nv/sa
Excellence in physical acoustics
Sint-Niklaas – Belgium
SMA-17
+ (LC & LT version)
Multi-Application buzzer
Pagina 1 van 3
The Sonitron Multi-Application buzzers are low cost commercial grade
components for large volume applications. The SMA series are
designed to meet a wide range of current consumption, voltage, sound
pressure, mounting methods, connection, dimensions and packing
requirements. 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.
ADVANTAGES & APPLICATIONS
ADVANTAGES :
• octagonal form
• models with different pin pitches
• light but solid state construction
• little power consumption, especially the extra
loud LC-versions
• important voltage range (1,5V to 24V)
• easy mountable
• small size for applications with limited space
• SMD models with heat resistant label for
protection during automatic soldering, packed
in trays for automatic placing
APPLICATIONS :
• portable battery operating devices
• audible alarms
• gas detectors
• weighing and measuring equipment
• medical instrumentation
• timers
• control instrumentation and systems
• copiers
• automobiles
• games and toys
• computer peripherals
• cash registers
• etc.
SPECIFICATIONS
Model Sound pressure
dB(A) *
Frequency
(+/- 15%) Hz
Operating
voltage
Operating
current Weight
SMA-17 82 dB(A) 3 kHz 1.5 to 24 Vdc 3.3 mA 2 g
SMA-17LT 86 dB(A) 3 kHz 1.5 to 15 Vdc 15 mA 2 g
SMA-17LC 89 dB(A) 3.5 kHz 1.5 to 15 Vdc 0.8 mA 2 g
* All measurements are made in free air at 21°C, at 30 cm, at 12V. Buzzers soldered on a PCB
board dimensions 24 cm x 11 cm.
Operating temperature -20°C to +70°C
Storage temperature -40°C to +85°C
Life time (at 21°C) See expected life time curve in addendum
Case material ABS (UL rating: 94 HB) for pin-versions
PPS (UL rating: 94 V0/5V) for SMD-versions
Standard colour of case Grey
nv/sa
Excellence in physical acoustics
Sint-Niklaas – Belgium
SMA-17
+ (LC & LT version)
Multi-Application buzzer
Pagina 2 van 3
ELECTRICAL PARAMETERS
Sound pressure level vs. operating
voltage
Consumption vs.
operating voltage
SMA-17 +
(LT + LC Version)
All measurements are made at 30 cm in free air at 21°C.
°°: standard versions, respectively SMA-17
DIMENSIONS
SMA 17(LT + LC Version)
Pin version SMD version
nv/sa
Excellence in physical acoustics
Sint-Niklaas – Belgium
SMA-17
+ (LC & LT version)
Multi-Application buzzer
Pagina 3 van 3
PRODUCT CODIFICATION
17 L C P7.5
TP10
SMA
↓
Sonitron Multi-
Application
↓
Square
diameter
(mm)
↓
L : Loud
C : C-MOS
T : Transistor
S
↓
P : Pin distance (in mm)
S : SMD terminals
LIST OF AVAILABLE PRODUCT TYPES
Version Standard
(°°)
Loud
(L)
Transistor
(LT)
Low Current
(LC)
Intermittent
(I) (*)
Low voltage
(LV)
SMA-17 serie SMA-17 P7.5 SMA-17LT P7.5 SMA-17LC P7.5
SMA-17 P10 SMA-17LT P10 SMA-17LC P10
SMA-17 S SMA-17LT S SMA-17LC S
A heat protection label in capton material is glued on the SMD model of the SMA 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. These heat protection labels are standard for all SMD buzzers.
MODELS ON REQUEST
The SMA series can be delivered, upon special request, with the following protection :
• Wash tabs
A wash tab is glued on the sound emitting hole of the buzzer to protect it from water
penetrating into the hole of the cavity. The PCB at the back is also sealed with a silicon film.
To order this part, please add WASHTAB to the model number of the SMA series.
• Acryl coating
For applications in aggressive humid conditions, models containing a membrane with a
protective coating are available. The protective coating gives a complementary assurance
against smog. Add MC to the model number of the SMA series.
