Tel (44) 0118 979 1238
Fax (44) 0118 979 1283
email info@actcrystals.com
Please note that not all parameters can necessarily be specified in a single device
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3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
www.advancedcrystaltechnology.com Issue 2 M4 22/9/03
ACT200
The ACT200 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 applica-
tions 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
Parameter Symbol Specification Condition
Nominal Frequency fo 32.768KHz
Frequency Tolerance ∆f/fo ±5ppm, ±10ppm, ±20ppm, 30ppm @25°C
Frequency v Temp Characteristics ∆f/fo See drawing -10 ~ +60°C
Turnover Temperature Tm 25°C ± 5 °C
Freq. Temp. coefficient β -0.034 ±0.006ppm/°C
2
Temp Operating Range Topr -40 ~ +85 °C
Temp Storage Range Tstg -55 ~ +125 °C
Equivalent Series Resistance ESR 50KΩ max At 25 °C
Shunt Capacitance C0 1.35pF Typical
Load Capacitance C
L
6 & 12.5pF Others, please specify
Motional Capacitance C
1
0.003pF Typical
Capacitance Ratio γ 450 Typical
Drive Level DL 1µ W max
Insulation Resistance IR 500MΩ Min @ DC 100V ±15V
Aging (first year) ∆f/fo ±3ppm max 25°C ±3°C
8.0 max
3.8 max
5.5
0.5
2.5 max
0.9

1.3 4.2 1.3


1.9
1.3
1.9
Dimensions in mm
#1
#4 #3
#2Top View
Suggested Footprint
-20 -10 0 +10 +20 +30 +40 +50 +60
0
-10
-20
-30
-40
-50
-60
∆ f/fo (ppm)
Typical Temperature Characteristics