IT1A-168S-SV Hirose Electric Co Ltd, IT1A-168S-SV Datasheet - Page 10

• Manufacturer Part Number: IT1A-168S-SV
• Description: CONN RCPT 168POS HISPEED STR SMD
• Manufacturer: Hirose Electric Co Ltd
• Series: IT1r

Specifications of IT1A-168S-SV

• Connector Type: Receptacle, Outer Shroud Contacts
• Number Of Positions: 168
• Pitch: 0.020" (0.50mm)
• Number Of Rows: 2
• Mounting Type: Surface Mount
• Contact Finish: Gold
• Height Above Board: 0.236" (6.00mm)
• Product Type: Headers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Contact Finish Thickness: -
• Mated Stacking Heights: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2. Recommended Design Guidelines
2-1 Solder Land Pattern
2-2 Board-to-Board Spacer heights
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.
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
Fig. 1 IT1-168S-SV Recommended Solder Land Pattern
Fig. 2 Cross section of IT1 receptacle
Contact_A
IT1 Series High Speed, Matched-Impedance, Parallel Board-to-board Connector System
/ (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. 3
Contact_B
(mm)
(mm)
A303