
High-Reliability Through Hole Assembly Services
What is Through Hole Assembly?
Through Hole Assembly (THA) is a method of mounting electronic components onto a PCB by inserting component leads through pre-drilled holes and soldering them on the opposite side. This technique provides strong mechanical bonds and is ideal for high-reliability electronic products.
At First Choice Assembly, we specialise in manual and automated through hole assembly, delivering robust, long-lasting PCB manufacturing solutions for various industries.
Our Through Hole Assembly Capabilities
Manual & Automated Through Hole Assembly
We offer both hand-soldering and wave soldering, depending on component type and production scale.
High-Strength Soldering
Through hole soldering ensures mechanical durability, making it ideal for harsh environments and industrial applications.
Component Placement & Lead Cropping
Our precision component insertion, lead trimming, and soldering techniques ensure high-quality, consistent assembly.
Hybrid PCB Assembly
For designs that require both SMT and through-hole components, our hybrid assembly services provide seamless integration.
Testing & Quality Control
To maintain strict quality standards, we perform:
- Automated Optical Inspection (AOI)
- Functional testing & in-circuit verification
- Custom testing for industry-specific applications
Interested in our Through Hole Assembly services?
Get in touch with our team and we can supply a detailed quote for your project requirements.
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Benefits of Through Hole Assembly
- Superior Mechanical Strength: Ideal for high-vibration environments.
- High Thermal Resistance: Better suited for heat-sensitive applications.
- Enhanced Reliability: Ensures stronger electrical and mechanical connections.
- Cost-Effective for Specific Applications: Perfect for power electronics and industrial equipment.
- Customised Soldering Techniques: Supporting both automated and manual soldering methods.
Industries We Serve
Our through hole assembly solutions support various industries, including:
- Automotive: Engine control units (ECUs), power distribution, and safety systems.
- Medical Devices: Diagnostic equipment, monitoring systems, and imaging devices.
- Industrial Automation: Power control boards, robotics, and heavy-duty electronics.
- Aerospace & Defence: High-reliability PCBs for mission-critical applications.
- Consumer Electronics: Audio equipment, power management systems, and industrial tools.
Why Choose First Choice Assembly for Through Hole Assembly?
With over 30 years of experience, First Choice Assembly is a trusted partner for high-reliability through hole assembly, delivering durability, precision, and cost-effective solutions.
What Sets Us Apart:
- ISO 9001:2015 Certified: Commitment to strict quality control and industry compliance.
- Advanced Soldering Technology: High-precision wave soldering and hand-soldering techniques.
- Comprehensive Testing & Inspection: Guaranteeing flawless assembly and long-term reliability.
- Custom & Scalable Solutions: Tailored through hole PCB assembly for diverse applications.
- Fast & Efficient Delivery: Based in the West Midlands, ensuring quick turnaround times.

Why choose FCA?
From concept to completion
At First Choice Assembly, we support your project every step of the way. Our skilled team collaborates with you to transform initial ideas into detailed designs, ensuring each PCB meets precise specifications. We handle material sourcing, prototyping, and full-scale assembly in-house, guaranteeing quality and efficiency at every stage.
With rigorous testing and lifetime assurance on all products, we deliver reliable solutions that meet industry standards and bring your vision to life.
Full Turnkey Solutions
First Choice Assembly offers complete end-to-end PCB solutions, handling everything from design and sourcing to assembly, ensuring a seamless, efficient process for clients.
Bespoke Design In-House
First Choice Assembly’s expert team provides custom PCB designs tailored to unique project specifications, bringing flexibility and precision to every build.
Lifetime Assurance
Our commitment to value is backed by a lifetime warranty against manufacturing defects. Underscoring our commitment to quality and providing long-term reliability for all manufactured products.
Helping our partners to produce cost effective quality products.
Experience, reliability and quality.
At First Choice Assembly we specialise in the manufacture and assembly of printed circuit boards for a wide range of applications. We manufacture surface mounted printed circuit boards, conventional or hybrid PCBs, all made to our partners specification.
Here at First Choice Assembly we have 30 years experience of PCB assembly and manufacturing and within this time we have dealt with and supplied printed circuit boards to a large number of industry sectors.