40
INTRODUCTION
MULTI-APPLICATION SERIES SMA & SMAT
The Sonitron Multi-Application (SMA) series are specifically developed to meet a wide range of
requirements in sound pressure, dimensions and mounting methods. This series produce highly
reliable audible signals, giving either an extremely clear penetrating tone or a soft sound output.
Both, buzzers and transducers, are available in five sizes, 13 mm, 17 mm, 21 mm, 24 mm and 30 mm.
All SMA products are manufactured to meet various mounting styles such as through-hole or
surface mounting technologies (SMD). Therefore they are equipped with either pin or SMD
terminals.
The Multi-Application series present the following advantages:
· The octagonal housing provides alignment with pick & place machines for SMD models,
which are packed in trays and protected with a heat resistant label for automatic soldering.
· The miniature models SMA-13 and SMA-17 offer a high sound pressure level together with a
clear audible tone.
· The LT-versions of the models SMA-13, SMA-17 and SMA-21 generate an increased sound
output. The LC-versions of the same models operate at extremely low current consumption;
ideal for battery operated applications.
· The LV versions of the model SMA-21 generate an extremely loud sound output at very low
battery voltage starting at 2 Vdc up to 6 Vdc.
· Because of the same case style for buzzers and transducers with different pin pitches per
model, the user is offered a great deal of flexibility and can switch over to a buzzer or
transducer at any time.
· The piezo audio technology can be qualified as solid state, highly reliable, without EMI and is
able to withstand temperatures from -40°C to +85°C. The MTBF exceeds in reality
several times the figure indicated in this catalogue. Lifetime depends on different factors
and is described more in detail in the addendum.
41
Round
SELECTION GUIDE
42
Round
SMA SERIES
The Sonitron Multi-Application buzzers are low cost commercial
grade components for large volume applications. The SMA series
are designed to meet various requirements such as current
consumption, voltage, sound pressure, mounting methods,
connection, dimensions and packaging. They are available in five
sizes: 13 mm, 17 mm, 21 mm, 24 mm and 30 mm.
The buzzers have a built-in oscillator generating their working
frequency. They produce a highly reliable audible tone signal,
giving either an extremely clear and penetrating tone or a soft
sound for non-aggressive signals.
SPECIFICATIONS
ADVANTAGES : APPLICATIONS :
* All measurements are made in free air @ 21°C @ 30cm @ 12Vdc (Except for the SMA-21LV & SMA-30 L). Buzzers soldered
on a PCB board with dimensions of 24cmx11cm.
** SMAI 24: intermittent pulse rate of 5Hz (@ 15Vdc). All the other models have a continuous tone.
1
1
1
1
2
2
2
2
2.5
2.5
2.5
2.5
2.5
4
4
4
5
5
1.8
11.6
0.7
13 @ 3V
3.3
5
15
0.8
3.8
5
12.5
1.1
13 @ 3V
4.2
6.7
6.2
4.1
5 @ 9V
1.5 to 24
1.5 to 15
1.5 to 15
2 to 4
1.5 to 24
1.5 to 24
1.5 to 15
1.5 to 15
1.5 to 24
1.5 to 24
1.5 to 15
1.5 to 15
2 to 6
1.5 to 24
1.5 to 15
5 to 24
1.5 to 24
3 to 9
3000
3000
3000
3350
3000
3000
3000
3500
3300
3300
3300
3800
3000
3000
3000
**3500
2500
2500
75
82
81
80 @ 3V
82
88
86
89
85
91
90
91
87 @ 3V
92
98
92
87
97 @ 9V
SMA-13
SMA-13LT
SMA-13LC
SMA-13LV
SMA-17
SMA-17L
SMA-17LT
SMA-17LC
SMA-21
SMA-21L
SMA-21LT
SMA-21LC
SMA-21LV
SMA-24
SMA-24L
SMAI-24
SMA-30
SMA-30L
Automatic doors
Alarms
Gas & metal detectors
Weighing & measuring equipment
Medical instrumentation
Timers & clocks
Control instrumentation & systems
Copiers
Automobiles & trucks
Games & toys
Computer peripherals
Cash registers
Octagonal form
Models with different pin pitches
Light but solid state construction
Little power consumption, especially the
extra loud LC-versions
Wide voltage range (1,5V to 24V)
Easy mountable
SMA-13 and SMA-17 for applications
with limited space
SMD models with heat resistant label for
protection during automatic soldering
Automatic pick & place
ADVANTAGES & APPLICATIONS
43
@12Vdc (L-version working @ 6Vdc) continuous use min. 100 hours
The SMA-21 LV (PIN/SMD) working @ 3Vdc in continuous use:
min.24 hours. All tests are made @ 20°C mounted on PCB
(expected life time curve in addendum)
ELECTRICAL PARAMETERS
44
45
Order options and packaging information see page 52, 53.
PRODUCT CODIFICATION
LIST OF AVAILABLE PRODUCT TYPES
46
· Octagonal form
· Models with different pin pitches
· Light but solid construction
· Not fixed working frequency
Easily mountable
· SMAT-13 and SMAT-17 for limited space
applications
· SMD models with heat resistant labels for
protection during re-flow soldering
· Automatic pick & place
· Alarms
· Gas & metal detectors
· Measuring & weighing equipment
· Medical instrumentation
· Timers & clocks
· Instrumentation & control systems
· Copiers
· Automobiles & trucks
· Games & toys
· Cash registers
@12Vpp continuous use at resonance frequency, tested on
maximum sound pressure (eg. SMAT-21 @ 3.75 kHz). Life
expectations: min.1000 hours. All tests are made @ 20°C mounted
on PCB (expected life time curve in addendum).
SMAT SERIES
The SMAT transducers are specifically developed to meet various requirements, such as loud
sound pressure level, mounting methods, connection possibilities and dimensions. The transducers
do not have a built-in oscillator. The drive frequency must be generated with electronics outside
the transducer. Recommended drive circuits are described in this catalogue. Our transducers
produce a highly reliable audible tone signal, giving either an extremely clear and penetrating
tone or a soft sound for non-aggressive signals. They are available in five sizes: 13mm, 17mm,
21mm, 24mm and 30mm.
ADVANTAGES : APPLICATIONS :
ADVANTAGES & APPLICATIONS
SPECIFICATIONS
SMAT-13
SMAT-17
SMAT-21
SMAT-24
SMAT-30
* All measurements are made in free air @ 21°C @ 30 cm @10 Vpp (square wave). The test buzzer is soldered on a pcb
board with dimensions of 24 cm x 11 cm.
47
ELECTRICAL PARAMETERS
Peak hold frequency sweep from 1 to 8kHz
with a square wave signal of 10Vpp.
(precision of frequency: +/- 15%)
48
DRIVE CIRCUITS (typical circuits)
49
PRODUCT CODIFICATION
LIST OF AVAILABLE PRODUCT TYPES
50
DIMENSIONS SMA & SMAT-SERIES (All dimensions are in mm)
SMA(T)-13 SMA(T)-17 SMA(T)-21
51
SMA(T)-24 SMA(T)-30
52
SMA-21
sonitron
SMA-21
sonitron
MOUNTING POSSIBILITIES FOR THE SMA & SMAT SERIES
PRODUCT OPTIONS SMA & SMAT SERIES
A heat protection label standard for all SMD buzzers, in capton material glued
on the SMD model of the SMA(T) buzzer. This enables the user to pick up the buzzer
by vacuum.
During the re-flow soldering process the heat shield label remains on the buzzer
and must be removed after soldering.
To order an option add the suffix to the model number of the SMA(T)-series.
Capton
noitpircseD
elpmaxeedoC noitpO
SP01
SP02
SP04
SP05
Wash Tab
MC
FP13 FP13SR
FP17 FP17SR
FP21 FP24
FP30
SMAT-21-P10/SP01
SMAT-21-P17.5/SP02
SMA-13LC-S/SP04
SMA-24L-P17.5/SP05
SMAT-13-P7.5
+Wash Tab
SMAT-13-P10-MC
Contains heavy duty wires (plastic insulation)
(only for SMA(T)-21 and SMA(T)-24)
Contains heavy duty wires (plastic insulation), connection sealed
with silicone (only for SMA(T)-21, SMA(T)-24)
The PCB of the buzzer/transducer is secured with epoxy-
adhesive
Extended frequency control (only SMA series)
Recommended for automatic washing production process. The
PCB is secured with epoxy-adhesive+ wash tab upon the
sound-emitting hole, avoiding liquid penetration into the cavity.
TO BE REMOVED AFTER the washing process for good sound
output!!!
Acryl coating (Membrane Coating). Recommended for aggres-
sive, humid or smoggy environment.
7 different Foam Patches are available to
cover the SMA(T) series for extra acoustic
and mechanical stabilization.
See page 38, 39
53
SMA(T)-13
series
SMA(T)-17
series
SMA(T)-21
series
SMA(T)-24
series
SMA(T)-30
series
SMA(T)-13-series
SMA(T)-17-series
SMA(T)-21-series
SMA(T)-24-series
SMA(T)-30-series
SMA(T)-13 S SMA(T)-17 S SMA(T)-21 S SMA(T)-24 S SMA(T)-30 S
PACKAGING SMA & SMAT-SERIES
