Tantalum powders

EB melted capacitor powder: 1, 2a, 2b, 3, 4a, 4b, 5a, 5b

Tantalum powder for high-voltage capacitor BB-1, BB-2, BB-3

Tantalum powder of fine grain size TaPM

Agglomerated Tantalum powder TaPA, TaPB

Chemical composition, %

Grade
Ta
Ti
 W
Mo
O
N
Na
Al
Cr
Co
Cu
1, 2a, 2b, 3, 4a, 4b
5a
5b
BB-1, BB-2, BB-3
TaPA TaPB
TaPM
balance
0.0008
0.0008
0.0008
0.0008
0.0008
0.01
0.01
0.003
0.003
0.003
0.003
0.02
0.01
0.001
0.001
0.001
0.001
0.01
0.15
0.25
0.3
0.15
0.35
0.9
0.012
0.012
0.012
0.012
0.012
0.01
0.0003
0.0003
0.0003
0.0003
0.0003
0.0005
0.0008
0.0003
0.0003
0.0005
0.0003
0.01
0.0008
0.0005
0.0005
0.0005
0.0005
0.008
0.0001
0.0001
0.0001
0.0001
0.0001
0.0005
0.002
0.001
0.001
0.001
0.001
0.01
Grade
Nb
Fe
Si
C
H
Mg
Ca
Mn
Ni
Zr
Sn
1, 2a, 2b, 3, 4a, 4b
5a
5b
BB-1, BB-2, BB-3
TaPA TaPB
TaPM
0.05
0.1
0.1
0.05
0.05
0.2
0.005
0.002
0.002
0.002
0.003
0.05
0.003
0.0015
0.0015
0.001
0.0015
0.02
0.01
0.007
0.007
0.003
0.007
0.05
0.01
0.01
0.01
0.01
0.01
0.05
0.0003
0.0003
0.0003
0.0003
0.0003
0.01
0.0015
0.002
0.002
0.0015
0.002
0.02
0.0003
0.0003
0.0003
0.0003
0.0003
0.005
0.0005
0.0005
0.0005
0.0005
0.0005
0.01
0.0005
0.0005
0.0005
0.0005
0.0005
0.001
0.0005
0.0002
0.0002
0.0003
0.0003
0.0005


Powder characteristics

Property/Grade
1
2a
2b
3
4a
4b
5a
5b
BB1
BB2
BB3
TaPM
Grain size, mm
40-63
5-63
5-63
5-40
20-63
20-63
3-30
3-30
40-63
20-63
5-63
<5.0
Sieve remainder 0063(+)
004 (+)
004 (-)
10
-
10
10
-
-
5
-
-
-
10
-
1.5
-
-
1.5
-
-
-
-
-
-
-
-
10
-
10
2.0
-
-
5.0
-
-
-
-
-
Specific surface, cm/2g
70-
140
240-
330
280-
410
390-
560
130-
160
150-
180
600-
800
700-
1000
actual
-
-
2000-
3000
Bulk density, g/cm3
7-8
6.8-
7.3
6.3-
7.0
5.9-
6.4
7.5-
7.8
7.2-
7.6
4.8-
5.3
4.6-
5.0
7-8
7,2-7,6
6.3-
7.0
3.0-
4.0
Specific charge, mC/g
-
-
-
-
-
-
4000-
4900
4900-
5600
600-
1000
1100-
1500
1800-
2200
3700
+(700)
Specific ?apacitance, CV/g
7-10
14-16
17-20
19-22
10-12
12-14
-
-
-
-
-
-
DCL, mA/mC - 10-3
-
-
-
-
-
-
<2.0
<2.0
<1.0
<1.0
<1.0
-
Average leakage current, mA
<2.0
<3.0
<3.0
<3.0
<3.0
<3.0
-
-
-
-
-
-
Dissipation factor, tan d, %
<2.0
<3.0
<3.0
<3.0
<2.0
<2.0
<2.0
<2.0
<4.0
<5.0
<7.0
-


Metallurgical grade Tantalum powder

Grade
Ta
Nb
N
O
C
Fe
Si
Ti
Na
S
P
Ca
A
99.0
0.1
0.5
0.5
-
0.07
0.05
-
0.07
0.01
0.01
0.05
B
99.5
0.05
0.2
0.3
-
0.01
0.01
-
0.02
0.005
0.005
0.002
C
98.6
0.1
0,5
0,5
0.2
0.07
0.05
0.02
0.02
-
-
-