Fabrication techniques and properties of multifilamentary Nb3Sn conductors

Various processing techniques for multifilamentary Nb
3
Sn and V
3
Ga are reviewed. The critical current of commercially produced Nb
3
Sn wires manufactured by both the bronze and external diffusion techniques are compared. Critical currents for in situ and powder processed Nb
3
Sn are also included. New developments which promise improvements in J
c
are discussed.