PT-1203-3

Overview

The PT-1203-3 is an externally driven piezo audio transducer manufactured by Soberton Inc. It operates at a nominal voltage of 3 V and draws a current of 5 mA. The device produces a sound pressure level of 75 dB at 3 V with a resonant frequency of 4000 Hz. It features a 12 mm square surface mount package with solder pads for termination. The unit does not include a built-in drive circuit and is not washable.

Feature Summary

• Externally driven piezoelectric design requiring external signal generation
• Surface mount termination configuration for automated assembly
• Compact 12 mm form factor suitable for space-constrained enclosures

Applications

• General purpose audible alarms in consumer electronics
• Status indication in portable battery-operated devices
• Simple tone generation in telephony equipment

Procurement Notes

Verify the specific suffix codes against official Soberton documentation to confirm exact electrical tolerances and termination plating. Ensure the procurement specification matches the externally driven requirement, as this component lacks internal oscillation circuitry. Confirm RoHS compliance status through the manufacturer's latest declaration rather than distributor summaries.

Selection Notes

Select this component when a low-profile, surface-mount piezo element is required for simple alert applications. The absence of a built-in driver necessitates a microcontroller or oscillator circuit on the PCB. Evaluate the 75 dB output against ambient noise requirements and ensure the 3 V operating voltage aligns with the system power rail.

Part Context

This part belongs to the PT series of piezo audio transducers from Soberton Inc. The series offers various sizes and mounting options for audio signaling. The PT-1203-3 specifically addresses the need for small-footprint, high-reliability acoustic components in modern electronic assemblies where traditional through-hole buzzers are impractical.

Replacement Considerations

Direct substitutes must match the 12x12mm footprint, 3V rating, and SMD termination style. Verify mechanical compatibility and acoustic performance equivalence before substitution.