AST501Q

Overview

The AST501Q is a piezoelectric audio indicator from the Mallory Sonalert AST series, designed for surface-mount technology (SMD/SMT) applications. It operates at a rated voltage of 3 VDC with a maximum current consumption of 5 mA. The device features a continuous tone output at a resonant frequency of 2.8 kHz and delivers a minimum sound pressure level of 85 dB. Its compact footprint measures 12.6 mm by 12.6 mm with a height of 3 mm, utilizing gullwing lead termination for PCB integration.

Feature Summary

• Piezoelectric transducer technology providing high efficiency and low power consumption
• Surface-mount gullwing lead termination for automated assembly compatibility
• Continuous tone acoustic output optimized for audible status indication

Applications

• Portable electronic devices requiring low-profile audio alerts
• Medical equipment indicating operational status or alarms
• Industrial control panels for visual-auditory feedback systems

Procurement Notes

Verify the specific suffix 'Q' against the manufacturer's official datasheet to confirm RoHS compliance and material composition details. Ensure the ordering part number matches the exact electrical specifications required for the target circuit design. Cross-reference the package outline drawing to validate footprint compatibility with existing PCB layouts before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage, low-current SMT buzzer is required for space-constrained designs. The 3 VDC rating suits battery-operated systems, while the 85 dB SPL ensures audibility in moderate noise environments. Compare dimensions against available board real estate and verify that the gullwing lead form factor aligns with the chosen reflow soldering profile and assembly capabilities.

Part Context

This part belongs to the AST series of surface-mount piezoelectric buzzers manufactured by Mallory Sonalert Products Inc. The series is characterized by its thin profile and reliability in consumer and industrial electronics. The AST501Q specifically denotes the 3 VDC variant within this family, distinguished by its specific acoustic output and mechanical mounting style compared to other voltage or drive-type variants.

Replacement Considerations

Consult the official Mallory Sonalert replacement guide for direct equivalents. Verify that any substitute maintains identical pinout configuration, acoustic performance, and thermal characteristics to ensure seamless integration without redesigning the host circuit board.