Unit Circuits
Unit Circuits provides PCB assembly services for prototypes, low-volume production, and customized electronics manufacturing. Our capabilities include SMT assembly, through-hole assembly, mixed-technology assembly, component sourcing, functional testing, box build, and turnkey PCB assembly. With no MOQ support, fast quotations, and flexible production, we help engineers move from Gerber and BOM files to tested PCB assemblies efficiently.
We pride ourselves on getting it right the first time, every time. Whether you need standard PCB assembly or our fast-turnaround service, we ensure quick delivery and your complete satisfaction.
Let’s take a closer look at what our service offers.
What Is PCB Assembly?
PCB Assembly (PCBA) is the process of mounting and soldering electronic components onto a bare printed circuit board (PCB) to create a fully functional electronic assembly. The process typically includes component sourcing, solder paste printing, SMT (Surface Mount Technology) or Through-Hole Technology (THT) assembly, soldering, inspection, and functional testing. Once all components are installed and verified, the result is a completed PCBA ready for integration into the final electronic product.
Whether you need a prototype or volume production, selecting the right PCB assembly service helps ensure product quality, manufacturing efficiency, and long-term reliability.
Looking for a complete manufacturing solution? Explore our Turnkey PCB Assembly Services for PCB fabrication, component sourcing, assembly, testing, and final delivery.
What PCB Assembly Technologies Do We Support?
At Unit Circuits, we provide multiple PCB assembly technologies to meet different product requirements, production volumes, and design complexities. Our manufacturing capabilities support everything from rapid prototypes to high-volume production while maintaining consistent quality and efficient lead times.
SMT Assembly
SMT (Surface Mount Technology) is the most widely used PCB assembly technology for modern electronic products. Components are mounted directly onto the PCB surface using automated pick-and-place equipment and reflow soldering. SMT enables higher component density, faster production, and excellent manufacturing efficiency, making it ideal for consumer electronics, industrial control systems, communication equipment, and IoT devices.
Learn more about our SMT PCB Assemblysolutions.
Through-Hole Assembly
Through-Hole Technology (THT) is commonly used for components that require strong mechanical connections or must withstand vibration, heat, and repeated stress. Component leads are inserted through drilled holes and soldered to the PCB, providing reliable performance for connectors, transformers, large capacitors, and power electronics.
Learn more about our Through-Hole PCB Assembly services.
Mixed-Technology Assembly
Many electronic products combine SMT and Through-Hole Assembly on the same PCB. Mixed-technology PCB assembly takes advantage of SMT’s high-density layout while using through-hole components where greater mechanical strength or higher power handling is required. This approach is widely used in industrial equipment, automotive electronics, power control systems, and complex embedded products.
Discover our capabilities for Mixed PCB Assembly.
Our PCB Assembly Services
Whether you need a single prototype or complete production, Unit Circuits offers flexible PCB assembly services to support every stage of your project. From rapid prototyping and low-volume manufacturing to full turnkey PCB assembly and box build, our integrated capabilities help simplify production and improve delivery efficiency.
PCBA Products
Our PCB assembly projects cover industrial control, motor control, sensing systems, intelligent machines, communication devices, and customized electronic products. The assemblies shown below demonstrate different board sizes, component densities, connector types, and production requirements. Each project can be customized according to Gerber files, BOM data, testing requirements, and enclosure integration needs.
SMT vs. Through-Hole PCB Assembly
Different PCB assembly technologies are suited to different applications. The following comparison highlights the key differences between SMT and Through-Hole Assembly.
| Comparison Factor | SMT Assembly | Through-Hole Assembly |
|---|---|---|
| Component Placement | Surface-mounted components | Components inserted through drilled holes |
| Best For | Compact, high-density PCB designs | High-strength mechanical connections |
| Production Speed | Faster, highly automated | Slower, more manual operations |
| Assembly Cost | Lower for medium and high volumes | Higher due to additional labor |
| Typical Applications | Consumer electronics, industrial control, IoT devices | Power electronics, connectors, transformers, aerospace equipment |
SMT is generally preferred for compact and high-volume electronic products, while Through-Hole Assembly remains the better choice for applications requiring superior mechanical strength and long-term reliability. Many modern products combine both technologies to balance performance, durability, and manufacturing efficiency.
Your Trusted Partner for PCB Assembly Solutions
Our PCB assembly capabilities support prototypes, low-volume production, and customized manufacturing projects. We provide flexible assembly services covering SMT, through-hole, mixed-technology PCB assembly, component sourcing, inspection, and functional testing to meet different product requirements.
| Capability | Support |
|---|---|
| Order Quantity | No MOQ, prototypes, low-volume production |
| Assembly Technologies | SMT, Through-Hole (THT), Mixed PCB Assembly, BGA |
| PCB Types | Rigid, Flexible, Rigid-Flex, Metal Core (MCPCB), Rogers, Ceramic PCBs |
| Component Packages | 01005, QFN, QFP, BGA, Micro BGA, Fine-Pitch Components |
| Component Sourcing | Full Turnkey, Partial Turnkey, Consigned/Kitted |
| Testing & Inspection | AOI, X-ray Inspection, Functional Testing |
| Soldering Methods | Reflow Soldering, Wave Soldering |
| Repair & Rework | BGA Rework, IR Rework, Component Replacement |
| Production Capacity | Multiple SMT and DIP production lines (based on project requirements) |
Assembly Process
Comprehensive, reliable, performance, validation, automated, functional testing for electronics.
Inspection Process
Pre-assembly, packaging, value, verification, station parts inspection process.
Initial, detailed, verification, quality, First Article Inspection ensures compliance.
Comprehensive, reliable, performance, validation, automated, functional testing for electronics.
Quality Control
Accurate Testing
Real-Time Tracking
FAQs about PCB Assembly
At Unit Circuits, we provide comprehensive PCB assembly services, including surface-mount technology (SMT), through-hole assembly, mixed technology PCB assembly, and complete turnkey solutions. Whether you need prototype assembly or full-scale production, we tailor our services to meet your specific requirements.
Quality is our top priority. We employ rigorous quality control measures throughout the assembly process. From initial inspection of components to final testing, we adhere to industry standards to guarantee reliable and high-performance PCB assemblies.
Absolutely. We specialize in customizable PCB assembly solutions to suit unique design specifications. Our team collaborates closely with you to understand your requirements and deliver tailored solutions that meet your exact needs.
We understand the importance of timely delivery. Our streamlined processes and efficient logistics enable us to offer fast turnaround times without compromising on quality. Whether your project requires expedited delivery or standard timelines, we ensure prompt and reliable service.
Yes, we provide comprehensive testing services to ensure the functionality and reliability of your PCB assemblies. Our testing capabilities include functional testing, in-circuit testing (ICT), and environmental testing, ensuring that your products meet stringent quality standards before shipment.
Getting a quote is easy. Simply contact us through our website or email us at sales@unitcircuits.com with your project specifications. Our team will promptly provide you with a detailed quote tailored to your requirements.
We cater to a diverse range of industries, including but not limited to electrical system design, electronic hardware manufacturing, prototyping, and intelligent machine development. Our adaptable services support various applications across different sectors.
Confidentiality is paramount to us. We uphold strict confidentiality agreements and implement robust security measures to safeguard your intellectual property and project details throughout the assembly process.
Assemble 20 PCBAS for $0