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Active Buzzer TMB12A03

R4,95

100 in stock

Description

🔍 Technical Specifications

  • Model: TMB12A03

  • Type: Active/emitter buzzer (built‑in oscillator)—beeps continuously when DC voltage is applied

  • Rated Voltage: 3 V DC (operable within 1.5–4 V DC range)

  • Rated Current: typically, < 30 mA (25 mA max according to some sources)

  • Sound Pressure Level (SPL): ~85 dB at 10 cm (variously 82–85 dB reported)

  • Frequency: ~2.3 kHz (2,300 ±300 Hz)

  • Dimensions: ~12 mm diameter, ~9.5–9.8 mm height, pin pitch ~7.6 mm

  • Operating Temperature: –20 °C to +70 °C

  • Mounting: Through‑hole with two straight leads—breadboard/PCB friendly

🧠 Behavior & Usage

  • The active buzzer has an internal oscillating circuit, so applying a constant DC voltage (3 V) results in a continuous tone—no external PWM needed

  • Arduino forum advice:

    “The TMB12A03 is an active buzzer. You shouldn’t pulse it. Apply a constant DC voltage to activate the buzzer.”


📊 Quick Comparison Table

Parameter Value
Operating voltage 1.5–4 V DC (nominal 3 V DC)
Current draw < 30 mA (up to 25 mA typical)
Tone frequency 2,300 ± 300 Hz
Sound level ~85 dB @10 cm
Size (D×H) 12 mm × ~9.5 mm
Mounting Through-hole (2-pin)
Temp. range –20 °C to +70 °C

✅ Applications

The TMB12A03 is ideal for any audible alert use-case, including:

  • Microcontroller alarms (Arduino, Raspberry Pi)

  • Security systems and smoke detectors

  • Toys, timers, appliances, industrial indicators

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