Tantalum, previously known as tantalium, is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue-gray, lustrous transition metal, tantalum is highly corrosion resistant and occurs naturally in the mineral tantalite, always together with the chemically similar niobium. It is part of the refractory metals group, which are widely used as minor component in alloys. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum, but its main use today is in tantalum capacitors in electronic equipment.
Yes, tantalum can be recycled.
It has no odor.
Tantalum (Ta)
tantalum was made 1802 by anders ekeberg
Electrolytic and tantalum
Only electrolytic capacitors (tantalum capacitors are a type of electrolytic capacitor) are polarized.0.001 farad = 1000 microfaradThis is a value that is too large for any practical capacitor except an electrolytic, so yes it will be polarized.
Some capacitors have terminals as they are polarized but some have not as they are not polarized. you can easily identify a polarized capacitor as it has + or - terminal indication marked.
The capacitors those are polarity sensitive are called electrolytic and tantalum capacitors. These capacitors are labeled as positive and negative.
bipolar capacitors
A capacitor that does not have a designated + and - side. Electrolytic capacitors are usually polarized. Ceramic capacitors are not.
While most electrolytic capacitors are the ones that have a polarity noted as minus "-" and "+" as opposed to ceramic or film capacitors, it's important to note that even electrolytic capacitors could also be labelled as "np" for non-polarized or "bp" bi-polarized, which means the same thing, that there is no plus or minus and the current can flow in both directions. Today a good quality electrolytic, most of the time, will be another color to depict this such as green for example, whereas in older circuits they could sometimes look identical but just be missing the little "-" indicator. So, you need to pay attention to this little detail on older boards when replacing a capacitor.
Yes, 1/3
I looked it up but they say "tantalum from Congo is used to make electrical capacitors that go into phones, computers and gaming devices" in my article I'm reading but I still don't understand but from what I'm thinking maybe it helps with the memory? but i will continue to read this article and i would get back to you on that. Thanks!
Electrolytic and tantalum capacitors both have polarity.
The reason that some capacitors are polarized has to do with their physical construction. A common type of polarized capacitor is the aluminum electrolytic capacitor. These capacitors use aluminum coated with a thin layer of aluminum oxide for one plate and a conductive solution as the other plate. This strategy yields very high capacitance in a small physical volume because the aluminum oxide dielectric layer can be made extremely thin. Unfortunately, this construction only allows bias in one direction (the aluminum with the aluminum oxide coating must be the anode) because reversing the bias causes the dielectric to break down. I believe that the chemical reaction that takes place is this: when the aluminum plate coated with aluminum oxide is given a negative charge, the Al+3 ions in the aluminum oxide are reduced back to aluminum metal (taking electrons from the plate). This liberates the oxygen from the aluminum oxide as a gas, which is why reverse-polarizing these capacitors produces out-gassing (and bursting of the physical package of the capacitor if there is no relief valve). Tantalum electrolytic capacitors have a conceptually similar design. The anode is a tantalum wire with an oxide layer as a dielectric. Subjecting these capacitors to reverse bias also breaks down the dielectric by reducing the tantalum ion back to tantalum metal.
A: Polarized capacitors can be smaller in size as compared to a non polarized in the same capacity