The compact circuit package (11) includes an insulating housing (12) providing a circuit retaining cavity (19) substantially surrounded by a pair of spaced side walls (15, 16) each terminating at a first rim (21, 22) and a second pair of spaced side walls (17, 18) each terminating at a second rim (24,...http://www.google.com.au/patents/US4574162?utm_source=gb-gplus-sharePatent US4574162 - Compact circuit package with improved construction for clamping to enhance heat transfer