... :GB 3628,ASTM B 386,etc. Different sizes available tantalum foil Tantalum is dark, dense, ductile, very hard, easily fabricated ... be very thin (thinner than the similar layer in, for instance, an aluminium electrolytic capacitor), a high capacitance can ... of the size and weight advantages, tantalum capacitors are attractive for portable telephones, personal computers, and automotive electronics.GB 3628 ...