14 DIAC Manufacturers in 2024
This section provides an overview for diacs as well as their applications and principles. Also, please take a look at the list of 14 diac manufacturers and their company rankings. Here are the top-ranked diac companies as of November, 2024: 1.Wuxi Xuyang Electronics Co., Ltd., 2.Taiwan Semiconductor, 3.Nantong Hantech Electronics Co., Ltd.
Table of Contents
What Is a DIAC?
A DIAC, or diode for alternating current, functions in AC circuits to distribute current in both directions once a specific voltage threshold is exceeded. Also known as a trigger diode, it comprises two parallel-connected diodes facing opposite directions, enabling it to control switching operations effectively in AC power supplies. Its use extends to triggering devices like triacs for applications in lighting dimming and heating control, leveraging its bidirectional current flow for smooth operation. The simplicity of its two-terminal design facilitates less complex circuit configurations, enhancing design efficiency and longevity over mechanical switches.
Applications of DIACs
DIACs serve various roles in electrical systems, including:
Lighting Dimming
They play a crucial role in adjusting lighting brightness, where their triggering action ensures smooth transitions in luminosity.
Heating Control
In heating systems and ovens, DIACs contribute to temperature regulation by controlling the activation of heating elements for consistent heat distribution.
Electric Motor Control
DIACs are instrumental in managing AC electric motors, particularly in adjusting rotation direction and speed, in conjunction with triacs and SCRs for precise current control.
Operating Principle of DIACs
DIACs are characterized by their PNPn semiconductor structure, activating to conduct AC signals beyond a threshold voltage in both positive and negative cycles. This bidirectional capability ensures seamless operation across AC power supply fluctuations, with current flow maintained until the input voltage falls below the threshold.
Selecting DIACs
When choosing a DIAC, consider the following factors.
Breakover Voltage
Select a DIAC with a breakover voltage that matches the application requirements, ensuring it can initiate conduction at the desired voltage level.
Rated Current
The DIAC should support the maximum current demand of the circuit without compromising performance, as indicated by its current rating.
Rise Time
For applications requiring swift switching, the DIAC's rise time, or the speed at which it enters a conduction state, becomes critical.
Leakage Current
Opt for DIACs with minimal leakage current to enhance efficiency, especially in applications where precision is key.
Package Type
Choose an appropriate package type based on the physical constraints and installation requirements, with common options including DO-35, TO-92, and TO-220.
List of 14 DIAC Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- United States of America
- China
- Germany
- India
- Taiwan
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Central Semiconductor
PN UJT
Manufacturer Overview
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.
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NetSource Technology, Inc.
DIACS
Company Overview
Founded in San Clemente, California in 1997, NetSource Technology, Inc. is an independent stocking distributor of electronic components and global procurement services, providing comprehensive supply chain solutions to OEMs and contract manufacturers worldwide. NetSource Technology serves the aerospace, automotive, IoT, medical, mobile device, and telecommunications industries and related companies. NetSource Technology specializes in locating hard-to-find, obsolete, end-of-life and highly allocated components with long lead times, supporting customers throughout the complete supply chain lifecycle.
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Continental Device India Pvt. Ltd.
DIAC TRIGGER
Manufacturer Overview
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).
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Wuxi Xuyang Electronics Co., Ltd.
db3 diac diode
Manufacturer Overview
Wuxi Xuyang Electronics Co., Ltd., founded in 2001 and based in Jiangsu, China, is a manufacturer of thermistor diodes, Zener diodes, transient voltage suppressor diodes, and DIAC trigger diodes. These electronic components are used for precision and stability, making them essential in various applications. Thermistor diodes are needed for their temperature-sensing capabilities, helping maintain optimal operating conditions in electronic devices. DIAC trigger diodes are essential for triggering and controlling the firing angle in electronic circuits. These components find applications across industries such as telecommunications, automotive, consumer electronics, and industrial automation.
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Diotec Semiconductor AG
Diacs
Manufacturer Overview
Diotec Semiconductor AG is a German-based semiconductor manufacturer and supplier of diodes and rectifiers which was founded in 1973 and is headquartered in Heitersheim, Germany. They specialize in producing discrete semiconductors, both standard and customized, readily available for worldwide delivery. Their product portfolio includes diodes, rectifiers, protection devices (TVS/ESD), transistors, and regulators. These products are used in various applications such as in industrial, energy, mobility, lighting, and consumer electronics, contributing to power management, signal conditioning, and circuit protection in different electronic systems and devices.
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Topdiode Manufacturing Company Limited
Diac Trigger Diode
Manufacturer Overview
Topdiode Manufacturing Company Limited is a manufacturer and supplier of multilayer ceramic chip capacitors (MLCCs) and diodes. Established in 1995, the company is headquartered in Changping, Dongguan, Guangdong, China. Its main activities encompass the design, production, and distribution of MLCCs and diodes such as Ceramic capacitors, Tantalum capacitors, Varistors, Aluminum Electrolytic capacitors, and Film capacitors. Topdiode specializes in electronic components that are essential in various industries, including telecommunications, automotive, and consumer electronics. Topdiode Manufacturing Company Limited offers comprehensive services such as technical support and custom solutions.
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Nantong Hantech Electronics Co., Ltd
Diac DB3
Manufacturer Overview
Nantong Hantech Electronics Co., Ltd., established in 1969 and headquartered in Jiangsu, China, is a supplier and manufacturer specializing in high-voltage diodes and rectifier diodes. Their extensive product line includes high voltage diodes for AC to DC conversion in applications like power supplies, welding machines, and microwave ovens. Additionally, they offer rectifier diodes for LED drivers, solar cells, and battery chargers, Schottky diodes for high-frequency applications, varactors for circuit tuning, and transistors for signal amplification and switching. The company's products are compliant with RoHS and REACH regulations.
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Jinan Jingheng Electronics Co., Ltd.
DIAC
Manufacturer Overview
Jinan Jingheng Electronics Co., Ltd. is a manufacturer and supplier of electronic components. Established in 1958, the company is based in Jinan, Shandong, China. The company's main activities involve designing, manufacturing, and supplying a diverse range of electronic components, including resistors, capacitors, and inductors. Its diodes products such as Low Vf Schottky, Schottky Barrier Rectifier, SIC Schottky, General Purpose Rectifier and Fast Recovery Rectifier cater to industries such as electronics manufacturing and telecommunications. Jinan Jingheng Electronics offers services like technical support and customized component solutions to customers, such as Ge, Philips, Osram, Panasonic, Samsung, Foxconn, Bosh.
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Lision Technology Inc.
SIDAC
Manufacturer Overview
Lision Technology Inc. is a Taiwanese manufacturer of discrete, motor and analog integrated circuit (IC) products established in 2001 and based in Zhongli City, Taoyuan. The company manufactures various discrete products including diodes and metal-oxide-semiconductor field-effect transistors (MOSFETs), analog products such as regulators and timers, and motor products including application-specific integrated circuits (ASICs). They also offer design support and capacity planning services for customers requiring technical assistance. Lision Technology Inc. primarily serves client companies and OEMs in the consumer electronics, computing, and communication sectors.
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STMicroelectronics
Diacs
Manufacturer Overview
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.
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Taiwan Semiconductor
SODDB3
Company Overview
Taiwan Semiconductor, established in 1979 in Taiwan, is a manufacturer and distributor of integrated circuits and wafer semiconductor devices for commercial and industrial customers worldwide. The company's product line includes discrete power rectifiers, power transistors, LED driver ICs, analog ICs, and ESD protection devices. Taiwan Semiconductor has production facilities in China and Taiwan that are compliant with automotive and environmental standards, including IATF 16949, ISO 9001, and ISO 14001. Taiwan Semiconductor is also a member of the ECIA and the PSMA.
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TestEquity LLC
DIAC
Distributor Overview
TestEquity, founded in 1971 and headquartered in Moorpark, California, operates as a distributor specializing in test and measurement solutions, as well as production supplies. The company provides an assortment of electronic test equipment, including meters, oscilloscopes, signal generators, and thermal imaging devices. Additionally, TestEquity supplies tools like soldering equipment, microscopes, and safety products, alongside rental options. Its services encompass calibration, repair, rental and leasing alternatives, asset management, trade-in and consignment programs.
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Grid Solutions
DIAC
Distributor Overview
Grid Solutions, established in 1892, is a global producer and distributor of GE Renewable Energy solutions headquartered in Boulogne-Billancourt, France. The company is a part of GE Vernova with over 12,000 employees offering equipment, systems, and services to power utilities and industries, ensuring efficient power delivery from generation to consumers. These include Power Electronics, High Voltage Equipment, Automation & Protection, Software Solutions, and Projects & Services. Addressing the challenges of the energy transition, Grid Solutions provides safe integration of renewable and distributed energy into the grid using HV/MV equipment, gas-insulated substations, and more.
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Hybrid Electronics Corporation
DIACS
Distributor Overview
Hybrid Electronics is a global distribution specialist of electronic components, with access to over 50 million unique components. Among the markets HE serves are the aerospace, automotive, communications, defense, industrial, medical, national security, and test & measurement industries. In addition to components, HE also provides quality and compliance testing, counterfeit detection, upscreening, and other forms of quality control. Examples of component subtypes that HE offers include ICs, batteries, capacitors, semiconductor products, sensors, circuit protection, interconnectors, filters, optoelectronics, relays, switches, power supplies, and cables and cable assemblies.
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DIAC Manufacturer Ranking
*Including some distributors, etc.Ranking as of November 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Wuxi Xuyang Electronics Co., Ltd. |
14.7%
|
| 2 | Taiwan Semiconductor |
14.7%
|
| 3 | Nantong Hantech Electronics Co., Ltd |
11.8%
|
| 4 | Topdiode Manufacturing Company Limited |
8.8%
|
| 5 | IBS Electronics |
8.8%
|
| 6 | NetSource Technology, Inc. |
8.8%
|
| 7 | Grid Solutions |
8.8%
|
| 8 | TestEquity LLC |
5.9%
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| 9 | Diotec Semiconductor AG |
5.9%
|
| 10 | STMicroelectronics |
5.9%
|
Derivation Method
The ranking is calculated based on the click share within the diac page as of November 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
- Wuxi Xuyang Electronics Co., Ltd.: 2001 (23 years ago)
- Lision Technology Inc.: 2001 (23 years ago)
- Topdiode Manufacturing Company Limited: 1995 (29 years ago)
Company with a History
- Jinan Jingheng Electronics Co., Ltd.: 1958 (66 years ago)
- Diotec Semiconductor AG: 1973 (51 years ago)
- Taiwan Semiconductor: 1979 (45 years ago)
DIAC Manufacturers in United States
*Including some distributors, etc.
Global Distribution of DIAC Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
China
|
4 | 44.4% |
United States of America
|
2 | 22.2% |
India
|
1 | 11.1% |
Germany
|
1 | 11.1% |
Taiwan
|
1 | 11.1% |
