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ABS07 32.768 kHz

Public Unreviewed

by Ray

Abracon 32.768 kHz tuning-fork crystal, 3.2x1.5mm SMD. 12.5 pF load, the RTC timebase. Datasheet-verified.

componentcrystal32khzrtctuning-forksmdabracon
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ABS07-32.768KHZ

Abracon · 32.768 kHz tuning-fork crystal · SMD 3.2x1.5mm

A 32.768 kHz tuning-fork quartz crystal in a compact 3.2 x 1.5 mm SMD can, the timebase behind real-time clocks and low-power timers. That odd frequency is exactly 2^15 Hz, so a 15-stage divider turns it into a clean 1 Hz tick, which is why every RTC (the DS1307, DS3231, and the RTC block in most MCUs) wants one on its XTAL pins. It is a two-terminal passive: connect it across the oscillator inputs with two small load capacitors sized for its 12.5 pF load. Its low frequency means microwatt oscillator power, ideal for coin-cell timekeeping.

Pinout

Pin Name Type Function
1 XTAL1 passive Crystal terminal 1. Connect to one leg of the oscillator circuit (typically to the OSC input/output pin of the host RTC/MCU) with the load capacitor to ground per CL = 12.5 pF specification. Non-polarized; terminals are interchangeable.
2 XTAL2 passive Crystal terminal 2. Connect to the other leg of the oscillator circuit with the matching load capacitor to ground. Non-polarized; interchangeable with pin 1.

Key specifications

Parameter Value
Type Tuning-fork quartz crystal
Frequency 32.768 kHz (2^15 Hz)
Frequency tolerance ±20 ppm
Load capacitance 12.5 pF
ESR 70 kΩ max
Use RTC / low-power clock timebase
Terminals 2 (XTAL1, XTAL2)
Package SMD 3.2 × 1.5 mm

Ordering variants

  • ABS07-32.768KHZ-T (3.2x1.5mm)
  • ABS07-32.768KHZ-9-T (9 pF load)

CAD (KiCad official)

  • Symbol: Device:Crystal_Small
  • Footprint: Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm
  • 3D model: SMD 3215 2-pin crystal (KiCad packages3D)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Abracon datasheet (6 pp, sha256 5b21d42d9ca704d8, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF