Both the commercial (C) grade and industrial (I) grade K24 SOMs have two Samtec 0.635 mm AcceleRate® HD high-density connectors.
- The SOM240_1 connector uses the Samtec 0.635 mm AcceleRate HD high-density 4-row, 60 position connector set. The part number for the socket (ADF6–60–03.5–L–4–2–A) is used on the bottom side of the SOM. The part number for the terminal (ADM6–60–01.5–L–4–2–A) is for use on the carrier card.
- The SOM40 connector uses the Samtec 0.635 mm AcceleRate HD high-density 4-row, 10 position connector set. The part number for the socket (ADF6–10–03.5–L–4–2–A) is used on the bottom side of the SOM. The part number for the terminal (ADM6–10–01.5–L–4–2–A) is for use on the carrier card.
The connectors are placed on the bottom side of the carrier card centered between the mounting holes shown in Figure 1.
Board-to-board (B2B) mating connectors must be precisely placed on the PCB, particularly for multi-pair connector applications. Tight control is required during the board layout design and the manufacturing process for product reliability and a decent yield rate. To avoid over-stressing the mechanical design of the connectors and creating functional damage during system assembly, the next figure includes the recommended maximum position tolerance of the connector. Auto-placement machine accuracy and the tolerance of the connector pin solder pad position contributes to this recommendation.