Shroud Selection Information

Catalog E 074482 02/00 Edition 1
ERmet 2mm Hard Metric Connectors
Examples:
• For a backplane thickness of 2.5 mm and the need to
accommodate all three rear mating lengths (terminals R1,
R2 and R3), a shroud base thickness of 6.1 mm must be
used.
• With a 5.0 mm thick backplane and a shroud with a 5.3
mm base thickness, only the R1 and R2 terminal length
pins may be used. The R3 terminal would be too short to
ensure the proper wipe length for reliable mating.
• With a 3.0 mm thick backplane and a shroud with a 5.3
mm base thickness any R1, R2 and R3 terminal length
pin may be used.
10.5
R1=16.0
R2=14.5
3.9
H
R3=13.0
Backplane Y
3.0
8.2
Male
Connector
8.5 __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
________________________________________
________________________________________
________________________________________
8.0 __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
________________________________________
________________________________________
________________________________________
___________________________________
7.5 __ __ __ __ __R1
___________________________________
________________________________________
________________________________________
________________________________________
__________________________
7.0 __ __ __ __ __ __ __ __ __ __ __ __ __ __ R1
__________________________
________________________________________
________________________________________
________________________________________
6.5 __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
________________________________________
________________________________________
_ _ _ _ _R2
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R1
________________
___________________________________
6.0 __ __ __ __ __R1
___________________________________
________________________________________
________________________________________
________________________________________
__________________________
5.5 __ __ __ __ __ __ __ __ __ __ __ __ __ __ R2
__________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ R1
__________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ R1
_______
________________________________________
_
_
_
_
_
_
_
_
_
_
_
_
_
_
5.0 _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
________________________________________
_ _ _ _ _R3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R2
________________
________________________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R1
________________
4.5 __ __ __ __ __R2
___________________________________
_ _ _ _ _R1
___________________________________
________________________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ R3
__________________________
__________________________
4.0 __ __ __ __ __ __ __ __ __ __ __ __ __ __ R2
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ R2
_______
________________________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ R1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ R1
_______
________________________________________
3.5 __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R3
________________
________________________________________
_ _ _ _ _R3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R2
________________
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
________________
3.0 _ _ _ _ _R2
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R1
________________
________________________________________
________________________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ R3
_______
__________________________
2.5 __ __ __ __ __ __ __ __ __ __ __ __ __ __ R3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ R2
_______
_ _ _ _ _ _ _ _ _ _ _ _ _ _ R2
__________________________
________________________________________
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R3
_ _ _ _ _ _ _ _ _ R1
_______
___________________________________
2.0 __ __ __ __ __R3
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _R2
________________
________________________________________
________________________________________
________________________________________
1.5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
3.9 mm
4.5 mm
5.3 mm
6.1 mm
H-Shroud Base Thickness (mm)
(Dimensions illustrated below)
3.9
4.5
5.3
6.1
Level 1
Level 2
Level 3
Rear
Shroud
Shroud Base
Thickness
(Dimensions illustrated below)
After the backplane has been designed and its final overall
thickness is determined, it is often challenging to select the
proper shroud. Furthermore, a design may specify sequential mating in the rear which requires several different terminal lengths.
To accommodate a wide range of backplane thicknesses
and up to 3 rear mating levels, ERNI offers shrouds with 4
different base thicknesses. Which base thickness you
select depends on both the backplane thickness and the
number of terminal lengths you need. Note that due to the
extremely long contact wipe length (2.5 mm), several different combinations of pin terminal lengths and shroud base
thicknesses may be used to achieve the same functional
result.
The chart at right shows for each of the four shroud base
thicknesses, which connector terminal lengths (R1, R2 or
R3) may be used for any specific backplane thickness
(1.5 mm to 8.0 mm).
After selecting the proper shroud base thickness, find the
shroud part number on page 94.
Y-Backplane Thickness (mm)
Shroud Selection Information
Level 1
Level 2
Level 3
http://Connect.ERNI.com/contact/
9.7 11.2