PK-20A35EW-24VQ

Overview

The PK-20A35EW-24VQ is a piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates at a nominal voltage of 24 VDC and produces an acoustic output of 85 dB at a distance of 10 cm. The device features a resonant frequency of 3500 Hz and utilizes a plastic case with epoxy sealing for environmental protection. Key electrical parameters include a maximum current draw of 30 mA and an operating temperature range from -20°C to +70°C. The unit employs a square wave drive signal for optimal sound production.

Feature Summary

• Epoxy-sealed construction provides resistance to moisture and dust ingress
• Piezoelectric transducer design ensures reliable acoustic performance
• Plastic housing offers durability and lightweight characteristics

Applications

• Industrial control panel alarms
• Appliance status indicators
• Security system sirens

Procurement Notes

Verify the specific suffix codes against the manufacturer's latest datasheet to ensure compatibility with required voltage and mounting configurations. Confirm that the epoxy seal meets the environmental standards of the intended deployment site. Cross-reference the pinout diagram with the target circuit design to prevent connection errors during assembly.

Selection Notes

Select this component when a sealed, high-decibel audible indicator is required for 24 VDC systems. Consider the 3500 Hz frequency for applications needing distinct alert tones. Ensure the enclosure allows for adequate sound projection without obstruction. Evaluate thermal constraints within the host device to maintain operation within the specified temperature limits.

Part Context

This model belongs to the PK series of piezoelectric buzzers, designed for general-purpose audible signaling. The series is characterized by robust construction and consistent acoustic output across various industrial environments. It serves as a standard solution for manufacturers requiring reliable alarm components in compact form factors.

Replacement Considerations

Consult official substitution lists for equivalent acoustic output and voltage ratings. Verify mechanical dimensions and terminal configurations before swapping units. Ensure any replacement maintains the same sealing等级 if environmental exposure is a factor.