b ( 3 : 1 ) detail "c" transducer (electro-mech) SMT-0821-T-R j.a.f. b.r. e.p. 10/26/2008 - designed by checked by approved by drawn date 1 / 1 edition sheet date 9/16/2005 date 9/16/2005 date 9/16/2005 unless otherwise specified: dimensions are in millimeters, tolerances are 0.5 and angles are 3. SMT-0821-T-R.idw a3 size c revision history ltr description date approved - released from engineering 9/16/2005 a revised lower housing 10/8/2008 b.r. b revised to inventor 3-d drawing template 10/26/2008 e.p. specifications parameters values units rated voltage (square wave) 3.6 vp-p operating voltage range 2 ~ 5 vp-p rated current (max) 90 ma coil resistance 15 3 ohm minimum spl @ 10 cm 87 dba resonant frequency 2,100 500 hz operating temperature -30 ~ +70 c storage temperature -40 ~ +85 c housing material lcp - terminal material sn plated phosphor bronze - weight 0.43 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. 8.5 ` 0.2 8.5 ` 0.2 4 ` 0.1 1.5 ` 0.1 (3) 0.3 ` 0.1 (3) n 2 sound emission hole polarity pad(+) dummy pad dummy pad polarity pad (-) 0.11 ` 0 0.1 ` 0 k o r e a o 7 a t 0 8 2 1 t r p u i bottom of transducer pad
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