SDA is staffed and run by former employees of SEI
(Salford Electrical Instruments), originally one of the main manufacturing
companies within the GEC group. When SEI's last remaining factory at Heywood in
Lancashire closed in June 1993 the magnetic materials division, comprising
ferrite and powder core production, was relocated to new sites within the
SDA was formed and subsequently expanded by the acquisition of various SEI
departments. The process began in 1984 with the takeover of potentiometer and
electrolytic hygrometer production, followed in 1986 by the purchase of the SEI
coil winding design and manufacturing facility. In 1996 SDA(Magnetics) was
formed to concentrate on the marketing and sales of magnetic materials. The
company now occupies four units at our Salford address.
SDA supplies fasteners to the electronics industry, specialising in
nickel plated brass, zinc plated steel and stainless steel in BA and metric sizes.
We also supply a full range of washers, nuts and rivets.