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CEM-1203(42)

CEM-1203(42)

Same Sky (Formerly CUI Devices)
Buzzers Transducer, Externally Driven Magnetic 3.5 V 35mA 2.048kHz 85dB @ 3.5V, 10cm Through Hole PC Pins
Active62,106 in stock
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Overview

The CEM-1203(42) is a 12mm magnetic transducer buzzer designed for through-hole mounting. It requires an external square wave drive signal to produce an audible tone, typically operating at a resonant frequency of 2.048kHz to deliver sound pressure levels up to 85dB at 10cm.

Why Choose This Part

This transducer offers a compact 12mm footprint with a high 85dB output while maintaining a low current consumption of 35mA at 3.5V. Its externally driven magnetic technology allows engineers to vary the tone and frequency by adjusting the input PWM signal.

Applications

User Interface Feedback
Provides audible confirmation for button presses and user input on industrial control panels.
Status Indicators
Generates distinct alert tones for system faults or task completion in laboratory equipment.
Consumer Appliances
Used in microwave ovens, timers, and security panels where a clear, mid-frequency alert is required.

Key Specifications

Frequency 2.048kHz
Input Type Zero-Peak Signal
Technology Magnetic
Termination PC Pins
Mounting Type Through Hole
Port Location Top
Voltage Range 3 ~ 5V
Operating Mode Single Tone
Voltage - Rated 3.5 V
Current - Supply 35mA
Driver Circuitry Transducer, Externally Driven
Size / Dimension 0.472" Dia (12.00mm)
Height - Seated (Max) 0.354" (9.00mm)
Operating Temperature -20degC ~ 60degC
Sound Pressure Level (SPL) 85dB @ 3.5V, 10cm

Getting Started

To drive this component, connect the positive pin to a GPIO capable of generating a 2.048kHz square wave and the negative pin to ground, typically using a transistor or MOSFET buffer to handle the 35mA current. Ensure a 1/2 duty cycle square wave is used at the rated voltage of 3.5V for optimal performance.

Also Consider

PS1240P02BT TDK Corporation - A piezoelectric alternative that offers much lower current consumption for battery-powered applications.
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