A thyristor, also known as an SCR (Silicon Controlled Rectifier), is a type of high-power electrical component. It is also referred to as a silicon-controlled rectifier.
Thyristors are small in size, high in efficiency, and long-lasting. In automatic control systems, they can be used as high-power driving devices, enabling the control of high-power equipment with low-power components. Thyristors are widely used in AC and DC motor speed control systems, power regulation systems, and servo systems.
WAYON has developed and launched two types of conventional thyristor products for the market: unidirectional thyristors and bidirectional thyristors, as shown in Figure 1.
Figure 1: WAYON Thyristor Product Classification
Currently, WAYON's thyristor product series includes 234 specifications, covering nearly 80% of the mainstream thyristor types in the market, meeting the diverse needs of customers.
Unidirectional Thyristors
A unidirectional thyristor is a four-layer, three-terminal semiconductor device with three electrodes: anode (A), cathode (K), and gate (G).
Figure 2: WAYON Unidirectional Thyristor Symbol
Figure 3: WAYON Unidirectional Thyristor Structure
Figure 4: WAYON Unidirectional Thyristor Chip Front Structure
Figure 5: WAYON Unidirectional Thyristor Chip Side Structure
Bidirectional Thyristors
From the perspective of structure and characteristics, a bidirectional thyristor can be considered as an integration of two ordinary thyristors connected in anti-parallel. It is not distinguished by anode and cathode but by terminals T2, T1, or main terminals A2, A1.
Figure 6: WAYON Bidirectional Thyristor Symbol
Figure 7: WAYON Bidirectional Thyristor Structure
Figure 8: WAYON Bidirectional Thyristor Chip Front Structure
Figure 9: WAYON Bidirectional Thyristor Chip Side Structure
WAYON thyristors cover mainstream market packaging, precisely matching various customer application scenarios.
Figure 10: WAYON Thyristor Packaging Forms
Application Scenarios for WAYON Thyristors
1. Gate-Sensitive Unidirectional Thyristors
- Pulse igniters
- Negative ion generators
- Lamp relay exciters
- Leakage protectors
- Universal switches
- Small motor controllers
- Motorcycle igniters
- Logic integrated circuit drives
- Hair straighteners
2. Standard Unidirectional Thyristors
- Universal switches
- Small motor controllers
- Logic integrated circuit drives
- Electric vehicle chargers
- Motorcycle voltage regulators
- Nail guns
- Hair straighteners
- High-power thyristor gate drives
3. Three-Quadrant and Four-Quadrant Bidirectional Thyristors
- Dimming, speed control, temperature control
- Microwave ovens
- Washing machines
- Air conditioners
- Soy milk makers
- Blenders
- Hair straighteners
- Vacuum cleaners
- Water dispensers
- Lawn mowers
- Paper shredders
- Smart switches
WAYON's laboratory has an excellent reliability testing system, strictly controlling product quality to ensure that product performance meets specification requirements.
Figure 11: WAYONReliability Test Capability
Figure 12: WAYON Reliability Standards
Figure 13: WAYON Reliability Testing Equipment
In the future, WAYON will continue to deepen product research and development, constantly optimize product performance, empower end-users with a comprehensive quality management system and excellent customer service standards, continuously enhance product competitiveness, and bring more high-quality product choices to the market.
