poe@pcbamake.com 
Through-hole assembly is the process of inserting component leads into pre-drilled, plated holes on a PCB and soldering them—either by wave soldering, selective soldering, or manual soldering. This method ensures strong mechanical bonds and stable electrical connections.
THT Process Flow
Drilling & Plating – PCB boards are drilled and plated with copper to create conductive holes.Inspection & Cleaning – Quality checks via AOI, X-ray, or manual inspection, followed by cleaning if needed.
Advantages of Through-Hole PCB Assembly
High Mechanical Strength – Leads go through the PCB, making assemblies resistant to stress and vibration.Support for High-Power Components – Ideal for transformers, connectors, and large capacitors.
Applications of THT
Although SMT dominates mass production, THT process remains essential in:
Industrial and power electronics
Automotive electronics
Communication and energy systems
Aerospace and defense applications
Through-hole PCB assembly is not an outdated method, but a complementary process to SMT. For customers looking for reliable and durable PCB assembly solutions, THT remains a critical option. As a professional PCB assembly service provider, we deliver high-quality through-hole and SMT assembly to meet diverse industry needs.
If you have PCB/PCBA/OEM/ODM needs, please contact us, We will reply within 2 hours, and complete the quotation within 4 hours or less upon request.
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