PC BOARD HARDWARE—This 96-page catalog lists and graphically illustrates the broad Birtcher product line of card guides, retainers, injectors, extractors, and other pc board hardware. The products are used to secure boards and improve their thermal management characteristics. Details on the extensive testing conducted on the Birtcher retainers for reference use are also included in the catalog. The collected performance data evaluates and recommends product lines for clamping force, retention force, shock and vibration, thermal resistance, materials and finishes. Examples of calculations and test results further help engineers select the appropriate board hardware.