Answers Database

PACKAGES: PACKAGING- Plastic packages are not hermetic.


Record #144

Problem Title:
PACKAGES: PACKAGING- Plastic packages are not hermetic.


Problem Description:
Keywords: plastic, package, moisture sensitive, hermetic

Urgency: standard

Description

The plastic packages Xilinx sells are not hermetic.
That means liquid can get into the package and damage the die.



Solution 1:

The ceramic and hermetically sealed packages Xilinx offers should not have this
problem.




Solution 2:

For plastic packages, there's a note on the package to use or install the device
 w/in 160 hours of opening it. What happens to the devices in the package after
it's been opened for over 160 hours?  If your device is a plastic package, it ha
s a tendency to absorb moisture from the air. This doesn't affect the device but
 if it's heated quickly (i.e.from soldering), then the device could be damaged.
If a device is opened for a long period of time, it's suggested to dry back the
device. There's additional info regarding moisture sensitivity in chapter 10 the
 databook.



End of Record #144