ERNI Pre-Alignment Modules Provides reliable connection, coding and grounding of plug-in cards ERNI has developed a solution to the dilemma posed by high pin-count hard-metric (HM) connectors and the need for precision connector mating combined with sufficient play between subrack guide rails and printed-circuit board (PCB) cards. The answer is ERNI’s pre-alignment module. According to the IEC 61076-4-101 standard, a 2mm HM connector may have hundreds of contacts. At the same time, the plug-in board connectors and backplane connectors must mate precisely in order to avoid damage. On the other hand, there must be play between the cards and rails to avoid compression stress on the PCB. through a large diameter. A corresponding derating curve is available. This large pin diameter enables a wide capture range of >2mm. The PCB is adequately centred and guided as a result of the appropriate length. The pre-alignment pin with fastening thread is fastened on the backplane and is available for PCB thicknesses of 2.5 to 6mm, and 6 to 8mm. The guide bush is mounted on the daughter card with an M4 or M5 screw. The PCB thickness for the daughter card can be 1.6 to 3.5mm, or 3.5 to 5.5mm. ERNI’s pre-alignment module consists of solid metal guides and new guiding systems that offer several optional functions. For example, there is a kit available with an integrated socket for HM “coding” keys. Thus no coding on the connector side is needed, which offers more room for signal contacts. In addition, there are flattened pre-alignment pins designed to match their mating connector counterparts. Using an octagonal pattern, it will support eight additional coding options. A further reasonable additional option is the electrical contact model. Shielding is low restistant because of gold plating, and therefore allows electric current to flow with 40A at 20°C 1 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Applications 2 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Pre-alignment Modules with Electrical Contact Guide Bush Dimensional Drawing 3,4 15,4 7,8 10,5 20,25 3,9 28,4 Layout 9,8 3,4 Gewindetiefe 7 depth of thread backplane 10,6 9,8 3 -0,2 15,4 0,2 2,34 +0,2 for M5 0,1 19 0,05 +0,5 0,1 (ø4,5 5,5 for M4) 14 7 0,1 6,5 3,1 0,03 daughtercard Ordering Informations Description Part Number Guide bush with thread M4 144641 Kit (Guide bush M4, screw M4x8 with thread locker) 164307 Kit M5 on request. 3 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Guiding Pin Gold Plated Dimensional Drawing B 6-8 4.5 13.8 22.2 1.2 6.5 6.3 144768 9.7 3 7.2 1.5 144741 11.5 22.2 1.2 7.2 3.3 1.8 ø6 C D E F G Ident-Nr. A Part-No. 24 B 1.8 ø6 6-8 2.5- 6 1) 2.5- 6 1) Tochterkarte daughtercard Backplanestärke thickness of backplane 1) unter 3.2mm zusätzlich Unterlegscheibe verwenden. 144741 up to 3.2mm use washer additional. Base Plate 18,45 2,4 Bauteilseite 9,8 8,5 4,3 144742 0,03 0,2 6.5 10,5 3 0,05 144742 24 0,05 12 2,5 144769 Bauteilseite F 8,5 R1 ,5 0,03 0,2 R0 C 4,3 144768 144769 10,5 7,5 G 5 M4 4,2 Layout 6 D component side E component side A Tochterkarte daughtercard 3 8 3 Ordering Informations Description PCB Thickness Guiding pin to fit on backplane without base plate 2.5 - 6.0mm 144768 Guiding pin to fit on backplane without base plate 6.0 - 8.0mm 144769 Guiding pin use only with base plate 2.5 - 6.0mm 144741 Guiding pin use only with base plate 6.0 - 8.0mm 144742 Kit without base plate (Guiding pin, washer, nut M4) 2.5 - 6.0mm 214361 Kit without base plate (Guiding pin, washer, nut M4) 6.0 - 8.0mm 214362 Kit with base plate (Guiding pin, washer, nut M4, base plate) 2.5 - 6.0mm 214363 Kit with base plate (Guiding pin, washer, nut M4, base plate) 6.0 - 8.0mm 214364 Base plate 134734 4 www.ERNI.com/contact/ Part Number Catalog E XXXXXX 01/05 Edition 1 Pre-alignment Modules without Electrical Contact Guide Bush Dimensional Drawing 15,4 3,2 10,5 7,8 Layout Gewindebohrung 4,5 tief thread drilling 4,5 deep 9,8 +0,2 19 0,05 14 for M5 for M4) 0,1 0,1 (ø4,5 5,5 +0,5 7 9,8 9,8 0,1 15,4 18 3 -0,2 0,2 backplane 3,1 0,03 daughtercard Ordering Informations Description Part Number Guide bush with thread M4 154058 Guide bush with thread M5 134726 Kit for PCB thickness 1.5 - 2.0mm (Guide bush M5, screw M5x6, washer) 144127 Kit for PCB thickness 2.0 - 4.5mm (Guide bush M5, screw M5x8, washer) 144128 Kit M4 on request. 5 www.ERNI.com/contact/ Catalog E XXXXXX 01/16 Edition 1a Guiding Pin Dimensional Drawing A B E 7,5 G 5 M4 134733 9.7 3 7.2 1.5 134732 11.5 22.2 1.2 7.2 3.3 1.8 ø6 C D E F G Ident-Nr. Part-No. A 24 B 1.8 ø6 6-8 0,2 Tochterkarte 2.5- 6 1) 2.5- 6 1) daughtercard Backplanestärke 144077 thickness of backplane 4,3 134732 1) unter 3.2mm zusätzlich Unterlegscheibe verwenden. Bauteilseite up to 3.2mm use washer additional. 0,03 0,2 6.3 10,5 6.5 0,05 1.2 8,5 13.8 22.2 0,05 4.5 2,5 6.5 10,5 6-8 3 component side 144077 24 component side R1 ,5 F 12 0,03 R0 C 144078 4,3 144078 134733 Bauteilseite 4,2 Layout 6 D Tochterkarte daughtercard Ordering Informations Description PCB Thickness Guiding pin to fit on backplane without base plate 2.5 - 6.0mm 134733 Guiding pin to fit on backplane without base plate 6.0 - 8.0mm 144078 Guiding pin use only with base plate 2.5 - 6.0mm 134732 Guiding pin use only with base plate 6.0 - 8.0mm 144077 Kit without base plate (Guiding pin, washer, nut M4) 2.5 - 6.0mm 144370 Kit without base plate (Guiding pin, washer, nut M4) 6.0 - 8.0mm 144371 Kit with base plate (Guiding pin, washer, nut M4, base plate) 2.5 - 6.0mm 144131 Kit with base plate (Guiding pin, washer, nut M4, base plate) 6.0 - 8.0mm 144132 Base plate 134734 Additional versions upon request. 6 www.ERNI.com/contact/ Part Number Catalog E XXXXXX 01/05 Edition 1 Pre-alignment Modules with Coding Guide Bush Dimensional Drawing Layout backplane A 9,8 +0,2 for M5 19 0,1 0,1 5,5 3,1 0,03 daughtercard 9,8 7,8 (ø4,5 18 for M4) thread drilling M5; 4,5 deep 9,8 0,05 14 Gewindebohrung M5; 4,5 tief +0,5 7 0,1 3 -0,2 15,4 0,2 15,4 3,2 10,5 A Ordering Informations Description 1) Component Part Number Kit1) Part Number Guide bush with coding 0°/360° 194548 204399 Guide bush with coding 45° 194547 204398 Guide bush with coding 90° 194546 204397 Guide bush with coding 135° 194553 204404 Guide bush with coding 180° 194552 204403 Guide bush with coding 225° 194551 204402 Guide bush with coding 270° 194550 204401 Guide bush with coding 315° 194549 204400 Kit with screw M5x6 and washer. 7 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Guiding Pin Dimensional Drawing Layout 24 0,05 0,2 8,5 10,5 2,5 Bauteilseite 5 M4 4,2 0,03 +0,05 4,3 4 component side A 7,5 6,5 Tochterkarte daughtercard Base Plate 8,5 8 2,4 18,45 9,8 3 3 Ordering Informations Description Part Number Guiding pin 194543 Base plate 194542 Kit (Guiding pin, base plate, washer, nut M4) 204395 8 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Pre-alignment Modules Inverse Pin with Guide Bush Dimensional Drawing 21 1 3,2 15,4 9,8 34,6 M5; Tiefe/ deep 4.5 50,6 0,05 14 5,5 7 9,8 0,1 3 -0,2 Layout 18 3,1 0,03 Ordering Informations Description Part Number Kit (Pin with guide bush) 204219 Piece parts on request. 9 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Coding Keys Coding Key Color Coding Keys for Guide Bush Part Number Coding Key Color Part Number Pastel Orange RAL 2003 Fincke 00233197 043342 Pastel Orange RAL 2003 Fincke 00233197 043332 Steel Blue RAL 5011 Fincke 00251197 043343 Steel Blue RAL 5011 Fincke 00251197 043333 Slate Gray RAL 7015 Fincke 00235197 043344 Slate Gray RAL 7015 Fincke 00235197 043334 Cadmium Yellow RAL 1021 Fincke 00252197 043345 Cadmium Yellow RAL 1021 Fincke 00252197 043335 Reseda Green RAL 6011 Fincke 00237197 043346 Reseda Green RAL 6011 Fincke 00237197 043336 Brilliant Blue RAL 5007 Fincke 00245197 043347 Brilliant Blue RAL 5007 Fincke 00245197 043337 Blue/Lilac RAL 4005 Fincke 00246197 043348 Blue/Lilac RAL 4005 Fincke 00246197 043338 Ocher Yellow RAL 1024 Fincke 00313197 043349 Ocher Yellow RAL 1024 Fincke 00313197 043339 Strawberry Red RAL 3018 Fincke 00312197 043350 Strawberry Red RAL 3018 Fincke 00312197 043340 Hazel RAL 8011 Fincke 00272197 043351 Hazel RAL 8011 Fincke 00272197 043341 10 www.ERNI.com/contact/ Catalog E XXXXXX 01/05 Edition 1 Printed in Germany · Subject to modification without prior notice. Coding Keys for Base Plate