Tantalum Oxide & Tantalum Pentoxide Applications

TANTALUM PENTOXIDE or TA2O5

Tantalum (V) oxide (Ta2O5 or tantalum pentoxide) is a white, stable solid compound inert to all chemicals except for hydrofluoric acid and concentrate alkaline solutions. The powder is produced by precipitating a tantalum containing acid solution, filtering the precipitate, and calcining the filter cake. It is often milled to the desirable particle size to meet various application requirements.

Tantalum oxide is a high reflective index and low light absorption material. Ta2O5 has been used in optical glass, fiber, and other instruments.

Due to its high dielectric constant, tantalum oxide sputtering target has been used for production of semiconductor use in DRAM, high frequency CMOS integrated circuits, and flash memory.

Lithium tantalite (LiTaO3) single crystal is another use for tantalum oxide. The crystal is used in optical waveguides, mobile phones, piezoelectric sensors, optical modulators and various other optical applications

Typical Tantalum Pentoxide Chemical Specificiation:

ppm max unless noted

Element	2N8	3N	4N	4N5
Ta2O5	99.8% min	99.9% min	99.99% min	99.995% min
Al	40	10	5	1
Ca	20	10	3	550 mm
Co	10	5	3	1
Cr	30	10	2	1
Cu			3	1
F	800	500	30	10
Fe	100	20	5	1
K	10	5	3	1
Mn	10	5	3	1
Mo	10	5	3	1
Nb	10	5	3	1
Ni	20	5	3	1
P	20	10	3	1
Pb	20	10	3	1
Sb	20	20	3	1
Si	100	30	15	10
Sn	10	5	3	1
W	20	10	3	1
LOI	0.20%	0.20%	0.10%	0.10%
Bulk Density	0.5 g/cc min	0.5 g/cc min
FSSS	0.5 – 1.0 μm	0.5 – 1.0 μm