BM20 0.4mm Contact Pitch B2B/B2FPC Connector Hirose Electric BM20 0.4mm Contact Pitch, Stacking Height 0.8mm Board-to-Board/Board-to-FPC Connector features a space-saving design with minimum connector width while securing the absorption area that does not affect mounting capability. The splatter-proof, safe structure of the BM20 series ensures high contact reliability and good mating operability. BM20 0.4mm Contact Pitch B2B/B2FPC Connector applications include slim and compact devices such as cell phones and tablet PCs.