Tyvek Moisture Barrier Bag (Tyvek MBB)

Tyvek MBB is ideal for moisture sensitive devices or components, and especially is suitable for sharp-shape components thanks to its excellent puncture resistance.

Item Code M01P-000
Thickness 307㎛, 247㎛
MVTR* < 0.02 g/100 sqinch/24h



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Moisture Barrier Bag (MBB)

It is essential to keep Surface-Mount Devices (SMDs) dry from manufacturing point to the time of reflow soldering. Moisture Barrier Bag, also known as Vapor Barrier Bag, is made by multiple layers of plastic and aluminum that control moisture vapor leakage.


Basically, there are 3 kinds of Moisture Barrier Bags (MBBs), Tyvek MBB, AMBB and ANMBB, in the market. The key factor of moisture barrier function of the bag is a metal layer, like thickness of the foil layer, foil or metalized, etc., but thickness or material of other layers will partially affect the quality of MBB as well.


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