All Categories
This section provides an overview for triacs as well as their applications and principles. Also, please take a look at the list of 7 triac manufacturers and their company rankings. Here are the top-ranked triac companies as of December, 2024: 1.Naina Semiconductor Limited, 2.Solid State Manufacturing, 3.Central Semiconductor.
Table of Contents
TRIAC stands for "Triode for Alternating Current" and is a type of semiconductor switch with three terminals.
TRIAC has a structure in which two thyristors are connected in parallel so that they are in opposite directions to each other, and the bi-directional current switching operation can be controlled by a single gate.
Due to their ability to carry current in both directions, TRIACs are used as AC switches. AC power can also be easily controlled by shifting the phase of the gate input.
TIRACs are used in remote control switches for high-power home appliances such as TVs and air conditioners because they can control high-current switching with a small gate signal.
In addition, since the amount of power can be controlled by shifting the phase of the gate input relative to AC, TRIACs are used in various applications, including dimmers for lighting, ballasts to maintain a constant current for fluorescent lights, speed control of motors for fans, air conditioners, washing machines, etc. They are also used for temperature control of refrigerators, speed control of AC trains, and industrial equipment using motors.
Thyristor, which constitutes TRIACs, has a PNPN four-layer structure, which can be represented by an equivalent circuit consisting of PNP-type and NPN-type bipolar transistors combined and connected to PNP-type gate, and NPN-type anode, PNP-type cathode, and NPN-type gate.
When a gate signal is input and a forward voltage is applied between the anode and cathode, the two transistors enter the ON state. The on-state of both transistors is positively returned to each other's gate input, resulting in a stable on-state. Once the current begins to flow between the anode and cathode, it continues to flow even when the gate signal is lost.
When a reverse voltage is applied between the anode and cathode, the thyristor enters off-state and the current is interrupted. Thus, when an alternating current is applied between the anode and cathode of the thyristor, it works by supplying power for only half of an AC cycle and blocking the current in the reverse direction.
TRIACs consist of two thyristors that operate in this manner, connected in parallel so that they are in opposite directions to each other.
When a gate current is applied, the thyristor connected in the forward direction turns on, and current flows only as long as the forward voltage is applied to the TRIACs. At the end of the half-cycle of alternating current, the thyristor that was in the ON state becomes reverse biased and goes off state, and no current flows.
Then, when the gate current is input again in the second half cycle of reverse bias, the thyristor on the opposite side turns on this time. In this way, a single gated input controls the switching timing of the current in both directions.
In addition, shifting the phase of the gate current relative to the AC current changes the time that the TRIACs are in the ON state, thereby controlling the amount of power supplied.
*Including some distributors, etc.
Sort by Features
Sort by Area
The Central Semiconductor Corporation is an ISO 9001:2015-certified electronics manufacturer in Hauppauge, NY. Since it was founded in 1974, the corporation has expanded to serve the global market. Its main product line is discrete semiconductors. All products are RoHS2 and REACH compliant. The corporation also manufactures diodes, rectifiers, transistors, and protection devices. Central Semiconductor provides semiconductor solutions for several industries including alternative energy, consumer products, scientific/industrial, networking, lighting, and the medical industry.
Naina Semiconductor Limited established in Noida, Uttar Pradesh in 1988 is a manufacturer of power semiconductors used in Welding machines, Battery Chargers, and Power Supplies. Their product portfolio includes Zener Diodes, Auto Rectifiers, Solar Diodes, Power Modules, and Rectifier Stacks/Assemblies. The company has ISO 9001:2015 Certification and their devices has international JEDEC package standards. They have a national distribution channel and customer support center and they export to the USA, UK, Middle-East, Europe, and South-East Asia.
Continental Device India Pvt. Ltd. (CDIL), established in 1964, is a semiconductor manufacturer headquartered in New Delhi, India. Certified with ISO 9001:2015 and ISO 14001, the company produces TRIACs, SCRs, and TVSs. It also offers complementary products, including diodes, rectifiers, and transistors. These products adhere to the European Union's Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS) Directives. The company expanded its services by launching the Electronic Manufacturing Services (EMS) division, Deltron, in 1982. It also manufactures space-grade semiconductor devices for the Indian Space Research Organisation (ISRO).
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. (SEM) is a Japanese manufacturer of semiconductors and power system products that was established in Chiyoda-ku, Tokyo in 1949. The company primarily produces power management electronics such as engine control units (ECUs) and DC/DC converters, charge infrastructure products including inverters and power conditioners, and semiconductor models such as thyristors and MOSFETS. SEM products are used in various high-tech applications, including in telecommunications base stations and electric vehicles. The company serves clients in automotives, home appliances, telecommunications, and energy production.
Renesas Electronics Corporation was established in 2002 and is headquartered in Tokyo, Japan. Renesas is a global research, design, and manufacturer of semiconductors used in industries spanning automotive, consumer electronics, the internet of things, power & energy, and industrial sectors. Renesas manufactures both analog and digital products. Analog products include amplifiers, audio & video devices, data converters, PLC, and switches & multiplexers. Digital products include microcontrollers, memory components, sensors, wireless connectivity products, and others. Renesas also offers design resources such as kits, development tools, partner programs, and design tools.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Solid State MFG is a semiconductor manufacturer based in New Jersey. Their product portfolio includes Rectifiers, Diodes, Triacs, Diacs, and IGBT (Insulated-Gate Bipolar Transistors) as different types of semiconductors. These products provide protection for various applications such as power supply, voltage clamping, and regulating the voltage flow in small circuits along with full-wave rectification. The Diodes are used as clamping devices for the protection of electronics against spike in voltage and the SCRs (Silicon-Controlled Rectifiers) function as lamp-dimming regulators and controllers of welding machines. The IGBT has uses in trains, air conditioners, stereo systems, and electric cars.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Naina Semiconductor Limited |
30.5%
|
| 2 | Solid State Manufacturing |
16.8%
|
| 3 | Central Semiconductor |
14.5%
|
| 4 | Continental Device India Pvt. Ltd. |
11.5%
|
| 5 | SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. |
9.9%
|
| 6 | Renesas Electronics Corporation. |
9.9%
|
| 7 | STMicroelectronics |
6.9%
|
Derivation Method
The ranking is calculated based on the click share within the triac page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
India
|
2 | 40.0% |
|
Japan
|
2 | 40.0% |
|
United States of America
|
1 | 20.0% |
Seiwa Co., Ltd.
50+ people viewing
Last viewed: 41 minutes ago
This is a photocoupler with phototriac output.
SANSHA ELECTRIC MANUFACTURING CO., LTD.
390+ people viewing
Last viewed: 4 hours ago
■Features Unlike a thyristor, which switches current in one direction, a triac can switch in both directions. Therefore, triacs can be used in alte...
10 models listed
RKC INSTRUMENT
170+ people viewing
Last viewed: 7 hours ago
■What is solid state relay (SSR)? Generally abbreviated as SSR, it is a device that turns on/off power to the heater using a semiconductor relay (t...
2 models listed
Würth Elektronik
10+ people viewing
■Features ・Zero cross and non-zero cross (random phase) types -Various trigger currents and peak-off voltages available ・High insulation voltage ...
Sanshin Electric Co., Ltd.
10+ people viewing
Last viewed: 14 hours ago
