CST-931AP

Alarms, Buzzers, And Sirens Overview

The CST-931AP is an externally driven magnetic audio transducer manufactured by Same Sky. It operates at a resonant frequency of 2.73 kHz with an operating current of 80 mA. The device produces a sound pressure level of 85 dB at 3 V measured at 10 cm, or 92 dB under specific test conditions. It features a 9 mm diameter and 4.5 mm height, utilizing through-hole PC pins for mounting. The unit supports an operating voltage range of 2 to 4 V and functions within a temperature range of -30°C to 70°C.

Alarms, Buzzers, And Sirens Feature Summary

• Externally driven magnetic design for simple circuit integration
• Through-hole mounting configuration using PC pins
• Compact physical dimensions suitable for space-constrained applications

Alarms, Buzzers, And Sirens Applications

• General purpose audible signaling in electronic devices
• Status indication in consumer electronics
• Simple alarm systems requiring low power consumption

Alarms, Buzzers, And Sirens Procurement Notes

Verify the exact acoustic output specification required for your application, as datasheets may list both 85 dB and 92 dB depending on measurement distance and duty cycle. Confirm that the through-hole package style matches your PCB layout. Ensure the driving circuit can supply the specified 80 mA operating current at the chosen voltage within the 2 to 4 V range. Check for RoHS compliance requirements if applicable to your manufacturing standards.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a compact, low-cost magnetic buzzer is needed for basic audio indication. It is suitable for designs where external drive circuits are available to generate the necessary square wave signal. Consider the 9 mm diameter constraint during mechanical design. This part is appropriate for non-critical reliability applications, as it is not warranted for use in equipment requiring extremely high reliability levels.

Alarms, Buzzers, And Sirens Part Context

This component belongs to the Same Sky (formerly CUI Devices) CST series of audio transducers. The series offers various magnetic and piezoelectric options for different acoustic and electrical requirements. Same Sky provides these solutions for interconnect, audio, and sensor markets. The company rebranded from CUI Devices, maintaining product continuity while updating corporate identity.

Alarms, Buzzers, And Sirens Replacement Considerations

The CST-931RP-A is a related model in the same series with similar magnetic characteristics. Verify pin compatibility and acoustic output differences before substitution. No other direct cross-references are confirmed in public documentation.