Tel : Fax : email : 0044 (0)118 979 1238 0044 (0)118 979 1283 [email protected] 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 Frequency Range Frequency Tolerance Symbol fo Δf/fo Specification 30.00 ~ 200KHz ±10ppm ~ 100ppm Frequency v Temp Characteristics Δf/Fo See drawing Turnover Temperature Freq. Temp. coefficient Temp Operating Range Temp Storage Range Equivalent Series Resistance Shunt Capacitance Load Capacitance Motional Capacitance Drive Level Insulation Resistance Soldering reflow Aging (first year) Tm β Topr Tstg ESR C0 CL C1 DL IR 25°C ±5°C -0.04ppm / °C² max -10 ~ +60°C std ( -40 ~ +85°C available) -20 ~ +70°C std 50kΩ max** 2.0pF max 10 ~ 25.0pF 4.0 fF max 1.0μ W max 500MΩ Min see diagram: page 2 ±5ppm / first year Fa Condition Please specify Please specify -10 ~ +60°C Please specify Others available, please enquire. @ 25°C Please specify. 25°C ±3°C ** 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 Tel : Fax : email : 0044 (0)118 979 1238 0044 (0)118 979 1283 [email protected] ACT250SMX-4 TAPE AND REEL DIMENSIONS (mm) Standard Reel Size 2000 pieces 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 Page 2 of 2 Issue : 6 C1b Date : 8-11-2006