SMB Series

Sonitron SMB-series ( multi-frequency buzzers) offer the possibility to program several different frequencies. These audible signals with multi-frequency programmability will become an important component that must be considered in every design of equipment, machines, household equipment, computers, communication equipment, control panels, etc.

Download sheet

Download 3D model

Advantages

Low cost
Solid-state reliability
No EMC
Very low current consumption
Panel and PCB mountable
Free programmable
Easy integration in existing circuits
Small dimensions
Thin profile

Applications


Automatic doors	Portable equipment	Clocks & Timers


Control panels	Answering equipment	Toys & Games

Products

Model	SPL * (dB(A)	Frequency +/- 15% (Hz)	Peak frequencies SPL **	Operating voltage (Vdc)	Weight (g)
SMB – 17 CC	See graph	See graph	2250 Hz – 79 dB(A) 1670 Hz – 71 dB (A) 785 Hz – 69 dB (A) 325 Hz – 64 dB (A)	1.5 to 15	2
SMB – 32 CC	See graph	See graph	2250 Hz – 76 dB (A) 1260 Hz – 89 dB (A) 785 Hz – 68 dB (A) 325 Hz – 66 dB (A)	1.5 to 15	8

Model

SPL *

(dB(A)

Frequency

+/- 15% (Hz)

Peak frequencies

SPL **

Operating voltage (Vdc)

Weight (g)

SMB – 17 CC

See graph

2250 Hz – 79 dB(A)

1670 Hz – 71 dB (A)

785 Hz – 69 dB (A)

325 Hz – 64 dB (A)

1.5 to 15

SMB – 32 CC

See graph

2250 Hz – 76 dB (A)

1260 Hz – 89 dB (A)

785 Hz – 68 dB (A)

325 Hz – 66 dB (A)

1.5 to 15

*The current consumption decreases when the frequency is lowered. See graph ‘Current consumption vs. Frequency’.

** The given sound pressure values are measured @12 Vdc @30cm distance in free air and have an accuracy of +/- 15%. Default factory setting of the SMB models: continuous tone

Operating temperature	-40°C to +85°C
Storage temperature	-40°C to +85°C
Lifetime (at 21°C)	Click the link to see how you can strengthen the lifetime of your sonitron component + optional options (https://www.sonitron.be/soundcomponentlifetime/)
Case material	PBT (Url rating: 94 HB ) for pin-version PPS (Url rating: 94 V0/5V) for SMD-version
Standard color of case	Black

Frequency vs external capacitor (c)

*Sound pressure level vs external capacitor (c)

Dimensions (All dimensions are in mm)

Standard product options

Option code	example	Description
FP13	SMB-17CC-P10-FP	Acoustic stabilization Foam Patch, easy to stick For: SMB-17CC-P10
FP24	SMB-32CC-S-FP	Acoustic stabilization Foam Patch, easy to stick For: SMB-32CC-P10/ SMB-32CC-S

Option code

example

Description

FP13

SMB-17CC-P10-FP

Acoustic stabilization Foam Patch, easy to stick

For: SMB-17CC-P10

FP24

SMB-32CC-S-FP

Acoustic stabilization Foam Patch, easy to stick

For: SMB-32CC-P10/ SMB-32CC-S

*Add an option by mentioning the suffix to the model of the SMB series!

!! 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

Working principle

In order to realize different frequencies with the SMB multi-frequency buzzers, the customer should simply connect a capacitor between the control pin and the ground. It is also possible to disable the SMB, by putting a resistor (47K) to the ground (INHIBIT).

Typical application description

With the circuit shown below, 16 possible frequencies can be generated. The value of C1, C2, C3,…with their respective frequencies are given in the graph ‘frequency vs.external capacitor.

This typical application description is not limited to the typical components we have illustrated. Many other possibilities exist to select and switch the capacitors and/or the resistor.