Schottky diodes, as an efficient and high-frequency semiconductor device, are widely used in fields such as power management, automotive electronics, and consumer electronics. Their brand manufacturers can be divided into two categories: internationally leading enterprises and rapidly rising domestic manufacturers, each forming a differentiated layout in terms of technology route, product positioning, and market strategy.
1、 International leading brand
ROHM (ROHM Semiconductor)
ROHM in Japan is a benchmark enterprise in the Schottky diode field, focusing on high-temperature and high-voltage technology. Its representative products, such as the 200V withstand voltage "RBxx8BM/NS200" series, adopt an ultra-low reverse current (IR) design to solve the problem of thermal runaway in high-temperature environments. The VF characteristics are reduced by about 11% compared to traditional FRD, making it particularly suitable for xEV power systems, industrial inverters, and other scenarios. This series offers 212 models (such as TO252 and TO263 packages) that support the automotive grade AECQ101 standard, demonstrating its advantages in reliability and compact packaging (such as 2.5 × 4.7mm).
2、 Domestic main brands
DOWOSEMI Electronics
One of the few Schottky manufacturers in China with full voltage coverage, offering reverse voltage products ranging from 20V to 300V, with a current range of 0.35A-10A. For example, the 20V series SD103CW (0.35A), SS102 (10A), etc., cover packages such as SOD123 to TO277B. Its characteristic lies in solution level services, including EMC testing and customized design, widely used in automotive electronics and smart wearable devices.
Sako Micro (SLKOR)
National high-tech enterprise, with a technical team originating from Tsinghua University, specializing in third-generation semiconductor technology. In addition to silicon-based Schottky diodes, the focus is on the layout of silicon carbide (SiC) Schottky diodes to meet the high temperature and high voltage needs of new energy vehicles, photovoltaic inverters, and other applications. The product has passed RoHS/REACH certification and provides supporting components such as Hall elements and TVS.
Shenzhen Guanrong Electronics
A large-scale manufacturer with an annual production capacity of 3 billion units, with product lines covering Schottky (SKY), TVS, rectifier bridges, and more. Our main brand is "SUNMATE" Schottky (such as BYS1190), which complies with the IATF16949 automotive quality system and provides halogen-free customized services. Our customers cover the fields of industrial control and consumer electronics.
Guangdong Jiaxun Electronics
Focus on Low VF (Low Forward Voltage Drop) technology to optimize energy efficiency performance. The product line includes Schottky, SiC/GaN devices with various packaging forms (SMA-TO263), suitable for medium to high power scenarios such as power adapters and LED drivers.
Shenzhen Haochang Semiconductor
Specializing in micro patch Schottky, representative model K14 (SOD123FL package, 40V/1A), VF as low as 0.55V, targeting consumer markets such as power banks and small home appliance controllers, with advantages of high cost-effectiveness and fast delivery (one-day shipping).
Guangzhou Zhirun Electronics
A veteran diode manufacturer with products covering Schottky TVS、 The full range of products, including bridge piles, have passed ISO9001/14001 certification and specialize in civilian fields such as home appliances and security monitoring, emphasizing cost control and bulk supply capabilities.
3、 Comparison of core competencies
The following table summarizes the technology and market positioning of the main brands:
|Brand | Technical Advantages | Featured Products | Application Fields|
|ROHM | 200V withstand voltage, ultra-low IR | RBxx8 series (AECQ101) | Automotive power system, industrial inverter|
|Dongwo Electronics | Full voltage/current coverage | 20V-300V multi package models | Automotive electronics, smart wearables|
|Sako Micro | SiC Schottky Devices | Silicon Carbide Diodes/MOS Transistors | New Energy Vehicles, Photovoltaic Inverters|
|Guanrong Electronics | Halogen free customization | BYS1190 and other surface mount Schottky diodes | Consumer electronics, industrial control|
|Haochang Semiconductor | Micro SMT, Low VF | K14 (SOD123FL) | Mobile phone charger, small home appliance|
The Schottky diode market presents a pattern of "high-end international leadership, mid to low end domestic substitution":
International brands such as ROHM dominate the high-end automotive and industrial markets with high reliability;
Domestic brands cover consumer electronics and emerging fields through customized services (Dongwo), new material applications (Sako Wei), and cost advantages (Haochang, Zhirun).
With the popularization of new energy vehicles and fast charging technology, Schottky products with high voltage resistance and low loss characteristics (such as ROHM's 200V series and Sako Micro SiC devices) will become the focus of competition, and the advantages of domestic manufacturers in localized services and rapid response will further promote the industry's brand washing.