3V Active Electromagnetic Buzzer

3V Active Electromagnetic Buzzer is a compact and energy-efficient audio signaling device that emits a continuous tone when powered. It is designed for direct operation from a 3V DC source without requiring external circuitry, making it ideal for DIY electronics, alarms, toys, and embedded systems where audible feedback is required.

Key Features:

• Active Buzzer: Built-in oscillation circuit generates tone on its own.
• Low Voltage Operation: Operates directly from 3V DC supply.
• Compact Design: Small footprint suitable for tight enclosures.
• Simple Wiring: Requires just two connections — power and ground.
• Fixed Frequency: Emits a stable audible tone, ideal for alerts and notifications.

Technical Specifications:

• Operating Voltage: 3V DC
• Sound Output: ≥85 dB at 10cm
• Resonant Frequency: ~2300 Hz
• Current Consumption: ≤30mA
• Resistance: 30 Ω
• Sound pressure(dB(A)/10cm)min.: 80
• Type: Active (self-driving)

Mechanical Specifications:

• Case Material: Plastic (Black)
• Mount Type: Through-hole PCB mount
• Operating Temperature: -20°C to +70°C

Dimensions:

• Diameter: 12mm
• Height: ~9.5mm (excluding pins)
• Pin Spacing: ~ 6-7.6mm

Pinout and Wiring:

• + Pin: Connect to 3V DC positive terminal
• – Pin: Connect to ground (GND)
• Note: Polarity must be respected for proper operation

Datasheet Reference:

• Search online for “3V Active Buzzer 12mm datasheet iFuture Technology”

Applications:

• Embedded Alerts: Add sound alert in microcontroller circuits
• Electronic Toys: Used in sound-emitting toys and games
• Security Systems: Audible output for alarms and notifications
• Timer Devices: Used for end-of-timer beeps or timeouts
• DIY Projects: Audio signaling for status or debugging

Equivalent Models:

• PS1240P02BT: 3V active buzzer from TDK, similar specs
• TDK SFM-27: Miniature 3V active buzzer with comparable sound output
• Generic 12mm Active Buzzer: Universally compatible standard-size buzzer

Package Includes:

• 1 x 3V TMB12A03 Active Electromagnetic Buzzer