PFD-35N29WQ

Overview

The PFD-35N29WQ is an industrial-grade piezoelectric buzzer from Mallory Sonalert. It operates on a rated voltage of 12 VDC with a wide input range of 3 to 28 VDC. The device produces a constant or fast pulse tone at a frequency of 2.9 kHz (2900 Hz). It achieves a sound pressure level of 90 dBA minimum at 30 cm. Current consumption is typically low, with similar models drawing approximately 5 mA. The unit features solder pin termination and supports panel or flange mounting. Its dimensions are 42 mm in diameter by 16 mm in height.

Feature Summary

• Industrial-grade construction for harsh environments
• Piezoelectric transducer technology
• Dual-tone or fast pulse output capability
• Wide operating voltage range

Applications

• Industrial machinery status indicators
• HVAC system alarms
• Commercial appliance alerts
• Security system sirens

Procurement Notes

Verify the specific drive mode (constant vs. fast pulse) required for your application, as this variant supports both. Confirm that the 12 VDC rated voltage aligns with your system's power supply. Ensure the mounting hole pattern matches the 42 mm diameter specification. Check RoHS compliance documentation if environmental regulations apply to your manufacturing process.

Selection Notes

Select this model when high acoustic output is needed in noisy industrial settings. The 90 dBA rating ensures audibility over background noise. The wide voltage tolerance allows operation in systems with fluctuating power supplies. Consider the physical size constraints, as the 42 mm diameter requires adequate panel space. Verify that the pin termination style fits your PCB or wiring harness design.

Part Context

This component belongs to the PFD series of industrial buzzers. It is designed for reliability in demanding conditions. The series offers various voltage and frequency options. Mallory Sonalert manufactures these devices under the Sonalert brand. The product line focuses on audible warning solutions for commercial and industrial equipment.

Replacement Considerations

The PF-35N29WQ is a closely related variant within the same family. Both share similar dimensions and electrical characteristics. Verify if the specific pulse configuration differs between the two part numbers before substitution.