BPS products follow the industry standard through-hole assembly practice. For single-sided BPS prototyping PCBs, components are inserted through the holes from the top (silkscreen/blank) side and soldered on the bottom (copper) side, which faces down.

For the solderable breadboard series (SB830, SB404, BR1, etc.), the silkscreen on the top side shows the row and column markings that match your solderless breadboard layout. Keep this side up when you are placing components.

For double-sided PCBs such as our PadBoards (PAD1, PAD2, PAD3U), StripBoards (ST1-D, ST2-D), and ProtoBoards (PR2H1-D, PR2H2-D, PR6H1-D, PR6H2-D, PR6H3-D), components can be soldered to either side, which is useful for compact layouts. If you are not sure which orientation to start with, begin with the side that has the square locator hole markers facing up, as these help with alignment.