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THT Assembly

PCB assembly from 100% Swiss production

THT technology components are still irreplaceable in some areas. THT assembly is of great importance, whether for heavy mechanical loads or for power semiconductors and switches.

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THT assembly at Schaffner GmbH

Once the assemblies have completed SMD production, including optical SMD inspection in the laboratory, they are further processed in our in-house THT department. We can use a wave soldering system or a selective system for the soldering process. On the wave soldering system, the flux is first sprayed over the entire surface of the circuit board. An infrared preheater ensures stress-free and homogeneous heating before soldering, after which the circuit boards pass over the solder wave. The solder wave offers a higher throughput and is therefore the more cost-effective option.

In selective soldering, the flux is applied with pinpoint accuracy, and after full-surface preheating, the pre-programmed soldering points are individually traversed, similar to manual soldering.

What is THT assembly?

THT assembly means 'Through-Hole Technology' and stands for a type of assembly with electronic components that are equipped with wires. In contrast to SMD production (surface-mounted device), THT assembly is a push-fit assembly. The individual components are equipped with wire connections and are inserted through the contact holes of the PCB to be assembled. Various types of soldering, such as hand soldering, wave soldering or selective soldering, are suitable for connecting the components to the conductor track. Other possible areas of application include power electronics and handmade devices, such as those produced by craftsmen or hobby electronics engineers. For THT assembly, we have been relying on the support of H2D Electronic AG, the specialist for device construction and cable assembly, for many years.

SMD or THT assembly? The advantages and disadvantages of both methods

Are you planning a project and perhaps wondering whether SMD production or THT assembly is more suitable? Opinions in the industry are divided, but in fact SMD assembly has already replaced THT assembly in many cases, as it does offer some advantages over push-fit assembly. With SMD production, the components do not have to be soldered on the opposite side of the PCB. This means that the board can be assembled much more densely and the opposite side serves as an additional surface for components. The production of the devices is therefore more efficient and significantly less cost-intensive. The devices are also lighter, as there are no connecting wires and smaller components can be used. The distances between the components are smaller and the conductor paths are shortened, which improves the high-frequency properties.

SMD or THT assembly? The advantages and disadvantages of both methods

Schaffner GmbH in partnership with H2D Elektronik is your contact for SMD and THT assembly. We have been active in electronics production since 1992 and have extensive technical know-how. In addition, we advise you as a customer on production issues, offer a repair service and various product tests in the laboratory. Our aim is to produce durable products that will impress our customers in the long term. Do you have any questions about our range? We will be happy to provide you with information at any time by e-mail or telephone.

Contact details

Schaffner GmbH
Rickenbacherstrasse 29
CH - 4460 Gelterkinden

  061 985 94 94
  061 985 94 98

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