CPT-308-28-85T

Alarms, Buzzers, And Sirens Overview

The CPT-308-28-85T is an externally driven piezoelectric audio transducer manufactured by Same Sky. It features a 30 mm diameter design with a seated height of 6.98 mm, utilizing through-hole PC pin termination for PCB mounting. The component operates on a DC input type with a rated voltage of 12 V and a functional range of 5 to 28 V. It draws 12 mA current at the rated voltage and produces a sound pressure level of 70 dB. The device generates an acoustic signal at a frequency of 1.2 kHz.

Alarms, Buzzers, And Sirens Feature Summary

• Externally driven piezoelectric transducer architecture
• Through-hole mounting configuration with PC pins
• Wide operational voltage tolerance from 5 V to 28 V

Alarms, Buzzers, And Sirens Applications

• Industrial alarm systems
• Commercial appliance status indicators
• General purpose audible alerts

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix '85T' against the official Same Sky datasheet to confirm the exact acoustic tuning and terminal plating specifications. Ensure the driving circuit can supply the required 12 mA current at 12 VDC. Confirm that the 30 mm diameter footprint and 6.98 mm height are compatible with the target enclosure constraints before finalizing the bill of materials.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a robust, high-output audible indicator is required for environments where external drive circuits are available. The wide voltage range allows flexibility in power supply design compared to fixed-voltage buzzers. Consider the physical size constraints due to the 30 mm diameter and the need for sufficient clearance above the PCB surface for the 6.98 mm profile.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the CPT series of piezoelectric buzzers from Same Sky, formerly associated with CUI Devices. The series offers various sizes and acoustic outputs. This specific model represents a mid-sized 30 mm transducer designed for applications requiring higher sound pressure levels than smaller surface-mount alternatives, leveraging through-hole technology for mechanical stability.

Alarms, Buzzers, And Sirens Replacement Considerations

Direct substitutes must match the 30 mm diameter, 1.2 kHz frequency, and 70 dB output. Verify that alternative parts support the 5-28 V operating range and through-hole PC pin termination. Cross-reference dimensions to ensure fit within existing board layouts.