Magnetic Smd Buzzer

Magnetic Smd Buzzer

Product Parameter:

Item	Unit	Specification	Condition
Oscillation Frequency	Hz	2731	Vo-p=1/2duty, square wave
Operating Voltage	Vp-p	2.5~4.5
Rated Voltage	Vp-p	3.6
Current Consumption	mA	MAX. 100	at Rated Voltage
Sound Pressure Level	dB	MIN. 80	at 10cm at Rated Voltage
Coil Resistance	Ω	16±3
Operating Temperature	℃	-30 ~ +70
Storage Temperature	℃	-40 ~ +85
Dimension	mm	7.5 x 7.5 x H2.5	See appearance drawing
Weight (MAX)	gram	0.8
Housing Material		LCP( Black )
Leading Pin		Tin-Plated Brass(Sn)	See appearance drawing
Environmental  Protection Regulation		RoHS

Dimension:

The main difference between the active buzzer and passive buzzer is active buzzer and passive buzzer, their fundamental difference is that the product has different requirements for input signals;

The ideal signal for the active buzzer to work is direct current, usually marked as VDC, VDD, etc.

Because there is a simple oscillating circuit inside the buzzer, it can convert a constant direct current into a pulse signal of a certain frequency, and the alternating magnetic field is generated from the surface, which drives the molybdenum sheet to vibrate and pronounce.

However, some active buzzers can also work under a specific AC signal, but the voltage and frequency of the AC signal are very demanding, and this working method is generally not used.

The passive buzzer does not have an internal drive circuit. Some companies and factories call it a buzzer, and it is called a buzzer in the national standard. Ideal signal square wave for passive buzzer work.

If the buzzer is not responding to the pre-DC signal, because the magnetic circuit is constant, the molybdenum sheet cannot vibrate and sound.

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