Assembly:

Through-Hole Assembly

Overview

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Through-hole technology (THT) is used for bigger and more complicated component assembly. For efficient mounting of THT components, we use an automatic selective soldering machine ERSA Versaflow. The operator places the THT components on the board via a designated scheme and enters the PCB into a board loader. The process begins with the preheating of the PCB to a specific temperature in order to prepare it for soldering. This helps to remove any moisture or contaminants from the surface of the PCB board and makes the solder more flowable. Next, a flux solution is applied to the PCB to help the solder flow and adhere to the surface. The solder is then applied to the PCB using a nozzle or soldering iron that is precisely controlled to apply the solder only to the desired soldering points. Once the solder has been applied, the PCB board is cooled to solidify it. Finally, the PCB is cleaned to remove any excess flux or solder. This process is typically automated and can be used to join a wide range of components, including through-hole and surface mount components, to the PCB.

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Manufacturing Metrics

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Pin Count Capability

Unlimited

Wave Soldering Speed

1.2 m/min

Selective Soldering Support

Yes

Operator Inspection

IPC certified

Conformal Coating

Optional

PCB Thickness Range

0.8–3.2 mm

Through-Hole Assembly

Manual Soldering

Some of the components need to be manually soldered because they cannot be mounted on automated SMT or THT lines. For smaller batches or more difficult component assembly, this solution is used. We have soldering stations for this purpose, where our employees can solder the circuit boards with different components, such as heat shields, connectors, and others. Since manual soldering quality relies on the knowledge of the specialist, we ensure that the specialists are properly trained. For that, we employ IPC (Institute of Printed Circuits) standards. We have an electronics manufacturing academy, where specialists with IPC trainer certificates acquaint them with the process and prepare them for technology improvements if needed.