CEP-2272A

Overview

The CEP-2272A is a piezoelectric buzzer manufactured by Same Sky, designed for through-hole mounting on printed circuit boards. This component features a round form factor with a diameter of 22 mm and an overall height of 7.2 mm. It operates at a nominal voltage of 5 VDC and draws a current of 10 mA. The device produces a sound pressure level of 85 dB when measured at a distance of 10 cm. Its resonant frequency is specified at 2.7 kHz, providing a distinct audible tone for alert applications.

Feature Summary

• Piezoelectric transducer technology ensures reliable acoustic output without requiring complex drive circuits.
• Through-hole solder pin termination facilitates secure mechanical attachment and electrical connection to PCBs.
• Compact cylindrical housing design allows for integration into space-constrained electronic enclosures.

Applications

• Audible alerts in consumer electronics such as timers and kitchen appliances
• Status indication in industrial control panels and instrumentation
• Warning signals in home security systems and smoke detectors

Procurement Notes

Verify the specific suffix codes against the manufacturer datasheet to confirm exact electrical tolerances and acoustic characteristics. Ensure that the operating voltage aligns with the system's power supply rails to prevent damage or insufficient sound pressure. Confirm RoHS compliance requirements if the end product mandates restricted substance adherence. Cross-reference the mounting hole dimensions with the PCB layout to guarantee proper fit during assembly.

Selection Notes

Choose this component based on the required sound pressure level and resonant frequency for the target application environment. Evaluate the physical dimensions to ensure compatibility with the available board space and enclosure constraints. Consider the through-hole mounting style if surface area is limited or if higher mechanical robustness is needed compared to surface-mount alternatives. Verify that the 5 VDC operating voltage matches the available logic levels in the design.

Part Context

This part belongs to the CEP series of piezoelectric buzzers from Same Sky, which offers various diameters and voltage ratings. The series is engineered for general-purpose audio indication tasks where cost-effectiveness and reliability are prioritized. The 22 mm diameter variant provides a balance between acoustic output and physical footprint, making it suitable for mid-range applications.

Replacement Considerations

Direct substitutes may include other 22 mm piezoelectric buzzers with similar 5 VDC ratings and 2.7 kHz frequencies. Verify mechanical dimensions and pin spacing before substitution. Alternative brands should match the 85 dB SPL specification to maintain equivalent audibility levels in the final assembly.