Why be Concerned
.....and what to do to protect your valuable MSD inventory
Components will begin to absorb moisture from the air as soon as they are removed from protective storage (Moisture Barrier Bags, N2 Cabinets, Desiccating cabinets) and condensation will form on its surfaces. Within a fairly short time moisture will permeate the inside of the package. If reflow soldering is performed under these conditions, the moisture will form into vapor creating pressure inside the package that almost always results in internal damage to the part (cracks or 'Popcorning'). Initially, no irregularities may be visible, defects can be difficult to detect, even if tested electrically. However corrosive ions may eventually find their way through the cracks, corroding and eventually destroying the circuitry inside the chips.
IPC/JEDEC J-STD-033a (July 2002) lays out very specific guidelines for MSD's once they have been removed from MBB quality storage, regarding exposure times to various moisture levels in the production facility, and the approved methods for voiding the parts of that moisture. Some of these methods and procedures can become very confusing, and difficult to implement.
Totech America’s X Dry Cabinets are well equipped to deliver the constant < 5% RH that IPC/JEDEC J-STD-033a (July 2002) demands in order to be "considered equivalent to storage in a MBB with unlimited shelf life". This allows for the return of parts NOT sealed in a MBB for safe storage. In fact dependent on the type of parts, the total exposure, and the total storage time in the X Dry Cabinet, floor life can be reset to zero. This is something that cannot be achieved with an N2 cabinet.
Totech America's X Dry Desiccant Dry Cabinets are;
Passive (No bake cycles to be concerned with)
Inexpensive (No N2 costs, no desiccant to buy or replace)
Simple (No need return parts to MBB's)
Effective (RH levels within parts will decrease while in the cabinet)
Please contact us by clicking here, and we will be happy to discuss our various models and the possibility of an extended in house demonstration.
Click here to see our extensive list of additional items that can be added to your dry cabinet. Options include everything from extra shelves and dividers to locks and alarms.
Totech America offers a wide selection of cabinets to choose from, including storage for printed circuit boards, optics, laboratory equipment, industrial equipment, collectables, media, and more (select an application at the top of this page). If you don’t find what you’re looking for click on our customs page, and our engineers will be happy to put together the perfect solution for you, at a cost that’s less expensive than you may think!