Our dry cabinets & dry storage solutions provide a minimal (<0.5%), managed amount of moisture. Moisture absorbing components such as electronic components, circuit panels, nano materials, contact lenses, laboratory examples and other susceptible materials are maintained dry and clear of water ingress. The dehumidification to lower than .5% RH is eligible Low Humidity Cabinets not merely for limitless safe storage, but in addition indicates they could securely eliminate moisture, therefore resetting flooring life without having oxidation, even at background temperature ranges.

Options for your storage space of digital components and compositions to prevent two of the biggest problem triggers: Oxidation and Diffusion.

The storage space of electronic components and compositions is problematic, and increasingly so as the result of two problems.

As a result of fast changes in packaging design and materials, a lot of companies wind up required to purchase extra quantities of components so that you can guard from the effect of element obsolescence on their last product designs. This in turn creates an issue of long term stock storage

Product lifecycles have grown to be really short with new designs coming out sooner than before. However, many producers, including automobile suppliers, must ensure that the accessibility to replacement components such as PCBs for up to 10 years. This case also necessitates the advance buy and prolonged storage of components and materials. Additional complicating however , most components cannot be kept for over 10 many years without having special dealing with procedures.

Component micro-cracking resulting from the absorption and rapid release of moisture. The largest threat posed is moisture. This is the reason behind two of the biggest defect triggers: Oxidation and Diffusion.

Because of surface area oxidation, components and PCB’s can suffer from decreased solderablity, which regularly results in total failure. Diffusion of vapour and noxious substances within the inner framework of the elements or PCB’s can result in long-term disintegration of conductor paths and isolation levels. Each dangers could be prevented by correct dealing with and dry storage.

The oxidation procedure – contact corrosion

Inside an extremely-dry atmosphere there is no rust. For corrosion to happen, two needs must be fulfilled: there must be a means of oxidation along with a watery remedy, which functions as being an electrolyte. The oxygen within the air types the means of oxidation, the vapour (moisture) the electrolyte. The critical limit where oxidation with o2 happens lies as outlined by the metal or alloy at between 40 to 70 % RH. Because of this a lot more than 8 grams of vapour for each m³ has to be existing.

Solution 1: Dried out Storage Cupboard

The absolute humidity in Dry Cabinets For PCB Storage lies with a heat of 20 °C and <2%RH with less than 0.35 g/m³. Under these conditions no cathode reaction is present and no oxidation can take place.

Solution 2: Dampness Barrier Bags

In humidity safety bags packed under vacuum using a rest stress of ca. 6 mbar there will be among .1 and .06 g vapour for each m³. If the hand bags are loaded with nitrogen, neither a means of oxidation, neither an electrolyte are available, and oxidation is extremely hard.

The Diffusion process

The vapour inside the atmosphere diffuses into hygroscopic components. The main cause of this is actually the so named vapour stress – this means the partial pressure from the vapour that is contained in air. The greater the vapour pressure, the quicker the components or PCB’s absorb humidity with this the permissible handling time reduces.

All components courses 2a to 5a in accordance with the category of IPC/JEDEC J-STD020D soak up no moisture having a vapour stress of < 2.82. At this degree they can be stored and processed forever.

ProDry Storage Cabinets maintain over 24 hours normally a vapour pressure of < 0.95 mbar reliably and effectively protecting from moisture diffusion. For Dehumidifying Dry Cabinets in excess of 5 years, a combination of both systems anmtvj recommended. The storage space in humidity protection hand bags with nitrogen existing within a easy dry storage space cabinet with 5 % RH.

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