Version 1.17 2011-09
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5.2 Using the J2/J3 Board-to-Board Connectors
The board-to-board connector should be a 1mm pitch one-piece part connector. The rec-
ommended manufacture is Samtec with many connector options available; see section
5.2.1.1 and 5.2.1.2.
Chapter 2 contains more information about the connector and the electrical interface.
5.2.1   Suitable One-Piece Part Connectors
5.2.1.1 Single row connectors
These connectors are a single row connector and can be used if only J2 is needed.
This connector has a profile height of 1.65 mm and this has to be considered if components
are to be mounted on the motherboard under the OEM Serial Port Adapter board.
There are alignment pins on the bottom side of the connector.
The connector is available with M2 threaded inserts that fit the mounting holes on the board
(see section 5.1.2). You may screw the OEM Serial Port Adapter board directly into these in-
serts. If you want to have a tighter and more secure mounting, you may use longer screws
and secure it using a nut on the backside of the motherboard.
Another way to mount the module is to use press-fit nuts on the motherboard and skip the
M2 threads on the connector, see section 5.3 for more information about press-fit nuts.
Table 15: Single row connectors from Samtec.
Samtec order
number
Quote
number
Equivalent part
Package
Remark
ASP-118645-01     55392
SEI-120-02-GF-S-AB
Tube
Align pin on bottom
side only
ASP-118645-02     55392
SEI-120-02-GF-S-AB-TR
Tape-n-Reel    Align pin on bottom
side only
ASP-118579-01     55392
SEI-120-02-GF-S-M-AB
Tube
With M2 threaded
inserts and align pin on
bottom side only
ASP-118579-02     55392
SEI-120-02-GF-S-M-AB-TR   Tape-n-Reel    With M2 threaded
inserts and align pin on
bottom side only
NOTE:
When ordering connectors from Samtec or an official Samtec distributor, please use the ASP
order number and refer to the connectBlue global quote number for best price. For technical
questions regarding the Samtec connectors please contact connectBlue or Samtec at
(Scandinavia@samtec.com).
See Figure 7 for more information about the connector and necessary measurements on the
motherboard. The large mounting holes on the motherboard are designed for press-fit nuts
and could be smaller if press-fit nuts are not used. The mounting holes are aligned with the
outer tangent of the 2.3mm mounting holes of the module (see section 5.1.2).