If you love to challenge yourself to try some different and exciting project, then you must try to make an IC Friday Post here.

First of all, since you have to work with the hazardous “Sulfuric Acid”, which and organic solvent that can penetrate through your clothes and even human tissues, therefore you need to wear a full mask with gloves and aprin for this project!

Next, you need to place the chips into a Pyrex beaker and fill it up with sulfuric acid, until the ICs are totally covered by it. You must pay 100% attention, which cannot even allows any water droplets dropping into the beaker (Do take it seriously, as adding any water to acid will result an horrible explosion!).

The plastic carrier already melts off and will leave a black solution, only after twenty minutes of dipping. The silicon dies and remnants of metal pins are remains in the black liquid. You have to remove it carefully, as the liquid is still highly acidic.

Then, you must use a pair of beakers, one for the rinse container purpose and the other one to neutralize the remaining acid. Try to fill up the 500ml beaker with 400ml of water, and put the contents of the smaller beaker into it. Remember that the dies are heavier than water, so they will stay on the bottom of the 500ml beaker when is emptied out. You also need to rinse the beaker that contains the dies to remove any remaining acid.

Next, add some baking soda to neutralize the remaining solution under stirring. The pH is almost close with the neutral stage, after the adding of baking soda. You need to superglue the die to a glass microscope slide to take some images.

Lastly, don’t forget to scrub the surface of the die with some glass cleaner, which doesn’t contain any ammonia in it! Voila, now you have your cool IC Friday Post…[link]

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