It's a transistor, and can also be found at:
FREESCALE SEMICONDUCTOR INC
6501 WILLIAM CANNON DR W
AUSTIN, TX 78735-8523
Tel: (512) 895-7967 Fax: (512) 895-1629
Their part number: SPS6837
It also has a military stock number of: 5961-01-057-6119
www.freescale.com
In April last year, the government bought some from:
NETKOMP, INC.
GOVERNMENT SALES
16113 COPPERHEAD COURT
FONTANA, CA 923365639
Tel: (909) 350-4655 Fax: (909) 350-4455
www.netkomp.com
Hope this helps.
Ken Gunton
RF and Microwave Components
www.ohiomicrowave.com