Editing User talk:Ada L0ve Lace/sandbox
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*http://www.cleanroom.byu.edu/wet_etch.phtml Wet Chemical Etching of Metals and Semiconductors | *http://www.cleanroom.byu.edu/wet_etch.phtml Wet Chemical Etching of Metals and Semiconductors | ||
== Decap a (epoxy packaged) chip, but why? == | == Decap a (epoxy packaged) chip, but why? == | ||
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**to get die numbers | **to get die numbers | ||
**check for counterfeit (e.g. http://www.cti-us.com/pdf/CCAP-101InspectExamplesA6.pdf) | **check for counterfeit (e.g. http://www.cti-us.com/pdf/CCAP-101InspectExamplesA6.pdf) | ||
*microprobing | *microprobing | ||
*if somehow, you end up here for making explosive things/dispose body, it s not the right place. | *if somehow, you end up here for making explosive things/dispose body, it s not the right place. | ||
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Porcelain etch gel contain low (9.6%) concentration of Hydrofluoric acid | Porcelain etch gel contain low (9.6%) concentration of Hydrofluoric acid | ||
=== Hydrochloric Acid | === Hydrochloric Acid | ||
*https://en.wikipedia.org/wiki/Hydrochloric_acid#Safety | *https://en.wikipedia.org/wiki/Hydrochloric_acid#Safety | ||
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[[File:Imbox content.png]] Warning: | [[File:Imbox content.png]] Warning: | ||
Ethylenediamine is a skin and respiratory irritant. Unless tightly contained, liquid ethylenediamine will release toxic | Ethylenediamine is a skin and respiratory irritant. Unless tightly contained, liquid ethylenediamine will release toxic and irritating vapors into its surroundings, | ||
especially on heating. The vapors react with moisture in humid air to form a characteristic white mist, which is extremely irritating to skin, eyes, lungs and mucus | |||
especially on heating. The vapors react with moisture in humid air to form a characteristic white mist, | membranes. Exposure to a relatively small amount of vapor or mist by inhalation can seriously damage health and may even result in death. | ||
=== Ultrasonic bath === | === Ultrasonic bath === | ||
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=== Microprobing === | === Microprobing === | ||
Microprobing techniques (invasive attacks) can be used, once the chip is depackaged, to access the chip surface directly, | Microprobing techniques (invasive attacks) can be used, once the chip is depackaged, to access the chip surface directly, thus we can observe, manipulate, and interfere with integrated circuit. | ||
Microprobing workstation: Its major component is a special optical microscope with a working distance of at least 8 mm between the chip surface and the objective lens. | Microprobing workstation: Its major component is a special optical microscope with a working distance of at least 8 mm between the chip surface and the objective lens. | ||
On a stable platform around a socket for the test package, we install several micropositioners , | On a stable platform around a socket for the test package, we install several micropositioners , which allow us to move a probe arm with submicrometer precision over a chip surface. On this arm, we install a probe needle. | ||
These elastic probe hairs allow us to establish electrical contact with on-chip bus lines without damaging them. | These elastic probe hairs allow us to establish electrical contact with on-chip bus lines without damaging them. | ||
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Most of the items listed here are Prohibited Items (no fly)-hazardous materials (e.g. http://www.tsa.gov/traveler-information/prohibited-items) | Most of the items listed here are Prohibited Items (no fly)-hazardous materials (e.g. http://www.tsa.gov/traveler-information/prohibited-items) | ||
In most of countries, having them/making them/speaking/thinking/dreaming about them (with or without an proper license) is enough to put you in jail | |||
and being raped many time by many people/items. | and being raped many time by many people/items. | ||
*before: no fly items - studish/read - ... | *before: no fly items - studish/read - ... | ||
*during: humble state of mind / not high/not drunk - ... | *during: humble state of mind / not high/not drunk - ... | ||
*after: storage/disposal of hazardous items, nearest clinics | *after: storage/disposal of hazardous items, nearest clinics - .... | ||
*proper workplace/labs (not your kitchen table or RV vehicle as acids can cause | *proper workplace/labs (not your kitchen table or RV vehicle as acids can cause spontaneous combustion with organics) | ||
*fume Cabinet | *fume Cabinet | ||
*acid-prof gloves | *acid-prof gloves | ||
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*the burning way: propane or butane torch (no wires remaining) | *the burning way: propane or butane torch (no wires remaining) | ||
*the Indian way: razzorblade (e.g. [http://www.psdevwiki.com/ps3/File:RSX_die_-_Image_made_by_H%C3%A9ctor_Mart%C3%ADn.jpg RSX die], scraped with razorblade by '''Héctor Martín''' aka '''Marcan''') | *the Indian way: razzorblade (e.g. [http://www.psdevwiki.com/ps3/File:RSX_die_-_Image_made_by_H%C3%A9ctor_Mart%C3%ADn.jpg RSX die], scraped with razorblade by '''Héctor Martín''' aka '''Marcan''') | ||
*the laser way: https://www.youtube.com/watch?v=J00BEGsqIZE | |||
*the laser way: | *the CO2 laser way: http://hackaday.com/2015/08/29/co2-laser-decapping-to-fix-soldering-mistake/ | ||
*the portal way: http://www.nordson.com/en-us/divisions/march/support/Literature/Documents/Nordson-MARCH-Mold-Decap-Article-USTech-July2012.pdf vacuum plasma | *the portal way: http://www.nordson.com/en-us/divisions/march/support/Literature/Documents/Nordson-MARCH-Mold-Decap-Article-USTech-July2012.pdf vacuum plasma | ||
*the brute force: way https://www.youtube.com/watch?v=tjjIyJxqOqE brute force (several people apparently insist that this is not decapping but just destroying) | *the brute force: way https://www.youtube.com/watch?v=tjjIyJxqOqE brute force (several people apparently insist that this is not decapping but just destroying) |