Active Buzzer 3V, 2.3kHz

The TMB-12A03 active buzzer is an electronic signaling component designed for acoustic alerts in low-voltage DC circuits. Thanks to its built-in tone generator, it requires DC power within the specified range to operate and is suitable for simple sound signaling of statuses, alarms, or confirmations in electronic devices.

Technical Specifications

• Type: TMB-12A03
• Design: Active buzzer
• Operating voltage: 2.5-4V DC
• Rated voltage: 3V DC
• Maximum current: 35 mA
• Frequency: 2300 ± 300 Hz
• Sound output: 85 dB at 10 cm distance
• Operating temperature: -20 to 70 °C
• Dimensions: 12 x 9.5 mm

Features and Characteristics

• Active design with an integrated sound generator.
• Emits a tone when DC power is applied within the specified range.
• Compact cylindrical housing suitable for integration into electronic devices.
• Through-hole design for PCB mounting.
• Designed for low-voltage DC circuits.

Ideal For

• Acoustic signaling in electronic projects.
• Status indication in control and command circuits.
• Sound alerts in measuring, testing, and development equipment.
• Educational and prototyping applications with low-voltage power supplies.

Package Contents

• 1x TMB-12A03 active buzzer

Why Choose This Product

• Features an active design, so no external tone generator is required for basic sound signaling.
• The specified power range matches low-voltage DC applications.
• Small dimensions make it easy to integrate into compact electronic assemblies.
• Parameters for frequency, current, volume, and operating temperature are specified exactly for the TMB-12A03 model.

Installation and Operating Instructions

• When connecting, observe the pin polarity marked on the component or in the wiring documentation.
• Power only with DC voltage within the specified range.
• Mount the component so that the pins are not subjected to mechanical stress.
• Perform soldering and assembly in accordance with standard practices for handling electronic components.

Safety Warnings

• Do not connect to mains voltage.
• Exceeding the permitted supply voltage or incorrect polarity may damage the component.
• Prevent short circuits of the pins and overheating during soldering.
• Installation into electrical equipment should be performed by a person knowledgeable in wiring electronic components.