Tantalum Wire

Tantalum Wire, Tantalum Tungsten Alloy Wire (Ta-2.5W, Ta-10W)
Standard: ASTM B365-98
Purity: Ta >99.9% or >99.95%

Tantalum Wire Applications

Tantalum wire is mainly used as anode lead in the tantalum capacitors. It can be used for electrolytic capacitor, electrode, and rectifier. Also, tantalum wire is used to make flakes or sewing thread to mend the destructive tissue.

Tantalum Wire Specifications

Diameter, Inch (mm)	Tolerance, +/-Inch (mm)
0.010~0.020  (0.254~0.508)	0.0005 (0.013)
0.020~0.030  (0.508~0.762)	0.00075 (0.019)
0.030~0.060  (0.762~1.524)	0.001 (0.025)
0.060~0.090  (1.524~2.286)	0.0015 ( 0.038)
0.090~0.125  (2.286~3.175)	0.002 (0.051)

Tantalum Wires for Capacitor Leads

Grade:DTa1,DTa2

Chemical Compositions(Maximum Values, ppm)

Chemical Compositions, Max
Grade	O	C	Si	N	Fe	H	Nb	Ni	W	Mo	Ti	Cr	Ta
DTa1	0.02	0.005	0.003	0.0035	0.0045	0.0015	0.005	0.0025	0.002	0.002	0.0005	0.0025	99.95
DTa2	0.02	0.005	0.003	0.0035	0.0045	0.0015	0.005	0.0025	0.002	0.002	0.0005	0.0025	99.95

Diameter and Tolerance(mm)

Dianmeter	0.13	0.15	0.19	0.20	0.23	0.24	0.25	0.29	0.30	0.35	0.40	0.50	0.60	0.80	1.00
Tolerance	±0.005				±0.006								±0.008
Ellipticity	0.004				0.005								0.006

Number of Bends

Grade	D/mm	The number of bends, not less than
DTa1	0.13-0.4	3
	＞0.4	4
DTa2	0.13-0.4	4
	＞0.4	6

Mechanical Properties

State	Tensile Strength(mp)	Elongation(%)	Wire curl
Mid(M)	300-750	10-35	1000
Semi-hard(Y2)	750-1250	1-5	650
Hard(Y)	＞1250	1-5	650

Electrical Properties

Current leakage, maximum 0.04uA/cm2

Tantalum wire for wet capacitor Kc=10~12uF•V/cm2

Special requirements to be agreed upon by the supplier and buyer

Tantalum wire for electrical light sources

Grade	Chemical Compositions, Max
	C	O	N	H	Nb	Fe	Ti	W	Mo	Si	Ni	Ta
Ta1	0.01	0.03	0.01	0.0015	0.20	0.01	0.01	0.05	0.02	0.05	0.01	Balance
Ta2	0.01	0.03	0.01	0.0015	0.15	0.01	0.01	0.05	0.02	0.05	0.01	Balance

Special requirements to be agreed upon by the supplier and buyer