Specifications subject to change without notice

Revision 12/19/06 G

WC Series Crystals

32.768KHZ Only

Standard Cylindrical Holders

RoHS Compliant Available

Industrial Temperature Range

ELECTRICAL SPECIFICATIONS:

Series

WC155

WC26

WC38

Frequency Range

32.768KHZ

32.768KHZ

32.768KHZ

Frequency Tolerance

See Part Number Guide

See Part Number Guide

See Part Number Guide

Frequency Stability

Turnover Temperature (To)

+25°C ±5°C

+25°C ±5°C

+25°C ±5°C

Operating Temp. Range

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

Storage Temp. Range

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

Aging

Shunt Capacitance

1.00pF typical

1.35pF typical

1.60pF typical

Equivalent Series Resistance

40K Ohms max

35K Ohms max

35K Ohms max

Load Capacitance

6pF, 8pF, or12.5pF

6pF, 8pF, or12.5pF

6pF, 8pF, or12.5pF

Drive Level

1uWatt max

1uWatt max

1uWatt max

Motional Capacitance

2.5fF typical

3.0fF typical

3.5fF typical

Capacitance Ratio

400 typical

450 typical

460 typical

Quality Factor

80K typical

70K typical

90K typical

MECHANICAL DIMENSIONS:

PART NUMBERING GUIDE:

32.768KHZ

Please consult with MMD sales department for any other parameters or options.

Series

WC155

WC26

WC38

Load Capacitance

Blank = 12.5pF

6 = 6pF

8 = 8pF

RoHS Compliant

Blank = Not Compliant

F = Is Compliant

Frequency Tolerance

Blank = ±20 ppm

-08 = ±8 ppm

-10 = ±10 ppm

MMD Components, 30400 Esperanza, Rancho Santa Margarita, CA, 92688

Sales@mmdcomp.com