SCS Series

Introduced as the first model of Sonitron's piezoceramic speakers, the SCS-series are still being used for numerous applications. Good sound quality and limited distortion guarantee a clear reproduction of multiple tones. The piezo speaker has 60 % more net sound output per membrane surface than the electro-dynamic speaker in the function of the average current drain and average sound pressure level.

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NEW Multi-tone & Complex sound piezo speaker!

Discover our newest Piezo speaker that guarantees a clear reproduction of multiple tones. This speaker is characterized by its complex tones in which two or more simple tones can be created..

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Advantages

Very flat and solid construction
Dust, water- and shockproof front panel
Resistant to temperature variations
Broad frequency range in small sizes
Combined use as speaker/microphone
No electromagnetic field (EMC)
Little energy required at low frequencies
Less current consumption needed in the leads to the speaker
60% higher acoustic output in smaller speakers compared to electrodynamic speakers
Low weight
High impedance
Can be driven directly by IC

Applications


Medical Equipment	Communication equipment	Computer equipment	Paying systems


Home equipment	Industrial equipment	Flight instrumentation	Multimedia equipment

Products

Model	Frequency range	Peak frequency SPL	Capacitance +/-20%	Operating voltage	Impedance @1KHz +/-20%	Weight
SCS – 17	1500 – 8000Hz	2200 Hz – 92 dB 5000 Hz – 91 dB	20nF	Sine wave Square wave	5 to 30 Vpp 5 to 21 Vpp	7957 ohm	1.7 g
SCS – 24	1000 – 8000 Hz	800 Hz – 68 dB 1600 Hz – 95 dB 4000 Hz – 87 dB	37 nF	Sine wave Square wave	5 to 30 Vpp 5 to 21Vpp	4300 ohm	4 g
SCS – 32	500 – 8000 Hz	650 Hz – 85 dB 2700 Hz – 100 dB 3700 Hz – 88 dB 7500 Hz – 80 dB	66 nF	Sine wave Square wave	5 to 30 Vpp 5 to 21 Vpp	2400 ohm	5.9 g

Model

Frequency range

Peak frequency

SPL

Capacitance

+/-20%

Operating voltage

Impedance

@1KHz

+/-20%

Weight

SCS – 17

1500 – 8000Hz

2200 Hz – 92 dB

5000 Hz – 91 dB

20nF

Sine wave

Square wave

5 to 30 Vpp

5 to 21 Vpp

7957 ohm

1.7 g

SCS – 24

1000 – 8000 Hz

800 Hz – 68 dB

1600 Hz – 95 dB

4000 Hz – 87 dB

37 nF

Sine wave

Square wave

5 to 30 Vpp

5 to 21Vpp

4300 ohm

4 g

SCS – 32

500 – 8000 Hz

650 Hz – 85 dB

2700 Hz – 100 dB

3700 Hz – 88 dB

7500 Hz – 80 dB

66 nF

Sine wave

Square wave

5 to 30 Vpp

5 to 21 Vpp

2400 ohm

5.9 g

*All measurements are made in free air @30cm using a 30Vpp sine wave.

**The speakers were mounted in a box with dimensions 40x15x5cm.

Operating temperature	-20°C to +60°C
Storage temperature	-40°C to +60°C
Case material	ABS (UL rating: 94 HB) for pin-version, PPS ( UL rating: 94 V0/5V) for SMD versions,
Standard color of case	Black

Impedance

Theoretical the main impedance of the piezo speakers is a capacitive reactance and follows an asymptotic function.

The typical practical impedance values (+/-20%) for frequencies of 100 Hz up to 20kHz of our speakers are as follows:

Model	SCS-17	SCS-24	SCS-32
Capacitance	20 nF	37 nF	66 nF
Z (0.1kHz)	79577 ohm	43000 ohm	24114 ohm
Z (1 kHz)	7957 ohm	4300 ohm	2411 ohm
Z (2 kHz)	3978 ohm	2150 ohm	1205 ohm
Z (5 kHz)	1591 ohm	860 ohm	482 ohm
Z (10 kHz)	795 ohm	430 ohm	241 ohm
Z (15 kHz)	530 ohm	286 ohm	161 ohm
Z (20 kHz)	397 ohm	215 ohm	121 ohm

SCS series

Sound pressure level vs frequency

*Pink noise measurements are made in free air.

**The speakers were mounted in a box with dimensions of 40x15x5 cm.

Dimensions ( all dimensions in mm)

Standard options

Option code	example	Description
SP02	SCS-32-P10/SP02	Contains heavy-duty wires ( plastic insulation), connection sealed with silicone
FP175	SCS-24-S-FP	Acoustic stabilization Foam Patch, easy to stick. For: SCS-24-P10/ SCS-24-S
FP245	SCS-32-S-FP	Acoustic stabilization Foam Patch, easy to stick. For: SCS-32-P10/ SCS-32-S

Option code

example

Description

SP02

SCS-32-P10/SP02

Contains heavy-duty wires ( plastic insulation), connection sealed with silicone

FP175

SCS-24-S-FP

Acoustic stabilization Foam Patch, easy to stick.

For: SCS-24-P10/ SCS-24-S

FP245

SCS-32-S-FP

Acoustic stabilization Foam Patch, easy to stick.

For: SCS-32-P10/ SCS-32-S

!! Other options can be made based on your requirements, please contact our support team at support@sonitron.be

Product codification

List of available products

Mounting guidelines

The SCS speakers can be mounted in several different ways. The recommended mounting methods illustrated below are the best ways to mount all the SCS speaker models.