BM29 Ultra Compact Hybrid Board to FPC Connectors Hirose BM29 Ultra-Compact Hybrid Board to FPC Connectors are the industry's smallest size hybrid board to FPC connectors and contribute to space-saving and design flexibility in mobile devices. Hirose BM29 connectors have a 0.35mm pitch, a 1.5mm depth, and 0.6mm stacking height. These Hirose connectors have a 3A rated current for power and 0.3A for signal. BM29 features unique metal guides that prevent housing damage due to offset mating. A clear tactile click ensures secure mating. This connector series offers a -40 to +85ºC operating temperature range.