DEFINITION OF SOLVENT FREE SINGLE COMPONENT RESIN
A solvent-free, single component resin with low linear expansion and high ionic purity for protecting semi-conductor silicon crystals.
APPLICATION PROPERTIES OF SINGLE COMPONENT RESIN
The consistency of PROTAVIC® PNE 30270 coating resin has been designed for application by micro-dispenser. The rheology allows good wetting of surfaces in
contact with the resin and also good adhesion. It is possible to fill cavities less than 1 millimeter in size. Adjusting the automatic dispensers is made easier by the fact that the viscosity of the product remains stable for one week at 18-22°C. One must take care however not to leave the product, after dispense, in contact with moist air for longer than 1 to 2h. Although not strongly hygroscopic, PROTAVIC® PNE 30270 resin shows a slight drop in glass transition in the presence of moisture. It is therefore preferable to cure as quickly as possible after applying the product. We recommend removing PROTAVIC® PNE 30270 resin from the freezer 15 to 30 minutes before it is due to be used in order for it to reach a temperature of between 18 and 22°C.
METHOD OF USE
PROTAVIC® PNE 30270 resin is supplied frozen and ready for use. It can be supplied in syringes designed to fit on the micro-dispenser, which has the advantage of avoiding handling operations which encourage the entrainment of air bubbles. When the product is supplied in pots, the resin should preferably be degassed for 15 minutes under a vacuum of less than 1mm of mercury. In the absence of stirring, during the vacuum treatment, provide a container which is at least 6 times higher than the initial height of resin.
Optimum application is provided by means of a pneumatic dispenser and needles with an internal diameter of between 0.5 and 1.5 mm. The product can be cured at temperatures from 125°C for a period of at least 30 minutes, but post-curing for 1-2 h at 150-175°C is recommended in order to achieve optimum protection of a silicon crystal.
TYPICAL PROPERTIES OF THE CURED SYSTEM
The properties set out below were obtained after curing for 1h at 175°C. They were determined following measurements carried out in the laboratory over a small number of
tests. They are values given by way of guidance, and do not constitute a guarantee. It will be for the user, in all cases, to carry out his/her own tests to determine whether PROTAVIC® PNE 30270 resin can be used for the particular application which he/she has in mind.
FIELD OF USE
PROTAVIC® PNE 30270 single-component, high purity insulating resin has been developed for protecting semi-conductors in the field of MCM, chip carriers, hybrid circuits and chip on board applications. It is generally recommended for large-sized semi-conductors. The high ionic purity guarantees good reliability of the semi-conductor. The same is true of the adhesion on different substrates which offers optimum protection against external agents (moisture, dust, etc).
PRECAUTIONS IN USE
Refer to the attached safety data sheet.
The PROTAVIC® PNE 30270 resin is supplied in 50 g pots and in 100 g syringes.