Through-hole assembly remains the gold standard for applications demanding exceptional mechanical durability and long-term reliability. Foxtronics EMS leverages both manual and automated wave and selective soldering techniques to ensure every component is firmly anchored and capable of withstanding harsh environments ideal for defense systems, automotive controls, and industrial machinery.
Our U.S.-based PCBA manufacturing facilities combine IPC-qualified technicians, precision tooling, and robust process controls to deliver consistent solder joint integrity across mixed-technology boards. Whether you require high-mix, low-volume runs or larger production batches, our flexible workflows adapt to your volume, complexity, and regulatory requirements, without sacrificing quality or lead time.
From initial DFM reviews to final inspection and functional testing, our through-hole PCB assembly services integrate seamlessly with SMT, box build, and turnkey PCBA solutions. By maintaining tight traceability and adhering to industry standards such as IPC-610 and J-STD-001, we help you achieve superior performance and compliance for mission-critical electronic products.
Through-hole assembly is a proven PCB assembly method where components with long leads are inserted into drilled holes and soldered to pads on the opposite side of the board. Known for its strong mechanical bonds, this process is ideal for high-stress, high-heat, or load-bearing applications.
Components may be axial or radial and are assembled using manual, wave, or selective soldering, depending on complexity and production needs. While surface-mount technology dominates compact designs, through-hole assembly remains critical for sectors like aerospace, defense, industrial equipment, and power electronics. At Foxtronics EMS, we pair decades of hands-on experience with advanced equipment to deliver reliable, high-quality results.
We deliver mechanically strong, reliable solder joints tailored for demanding environments. Combining manual expertise with automated wave and selective soldering, our processes adapt to your board complexity, production volume, and compliance requirements.
Precision through-hole assembly demands more than just soldering; it requires advanced equipment, IPC-certified processes, and expert-level precision. Foxtronics EMS brings all three together to deliver mechanically secure, high-reliability PCB assemblies for demanding and performance-intensive applications.
Fully automated wave soldering lines deliver consistent, high-quality joints for medium to high-volume builds. Supports both leaded and RoHS-compliant processes.
Ideal for densely populated PCBs and heat-sensitive components. Our selective soldering systems enable precise soldering where wave soldering isn’t feasible.
IPC-certified technicians perform meticulous hand soldering for low-volume, high-complexity, or high-reliability applications.
Expertise in soldering plated-through holes on both sides of the board, supporting advanced architectures and enhanced durability.
Automated and semi-automated systems ensure consistent lead shaping and proper fit for optimal solderability.
Integrated inspection tools validate solder joints and component placement, including hidden and bottom-terminated leads.
Protective coatings for assemblies exposed to moisture, dust, or vibration—ideal for automotive, aerospace, and industrial electronics.
System-level integration, including wiring, connectors, enclosures, and final assembly, reducing vendor dependencies and lead times.
All assemblies meet or exceed Class II and III workmanship standards for quality, reliability, and process control.
Full-service solutions covering design, procurement, assembly, and testing for streamlined production.
We prioritize reliability and performance in every build. Our extensive testing services identify and resolve potential issues early, ensuring each assembly meets the highest quality standards before shipping.
We uphold strict quality, safety, and compliance standards backed by advanced inspections, thorough testing, and globally recognized certifications to ensure product reliability and performance.
Every product undergoes rigorous in-line inspections, functional testing, and quality control processes at every stage of production to guarantee consistency and precision.
Foxtronics EMS maintains internationally recognized certifications that reflect our dedication to quality management and regulatory compliance across multiple industries:
Our portfolio features high-reliability through-hole PCB assemblies built for demanding sectors. From single- and double-sided boards to mixed-technology builds, each assembly showcases our focus on precise soldering, quality craftsmanship, and consistent performance.
Foxtronics EMS supports the full product development lifecycle, from fast-turn prototypes to scalable production. Whether you’re launching a new design or refining an existing one, our agile manufacturing model makes it easy to move from low-volume pilot runs to full-scale production with speed and consistency.
Our flexible assembly lines accommodate a wide range of production needs, including engineering prototypes, small-batch builds, high-mix, and high-volume runs. We deliver consistent quality with minimal lead times at every stage.
Our agile model supports:
We serve a diverse range of sectors with precision-built systems tailored to their unique challenges.
Explore All IndustriesWith decades of experience and industry certifications, Foxtronics EMS supports leading innovators in demanding sectors, delivering reliable PCB assembly for mission-critical products. Our certified quality systems, advanced manufacturing, and engineering expertise ensure we meet the unique technical requirements of every industry we serve.
Foxtronics EMS combines precision, reliability, and scalability to deliver high-performance PCB assembly solutions. With decades of experience, advanced facilities, and engineering expertise, we add value across every stage of your product’s lifecycle.
With over 116 years of combined experience, Foxtronics EMS serves industries such as aerospace, medical, industrial, and automotive. Our AS9100, ISO, and ITAR certifications ensure compliance with the highest quality and regulatory standards, allowing us to meet the demands of mission-critical applications.
From initial design to final delivery, we offer complete lifecycle support. Our in-house engineering team provides DFM and early design consultation to optimize manufacturability, reduce risk, and accelerate time-to-market—ensuring a smooth transition from concept to scalable production.
Foxtronics EMS provides fully managed turnkey solutions, including component sourcing, SMT and through-hole assembly, box builds, and testing. This approach simplifies supply chains, reduces vendor dependency, and ensures consistent quality at every stage.
Our state-of-the-art facilities are designed to handle complex PCB assemblies with exceptional precision and reliability. Automated systems, high-speed SMT lines, and rigorous process controls ensure consistent quality and scalability, supporting the most intricate and demanding production requirements.
Quality assurance is built into every step of our process. We utilize AOI, X-ray inspection, in-circuit, and functional testing to detect defects early and ensure long-term reliability. Our inspection protocols align with IPC and AS9100 industry standards.
With flexible production and streamlined workflows, we offer rapid prototyping and efficient scaling for diverse production needs. Whether for low-volume prototypes or high-volume runs, our responsive team ensures fast, reliable delivery without sacrificing quality.
Our production floors are purpose-built for through-hole assembly, with selective and wave soldering lines, lead forming equipment, and ESD-safe manual stations. Backed by IPC-certified technicians and RoHS-compliant processes, we ensure consistent quality across every build.
Get answers to common questions about through-hole PCB assembly, its benefits, and how Foxtronics EMS supports reliable, high-quality builds across industries.
Through-hole assembly inserts component leads into drilled holes on a printed circuit board (PCB), creating stronger mechanical bonds than SMT, which mounts components directly on the surface.
Yes, we provide both leaded and RoHS-compliant soldering using wave and selective soldering systems tailored to regulatory requirements.
We handle a wide range of through-hole components, including axial and radial leads, connectors, switches, relays, power components, and transformers across both single-sided and double-sided PCB designs.
Our quality control includes automated and manual inspections, precision selective soldering, IPC-A-610 Class 2/3 standards, and trained technicians. We also use AOI, functional testing, and ionic contamination testing to ensure solder joint integrity and reliability.
Yes, we offer comprehensive testing services, including in-circuit testing (ICT), functional testing, flying probe, boundary scan, and burn-in testing, ensuring that every assembly meets your electrical and functional specifications.
Absolutely. We specialize in mixed-technology assemblies that combine both SMT and through-hole components on the same board, ensuring proper sequencing, soldering techniques, and thermal profiles.
