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)
n2 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
