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26 Donnerstag 16 3 2023 Messe-News Rapid PCB prototyping From the circuit board copy router to the picosecond laser Nobody would have thought that a simple mechanical process would one day develop into a technology that can create micrometerfine structures on almost any material Ajourney through time By Malte Borges In 1975 the german engineer Jürgen Seebach developed a mechanical process for the production of printed circuit boards With a circuit board copy router drawings were transferred from paper to a coppercoated circuit board material Further printed circuit boards were created by tracing the contours Later up to six printed circuit boards were manufactured in one step with a system of mechanical articulated arms and milling spindles – assuming a steady hand At the beginning of the 1990s the drive technology was able to position the drive spindle automatically The milling head was motorized in a straight line from one position to another Also today conductive tracks are produced by negative structuring But what has changed since then? • The structuring head travels on curved paths The track width distance is in the range of a few microns • Current LPKF circuit board plotters have up to 20 tool positions and change tools independently • Amilling depth limitation ensures the exact width of the milling contour with conical tools • Vacuum tables hold flexible material securely in place • Afiducial camera recognizes the position of the material and ensures that the individual layers fit exactly even with multilayers • The LPKF CircuitPro system software reads CAD layout data and uses it to generate optimal processes also with the help of comprehensive material and process libraries The range extends from the simple LPKF-Eline to the highperformance systems with a spindle speed of up to 100 000 rpm in an attractive protective housing Mechanical systems achieve a pitch of 100 µm 100 µm track width spacing and a resolution of just Im ag e LP KF PCB prototyping – live at embedded world LPKF shows the portfolio of machines for PCB rapid prototyping live in full action at its stand 100 in hall 2 to demonstrate the complete process Type Function Features LPKF ProtoMat S104 Toplevel mechanical circuit board structuring 20 mechanical tools granite base and a highperformance spindle make this circuit board plotter the ideal assitant for the chemicalfree production of circuit board prototypes LPKF ProtoLaser H4 Acombination of mechanical tools and laser structuring Alaser structures the conductor tracks six mechanical tools drill and mill in one operation LPKF ProtoLaser U4 UV laser system for structuring demanding surfaces Cutting fired ceramics structuring doublesided PET materials separating ceramicfilled materials – the UV laser processes demanding materials with the highest precision LPKF MultiPress S4 With pressure heat and vacuum Complex circuits require more than just the front and back of a PCB The LPKF MultiPress S4 forms up to eightlayer PCBs from individual layers LPKF Contac S4 Compact throughplating Electrical connections between the layers of doublesided PCBs and multilayers – the LPKF Contac S4 combines all stages for safe galvanic throughplating in a compact tabletop device Im ag es L PK F 0 25 µm They meet the challenges for highprecision RF circuits and can also edit single layers for multilayers In the early 1990s laser systems could be used in electronics production to cut solder paste stencils Some times later such compact laser systems were used for PCB prototyping too With special laser configurations new areas of application have emerged in the laboratory UV lasers structure drill and even cut fired ceramics or thin doublesided coated flex materials Picosecond laser sources also process sensitive materials without thermal stress on the substrates The topoftherange system for the electronics laboratory is the LPKF Proto-Laser H4 a highperformance spindle and six tool positions handle the mechanical processing while an integrated laser tool is used for structuring Along way from the first circuit board copy router Today LPKF systems are widely used in PCB prototyping and provide valuable services for demanding development tasks in laboratories hs LPKF Hall 2 Stand 100 – Hard Realtime Support for the Industrial Edge PC T TECHNOLOGIES HE RIGHT SUPPORT IGHT TOOLS THE RIGH THE R … … T … Meet us at HALL 4 #458 ➔ Consolidated Workload architecture to meet all needs – standalone RTOS explicit partitioning and realtime hypervisor ready ➔ Converged Network solutions – ensure time critical network transactions conform to emerging network standards www tenAsys com For more than 25 years the leading RTOS for consolidated workload applications on PC platforms TZ TenAsys Ad EmbW 2023 255x83 print pdf S 1 Format 255 00 x 83 00 mm 27 Feb 2023 15 56 58