transducer (electro-mech) SMT-0540-T-7-R j.d. c.w. b.r. 6/4/2010 - designed by checked by approved by drawn date 1 / 1 edition sheet date 6/18/2008 date 6/18/2008 date 6/18/2008 unless otherwise specified: dimensions are in millimeters, tolerances are 0.5 and angles are 3. SMT-0540-T-7-R.idw a3 size revision history ltr description date approved - released from engineering 6/18/2008 a revised to inventor 3-d drawing template 6/4/2010 b.r. specifications parameters values unit rated voltage 3 vp-p operating voltage range 2 ~ 4 vp-p rated current (max) 100 ma coil resistance 12 2 ohm minimum spl @ 10 cm 78 dba resonant frequency 4,000 500 hz operating temperature -30 ~ +70 c storage temperature -40 ~ +85 c housing material lcp - terminal material au plated phosphor bronze - weight 0.25 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. 4. date code: a. first digit represents the no. of the year. b. last digit represents the month. (a-jan~l-dec.) 0.7 ` 0.05 (3) 0.7 ` 0.1 (3) 5.5 max. 0.8 ` 0.2 (3) 2 ` 0.1 n 0.6 sound emission hole 1.1 5 5 1.95 4.2 max. pui 0 d polarity mark 4a 4b dummy lead yoke plate lead (+) lead (-)
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