TE Connectivity ATUM-12/4-0-STK – heat-shrink tubing for “sticky” situations Heat shrink tubing usually has very limited contraction rates, which makes covering connector and cable in one piece difficult. TE’s classic provides a nice workaround. When bought, the ATUM-12/4-0-STK is 12mm wide – a short date with a sufficiently strong heat source sets off a recovery process which ends with a diameter of but 4mm. This permits the comfortable covering of both connector and cable as shown in the figure.
…Using but one bit of shrink tubing saves time during assembly
TE claims that shrinking requires 80 degrees Centigrade – the fire-retardant maximum value, however, is set at but 110 degrees. Other parts in the ATUM family offer even higher shrink rates, a wide variety of diameters is available. Our table, taken from the datasheet, gives a quick overview of the possibilities. In addition to that, TE also offers custom sizes if a sufficiently large order can be generated.
Due to the relatively large width of the wall and an added adhesive, the heat-shrink tube will attach itself strongly to most materials – this makes sure that dirt does not sweep into your connection. Nevertheless, TE recommends that the “normal” diameter should closely match the widest component – using an excessively large tube might cause unreliable sealing of the connections.