TrueHeight Spacer Blocks non-collapse disc spacers are said to improve yields of assemblies with large BGA devices. Enables reflow soldering of some types of through-hole devices. Are said to mitigate corner solder bridging caused by BGA warping during SMT reflow. Come in tape-and-reel packaging for automatic placement. Aid in intrusive reflow applications where there is either no standoff function or inadequate clearance under through-hole components by raising the component off the PCB, permitting solder to reflow freely to achieve 100% hole fill.  Height control + 0.010mm.

Alpha, www.alpha.alent.com