ERNI D-Sub Connectors for THR (through hole reflow) Process General The THR method is an attractive option for processing wired components during SMT assembly without leaving the production line. The new ERNI D-Sub connectors are reflow/lead-free process compatible and free of halogen. Temperatures greater than 260 °C can be sustained without exhibiting any visual or functional impairment. Wired D-Sub connectors are automatically or manually placed in plated-through holes of a pcb. Prior to this, soldering paste required for the solder joints is positioned in these holes via paste printing. What follows is the traditional process of soldering in the reflow or vapor phase oven. It is practical to carry out a soldering paste calculation before converting to the THR method. Doing this will allow you to estimate in advance as to whether the existing solder for the given geometric data will be able to meet the required quality standards. Clip with and without assembly force 1 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Printed in Germany · Subject to modification without prior notice. D-Sub connectors are available with or without assembly force, depending on the type of assembly process (automatic or manual). Layout Recommendations Standard Right Angle D-Sub Connector 2,54 1 ±0,05 1,27 Layout, drilling plan 11,7max. 1,37 9/15 pol. 1,38 25/37 pol. 3,2 ±0,1 2,74 9/15 pol. 2,76 25/37 pol. 2,54 1,27 1,6 Cu plating 1,37 9/15 pol. 1,38 25/37 pol. 3,8 2,74 9/15 pol. 2,76 25/37 pol. Paste printing stencil 2,54 2,3 3,48 1,27 1,6 1,5 4,32 5,5 1,37 9/15 pol. 1,38 25/37 pol. 2,74 9/15 pol. 2,76 25/37 pol. 2 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Eurostyle Right Angle D-Sub Connector 7,6 max. 2,54 1 ±0,05 1,27 Layout, drilling plan 1,37 9/15 pol. 1,38 25/37 pol. 2,74 9/15 pol. 2,76 25/37 pol. 3,2 ±0,1 2,54 1,27 1,6 Cu plating 1,37 9/15 pol. 1,38 25/37 pol. 3,8 2,74 9/15 pol. 2,76 25/37 pol. Paste printing stencil 2,54 2,3 3,48 1,27 1,6 1,5 1,37 4,32 5,5 9/15 pol. 1,38 25/37 pol. 2,74 9/15 pol. 2,76 25/37 pol. 3 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Vertical D-Sub Connector 2,54 1 ±0,05 1,27 Layout, drilling plan 1,37 9/15 pol. 1,38 25/37 pol. 3,2 ±0,1 2,74 9/15 pol. 2,76 25/37 pol. 2,54 1,27 1,6 Cu plating 1,37 9/15 pol. 1,38 25/37 pol. 3,8 2,74 9/15 pol. 2,76 25/37 pol. Paste printing stencil 2,54 2,3 3,476 1,27 1,6 1,5 1,37 4,32 5,5 9/15 pol. 1,38 25/37 pol. 2,74 9/15 pol. 2,76 25/37 pol. 4 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Solder Paste Printing In addition to other criteria, the placement of a sufficient, reproducible solder paste volume has turned out to be the main criterion for ensuring the quality of the solder joint as per IPC-A610. The solder volume is determined by the stencil thickness and hole diameter as well as by the level of paste in the plated-through hole. Solder paste printing component side view Solder paste printing soldering side view In order to avoid paste displacement and solder balls, it is advisable to use stencil apertures that are 10 % smaller than the pads. The best results are achieved with a paste fill level of 100 %. This can be realized when a closed squeegee system is used. A double print in conjunction with an open squeegee system also can produce satisfactory fill levels. Solder paste printing stencil: Stencil thickness (steel) Stencil aperture 150 µm – 200 µm see drawings (page 2-4) Solder paste SnPb or SnAgCu (lead-free) Solder proportion Paste type 3 solder ball size ca. 50 % 20 – 40 µm Required solder paste volume (based on nominal drill-hole diameter 1.0 mm) Bei unterschiedlichen Pastenfüllgraden / Bohrungsdurchmesser 75 % solder joint ca. 1.2 mm3 ca. 1.5 mm3 Required paste volume Achievable paste volume 100% solder joint ca. 1.45 mm3 ca. 1.5 mm3 Achievable solder joint form 5 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Relevant data for automatic assembly Weight (gram) Standard Right Angle D-Sub Connectors Female without Female with nut Female with bolt Male without Male with nut Male with bolt 9 pin 6.70 6.99 9.34 6.09 6.36 8.52 15 pin 8.50 8.79 11.02 7.65 7.90 10.23 25 pin 11.52 11.84 14.00 9.96 10.08 12.33 37 pin 15.03 15.27 15.99 12.85 13.00 15.39 9 pin 5.70 5.85 8.40 5.23 5.26 7.68 15 pin 7.41 7.54 9,79 6.42 6.50 9.02 25 pin 9.99 10.24 12.46 8.33 8.60 10.69 37 pin 13.19 13.44 15.69 10.86 11.06 13.22 9 pin 4.31 4.58 5.45 3.57 4.00 4.73 15 pin 5.80 6.07 7.01 4.94 5.21 5.69 25 pin 8.21 8.49 9.09 6.41 6.69 7.29 37 pin 10.87 11.15 11.72 10.62 10.89 11.51 Eurostyle Right Angle D-Sub Connectors Female without Female with nut Female with bolt Male without Male with nut Male with bolt Vertical D-Sub Connectors Female without Female with nut Female with bolt Male without Male with nut Male with bolt Pick and place point see connector datasheet Packaging Tape and Reel Tray dimensions see datasheet dimensions see datasheet Reflow data Common temperature profile Temperature stability EN 61760-1 min. 3 x reflow solder (Peaktemp. 260 °C) 6 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1 Soldering results Soldering conditions: 1.6 mm PCB thickness , D-Sub THR Part number: 154204 Closed squeegee system 150µm stencil thickness Vapor Phase soldered at 230 °C Cross Section Signalpin Cross Section Clip with Assembly Force 7 www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1