5SHY3545L0009 3BHB013085R0001 3BHE009681R0101 GVC750BE101 保护电子电力

晶闸管又称可控硅、闸流

晶体管，属半控型功率器件，可用于可控整流、交流调压、保护、无触点电子开关、

逆变及变频领域等。作为基础型功率半导体分立器件，晶闸管具有电压和电流容量

相对较高，可靠性较高，价格低等优势，保证客户在使用过程中提高终端产品的良

品率、减少维修费用，具有突出的性价比优势，有其不可替代的存在意义。

在各厂商晶闸管的下游客户看，欧

美厂商晶闸管终端应用广泛，但由于晶闸管技术成熟且门槛较低，英飞凌等国际大

厂如今逐渐将重心转向新能源汽车、通信等毛利率较高的领域，不断退出中低端市

场；而以捷捷微电为主的大陆厂商则集中在白色家电、小家电、光伏、低压电器、

安防、照明、电表等中低端领域。国内企业凭借高性价比，贴合大陆市场，服务到

位等竞争优势，有望承接全球晶闸管产能转移，市场份额有望不断提升。

半导体防护器件是安装于电路中，当电路出现过电流、过电压或过热等过载情

况时，会自发引发相关功能部位的熔断、电阻突变或其它物理变化，从而切断电路

或抑制电流、电压的突变，起到保护电路，保护电子电力设备作用的一类元器件，

理论上属于二极管，种类繁多，主要有半导体放电管（TSS）、瞬态抑制二极管（TVS）、

静电防护元件（ESD）、高压触发二极管（SIDAC）等，可应用于汽车电子、手机、

户外安防、电脑主机等各类需要防浪涌冲击、防静电的电子产品内部，防护内部昂

贵的电子电路。

21 世纪以前，电路保护元器件一直处于平稳增长的态势，自 21 世纪以来，受

益于数字技术、通讯技术、新能源等多种新技术的发展，电路保护元器件迅速增长。

在这个领域，我国一直是处于相对落后的位臵，竞争力较弱，相比于欧美和日本来

说，我国电路保护元器件一直依靠人力成本和产品的性价比等优势，在细分领域逐

渐建立起优势。

Thyristor, also known as thyristor, thyristor

Transistors are semi controlled power devices that can be used for controllable rectification, AC voltage regulation, protection, contactless electronic switches

Inverter and frequency conversion fields. As a basic power semiconductor discrete device, thyristor has voltage and current capacities

Relatively high reliability, low price and other advantages ensure that customers improve the quality of terminal products during use

Product rate and reduced maintenance costs have outstanding cost performance advantages and irreplaceable significance.

From the perspective of downstream customers of various manufacturers of thyristor

Thyristor terminals from American manufacturers are widely used, but due to mature thyristor technology and low threshold, international giants such as Infineon

The factory is gradually shifting its focus to areas with high gross profit margins such as new energy vehicles and communications, and is constantly exiting the mid to low end market

Field; While mainland manufacturers, mainly focusing on Jiejie Microelectronics, focus on white appliances, small appliances, photovoltaic, low-voltage appliances

Middle and low end fields such as security, lighting, electricity meters, etc. Domestic enterprises rely on high cost performance, fit the mainland market, and serve

With competitive advantages such as position, it is expected to undertake the transfer of global thyristor production capacity, and its market share is expected to continuously increase.

Semiconductor protective devices are installed in a circuit to prevent overloads such as overcurrent, overvoltage, or overheating

In this case, it will spontaneously cause fusing, sudden resistance changes, or other physical changes in the relevant functional areas, thereby cutting off the circuit

Or a class of components that inhibit sudden changes in current and voltage, and protect circuits and electronic and power equipment,

Theoretically, it belongs to a wide range of diodes, mainly including semiconductor discharge tubes (TSS), transient suppression diodes (TVS)

Electrostatic protection components (ESD), high-voltage trigger diodes (SIDAC), etc., can be applied to automotive electronics, mobile phones

Outdoor security, computer hosts, and other electronic products that need to be protected against surge impact and static electricity

Expensive electronic circuits.

Before the 21st century, circuit protection components have been in a steady growth trend. Since the 21st century

Benefiting from the development of various new technologies such as digital technology, communication technology, and new energy, circuit protection components have grown rapidly.

In this field, China has always been in a relatively backward position, with weak competitiveness. Compared to Europe, the United States, and Japan

Said that China's circuit protection components have always relied on advantages such as labor costs and product cost performance

Gradually establish advantages.