2000905-1 Tyco Electronics, 2000905-1 Datasheet - Page 7

• Manufacturer Part Number: 2000905-1
• Description: BACKPLANE CONNECTOR, RECEPT, 180POS
• Manufacturer: Tyco Electronics
• Series: Fortis Zdr

Specifications of 2000905-1

• Row Pitch: 1.6mm
• Pitch Spacing: 1.9mm
• No. Of Contacts: 180
• Gender: Receptacle
• Contact Termination: Press Fit
• No. Of Rows: 9
• Contact Plating: Gold
• Connector Type: Backplane
• Product Type: Contact Modules
• Contact Gender: Socket (Female)
• Number Of Positions / Contacts: 180
• Mounting Style: PCB
• Mounting Angle: Vertical
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.5. PC Board
Rev B
A. Material and Thickness
The pc board material shall be glass epoxy (FR- -4 or G- - 10). For single plane application, the pc board
thickness shall be a minimum of 1.40. For mid plane application, the backplane thickness shall be a
minimum of 3.8.
B. Tolerance
Maximum allowable bow of the pc board shall be 0.03 over the length of the connector.
C. Holes
The contact holes must be drilled and plated through to specific dimensions. The plating type and
thickness and finished hole size must be as stated to provide unrestricted insertion of the contacts.
See Figure 6.
Pc boards can be back- - drilled (counterbored) for signal integrity performance using no more than the
overall plating thickness dimension provided in Figure 6.
D. Layout
The holes in the pc board must be precisely located to ensure proper placement and optimum
performance of the module. The pc board layout must be designed using the dimensions provided on the
customer drawing for the specific module. Reference sample of the recommended pc board layouts are
shown in Figure 7.
Drilled Hole Diameter
Finished Hole Diameter
Before Plating
0.55+0.025
After Plating
A
0.46
0.47
A
Tin--Lead (SnPb)
Immersion Tin (Sn)
Organic Solderability Preservative (OSP)
Immersion Silver (Ag)
Immersion Gold (Au) Over Nickel (Ni)
(ENIG)
PC Board Contact Hole Dimensions
0.038+0.013
Copper Plating
(Max Hardness 150 Knoop)
B
Plating
Surface Finish
DIMENSION
Figure 6
B
1.40 Min
Thickness Range
0.008+0.004
0.0005--0.004
0.0002--0.0005
0.0003+0.0002
0.0001--0.0005 Au
0.00127--0.0026 Ni
PTH Counterboring
114- - 13267
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