CMI-1275-03TH

Overview

The CMI-1275-03TH is a through-hole electromagnetic buzzer from Same Sky, designed for board-mount audio indication. It operates at a rated voltage of 3 VDC with a current draw of 30 mA. The device produces a sound pressure level of 85 dBA at 3V and 10cm distance, emitting a tone at a frequency of 2.7 kHz. Its physical dimensions are 12 mm in diameter by 7.5 mm in height, featuring solder pin termination for PCB integration.

Feature Summary

• Internally driven magnetic design eliminates the need for external oscillating circuits
• Through-hole construction with PC pins for secure board mounting
• Compact cylindrical form factor suitable for space-constrained enclosures

Applications

• Electronic appliance status indicators
• Portable device alert systems
• Industrial control panel signaling

Procurement Notes

Verify the specific voltage rating (3V) against your system requirements to ensure compatibility. Confirm that the through-hole footprint matches your PCB layout. Check RoHS compliance documentation if required for your manufacturing standards. Ensure the operating environment does not exceed the component's thermal limits.

Selection Notes

Select this model when an internally driven solution is preferred to simplify circuit design. The 3V rating suits low-voltage battery-operated applications. Consider the 85 dB output level for audible alerts in moderate noise environments. Verify that the 12mm diameter fits within the designated housing or panel cutout constraints.

Part Context

This component belongs to the CMI series of magnetic audio indicators manufactured by Same Sky, formerly known as CUI Devices. The series offers various voltage options and acoustic outputs. This specific part represents the 3V variant within the 12mm diameter family, providing a standardized solution for basic audio alerting needs across consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 3V, 12mm through-hole buzzers from the same manufacturer, such as the CMI-1275-05TH (note: different voltage). Cross-brand replacements must match the 12mm diameter, 7.5mm height, 3V DC rating, and through-hole pin configuration to ensure mechanical and electrical compatibility.