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A ( 14 : 1 ) A Transducer (Electro-Mech) SMT-1220-TW-R Designed by Checked by Approved by Drawn Date Edition Sheet Date 5/17/2006 Date 5/18/2006 Date 5/18/2006 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS, TOLERANCES ARE “0.5 AND ANGLES ARE “3ƒ. SMT-1220-TW-R.idw SIZE

REVISION HISTORY

LTR DESCRIPTION DATE APPROVED - RELEASED FROM ENGINEERING 5/17/2006 A REVISED TO INVENTOR 3-D DRAWING TEMPLATE 11/7/2007 B.R. B ADDED DETAIL VIEW OF TERMINAL LAYOUT 8/10/2011 B.R. SPECIFICATIONS PARAMETERS VALUES UNIT RATED VOLTAGE (SQUARE WAVE) 3 Vp-p OPERATING VOLTAGE RANGE 2 ~ 5 Vp-p RATED CURRENT (MAX) 35 mA COIL RESISTANCE 47 “ 7 OHM MINIMUM SPL @ 10 CM 80 dBA RESONANT FREQUENCY 2,000 “ 200 Hz OPERATING TEMPERATURE -40 ~ +85 ƒC STORAGE TEMPERATURE -40 ~ +85 ƒC HOUSING MATERIAL PPS - TERMINAL MATERIAL Au PLATED BRASS - WEIGHT 2 grams THIS DOCUMENT CONTAINS DATA PROPRIETARY TO PROJECTS UNLIMITED, INC. ANY USE OR REPRODUCTION, IN ANY FORM, WITHOUT PRIOR WRITTEN PERMISSION OF PROJECTS UNLIMITED, INC. IS PROHIBITED. ‹2003, Projects Unlimited Inc. NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. SPECIFICATIONS SUBJECT TO CHANGE OR WITHDRAWL WITHOUT NOTICE. 3. THIS PART IS RoHS 2002/95/EC COMPLIANT. REMOVABLE WASH TAB P2.2 SOUND EMISSION HOLE 9 0.2 B0.1 15.2 P12 2 B0.1 1.6 B0.2 EPOXY POTTING 0.15 MAX. 0.15 MAX.