Epson Crystal Unit

Package: 3000 Pieces/Reel

PN: Q13MC3061000300, Q13MC3061000400

PN: MC-306 32.7680KA-A, MC-306 32.7680KA-AG

Applications: Clock and Microcomputer

Datasheet Contact Us
Parameter Table
Item Symbol Specifications Condition/Remarks
MC-306 MC-306 TYPE
Nominal frequency range f_nom 32.768kHz 20kHz to 120kHz Please contact us regarding available frequencies
 Storage temperature  T_stg -55°C to +125°C Store as bare product.
Operating temperature T_use -40°C to +85°C
Level of drive DL 1.0µW Max.
Frequency tolerance (standard) f_tol ±20 × 10-6, ±50 × 10-6 ±50 × 10-6, ±100 × 10-6 +25°C, DL=0.1µW
Turnover temperature Ti +25°C ±5°C
Parabolic coefficient B -0.04 × 10-6/ °C2 Max.
Load capacitance CL 6pF to ∞ (standard :12.5pF) Please specify
Motional resistance (ESR) R1 50kΩ Max. As per below table
Motional capacitance C1 1.8fF Typ. 4.0fF to 0.6fF
Shunt capacitance C0 0.9pF Typ. 2.0pF to 0.6pF
Frequency aging f_age ±3 ×10-6 / year Max. ±5 ×10-6 / year Max. +25°C, First year

MC-306 TYPE Motional resistance (ESR)
Frequency     20kHz≤f_nom
55kΩ Max. 35kΩ Max. 20kΩ Max. 12kΩ Max.

External Dimensions

(Unit: mm) 

Footprint (Recommended)

(Unit: mm)

Frequency : 32.768KHz

Dimension : 8.0 x 3.8 mm

Load Capacitance : 7pF, 9pF, 12.5pF, or specify

Operating Temp : -40℃~+85℃

Frequency Tolerance : ±20ppm ±50ppm