Seika Sangyo’s McDry cabinets are developed for storage and dehumidification of ICs. The absorption of moisture in sensitive components poses problems for SMT assembly, resulting in micro cracks and popcorning. The company additionally introduced the regenerative mineral zeolite (alkali aluminum silicates) as a cheaper and maintenance-free alternative to nitrogen. Zeolite can absorb and release water without having to be replenished. With this drying agent, moisture from within ICs is removed, and the material then automatically regenerates through heating, to evaporate the absorbed moisture. The McDry series DXU 4006 is a generously dimensioned dryer (width 1650 mm, height 2180 mm, depth 1305 mm), being specially developed for large components, circuit board containers, complete storage trolleys or feeder units from SMT lines. The capacity of the ESD-complying cabinet is such that it can include six to eight storage trolleys or a complete feeder unit. The welded melamine coated steel construction has two glass doors with magnet seals and a removable unit in the upper parts. Eight drying units constantly maintain a relative humidity of 5 %. Sensors constantly monitor humidity and temperature. This data can be recorded. The drying cabinets fulfill IPC/JDEC standards (033A) for the storage of moisture-sensitive components. They allow for the handling of moisture-sensitive components and half-circuit units within IPC guidelines, including during longer standstills.
EPP EUROPE 447
Productronica Hall A3/327
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