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Tel: 0044 (0)118 979 1238

Fax: 0044 (0)118 979 1283

E-mail: info@actcrystals.com

Parameter

Symbol

Specification

Condition

Nominal Frequency

fo

32.768KHz

Frequency Tolerance

Δf/fo

±20ppm

@25°C

Frequency v Temp Characteristics

Δf/fo

See drawing

-10 ~ +60°C

Turnover Temperature

Tm

25°C ±5°C

Freq. Temp. coefficient

β

(3.5 ±0.8) x 10-8/°C² max

Temp Operating Range

Topr

-40 ~ +85°C

Temp Storage Range

Tstg

-55 ~ +125°C

Equivalent Series Resistance

ESR

50K

Ω max

@25°C

Shunt Capacitance

Co

1.0pF Typical

Load Capacitance

CL

12.5pF

Motional Capacitance

C1

2.1fF Typical

Drive Level

DL

1

μW max

Insulation Resistance

IR

500M

Ω min

@DC100v

Aging (first year)

Fa

±5ppm

@25°C

In line with our ongoing policy of product evolvement and improvement, the above specification may be subject to change without notice.

3 The Business Centre, Molly Millars Lane, Wokingham, Berkshire, RG41 2EY, UK

http://www.actcrystals.com

Customer to specify : Frequency Tolerance, Load Capacitance, Operating Temperature Range & Storage Temperature Range

ISO9001:2000 Registered

For quotations or further information please contact us at:

Please note that all parameters can not necessarily be specified in the same device

ACT201

Specification

The ACT201 is a miniature surface mount Watch Crystal whose low power consumption makes it

ideal for portable applications. It’s size makes it suitable for high density circuit boards or

applications where space is limited and the tape and reel packaging means that it is ideal for

automatic placement machines.

The heart of the device is a heat resistant cylinder type crystal which gives it high

stability characteristics sufficient to allow reflow soldering. The epoxy based encapsulation makes it

less porous than the ACT200 and, therefore, better suited to post reflow washing

-20 -10

0

+10 +20 +30 +40 +50 +60

0

-10

-20

-30

-40

-50

-60

Temperature °C

Typical Temperature Characteristics

Suggested F ootprint

8.7 max

3.7 max

5.5

2.5 max

0.5 mm ± 0.1

1.15 ± 0.2

4.2

1.3

1.8

1.0

Dimensions in mm

Issue : 4 I3

Date : 17/08/04

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