mallory sonalert products inc. part # AST1109MLQ sales outline drawing revision b 4411 south high school road, indianapolis, indiana 46241 usa phone (317) 612 - 1000 fax (317) 612 - 1010 http://www.mallory - sonalert.com specifications: oscillation frequency (hz) 4100 500 operating voltage (vp - p) 1 ~ 20 rated voltage (vp - p) 5.0 current consumption max. (ma) 1.0 at rated voltage sound pressure level (db/min) 73 at 10cm at rated voltage capacitance (pf) 12 000 30% at 1 0 0 hz operating temperature (c) - 20 ~ +70 storage temperature (c) - 30 ~ +80 type of connection terminal smd housing lcp plastic resin (color : black ) weight (grams) 0.25 condition by reflow soldering (c) 245 5 / 1 min condition by hand soldering (c) 350 20 / within 5 sec options for other options contact factory dimensions: (units: mm) rohs compliant packaging: parts are supplied on cut - tape. units do not come with wash label and are not appropriate for aqueous wash.
ast 1 109mlq & ast1109mltrq direct drive transducer operation : direct drive t ransducer devices do not have any included dc circuitry, so the user mus t apply a sine or square wave with the appropriate rated frequency. a square wave will typically re sult in more sound level than a sine wave . the higher the peak - to - peak voltage applied (up to the maximum rated voltage), the hig her the resulting sound level. frequency response :
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