QCircuits, Inc.
QCircuits, Inc.
🇺🇸 United States, Illinois
195311-50 peopleManufacturerQCircuits, Inc. is an American electronic contract manufacturer and circuit board specialist headquartered in Rolling Meadows, Illinois. Founded in 1953 as Beltronics Corporation, the company has over 70 years of experience in the electronics industry, operating production facilities in Flora and Elk Grove Village, Illinois. As a dedicated domestic manufacturer, QCircuits emphasizes "Assembled in the USA" quality across its diverse service portfolio, which includes SMT and through-hole PCB assembly, electro-mechanical assembly, and full box build services.
The company serves as an ODM and contract manufacturer for a wide range of sectors, including aerospace, medical electronics, industrial controls, automotive, and telecommunications. Their technical capabilities extend to high-density PCB layouts, advanced packaging for AI and EV battery manufacturing, and specialized components such as RF limiters, CPO Ethernet switches, and radio modules. Additionally, QCircuits provides comprehensive engineering support, CNC machining, injection molding, and custom magnetics, including coil winding and transformer production.
With a workforce of 11 to 50 experienced professionals and IPC620 certification, QCircuits supports clients from initial prototyping and design finalization through to high-volume production. Their product expertise also encompasses industrial control circuitry, infrared proximity sensors, time delay relays, and uninterruptible power solutions, catering to both emerging technology start-ups and established global corporations.
OEM manufacturerOffers OEM services for customized brand manufacturing.
ODM manufacturerProvides ODM design and manufacturing solutions.
Small batch productionSupports small or flexible order quantities.
Product customizationOffers full customization for design and features.
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Customers
SHREE MARUTI PAPER AND CHEMICAL INDUSTRIAL
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Established brand
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Product customization
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Description
Sierra Circuits, Inc. is a premier American manufacturer and assembler of high-technology printed circuit boards (PCBs), headquartered in Sunnyvale, California. Founded in 1986, the company operates a 70,000 sq. ft. manufacturing campus and is recognized as a minority- and woman-owned business. Sierra Circuits specializes in end-to-end solutions, including PCB fabrication, assembly, and component sourcing, with a strong emphasis on 100% Made in USA production and fast-turnaround prototypes.
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Sierra Circuits maintains rigorous quality standards, holding certifications including ISO 9001:2015, ISO 13485:2016 for medical devices, AS9100D for aerospace, and MIL-PRF-31032. They are also ITAR registered and NIST certified, serving high-profile clients across the automotive, healthcare, and defense sectors, including NASA, Boeing, and Lockheed Martin. With a workforce of over 500 employees, the company integrates advanced proprietary design tools and engineering support to assist clients from initial layout through mass production.
RF / MW PCB Manufacturing and Assembly
HDI PCBs
Rigid PCBs
Controlled Impedance
Online PCB Manufacturing
Microelectronics PCBs
Rigid PCBs
Turnkey PRO
Microelectronics PCBs
PCB Assembly
PCB Mass Production
HDI PCBs
Qflex Inc
🇺🇸 United States
199811-50 peopleManufacturerEstablished brand
OEM manufacturer
Product customization
High-tech enterprise
Shipments
5
Key customer
AVERY DENNISON
Description
Qflex Inc is an award-winning manufacturer of flexible printed circuit boards and interconnect systems based in Fullerton, California. Established in 1998, the company has built a reputation as a leading innovator in the flexible circuit industry, specializing in highly complex designs that push technological boundaries. Their expertise is demonstrated by their ability to manufacture advanced solutions such as 88-layer flex PCBs, rigid-flex circuits, and multilayer flexible circuits, which far exceed standard industry conductive layer counts.
Operating from a facility equipped with HEPA-filtered clean rooms, Qflex Inc provides a comprehensive range of services including in-house R&D, rapid prototyping, and medium-volume production. Their diverse product portfolio includes Electro Static Chucks (ESC), magnetometer flex harnesses, cable assemblies, and ultra-low radioactivity cables. The company is ISO certified and holds several patents for specialized products and manufacturing processes.
As a woman-owned and minority-owned small disadvantaged business, Qflex Inc is a key supplier to high-stakes industries such as aerospace, defense, medical, and telecommunications. Their prestigious client base includes NASA, JPL, Boeing, SpaceX, Lockheed Martin, and Northrop Grumman, as well as various branches of the U.S. Department of Defense and Department of Energy. With a focus on engineering excellence and immediate response, they provide critical components for spacecraft, aircraft, and advanced electronic controls.
Electro Static Chucks (ESC)
