WHERE COMPLEXITY MEETS CERTAINTY
Built in Texas. Trusted for High-Reliability Manufacturing for Over 55 Years.
Lonestar EMS delivers precision Printed Circuit Board Assembly, System Integration and Box Build services all fully tested for our OEM customers building mission-critical electronics in the Aerospace, Defense, Industrial, Energy, and Emergency Communications markets.
Founded in 1971, we combine disciplined process control, engineering collaboration and our documented Quality Management System to help customers seamlessly scale production with confidence without sacrificing reliability, traceability, or responsiveness.
Our customers choose Lonestar because we operate like a true manufacturing partner: agile, accountable, and built to support high-mix, high-complexity programs from prototype through production.
Built in texas. Trusted worldwide.
Precision we can prove
Lonestar EMS has the certifications, equipment and team to ensure adherence to the most stringent industry standards in communications, defense and medical device industries.
SCALABLE, SYSTEM-LEVEL INTEGRATION
From schematic review to box build, Lonestar EMS provides a seamless path from concept to sustained production. Delivering efficiency, consistency and audit-ready traceability drives successful product maturation.
RELIABILITY AND AGILITY
With new leadership, data-driven workflows and expanded engineering resources, Lonestar EMS leads the way with reliable solutions built on close collaboration.
Military
Lonestar EMS provides engineering, printed circuit board design and surface mount technology solutions tailored to the critical needs of military and defense industries.
Medical
Certified to manufacture non-invasive medical electronics, Lonestar EMS supports critical healthcare innovations with expertise in PCB design, functional testing and lifecycle management.
Space & Satellite
With advanced engineering expertise, Lonestar EMS offers reliable manufacturing solutions for the unique demands of space and satellite applications.
Industrial
We create tailored solutions for industrial markets, specializing in customized design, tooling, PCB assembly, box builds and testing services.
Oil & Gas
Supporting the oil and gas sector, Lonestar EMS offers durable, high-performance electronics with end-to-end lifecycle support including printed circuit board assembly and box builds.
High Reliability
By reducing complexity and risk, our high-reliability solutions ensure quality and dependability in every project, whether we are designing and manufacturing internal circuitry or completing the final box build.
Emerging Tech
Partner with us to bring new technologies to life with expert design, engineering and manufacturing support. From PCBAs to product box builds, we are ready to move your innovation forward.
Our Expertise
Industrial Electronics
Providing robust and reliable electronic solutions tailored for the demanding industrial sector.
Communications Technology
Advanced manufacturing services for the dynamic needs of the communications and audio-visual markets.
News
SASinno Americas Installs Ant-i2 at Circuitronics
Sasinno Americas is proud to announce the successful installation of its new Ant-i2 Selective Soldering machine at Lonestar EMS, LLC dba Circuitronics, a premier electronic manufacturing services (EMS) provider based in Texas. This installation marks a significant enhancement in Lonestar EMS, LLC dba Circuitronics’ production capabilities, enabling faster and more efficient assembly processes.
Lonestar EMS, LLC dba Circuitronics, Inc. Enhances Operational Efficiency with the Installation of VJ Electronics' XQuik II Plus Component Counter
June 2024 — VJ Electronix, Inc., the leader in rework technologies and global provider of advanced X-ray inspection and component counting systems, proudly announced the recent installation of the XQuik II Plus component counter into Lonestar EMS, LLC dba Circuitronics, Inc. This new addition to their inventory management infrastructure underscores its commitment to employing state-of-the-art technology to boost efficiency and accuracy.
Elevate your Electronics Manufacturing
Access the tailored service, exceptional expertise and trusted reliability of Lonestar EMS.










