The carrier card to SOM interface
requires a 5 mm (height) mechanical stand-off.
In cases where there is an expectation that the SOM might be removed from the carrier card, the recommended solution is to use the following Samtec JSOM. The Samtec JSOM-0515-01 standoffs require a press-fit process to install them onto the PCB. The JSOM standoff press-fit recommended parameters are shown the following table and the press profile is shown in the following diagram.
| Press Parameter | Setting | Unit | Press Time |
|---|---|---|---|
| Force | 350 ±10 | lbs | 2 secs |
Figure 1. Press Profile (Force Over Time)
The following images detail the installation process by using a press-fit jig.
Figure 2. JSOM Standoff Installation Steps
- Open the top cover of the press-fit jig
- Place the carrier card on the press-fit jig and insert the JSOM standoff. Close the press-fit jig cover.
- Insert the connector top tool in the press-fit cover and place it on top of the two JSOMs located beside connector JA2. Press the JSOM standoff into the card following the parameters listed in Table 1. Remove the top tool after the press-fit is completed.
- Repeat step 3 to install the JSOM standoff located beside connector JA1. Remove the board from the jig and inspect whether the JSOM standoff is fully flush.