wiecon wiecon PC board connectors and pluggable connectors for the Through Hole Reflow (THR) process Perfect Performance. Today PC boards are our daily companions. Although they often go unnoticed, they are still present in a wide range of devices, simplifying our everyday lives. The broad variety of applications in which they are used requires many different components in a myriad of designs. PC boards provide the connection between the various components located on them. Components are fixed in their positions and can be soldered to the PC board in a variety of manufacturing techniques. Maintaining profitability during the manufacturing process is a continuous challenge. 2 Perfect Performance. Product Range Headquarters: Wieland Electric GmbH Brennerstraße 10 -.14 D-96052 Bamberg Sales and Marketing Center: Wieland Electric GmbH Benzstraße 9 D-96052 Bamberg Phone +49 (9 51) 93 24 -.0 Fax +49 (9 51) 93 24 -.1 98 www.wieland-electric.com www.gesis.com www.gesis-network.com [email protected] Technical Support for PC board connectors and pluggable connectors: Phone +49 (9 51) 93 24-994 Fax +49 (9 51) 93 26-991 [email protected] Industrial technology Solutions for the control cabinet • DIN rail terminal blocks – Screw, spring clamp or IDC connection technology – Wire cross sections up to 240 mm2 – Numerous special functions – Software solutions interfacing to CAE systems • Safety – Safety sensors – Safety relays – Modular safety systems with fieldbus link • PLC and fieldbus components – Standard applications in IP 20 – Increased environmental conditions with railroad and ship approvals • Interface – Coupling relays, semiconductor switches – Measuring and monitoring relays – Timer and switching relays – Analog modules – Passive interfaces – Power supply units – Overvoltage protection Solutions for field applications • Remote automation technology – Power distribution – Fieldbus interfaces and motor starters • Connectors for industrial applications – Square and round connectors – Aluminum or plastic housings – Degree of protection up to IP 68 – Current-carrying capacity up to 100 A – Connectors for hazardous areas – Modular, application specific technology PC board terminals and connectors – Screw or spring clamp connection technology – Spacings: 3.5 mm to 10.16 mm – Reflow or wave soldering process Building and installation technology • Building installation systems – Main power supply connectors IP 20 / IP 65 ... IP 68 – Bus connectors – Combined connectors – Low-voltage connectors – Power distribution system with flat cables – Distribution systems – Bus systems in KNX, LON and radio technology – DIN rail terminal blocks for electrical installations – Overvoltage protection 0144.0 S 07/09

Printing (solder) Automated assembly SMD SMT components During this manufacturing process, the solder tails of the wired components are inserted into holes in the PC board. These holes must first be drilled into the board. The various components (capacitors, transistors, resistors, Integrated Circuits (ICs)) require different preparatory procedures during which the solder tails are bent and cut to fit into the mounting holes in the PC board. The components are usually mounted manually: automated assembly is seldom used. After the components have been prepared and mounted to the board, the next...

ds dh R dh dp R a v wiecon 6 The PC board layout must be designed with the reflow process in mind. This is necessary in order to achieve a high quality and reliable solder joint. Two parameters must be considered when completing the PC board layout. Series Spacing R dP 8113 / 8213 5.0 / 5.08 0.5 mm 2.5 mm 8513 / 8813 3.5 / 3.81 0.35 - 0.4 mm 2.0 mm PC Board Layout Drill Hole Diameter The drill hole diameter must be selected to permit the optimal reflow of the solder from the pin back into the hole (i.e. by capillary action). It should also be sized to facilitate the automated pick and place process,...

350 300 250 200 150 100 50 0 0,0 50,0 100,0 150,0 200,0 250,0 300 wiecon THR solder joint Solder joints made with the THR process differ from those made by other manufacturing processes due to the nature of the process involved. With longer pin lengths (2.5 mm), the solder joints can be inspected and evaluated in accordance with IPC-A-610C. Comparing solder joints from the wave soldering bath with those of THR, the THR connections appear somewhat thinner since the soldering meniscus is less developed. This property must be evaluated from a quality assurance standpoint and defined accordingly....