OMNIMATE – Device connectivity and electronics housings

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Weidmüller is a leading international provider of solutions for electrical connectivity,transmission and conditioning of power, signal and data in industrial environments.The company with headquarters in Detmold/Germany develops, produces and sellsproducts in the field of electrical connectivity and electronics all over the world.

Vydal: Weidmüller, s.r.o. Autor: Weidmueller

Strana 623 z 707

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The conventional through hole mounting technique (THT) was increasingly replaced the surface mounting process (SMT).1 mm (with sufficient paste filling) • Stencil hole diameter: 2.6 stencil thickness: 120 180 µm Paste printing low volume the best shape Weidmüller SL-SMT pin headers have short octagonal pins with chamfered pin end keep the required paste volume low possible.8 mm (with insufficient paste filling) Valid for: PCB thickness: 1.5 mm for standard PCBs with 1. The good thermal properties the material are the best for the SMT process and also for lead-free soldering. Due the pin length just 1.6 thickness, optimal solder joint shape can achieved with paste filling approximately 90%. Through hole technology the SMT process The placement process PCBs has undergone a fundamental change recent years. The benefits: • High temperature resistance • Melting point 335 °C • Free from halogens • Low thermal expansion coefficient Remains true even the pitches Weidmüller's makes its male headers SL-SMT from LCP (liquid crystal polymer) prevent undesirable dimensional changes caused water absorption during storage. Weidmüller offers you short pinned SL-SMT male headers with 1.W.5 1.5 mm Soldering terminal diameter: 2.5 length for the following PCB designs: • Mounting hole diameter: 1. THR milestone PCB assembly • Mechanically stable solder connections the PCB • Only one soldering process • Elimination the requirement for hand wave soldering • Automatic assembly • Low production costs Stability new dimension Our male headers are made glass fibre reinforced LCP (liquid crystal polymer).13 Technicalappendix W SMT design-in recommendations The basis for high quality, reliability and efficiency THR technology THR soldering process the processing components that are inserted through hole the PCB and then soldered along with the other SMT components.3 mm • Stencil hole diameter: 2. SMT is now the accepted standard for PCB manufacture. This ensures the highest pitch accuracy, even high pin counts and secures the placement process. This ensures high form stability. . “Design in” “Design out” from experience Standard process parameters assist the design the PCB and the stencils. this method the components themselves must able to withstand the higher temperatures the SMT process