ABS07 32.768kHz Crystals Abracon ABS07 32.768kHz Crystals are low-frequency crystals in a low-profile surface-mount package. ABS07-LR low ESR crystals feature a guaranteed Equivalent Series Resistance (ESR) of 50kΩ maximum for low power designs. The ABS07L series offers a height of only 0.38mm for high-density circuit boards. Abracon ABS07 crystals are ideal for use in a wide range of communication and measuring equipment, commercial/industrial applications, and more.