C h a p t e r 1 | W a t e r a n d E l e c t r i c i t y
A specific consideration in the interconnection
market is that connectors are usually used in mating
pairs. A sealed or IP-rated connector is frequently
sealed against harsh environments only when mated.
If left unmated—for example, during installation or
maintenance—the connector may not be protected.
Connectors designed for service in harsh
environments must be sealed against water, dirt,
and dust; providing this protection requires careful
consideration of design features. The most important
area of sealing is between the face of the male and
female connector, which is achieved through the use
of a doughnut-shaped O-ring. Locking the mating
halves of the connector in place provides the force
required to compress the O-ring between the male
and female connectors, creating a watertight seal.
Preventing water ingress around the cable entry is
also necessary. Because most cables are circular in
cross-section, a simple rubber gland or gasket can
be used.
Robustness encompasses not only the
durability of a connector and its ability
to endure multiple cycles but also its
adaptability to specific applications.
Designers must consider the available
options and select connectors appropriate
for the application requirements and the
expected service life."
Carlos González Avelino
Product Development Test Engineer, Philips Micro Devices
8
Understanding Harsh Environments for Electronic Design
