management applications in the automotive, communications, consumer, and industrial market segments.

Originally a subsidiary of Ferranti Semiconductor, Zetex took its name from Ferranti's ZTX series of bipolar transistors. It was sold to Plessey in 1988, then bought out by management in 1989 to become Zetex plc. At this point it owned two manufacturing sites in Oldham: Gem Mill and Lansdowne Road. It then became a subsidiary of Telemetrix plc, until in 2004 it changed its name to Zetex Semiconductors plc. In 2008 it was acquired by Dallas-based Diodes Incorporated.