BOM of USB to USB keyboard converter ==================================== 2015/03/09 Ref Value Footprint ---------------------------------------------------- C1 1u C_0603_HandSoldering C10 18p C_0603_HandSoldering C11 18p C_0603_HandSoldering C12 1u C_0603_HandSoldering C13 1u C_0603_HandSoldering C2 1u C_0603_HandSoldering C3 0.1u C_0603_HandSoldering C4 18p C_0603_HandSoldering C5 18p C_0603_HandSoldering C6 0.1u C_0603_HandSoldering C7 0.1u C_0603_HandSoldering C8 4.7u C_1206_HandSoldering C9 0.1u C_0603_HandSoldering D1 LED LED_2012_HSOL J1 USB_B USB_B J2 USB_A USB_A R1 22 R_0603_HandSoldering R2 22 R_0603_HandSoldering R3 1K R_0603_HandSoldering R4 33 R_0603_HandSoldering R5 33 R_0603_HandSoldering R6 2K2(1K) R_0603_HandSoldering SW1 PUSH SW_ALPS_SKRP U1 ATMEGA32U4 LQFP-44_10x10mm_Pitch0.8mm U2 MAX3421E LQFP-32_5x5mm_Pitch0.5mm U3 MIC5504-3.3 SC70-6_Handsoldering X1 16MHz crystal_FA238-TSX3225 X2 12MHz crystal_FA238-TSX3225