SC110JR

Overview

The SC110JR is a piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates at a nominal frequency of 2700 Hz and produces a sound pressure level of 85 dB at a distance of 10 cm. The device requires a DC drive voltage ranging from 3 to 9 volts, with a typical operating current of 15 mA at 5 VDC. It features a compact cylindrical design with a diameter of 11 mm and a height of 6.4 mm. The unit is designed for through-hole mounting and includes integrated electronics for direct DC operation without external oscillators.

Feature Summary

• Integrated oscillator circuitry enables direct DC drive capability
• Compact cylindrical form factor suitable for space-constrained enclosures
• Piezoelectric transducer technology provides reliable acoustic output
• Through-hole termination style facilitates standard PCB assembly

Applications

• General purpose audible alarms in consumer electronics
• Status indication in industrial control panels
• Warning signals in automotive instrumentation
• Audible feedback in medical diagnostic equipment

Procurement Notes

Verify the specific suffix codes on the component marking against official Mallory Sonalert documentation to confirm exact electrical tolerances and terminal configurations. Ensure that the procurement source provides original manufacturer data sheets rather than third-party summaries to guarantee accuracy regarding drive voltage requirements and acoustic performance specifications.

Selection Notes

Select this component when a self-oscillating buzzer is required for simple DC interface applications. Consider the 85 dB acoustic output relative to the ambient noise environment of the target application. Verify that the physical dimensions fit within the designated enclosure space and that the through-hole footprint matches the printed circuit board layout constraints.

Part Context

This model belongs to the SC series of piezoelectric buzzers from Mallory Sonalert. The series is characterized by low power consumption and high reliability. The SC110JR specifically denotes the 11 mm diameter variant within this product line, distinguished by its specific frequency and voltage characteristics compared to other models in the same family.

Replacement Considerations

Consult official Mallory Sonalert cross-reference guides for verified substitutes. Generic replacements may differ in acoustic output or drive voltage requirements. Ensure any substitute part maintains the same form factor and electrical interface to avoid redesigning the host circuit board.