Tel :
Fax :
email :
0044 (0)118 979 1238
0044 (0)118 979 1283
info@actcrystals.com
ACT250SMX-4
The ACT250SMX-4 is an ultra miniature surface mount 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.
Specification
Parameter
Symbol
fo
Specification
Condition
Frequency Range
Frequency Tolerance
30.00 ~ 200KHz
±10ppm ~ 100ppm
Please specify
Please specify
Δf/fo
Frequency v Temp Characteristics
See drawing
-10 ~ +60°C
Δf/Fo
Turnover Temperature
Freq. Temp. coefficient
Temp Operating Range
Temp Storage Range
Equivalent Series Resistance
Shunt Capacitance
Load Capacitance
Tm
β
Topr
Tstg
ESR
C0
25°C ±5°C
-0.04ppm / °C² max
-10 ~ +60°C std ( -40 ~ +85°C available)
-20 ~ +70°C std
50kΩ max**
Please specify
Others available, please enquire.
@ 25°C
2.0pF max
CL
10 ~ 25.0pF
Please specify.
25°C ±3°C
Motional Capacitance
Drive Level
C1
4.0 fF max
DL
1.0μ W max
500MΩ Min
see diagram: page 2
±5ppm / first year
Insulation Resistance
Soldering reflow
IR
Aging (first year)
Fa
** For the ESR specification on specific frequencies please enquire.
Pad Surface
Material
Sn/Cu
Please note that all parameters can not necessarily be specified in the same device
Customer to specify : Frequency, Frequency tolerance, Operating Temperature, Load capacitance
In line with our ongoing policy of product evolvement and improvement, the above specification may be subject to change without notice
ISO9001:2000 Registered
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berkshire, RG41 2EY, UK
http://www.actcrystals.com
Issue : 6 C1b
Date : 8-11-2006
Page 1 of 2
ACT [ ADVANCED CRYSTAL TECHNOLOGY ]
