CEM-1212C

Overview

The CEM-1212C is a sealed, internally driven magnetic buzzer transducer manufactured by Same Sky. It operates at a nominal voltage of 12 Vdc with a current consumption of 35 mA. The device produces an acoustic output of 85 dB at 10 cm and functions at a frequency of 2.3 kHz. Constructed with a polyphenylene oxide (PPO) housing, it utilizes through-hole PC pins for PCB mounting. The unit is designed for reliable audio indication in electronic circuits.

Feature Summary

• Internally driven magnetic transducer design
• Sealed construction for environmental protection
• Through-hole mounting via PC pins

Applications

• Electronic equipment status indication
• Alarm systems requiring audible alerts
• Control panels needing compact audio feedback

Procurement Notes

Verify the specific acoustic rating and operating voltage against the official datasheet before integration. Confirm that the through-hole pin configuration matches the target PCB layout. Ensure the PPO material compatibility aligns with the assembly process requirements. Cross-reference the part number to distinguish between different drive circuit variants within the series.

Selection Notes

Select this component when a self-exciting, sealed buzzer is required for panel-mounted or PCB applications. The internal driving circuit simplifies control logic by eliminating the need for external oscillators. Consider the 85 dB sound pressure level for audibility in moderate noise environments. Verify that the 12 Vdc supply voltage is stable within the specified operating range.

Part Context

This component belongs to the Same Sky audio indicator family, specifically the magnetic buzzer series. It serves as a direct replacement for generic 12V piezo or magnetic buzzers where internal drive capability is preferred. The sealed design distinguishes it from open-frame alternatives, offering improved durability in industrial settings.

Replacement Considerations

Check pinout compatibility and acoustic output levels when substituting with other 12V magnetic buzzers. Ensure the replacement part supports through-hole mounting if PCB redesign is not feasible. Verify that the new component meets the same IP sealing standards for the intended environment.