PK-20A25PQ

Overview

The PK-20A25PQ is a piezoelectric buzzer indicator manufactured by Mallory Sonalert Products Inc. It features an internally driven circuit and operates on a DC input voltage range of 3 to 24 volts. The device produces a continuous tone at a frequency of 2.5 kHz with a sound pressure level of 95 dB measured at 12 V and 30 cm distance. It draws a supply current of 25 mA and utilizes through-hole PC pin termination for board mounting. The unit measures 23 mm by 18 mm.

Feature Summary

• Internally driven piezoelectric design eliminates the need for external oscillators
• Constant tone output capability for steady audio signaling
• Through-hole PC pin termination for standard PCB integration

Applications

• Industrial equipment status indication
• Consumer appliance audio alerts
• Transportation system warning signals

Procurement Notes

Verify the specific voltage rating and acoustic performance requirements against the datasheet specifications before procurement. Confirm that the through-hole PC pin footprint matches the target printed circuit board layout. Ensure the operating environment remains within the specified electrical limits to maintain component reliability and consistent acoustic output performance.

Selection Notes

Select this component when a compact, self-contained audio source is required for panel or board mounting applications. The internal drive circuit simplifies schematic design by removing the need for external driving transistors or oscillator components. Consider the 23 mm by 18 mm form factor for space-constrained enclosures where standard buzzer sizes may not fit.

Part Context

Mallory Sonalert Products Inc. specializes in high-performance acoustic signaling devices. The PK-20A25PQ belongs to their line of piezoelectric buzzers designed for reliable operation in various electronic systems. The manufacturer provides these components for industrial, consumer, and transportation sectors requiring standardized audio alert solutions.

FAQ

Does the PK-20A25PQ require an external driver circuit?

No, the PK-20A25PQ features an internally driven circuit, allowing it to operate directly from a DC power source without additional external drivers.

What is the mounting style for this buzzer?

The PK-20A25PQ uses through-hole PC pins for mounting onto printed circuit boards.