Power electronics companies in Ohio design systems and components that manage and convert electrical energy efficiently. This sector includes manufacturers of power supplies, semiconductors, and control devices essential for industrial applications, automotive systems, and renewable energy initiatives. With growing emphasis on sustainability, the industry is evolving towards innovative solutions such as advanced battery technologies and electric vehicle components. This trajectory reflects the increasing demand for energy efficiency, especially within sectors like healthcare and telecommunications, where reliable power management is critical. As technology advances, these companies are set to enhance performance while ensuring compliance with rigorous environmental standards.

The Ohio power electronics sector features a mix of small to medium-sized companies, with headquarter locations spanning major cities like Cleveland, Willoughby, and Columbus. Founded as early as 1942 and as recently as 2012, these firms focus on various specializations, from manufacturing power management devices to providing engineering services. With company sizes ranging from fewer than 10 employees to over 500, competition drives innovation and custom solutions aimed at fulfilling specific industry needs, particularly in energy, automotive, and telecommunications.

Read on to discover the top power electronics companies in Ohio.

Top 23 Power Electronics Companies in Ohio

1. Darrah Electric Company

• Website: darrahelectric.com
• Ownership type: Family Owned
• Headquarters: Cleveland, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1960
• Headcount: 11-50
• LinkedIn: darrah-electric-co

Darrah Electric Company, based in Cleveland, Ohio, has been a family-owned business since its founding in 1960. The company specializes in manufacturing and distributing power semiconductors, DC power supplies, heat sinks, and assemblies tailored for industrial applications. With a workforce of approximately 29 employees, Darrah Electric serves a variety of sectors, including electrical engineering and renewable energy. Their products are essential for efficient power management, and they pride themselves on offering customized solutions that meet specific customer needs. The company also provides engineering and design support, ensuring that clients receive practical and economical solutions. Their extensive inventory and quick turnaround times further enhance their service offerings, making them a reliable partner in the power electronics industry.

2. Process Technology

• Website: processtechnology.com
• Ownership type: Corporate
• Headquarters: Willoughby, Ohio, United States (USA)
• Employee distribution: United States (USA) 91%, Mexico 7%, Other 2%
• Latest funding: $11.8M, September 2007
• Founded year: 1978
• Headcount: 201-500
• LinkedIn: process-technology

Process Technology, founded in 1978 and based in Willoughby, Ohio, is a thermal solutions provider that designs and manufactures high-quality heating and power supply products. The company serves a variety of industries, including semiconductor manufacturing, medical devices, and surface finishing. Their product offerings include inline heaters, immersion heaters, power supplies, and process controls, all tailored to meet specific manufacturing needs. With a strong emphasis on innovation and collaboration with customers, Process Technology aims to deliver reliable and efficient solutions. The company has also been recognized in the industry, being named a top power electronics solutions provider by Manufacturing Insights Magazine. This recognition underscores their commitment to quality and performance in the power electronics sector.

3. Nexceris

• Website: nexceris.com
• Ownership type: Private
• Headquarters: Lewis Center, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: Other (Grant), $866,000, April 2014
• Founded year: 1994
• Headcount: 51-200
• LinkedIn: nexceris

Nexceris, founded in 1994 and based in Lewis Center, Ohio, is an energy technology company that specializes in innovative sensor, power generation, and catalyst solutions. With a workforce of around 51-200 employees, Nexceris serves a variety of sectors, including utilities, chemical manufacturing, and energy production. The company has made significant strides in developing solid oxide fuel cells (SOFC) and advanced battery technologies, including sodium solid-state batteries. Their products, such as the Li-ion Tamer, focus on improving battery safety and efficiency. Nexceris has also established a strong presence in the hydrogen generation market through their expertise in solid oxide electrolysis. Their commitment to innovation is reflected in their patent portfolio, which includes multiple U.S. and foreign patents. Nexceris collaborates with various organizations, including academic institutions and government agencies, to advance energy technologies and support clean energy transitions.

4. AMETEK Solidstate Controls

• Website: solidstatecontrolsinc.com
• Ownership type: Corporate
• Headquarters: Columbus, Ohio, United States (USA)
• Employee distribution: United States (USA) 91%, Mexico 2%, Brazil 2%, Other 5%
• Latest funding: $36.0M, June 2003
• Founded year: 1962
• Headcount: 201-500
• LinkedIn: solidstate-controls-inc

AMETEK Solidstate Controls, based in Columbus, Ohio, is a for-profit company that specializes in power management solutions. Founded in 1962, the company has built a reputation for providing essential products such as uninterruptible power supply (UPS) systems, industrial inverters, and power conditioners. These products are crucial for businesses in sectors like manufacturing, energy, and telecommunications, where reliable power supply is vital. AMETEK Solidstate Controls focuses on protecting sensitive equipment from electrical disturbances, ensuring operational continuity for their clients. With a workforce of around 125 employees, the company maintains a significant presence in the United States, while also having a small footprint in Mexico, Brazil, Singapore, and Argentina. Their commitment to power quality and management positions them as a relevant player in the power electronics industry.

5. Dm Associates

• Website: dmassociatesllc.com
• Ownership type: Private
• Headquarters: Westerville, Ohio, United States (USA)
• Employee distribution: India 90%, United States (USA) 10%
• Founded year: 1967
• Headcount: 1-10
• LinkedIn: dm-associates

Dm Associates, established in 1967 and based in Westerville, Ohio, specializes in representing manufacturers of electronic components and solutions. The company serves a variety of sectors, including industrial, medical, consumer, transportation, and military/aero. Their product offerings include power supplies, sensors, and switches, catering primarily to original equipment manufacturers (OEMs) and businesses seeking reliable electronic solutions. With a small team of around 21 employees, Dm Associates operates mainly in the Midwest United States and Mexico, facilitating connections between manufacturers and customers. Their focus on product development and customer relationships highlights their commitment to integrity and longevity in the industry. Although they do not report any funding, their long-standing presence in the market suggests a stable operational history.

6. Weastec, Inc.

• Website: weastec.com
• Ownership type: Private
• Headquarters: Hillsboro, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1988
• Headcount: 201-500
• LinkedIn: weastec-inc.

Weastec, Inc., founded in 1988 and based in Hillsboro, Ohio, is a private company that manufactures electrical components tailored for the automotive, power equipment, and power sport industries. As a subsidiary of Toyodenso, Weastec plays a crucial role in supplying original equipment manufacturers (OEMs) with vital components like HMI switches, sensors, and control modules. The company emphasizes innovation and quality, responding to the evolving demands of the market, particularly with the increasing focus on electric vehicles and advanced automotive technologies. Weastec has established a technical center in Dublin, Ohio, to enhance its research and development capabilities, ensuring they remain competitive and relevant in a rapidly changing industry. Their commitment to sustainability and community service also reflects a broader corporate responsibility ethos, which is increasingly important in today's business environment.

7. Energy Technologies, Inc.

• Website: ruggedsystems.com
• Ownership type: Private
• Headquarters: Mansfield, Ohio, United States (USA)
• Employee distribution: United States (USA) 67%, Canada 33%
• Founded year: 1991
• Headcount: 51-200
• LinkedIn: energy-technologies-inc.

Energy Technologies, Inc. (ETI), founded in 1991 and based in Mansfield, Ohio, is a private company that specializes in rugged power solutions. With a workforce of around 21 employees, ETI focuses on manufacturing a variety of products, including Uninterruptible Power Supplies (UPS) and power distribution units. Their primary clientele includes military, industrial, and telecommunications sectors, where reliability is paramount. ETI's products are designed to withstand harsh conditions, making them suitable for high-reliability applications. The company has developed a range of offerings, such as frequency converters, power conditioners, and intelligent power systems, all tailored to meet the demanding needs of their customers. Their commitment to quality and performance is evident in their adherence to military specifications and their extensive testing protocols. ETI's products are utilized globally, from military bases to industrial facilities, underscoring their significant role in providing dependable power solutions for critical operations.

8. Spang Power Electronics

• Website: spangpower.com
• Ownership type: Family Owned
• Headquarters: Mentor, Ohio, United States (USA)
• Employee distribution: United States (USA) 88%, China 12%
• Founded year: 1953
• Headcount: 11-50
• LinkedIn: spang-power-electronics

Spang Power Electronics, based in Mentor, Ohio, has been a family-owned manufacturer since its founding in 1953. The company specializes in high-quality power solutions, particularly in SCR Power Controllers, Transformers, and Power Systems. Their products cater to critical industries such as glass manufacturing, hydrogen production, and industrial heating. Spang Power Electronics prides itself on its application expertise and customer collaboration, ensuring that their solutions meet specific industry needs. With a workforce of around 32 employees, the company maintains a strong presence in the United States while also having a manufacturing facility in China. Their commitment to quality is underscored by ISO 9001 certification across all locations, reinforcing their dedication to performance and reliability in power control and conversion.

9. Delta Systems, Inc.

• Website: deltasystemsinc.com
• Ownership type: Private
• Headquarters: Streetsboro, Ohio, United States (USA)
• Employee distribution: United States (USA) 97%, France 3%
• Latest funding: $4.0M, May 2005
• Founded year: 1972
• Headcount: 201-500
• LinkedIn: delta-systems-inc-

Delta Systems, Inc., founded in 1972 and based in Streetsboro, Ohio, is a manufacturer of electronic components that specializes in switches, controllers, displays, and sensors tailored for outdoor power equipment and related industries. The company has built a reputation for providing reliable and durable electronic solutions, serving major original equipment manufacturers (OEMs) and businesses that require high-quality components. Delta Systems operates with a commitment to quality and innovation, offering manufacturing and engineering services that enhance their product offerings. Their products are designed to withstand harsh environments, making them suitable for applications in outdoor power equipment, agriculture, construction, and more. Delta Systems has a strong focus on customer satisfaction, adhering to high standards of integrity and excellence in their operations. They have a manufacturing facility in the United States, where they produce a wide range of electronic components, ensuring that their products meet rigorous quality standards.

10. InPower, LLC

• Website: inpowerelectronics.com
• Ownership type: Corporate
• Headquarters: Lewis Center, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: January 2021
• Founded year: 2002
• Headcount: 11-50
• LinkedIn: inpower-llc

InPower, LLC, based in Lewis Center, Ohio, has been a player in the power electronics sector since its founding in 2002. The company focuses on manufacturing electrical system solutions that enhance power efficiency and control for a variety of vehicles, including delivery trucks, emergency vehicles, and recreational vehicles. Their product lineup includes engine idle management systems, DC power contactors, battery management solutions, and intelligent controls, all designed to meet the specific needs of their clients in the automotive and transportation industries. InPower prides itself on its ability to provide customized solutions, leveraging in-house engineering and manufacturing capabilities to address unique technical challenges. The company operates entirely within the United States and emphasizes the importance of rigorous testing and quality assurance in its manufacturing processes. This dedication to innovation and customer service has allowed InPower to establish a solid reputation in the market.

11. Perfect Electronics

• Website: perfectelectronics.com
• Ownership type: Private
• Headquarters: Cleveland, Ohio, United States (USA)
• Employee distribution: India 68%, Argentina 32%
• Founded year: 1978
• Headcount: 51-200
• LinkedIn: perfect-electronics

Perfect Electronics Private Limited, founded in 1978 and based in Cleveland, Ohio, is a private electronics manufacturer that specializes in producing critical components such as inductors and transformers. The company serves the electronics manufacturing sector, providing essential parts for consumer electronics, including televisions and audio equipment. With a workforce of around 28 employees, they focus on delivering high-quality products that address specific technical challenges in electronic design and manufacturing. Their product range includes line filter chokes, fixed inductors, and switch mode power supply transformers, which are vital for filtering harmonics and protecting internal circuits in various electronic devices. The company operates a factory in Chennai, India, which supports their production capabilities and quality control processes. Perfect Electronics has maintained a steady presence in the industry, catering to the needs of businesses in the electronics sector.

12. JF Kilfoil Company

• Website: jfkilfoil.com
• Ownership type: Private
• Headquarters: Cincinnati, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1953
• Headcount: 11-50
• LinkedIn: jf-kilfoil-company

JF Kilfoil Company, founded in 1953 and based in Cincinnati, Ohio, is a manufacturer representative that specializes in electronic components. With a team of 18 employees, the company has built a reputation for providing a wide array of products and engineering solutions tailored to the needs of various industries, including automotive, medical, and military sectors. JF Kilfoil emphasizes timely delivery and quality assurance, ensuring that their clients receive reliable components for their electronic needs. Their product offerings include capacitors, connectors, and solutions for electrical power, among others. The company prides itself on developing long-standing relationships with proven manufacturers, which allows them to support over 3,000 engineers annually. Their commitment to quality and customer service positions them as a valuable partner in the electronic components market.

13. R-K Electronic, Inc.

• Website: rke.com
• Ownership type: Private
• Headquarters: Mason, Ohio, United States (USA)
• Employee distribution: India 100%
• Founded year: 1949
• Headcount: 11-50
• LinkedIn: r-k-electronic-inc.

R-K Electronic, Inc., founded in 1949 and based in Mason, Ohio, is a manufacturer specializing in electrical automation control components. The company produces a range of products, including single-phase and three-phase voltage relays, AC current relays, electronic timers, and transient voltage filters. R-K has a strong emphasis on custom solutions, tailoring their products to meet the specific requirements of their clients across various industries. Their commitment to innovation is evident in their focus on developing control components that enhance functionality and safety in electrical systems. R-K's history reflects a transition from panel building to a dedicated focus on electronics, allowing them to adapt to changing technologies and market demands. With a workforce of around 28 employees, R-K continues to serve its customers with a commitment to quality and customer satisfaction.

14. Staco Energy Products

• Website: stacoenergy.com
• Ownership type: Private
• Headquarters: Miamisburg, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1937
• Headcount: 51-200
• LinkedIn: staco-energy

Staco Energy Products Co., based in Miamisburg, Ohio, has been a significant player in the power quality industry since its inception in 1937. The company specializes in a range of power electronics products, including uninterruptible power supplies (UPS), emergency lighting inverters, and harmonic mitigation systems. Staco serves various sectors, particularly healthcare and manufacturing, where reliable power is critical for operations. Their product offerings also include variable transformers, power conditioning solutions, and frequency converters, catering to specific needs in power management. Staco emphasizes customer support through services like preventive maintenance and technical training, ensuring that their clients can maintain optimal performance of their power systems. With a dedicated workforce and a focus on quality, Staco Energy Products continues to play a vital role in the power electronics industry.

15. Ohio Semitronics, Inc.

• Website: ohiosemitronics.com
• Ownership type: Private
• Headquarters: Hilliard, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1964
• Headcount: 51-200
• LinkedIn: ohio-semitronics-inc-

Ohio Semitronics, Inc., founded in 1964 and based in Hilliard, Ohio, is a manufacturer specializing in electrical measurement devices and transducers. The company has carved out a niche in providing both standard and custom solutions tailored to the needs of various industries, including military, oil and gas, battery and energy storage, HVAC, solar, utility, rail transit, and electric vehicles. Their products include a wide range of transducers, signal conditioners, relays, and power supplies, all designed to ensure accurate electrical measurements. Ohio Semitronics has a strong reputation for innovation, having pioneered the first Hall Effect electrical measurement devices. Their commitment to quality is underscored by their ISO 9001:2015 certification, and they have established a robust process for developing custom prototypes, often delivering them in just three weeks. This capability allows them to respond effectively to the specific requirements of their clients, making them a valuable resource in the power electronics industry.

16. Henway Technologies, LTD. PCB Design and Assembly

• Website: henwaytech.com
• Ownership type: Private
• Headquarters: Hudson, Ohio, United States (USA)
• Employee distribution: United States (USA) 62%, Argentina 38%
• Founded year: 2012
• Headcount: 11-50
• LinkedIn: henwaytechnologiesltd

Henway Technologies, LTD. PCB Design and Assembly is a private electronics design firm based in Hudson, Ohio, founded in 2012. The company specializes in custom PCB engineering and manufacturing, providing a comprehensive suite of services that includes schematic design, PCB layout, firmware development, and PCB assembly. Henway caters primarily to businesses across various sectors, including defense, automotive, and telecommunications, demonstrating their adaptability to different industry requirements. Their business model emphasizes tailored solutions, ensuring that they meet the unique needs of each client. With a team of skilled engineers and state-of-the-art equipment, Henway is well-equipped to handle projects ranging from quick-turn prototypes to large-scale production runs. They have successfully completed over 750 projects, showcasing their capability and commitment to quality. Henway's involvement in high-power designs, including custom switching power supplies and motor controllers, further solidifies their position in the power electronics industry.

17. Watteredge LLC

• Website: watteredge.com
• Ownership type: Private
• Headquarters: Avon Lake, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1954
• Headcount: 51-200
• LinkedIn: watteredge-llc

Watteredge LLC, based in Avon Lake, Ohio, has been a manufacturer of high-performance current conductors and industrial products since its founding in 1954. The company specializes in power distribution and transmission solutions, offering a wide array of products including bus bars, power cables, and custom fabricated copper solutions. Watteredge primarily serves businesses in industries such as aerospace and telecommunications, where reliable power distribution is critical. Their engineering capabilities include design and testing, machining, and custom part fabrication, allowing them to meet specific customer needs. Watteredge is also ISO 9001:2015 registered and UL listed, ensuring that their products adhere to high standards of quality and safety. With a workforce of around 61 employees, the company maintains a strong focus on innovation and efficiency in its manufacturing processes.

18. Qualtek Electronics

• Website: qualtekusa.com
• Ownership type: Corporate
• Headquarters: Mentor, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Latest funding: January 2024
• Founded year: 1980
• Headcount: 51-200
• LinkedIn: qualtek-electronics-corp

Qualtek Electronics, based in Mentor, Ohio, has been a key player in the electronic components industry since its founding in 1980. The company specializes in manufacturing and distributing a wide range of products, particularly focusing on power cords, power supplies, and connectors. Their offerings include hospital-grade power cords, which are crucial for medical equipment, as well as various types of connectors that cater to the needs of manufacturers and assembly operations. Qualtek's commitment to providing reliable power solutions has made them a trusted partner for businesses in the electronics sector. The company operates entirely within the United States, ensuring that their products meet local standards and regulations. With a workforce of around 15 employees, Qualtek maintains a focused approach to its operations, emphasizing quality and customer service.

19. Bird Technologies

• Website: birdrf.com
• Ownership type: Private
• Headquarters: Solon, Ohio, United States (USA)
• Founded year: 1942
• Headcount: 201-500
• LinkedIn: bird-technologies

Bird Technologies, founded in 1942 and based in Solon, Ohio, is a private company that specializes in RF (Radio Frequency) test and measurement solutions. With a workforce of approximately 187 employees, Bird Technologies has established itself as a trusted provider of RF wattmeters, power monitors, and analyzers. Their products cater to a variety of sectors, including telecommunications, broadcasting, and medical industries. The company is dedicated to delivering reliable and precise RF solutions, ensuring optimal performance in communication systems. Bird's extensive product line includes RF analyzers, sensors, and calibration standards, which are essential for maintaining the integrity of RF systems. Their commitment to quality and innovation has made them a key player in the RF measurement market, serving both commercial and military applications.

20. IEC Corp

• Website: 4iec.com
• Ownership type: Private
• Headquarters: Medina, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1995
• Headcount: 51-200
• LinkedIn: interactive-engineering-corp

IEC Corp, founded in 1995 and based in Medina, Ohio, is an electronics manufacturer that specializes in the design and production of electronic controls and related components. The company offers a variety of services, including PCB design, wire harness manufacturing, and embedded firmware design. Their clientele ranges from small startups to large international firms, all seeking high-quality electronic solutions. IEC operates manufacturing facilities in the USA and China, with plans for expansion into Mexico. The company prides itself on combining technical excellence in design with flexible manufacturing capabilities, ensuring that each project, whether a prototype or a large order, receives meticulous attention. Their expertise in power electronics is evident in their focus on developing electronic controller boards and related accessories, making them a relevant player in the industry.

21. Winar Connection

• Website: winar.com
• Ownership type: Private
• Headquarters: Richfield, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1982
• Headcount: 51-200
• LinkedIn: winar-connection

Winar Connection, Inc., based in Richfield, Ohio, is a custom cable assembly and wire harness manufacturer established in 1982. The company has carved out a niche in the electrical components industry, focusing on high-quality products tailored to meet the specific needs of various sectors, including motive power and battery charging. With a workforce of 51-200 employees, Winar emphasizes continuous improvement and utilizes advanced technology to enhance efficiency and product quality. Their offerings include power cables, ground cables, battery cables, fast charge cables, wire harnesses, and wire leads. Winar is committed to maintaining high standards, as evidenced by their certifications, including UL, IPC, and ISO 9001:2015. They serve a broad customer base across multiple industries, positioning themselves as a valuable partner in the power electronics market.

22. Captor Corporation

• Website: captorcorp.com
• Ownership type: Private
• Headquarters: Tipp City, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1965
• Headcount: 51-200
• LinkedIn: captor-corporation

Captor Corporation, based in Tipp City, Ohio, has been an engineering solutions provider since its founding in 1965. The company specializes in products designed to mitigate electromagnetic interference (EMI) and ensure electromagnetic compatibility (EMC). Their offerings include a range of custom and standard EMI filters, military electronic assemblies, and comprehensive testing services. Captor primarily serves military, aerospace, and industrial clients, focusing on delivering high-quality and reliable solutions to protect sensitive electronic systems from EMI. With a commitment to engineering excellence, Captor has developed over 10,000 designs, showcasing their capability in custom filter solutions tailored to meet specific application requirements. Their products are crucial in various applications, particularly where electronic systems are exposed to external electromagnetic noise. Captor Corporation is certified to several industry standards, including AS9100D and ISO 9001:2015, underscoring their dedication to quality and compliance in the demanding environments they serve.

23. Keithley Instruments (A Tektronix Company)

• Website: keithley.com
• Ownership type: Corporate
• Headquarters: Cleveland, Ohio, United States (USA)
• Employee distribution: United States (USA) 95%, Other 5%
• Latest funding: September 2010
• Founded year: 1946
• Headcount: 201-500
• LinkedIn: keithley-instruments

Keithley Instruments, a subsidiary of Tektronix, has been a prominent player in the test and measurement equipment industry since its founding in 1946. Based in Cleveland, Ohio, the company focuses on providing high-quality instruments that cater to various sectors, including aerospace, automotive, and medical devices. Their product lineup features advanced tools such as oscilloscopes, digital multimeters, and calibration services, which are crucial for ensuring accurate measurements in product development. Keithley is particularly noted for its source measure units and DC power supplies, which are vital for testing power electronics. The company operates with a commitment to quality and precision, helping clients meet stringent compliance standards and innovate in their respective fields.

Power Electronics Insights: Key Companies in Ohio

Company	Headquarter	Size	Founded	Ownership
Darrah Electric Company	Cleveland, Ohio, United States (USA)	11-50	1960	Family Owned
Process Technology	Willoughby, Ohio, United States (USA)	201-500	1978	Corporate
Nexceris	Lewis Center, Ohio, United States (USA)	51-200	1994	Private
AMETEK Solidstate Controls	Columbus, Ohio, United States (USA)	201-500	1962	Corporate
Dm Associates	Westerville, Ohio, United States (USA)	1-10	1967	Private
Weastec, Inc.	Hillsboro, Ohio, United States (USA)	201-500	1988	Private
Energy Technologies, Inc.	Mansfield, Ohio, United States (USA)	51-200	1991	Private
Spang Power Electronics	Mentor, Ohio, United States (USA)	11-50	1953	Family Owned
Delta Systems, Inc.	Streetsboro, Ohio, United States (USA)	201-500	1972	Private
InPower, LLC	Lewis Center, Ohio, United States (USA)	11-50	2002	Corporate
Perfect Electronics	Cleveland, Ohio, United States (USA)	51-200	1978	Private
JF Kilfoil Company	Cincinnati, Ohio, United States (USA)	11-50	1953	Private
R-K Electronic, Inc.	Mason, Ohio, United States (USA)	11-50	1949	Private
Staco Energy Products	Miamisburg, Ohio, United States (USA)	51-200	1937	Private
Ohio Semitronics, Inc.	Hilliard, Ohio, United States (USA)	51-200	1964	Private
Henway Technologies, LTD. PCB Design and Assembly	Hudson, Ohio, United States (USA)	11-50	2012	Private
Watteredge LLC	Avon Lake, Ohio, United States (USA)	51-200	1954	Private
Qualtek Electronics	Mentor, Ohio, United States (USA)	51-200	1980	Corporate
Bird Technologies	Solon, Ohio, United States (USA)	201-500	1942	Private
IEC Corp	Medina, Ohio, United States (USA)	51-200	1995	Private
Winar Connection	Richfield, Ohio, United States (USA)	51-200	1982	Private
Captor Corporation	Tipp City, Ohio, United States (USA)	51-200	1965	Private
Keithley Instruments (A Tektronix Company)	Cleveland, Ohio, United States (USA)	201-500	1946	Corporate

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