(19)

(11)

EP 0 328 561 A1

(12)

(43) Date of publication: 23.08.1989 Bulletin 1989/34 (21) Application number: 88904790.0 (22) Date of filing: 15.04.1988

(51) International Patent Classification (IPC):  H01L 23/ 44( . ) H01L 23/ 467( . ) H01L 23/ 427( . ) H05K 7/ 20( . ) (86) International application number: PCT/US1988/001244 (87) International publication number: WO 1989/001703 (23.02.1989 Gazette 1989/05)

(84) Designated Contracting States: DE FR GB (30) Priority: 19.08.1987 US 19870087126 (71) Applicant: SUNDSTRAND CORPORATION Rockford Illinois 61125- 7003 (US)	(72) Inventor: NIGGEMANN, Richard, E. Rockford, IL 61107 (US) (74) Representative: SERJEANTS  25, The Crescent King Street Leicester, LE1 6RX Leicester, LE1 6RX (GB)