Albert John Sambuco, 75, an electrical engineer who worked on military and space programs, died Nov. 2 of complications of pneumonia at Holy Cross Hospital. He lived in Silver Spring.

Mr. Sambuco came to Washington in 1963 to work as a quality control engineer with an Army research organization. In 1975, he joined the Army Research Laboratory's Harry Diamond Laboratories in Adelphi, where he helped develop semiconductors for missile defense and space flight programs. He retired in 1992.

Mr. Sambuco was born in Yonkers, N.Y., and served in the Navy from 1947 to 1951. He graduated from New York University and received a master's degree in electrical engineering from George Washington University in 1971.

He worked for Hughes Aircraft Co. and Lockheed Corp. in California before coming to Washington. He was a member of the Institute of Electrical and Electronics Engineers.

Mr. Sambuco was a member of St. John the Baptist Catholic Church in Silver Spring and participated in discussion groups and various charities at his church. For a number of years, he volunteered to help developmentally disabled residents of the old Great Oaks Center in Silver Spring.

He also taught tai chi and aikido for 35 years for the city of Rockville and at George Washington University.

A son, Joseph Sambuco, died in 1969.

Survivors include his wife of 46 years, Ann Sambuco of Silver Spring; five children, Roseanne Sambuco of Leonardtown, Paul Sambuco and Carmel Keenan, both of Towson, Therese Moorhead of College Park and Lucy Funk of Gaithersburg; a sister; and 10 grandchildren.