www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1
1
ERNI D-Sub Connectors
for THR (through hole reflow) Process
Printed in Germany · Subject to modification without prior notice.
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, solde-
ring 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.
D-Sub connectors are available with or without assembly force, depending on the type of assembly process (automa-
tic or manual).
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
www.ERNI.com/contact/ Catalog E XXXXXX 06/05 Edition 1
2
Layout Recommendations
Standard Right Angle D-Sub Connector
Layout, drilling plan
Cu plating
Paste printing stencil
2,54
1,27
1,37 9/15 pol.
2,74 9/15 pol.
11,7max.
3,2
1
±0,05
1,38 25/37 pol.
2,76 25/37 pol.
±0,1
5,5
1,5
2,3
1,37 9/15 pol.
2,54
1,27
1,6
2,74 9/15 pol.
4,32
3,48
2,76 25/37 pol.
1,38 25/37 pol.
2,54
1,27
1,37 9/15 pol.
2,74 9/15 pol.
3,8
1,6
2,76 25/37 pol.
1,38 25/37 pol.