HC-49S / HC49SD HC-49U UM-1 / UM-5 Tuning Fork SMD Crystal 7x5 / 6x3.5 / 5x3.2 (4PAD) 6x3.5 / 5x3.2 (2PAD) 4x2.5 / 3.2x2.5 / 2.5x2.0