ACT38

Tel: 0044 (0)118 979 1238 Fax: 0044 (0)118 979 1283 E-mail: info@actcrystals.com ACT38 (For MHz frequencies in this package please see ACT39/38A) The ACT38 is a miniature cylindrical package offering high vibration and shock resistance together with high stability. It is most suitable for portable equipment and close packing density. The series offers a wide, low frequency range and is popular for use in Microprocessor, Consumer and Instrumentation applications Specification Parameter Frequency Range Frequency Tolerance @25°C Turnover Temperature Freq. Temp. coefficient Temp Operating Range Temp Storage Range Equivalent Series Resistance Shunt Capacitance Load Capacitance Motional Capacitance Drive Level Q Factor Insulation Resistance Aging Symbol fo Δf/fo Tm β Topr Tstg ESR C0 CL C1 DL Qf IR Fa Specification 30.00 ~ 100KHz ±20ppm typical (5 to 100ppm available) 25°C ±5°C -0.034 ± 0.005ppm / °C² max -10 ~ +60°C -40 ~ +85°C 20~40KΩ 1.8pF max 12.5pF (Others available.) 3.0fF typical 1.0μ W max 60,000 typical 500MΩ Min ±5ppm Condition Please specify @ 25°C Please specify ( Typical ) @ 25°C ±3°C DIMENSIONS (mm) Please note that all parameters can not necessarily be specified in the same device Customer to Specify : Frequency, Frequency Tolerance, Operating Temperature Range & 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, Berks, RG41 2EY, UK http://www.actcrystals.com Issue : 2 C1 Date : 07/09/04 1 of 2 Tel: 0044 (0)118 979 1238 Fax: 0044 (0)118 979 1283 E-mail: info@actcrystals.com ACT38 SOLDERING of CYLINDER CRYSTALS Lead wire should be soldered within 10seconds with the iron having a tip temperature of less than 270°C. Can must not exceed 150°C With regard to wave soldering it is recommended that the process is carried out with the crystal unit set upright on the circuit board. Should the process be carried out with the crystal unit on its side then steps must be taken to prevent heat transfer through the can. Should the whole crystal unit be heated (in a re-flow oven for example) it will result in amarked deterioration of the performance or even failure to oscillate. This is due to the internal construction of the crystal unit which involves the use of solder. Please note that all parameters can not necessarily be specified in the same device Customer to Specify : Frequency, Frequency Tolerance, Operating Temperature Range & 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, Berks, RG41 2EY, UK http://www.actcrystals.com Issue : 2 C1 Date : 07/09/04 2 of 2