✂️ Another tant…

21 seconds · Clipped by François Revol · Original video "Checking out / starting repairs of IBM PS/2 Model 50z, 486 VLB board, and a battery-damaged 386/486"...

YouTube

There it’s processed into #tantalum, a heat-resistant #metal that fetches >$300 a kilogram & is in high demand by makers of mobile phones, computers, aerospace components & gas turbines.
#Rubaya produces ~15% of the world’s #coltan, all dug manually by #impoverished locals who earn a few dollars per day. Control of this mine is the biggest prize in a long-running conflict in this central #Africa nation.

#Congo #DRC #Rwanda #Kinshasa #Tutsi #HumanRights #exploitation #business #tech #geopolitics

Have to #reverse #engineering this little #Minox #analog #film #camera to find the short in its #electronics. It has some battery corrosion but my money is on one of the #tantalum #capacitors on the circuit board. I managed find #repair #manual but it's useless as the board diagram is nothing as it is on the actual camera. I guess I'll have to do it the old way, desoldering the board and mapping the traces.

It's seems #hakunamatata that #capacitors usually marked on the negative terminal 🤷!
You notice most #Tantalum capacitors have the Positive lead marked🤔?
#HapaUjanjaTu, it could be just a coin toss to use the negative or positive side, or 🤷!

www.5021.tips/ujanja/ecucomponents

☝️👆
This some rubbish on #ElectronicComponents on a #circuitboard of a #controlunit having #5021tips #repairtips for #ecurepairs #electronicsrepair #CircuitBoardRepair #motherboardrepair #ecu #electronicsrepair #wiring

In a bold move, the Democratic Republic of #Congo #DRC has filed criminal complaints against #Apple in #Belgium and #France, accusing the tech firm of using #conflictminerals in its supply chain.

Congo is a major source of #tin, #tantalum and #tungsten and some artisanal mines are run by armed groups involved in massacres of civilians, mass rapes, looting and other crimes, according to U.N. experts and #humanrights groups.

https://www.reuters.com/sustainability/society-equity/congo-files-criminal-complaints-against-apple-europe-over-conflict-minerals-2024-12-17/

According to current knowledge, tantalum hafnium carbide (Ta4HfC5) has the highest known melting point of any material, with a melting point of approximately 4,215°C (7,619°F).

#science #sciencefacts #meltingpoint #tantalum #hafnium #tantalumhafniumcarbide #Ta4HfC5

Exploring Cheap Tantalum Caps Of Mysterious Provenance

We’ve all heard about the perils of counterfeit chips, and more than a few of us have probably been bitten by those scruple-free types who run random chips through a laser marker and foist th…

Hackaday
Searching for the decay of nature's rarest isotope: Tantalum-180m

Tantalum is one of the rarest elements and has multiple stable isotopes. The least abundant tantalum isotope, Ta-180 is found naturally in a long-lived excited state, a feature unique to this isotope. In excited states, a nuclei's protons or neutrons have higher than normal energy levels.

Phys.org

$2500 and a Dream: Fansteel and the History of Tantalum

clarifying historical contextualization of the Democratic Republic of Congo & its range of sociocultural & sociotechnical factors

#congo #coltan #tantalum

a story of labor exploitation, suppressing militant organizing, state-backed development of global supply chains, the ups and downs of corporate raider capitalism, environmental damage and legal chicanery

https://ripcorp.biz/episodes/2500-and-a-dream-fansteel-and-the-history-of-tantalum

$2500 and a Dream: Fansteel and the History of Tantalum | RIP Corp

The history of the commercial application of tantalum is a story of labor exploitation, suppressing militant organizing, state-backed development of global supply chains, the ups and downs of corporate raider capitalism, environmental damage and legal chicanery. It’s a story of technological development deeply bound up with, and used to perpetuate colonial violence. And it might have something to tell us about the current era of mineral supply chain anxieties in the United States. Our research into the history of the tantalum capacitor brought us to the U.S. National Archives, old electronics magazine collections, eBay, and ultimately to the subject of this episode: Fansteel

RIP Corp