SC628D-1R

Overview

The SC628D-1R is a piezoelectric buzzer from the Mallory Sonalert SC series, designed for industrial alarm and indicator applications. It operates on a DC voltage range of 6 to 28 volts with a continuous tone frequency of 2 kHz. The device features an internal driver circuit, eliminating the need for external oscillators. Electrical specifications include a current rating of 5 to 18 mA and a sound pressure level of 60 dBA measured at 6V. The unit utilizes screw terminals for connection and supports panel mounting within a 43 mm diameter form factor.

Feature Summary

• Integrated internal driver circuitry for direct connection without external oscillator components
• Piezoelectric acoustic generation providing consistent continuous tone output
• Industrial-grade construction suitable for demanding environmental conditions

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Electrical cabinet safety alerts
• Automated equipment monitoring

Procurement Notes

Verify that the specific part number SC628D-1R matches the required 6-28VDC operating range and 2kHz frequency. Confirm that the 60 dBA sound pressure level meets the ambient noise requirements of the installation site. Ensure the screw terminal interface is compatible with the existing wiring harness. Check for any specific UL or CUL approval requirements if the application involves regulated electrical enclosures.

Selection Notes

Select this component when an internally driven solution is preferred to simplify circuit design. The SC628D-1R is appropriate for applications requiring a moderate sound level in controlled environments. Consider the 43 mm mounting diameter for panel cutout compatibility. Compare against higher decibel variants if louder alarms are necessary for noisy industrial settings.

Part Context

This component belongs to the Mallory Sonalert SC series of piezoelectric buzzers. The series offers various configurations including different sound levels, pulse modes, and voltage ratings. The SC628D-1R specifically represents a constant tone variant with integrated driving electronics, distinguishing it from passive piezo elements that require external drive signals.

Replacement Considerations

SC628LR

FAQ

Does the SC628D-1R require an external oscillator?

No, the SC628D-1R contains an internal driver circuit and can be connected directly to the power supply.

What is the mounting style for this buzzer?

The SC628D-1R is designed for panel mount installation using screw terminals.