RADIOELCTRONIC UNIT Russian patent published in 2009 - IPC H05K1/00 H05K7/10 H05K7/12 

FIELD: physics.

SUBSTANCE: invention relates to radio electronic units, meant for use in high-performance onboard electronic mainly used in space vacuum conditions. The proposed radioelectronic unit has a base, a set of printed circuit boards, mechanically connected to each other in parallel into a packet and electrically connected to each other in their interface planes using detachable connectors, crossing the plane of the boards each in a separate electrically conducting opening in the board. The bodies of the connectors rest on one side of the printed circuit board. In contrast to existing radioelectronic units, each printed circuit board is put into a frame made from heat and electrically conducting material, resting on it along the perimetre, and is attached to the frame using fastening elements and docking elements in form of a bushing, mounting part, threaded part and a pin-arrester. In the bushing there is a socket under the pin-arrester of an adjacent printed circuit board. The mounting part is fitted into a metal coated electrically conducting opening on the printed circuit board. The threaded part is put into the lug of the frame, and each frame is mounted on a base by the butt end and is attached to the base using fastening elements.

EFFECT: provision for good thermal coupling between printed circuit boards and frames, frames and the base (for example, over 40 cm²) and, consequently, good heat removal from radio components, as well as possibility of using equipment to put the printed circuit boards into the frame and, consequently, accurately guide an electrical connector, previously mounted on the printed circuit board, for its subsequent docking (undocking) with the electrical connector of the adjacent printed circuit board, thereby preventing damage to contacts.

3 dwg