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2. Recommended Design Guidelines

2-1 Solder Land Pattern

When placing the receptacles on the Printed Circuit Boards using automatic mounting equipment or manually, assure that the

correct diameters of the holes (Fig. 1) are through the entire thickness of the board.

SLocating post hole diameterS

The contacts of receptacle assembly are exposed on the bottom surfaces. The exposed areas of the contacts are a distance

of 0.25 mm minimum from the surface of the Printed Circuit Board, on which the receptacle assembly is placed (Fig.2).

Consideration should be taken not to place or assure insulation of conductive traces under the receptacle assemblies.

Refer to the separate drawings for recommended solder land pattern dimensions of the receptacle, and signals and ground

connection diagram of the transmission module.

2-2 Board-to-Board Spacer heights

The two parallel boards connected by the IT1 connectors should be fastened to additional spacers between them.

Fig. 3 indicates the connector height tolerance and the spacer’s height.

When designing the spacer’s height, consideration should be given to the solder paste thickness and any other features,

which may affect the full mating of the connector.

Fig. 3 indicates design dimensions for the 19 mm board-to-board distance.

Automatic placement / (Locating post hole diameter) C dimension: 1.7 mm

Manual placement

/ (Locating post hole diameter) C dimension: 1.6 mm

/ A position accuracy of +

-0.03 should be exercised from the

center of the hole to contact Number 84.

Fig. 2

Fig. 1 IT1-168S-SV Recommended Solder Land Pattern

(mm)

Fig. 3

(mm)