PK-27A29ERB481Q

Overview

The PK-27A29ERB481Q is an internally driven piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates on a wide DC voltage range of 3 to 48V and produces a continuous tone at 200Hz. The device delivers a sound pressure level of 80dB at 48V measured at 30cm, with a current draw between 3 and 25mA. It features right-angle screw terminals for connection and is designed for panel mount installation using a flange. The unit measures 44.5mm by 31mm.

Feature Summary

• Internally driven piezoelectric technology for simplified circuit integration
• Wide operating voltage compatibility supporting 3V to 48DC inputs
• Right-angle screw terminal connections for secure wiring
• Flange-style panel mount design for stable physical attachment

Applications

• Industrial control panels requiring audible status alerts
• Medical equipment indicating operational states
• Automotive instrumentation systems
• General-purpose electronic device signaling

Procurement Notes

Verify the specific voltage rating and acoustic output requirements against the official datasheet before procurement. Confirm that the right-angle screw terminal orientation matches the enclosure design constraints. Ensure the mounting hole dimensions align with the specified flange size to guarantee proper fitment during assembly.

Selection Notes

Select this component when a wide input voltage range is required without external driving circuits. The internal driver simplifies design complexity compared to passive buzzers. Consider the 200Hz frequency for low-frequency alert applications where distinct tonal differentiation is necessary. Evaluate the 80dB output level against ambient noise conditions in the target environment.

Part Context

This part belongs to the PK series of piezoelectric indicators from Mallory Sonalert. The series is characterized by robust construction suitable for industrial environments. The specific model integrates the driver electronics directly into the transducer housing, eliminating the need for separate oscillator components in the host system design.

Replacement Considerations

Consult the manufacturer's cross-reference guide for verified substitutes. Ensure any replacement maintains the same voltage range, terminal type, and mounting configuration to preserve mechanical and electrical compatibility.