CMT-1209-390T

Alarms, Buzzers, And Sirens Overview

The CMT-1209-390T is a magnetic electromagnetic buzzer manufactured by Same Sky. It features a rated voltage of 3 V and operates at a frequency of 2.048 kHz. The device produces a sound pressure level of 90 dBA at 3V measured at 10cm, with a current rating of 65 mA. It utilizes through-hole PC pin termination for PCB mounting. The physical dimensions are 12 mm in diameter and 9 mm in depth.

Alarms, Buzzers, And Sirens Feature Summary

• Externally driven magnetic transducer design
• Through-hole PC pin termination for board mounting
• Round acoustic profile

Alarms, Buzzers, And Sirens Applications

• Electronic equipment status indication
• General purpose audio alerts
• Control panel signaling

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix and manufacturer designation when sourcing, as the component originates from Same Sky, formerly known as CUI Devices. Confirm that the application circuit provides external drive signals, as this unit lacks internal oscillator circuitry. Ensure mechanical clearance accommodates the 12mm diameter and 9mm height constraints on the target printed circuit board layout.

Alarms, Buzzers, And Sirens Selection Notes

Select this component for applications requiring a simple, externally driven acoustic signal source. It is suitable for low-profile designs where through-hole mounting is preferred over surface mount alternatives. Consider the 65 mA current draw when designing power supply rails and driver transistor capabilities to ensure stable operation within the specified 3 V nominal voltage range.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the CMT series of audio indicators produced by Same Sky. The series includes various sizes and drive configurations. This specific model represents a standard round magnetic buzzer variant designed for general-purpose audible notification in consumer and industrial electronics.

Alarms, Buzzers, And Sirens Replacement Considerations

Direct substitutes include other 3V, 2.048kHz through-hole magnetic buzzers from manufacturers such as NMB Technologies or Murata. Verify dimensional compatibility and electrical characteristics before substitution.