The 100MS is an epoxy encapsulated electromagnetic/
electrostatic interference (EMI) shield for use with
circuits where sensitivity to EMI is critical. It was
designed to attenuate EMI by converting electromagnetic
field energy into heat that is absorbed by the
shield and by shunting electrostatic fields to common.
The 100MS may be used in applications to either
confine or exclude EMI. Its cavity was designed for
28.45mm x 28.45mm x 7.24mm, 20-pin hybrid packages.
The shields in the cover and base plate are in two
separate halves to maintain the electrical isolation
between the adjacent rows of pins of the module it
encloses. Because of the spacing between the shield
halves and epoxy flow holes, the 100MS provides a
partial, but adequate low reluctance path for electromagnetic
flux. The 100MS is well suited for use with
isolation modules such as the Burr-Brown 3656, 722,
and 724.