CMT-0904-85T

Alarms, Buzzers, And Sirens Overview

The CMT-0904-85T is an externally driven magnetic audio buzzer manufactured by Same Sky. It operates at a nominal voltage of 3V with a current draw of 90mA. The device produces a sound pressure level of 85dB when measured at a distance of 10cm under 3V conditions. Its resonant frequency is specified at 2.73kHz. The component utilizes through-hole PC pin termination for PCB mounting and features a compact cylindrical form factor with a 9mm diameter and 4mm depth.

Alarms, Buzzers, And Sirens Feature Summary

• Externally driven magnetic transducer design
• Through-hole PC pin termination for reliable board mounting
• Compact cylindrical housing suitable for space-constrained enclosures

Alarms, Buzzers, And Sirens Applications

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

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific acoustic output requirements against the datasheet specifications, particularly the 85dB rating at 10cm. Confirm that the driving circuit can supply the required 90mA current at 3V without exceeding thermal limits. Ensure mechanical clearance accommodates the 9mm diameter and 4mm height dimensions during assembly.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a low-profile, cost-effective audible alarm is required for battery-operated or low-voltage systems. The 3V operating voltage makes it suitable for single-cell lithium or standard logic-level power supplies. Consider the 2.73kHz frequency for optimal human audibility in typical ambient noise environments.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the Same Sky CMT series of magnetic buzzers, which are designed for general-purpose audible signaling. The series offers various voltage and decibel ratings to suit different application needs while maintaining a standardized footprint and mounting style for easy integration into existing designs.

Alarms, Buzzers, And Sirens Replacement Considerations

Check for direct substitutes within the Same Sky CMT series that match the 3V/90mA electrical profile. Verify that any alternative maintains the same 9mm diameter and through-hole pin configuration to ensure mechanical compatibility without PCB redesign.