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<div style="float:right">[[File:CXD90025G_-_pic05.jpg|200px|thumb|left|[[CXD90025G]] inside die overview]]</div> | <div style="float:right">[[File:CXD90025G_-_pic05.jpg|200px|thumb|left|[[CXD90025G]] inside die overview]]</div> | ||
[[File:Ambox_deletion.png]] This article is for educational purposes only, do not try to repeat! [[File:Ambox_deletion.png]] | [[File:Ambox_deletion.png]] This article (to be moved) is for educational purposes only, do not try to repeat! [[File:Ambox_deletion.png]] | ||
== References == | == References == | ||
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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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You can burn/intoxicate by fumes (like countless of experimented and certified chemists). Chemical burn traumata with nitric acid lead to | You can burn/intoxicate by fumes (like countless of experimented and certified chemists). Chemical burn traumata with nitric acid lead to | ||
specific yellow- to brown-stained wounds with slower accumulation of eschar and slower demarcation compared with thermal burns; skins stains/coloration | specific yellow- to brown-stained wounds with slower accumulation of eschar and slower demarcation compared with thermal burns; skins stains/coloration can happens later | ||
on (8 hours) without you noiticing any traumata/burn on the spot. | |||
*Boiling point:83 °C (181 °F; 356 K) 68% solution boils at 121 °C (250 °F; 394 K) | *Boiling point:83 °C (181 °F; 356 K) 68% solution boils at 121 °C (250 °F; 394 K) | ||
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*http://chemistry.about.com/od/makechemicalsyourself/a/How-To-Make-Sulfuric-Acid-At-Home.htm / http://pyrorockets.tripod.com/ How to make concentrated sulfuric acid from a car battery | *http://chemistry.about.com/od/makechemicalsyourself/a/How-To-Make-Sulfuric-Acid-At-Home.htm / http://pyrorockets.tripod.com/ How to make concentrated sulfuric acid from a car battery | ||
*http://www.instructables.com/id/Make-Sulfuric-Acid-by-Copper-Sulfate-Electrolysis/ How to make sulfuric acid by electrolysis of copper using an inert anode | *http://www.instructables.com/id/Make-Sulfuric-Acid-by-Copper-Sulfate-Electrolysis/ How to make sulfuric acid by electrolysis of copper using an inert anode | ||
*http://www.instructables.com/id/Make-Sulfuric-acid-metabisulfiteoxidizer-method/ concentrated sulfuric acid from sodium metabisulfite, | *http://www.instructables.com/id/Make-Sulfuric-acid-metabisulfiteoxidizer-method/ concentrated sulfuric acid from sodium metabisulfite, hydrochloric acid and an oxidant such as hydrogen peroxide or nitric acid (metabisulfite/oxidizer method) | ||
=== Hydrofluoric acid === | === Hydrofluoric acid === | ||
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Because of the ability of hydrofluoric acid to penetrate tissue, poisoning can occur. Rinsing off is not enough. | Because of the ability of hydrofluoric acid to penetrate tissue, poisoning can occur. Rinsing off is not enough. | ||
Accidental exposures can go unnoticed until a day after (too late). | Accidental exposures can go unnoticed until a day after (too late). | ||
*http://en.wikipedia.org/wiki/Hydrofluoric_acid#Health_and_safety | *http://en.wikipedia.org/wiki/Hydrofluoric_acid#Health_and_safety | ||
Porcelain etch gel contain low (9.6%) concentration of Hydrofluoric acid | Porcelain etch gel contain low (9.6%) concentration of Hydrofluoric acid | ||
=== Rosin === | === Rosin === | ||
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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. | ||
== Safety == | == Safety == | ||
Most | Most if 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 | |||
*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 | ||
*acid-prof gloves | *acid-prof gloves | ||
*protection glasses | *protection glasses | ||
*protective suit | *protective suit | ||
... | ... | ||
== Others ways == | == Others ways == | ||
*the safe way: services | *the safe way: services | ||
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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 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) | ||
... | ... | ||