Choosing the right Gel box
Megapack™ Gel boxes come in a range of shapes, sizes and materials that make them suitable for a range of applications. This guide provides information useful when choosing your box, but if you are unsure or require more information then please get in touch.
Injection-moulded high-impact polystyrene boxes that are completely clear in appearance.
This product is classified as insulate and should not be used where EDS protection is required, or where devices carried are sensitive to the build-up of electrical charge.
Electrically conductive (ASTM 0-257-78), semiconductor-grade injection-moulded polypropylene boxes that are pre-mixed with pure carbon powder and solid black in appearance.
Surface resistivity < 10-5 ohms/sq
Volume resistivity < 100 ohm - cm
Static delay time < 10 seconds
Black Static Dissipative
Electrically dissipative (ASTM 0-257-78), semiconductor-grade injection-moulded polypropylene boxes that are pre-mixed with pure carbon powder and solid black in appearance.
Surface resistivity < 10-9 ohms/sq
Semiconductor-grade injection-moulded boxes that have a mix of solid black bases and transparent covers.
Same material as Black Conductive.
Proprietary polymer with non-blooming anti-static properties. Semi-transparent in appearance and classed as static dissipative (ASTM 0-257-78). Surface resistivity < 10-10 ohms/sq.
To hold the content of the Gel box in place securely, we offer three standard levels of retention:
50 Shore A Scale
60-80 Shore 00 Scale
48-56 Shore 00 Scale
If you are unsure which tack level is right for your products, please contact us for a free sample.
The gel material used in our Gel boxes is a non-silicone elastomer, which means it will not inhibit soldering, eutectic bonding or gluing. Components requiring any of these production steps can therefore be placed on the gel without the possibility of inhibition. Outgassing and ion contamination tests carried out by customers indicate that the material exhibits very low outgas and very low ionic contamination.
The material has a surface resistivity of 10-12 ohms/sq at 20°C and 40 RH, which means it is described as "insulative" according to ASTM 0-257-78.