Buzzer Datasheet: A Detailed Explanation

Published on March 4, 2022 , Last modified on October 24, 2024

by Hommer Zhao

Contents

1 Buzzer Pin Configuration
2 The Features of Buzzer
3 How to use a Buzzer
4 Buzzer Alternatives
5 Applications
6 Conclusion

Buzzer Pin Configuration

Diagram: A Buzzer

Source: Created using Krita

The buzzer had two pins. First, one pin is positive and has the positive sign (+). A 6V DC voltage powers pin 1.

The second pin is the negative pin identified by the (-) symbol. In addition, this pin has a short terminal lead. It is usually connected to the ground terminal of the electronic circuit.

The Features of Buzzer

First, a buzzer usually has a rated DC voltage of 6V. However, its operating DC voltage ranges between 4 to 8V. In addition, it has a rated current of less than 30mA.

Also, note that the buzzer has a resonant frequency of about 2300 Hz to 3300 Hz.

Other specifications of a buzzer include:

Operating temperatures of between -20°C to 60°C
A sound pressure level of 85dBA

How to use a Buzzer

Description: A perf board

Source: Google Creative Commons

Buzzers exist in two types. The first type produces a continuous beep sound. Also, you can refer to this type of buzzer as an active buzzer. Next, the second type of buzzer is the readymade buzzer.

The readymade buzzer is different from the active buzzer such that it is much bulkier. Also, this type of buzzer works with an internal oscillating circuit, and it produces a beep.

For this buzzer, the power range should be between 4V and 9V. Therefore, you should use a 9V battery and regulate the supply between +5V and +6V.

Generally, the circuit that has the buzzer usually has a 0N/OF switch, which you can use as the control.

The most commonly used buzzer is the one that produces a continuous sound. This is because it is easy to customize to fit several applications compared to the readymade buzzer.