Capacitor Grade Tantalum Wire
Tantalum wire is important for capacitors because it is used as the anode lead. It is very good at working well and is very reliable in electronics.
Grade Ta1 tantalum wire meets the requirements of GB/T 3463-1995. It is very clean and can be used with tantalum powder that doesn't have too much oxygen or nitrogen. Ta1 tantalum wire is stable at temperatures below 1700°C because it has small grains.
The qualities of tantalum wire for capacitors are that it has a density of between 16.45 and 16.5, a resistance of 13.5, and a thermal expansion coefficient of 6.5. Additionally, it has a specific heat capacity of 0.142 and a resistance to temperature of 3.5.
Tantalum wire is very strong and can stay in air at room temperature for a long time. But its ability to protect against damage decreases when the temperature reaches 300 degrees Celsius. Tantalum can resist corrosion in most acids, but it can dissolve in hydrofluoric acid and mixtures of it.
In terms of strength, annealed grade Ta1 tantalum wire has a tensile strength of 545 MPa, an elongation of 22.5%, and a surface hardness of 140HV.
The process follows a standard called GB/T 3463-1995 and makes sure the surface is strong and free of oxidation. Grade Ta1 tantalum wire is very good and has a clear surface without oil stains, cracks, or glitches.
To choose good quality tantalum wire for capacitors, you need to think about many things like how it's made and how pure the tantalum powder is. Tantalum capacitor makers use their knowledge to suggest the right wire types and specifications based on how much oxygen and nitrogen are in the wire. If there is more oxygen than 2000 parts per thousand, use Ta2 tantalum wire. If there is less oxygen and the sintering temperature is below 1700 degrees Celsius, use Ta1 grade wire.
In short, choosing the right kind of tantalum wire for making capacitors is very important because it makes them work well and last a long time.
The selection of capacitor grade tantalum wire is recommended as follows:
There are many varieties and specifications of capacitor-grade tantalum wire. When selecting, the varieties and specifications of tantalum wire should be appropriately selected according to the production process conditions of tantalum capacitors and the chemical purity of tantalum powder used with tantalum wire, especially the content of oxygen and nitrogen. Tantalum capacitor manufacturers have rich experience in this. Generally speaking: when the oxygen content is above 2000*10 minus 6 power, Ta2 type tantalum wire should be used when the sintering temperature of specially nitrided tantalum powder or anode block is above 1700°. On the contrary, the selection of Ta1 grade tantalum wire can meet the requirements.
