Switching diodes, as key components for high-speed switching, pulse processing, and signal shaping in electronic devices, play an important role in various circuit designs. Based on the mainstream brands and technological characteristics in the existing market, they can be divided into the following three categories:
1、 Internationally renowned brand
This type of brand has a deep technical accumulation and high product reliability, especially suitable for demanding scenarios such as automobiles and industries
1. STMicroelectronics:
Vehicle grade products are its strengths, such as the intelligent eFuse series (VNF9Q20F), which has SPI communication, ISO 26262 functional safety certification, supports fast response overcurrent protection (shutdown within 100 μ s) and high temperature stability, and is suitable for new energy vehicle distribution systems.
2. Nexperia：
The product line covers Zener diodes, Schottky rectifiers, and fast recovery switching devices, known for their high cost-effectiveness and stable performance, widely used in consumer electronics and communication equipment.
3. Vishay/WeEn:
Excellent performance in the high-frequency field, such as WeEn's silicon carbide Schottky diode WNSC2D401200CW (1200V/40A), which has near zero reverse recovery charge (Qrr<30nC), significantly improves the efficiency of switching power supplies, and is suitable for server power supplies and photovoltaic inverters.
2、 Leading domestic brand
Local brands have undergone rapid technological iteration in recent years, with outstanding cost-effectiveness and coverage of mid-range and segmented markets
1. Jinan Jingheng Electronics:
Leading domestic Schottky diode with over 40% market share, and the world's best-selling bidirectional trigger transistor (60% market share). Its switching diodes are highly consistent and suitable for home appliances and lighting fields, with customers including GE, Panasonic, and others.
2. Huixin Electronics (HX):
We provide a full range of diode solutions, such as switch tube S1AS1M (DO214AA package), which focuses on fast response and low leakage current characteristics, and is widely used in power management and consumer electronics.
3. Dongguan Pingshang Technology:
Focusing on surface mounted switch tubes (such as BAV19W, BAV70), high temperature resistance (250 ℃) and compliance with RoHS standards, suitable for high-density PCB design.
4. Suzhou Wisent/Rugao Dachang Electronics:
A veteran manufacturer that supplies axial switch diodes to LG, Skyworth, and others, emphasizing voltage resistance (600V level) and industrial stability.
3、 Featured Domain Brands
For special scenarios such as high frequency and high voltage:
High frequency applications:
The WeEn silicon carbide series (such as WNSC2D401200CW) supports MHz level switching frequencies, significantly reducing losses, and is suitable for wireless charging and new energy vehicle systems.
Vehicle grade requirements:
In addition to ST, Nexperia's AECQ101 compliant products are also commonly used for body control modules.
High cost-effective universal model:
The 2AK/2DK series switch tubes from Longjing Microelectronics and Nanshan Electronics are suitable for basic scenarios such as computer pulse circuits.
Selection suggestions
Pursuing ultimate reliability and functional safety → Preferred STMicroelectronics Nexperia；
Balancing cost and performance in mid to high end design → considering Jingheng and Huixin Electronics;
Extreme environments such as high frequency/temperature → Focused silicon carbide solution (such as WeEn).