DS15MB200TSQX/NOPB DS-15OF DS15S DS15-T1N 32.768kHz 12.5pF +/-100ppm DS15-T1N 32.768kHz 12.5pF +/-20ppm DS15-T1N 32.768kHz 8.2pF +/-100ppm DS15-T1N 32.768kHz 8.2pF +/-20ppm DS15-T1N 32.768kHz 8.2pF +/-30ppm DS15-T1N 32.768kHz 9pF +/-30ppm DS15-T1N32.768kHz 12.5pF +/-20ppm