BMT2512H12-04

Overview

The BMT2512H12-04 is an externally driven magnetic buzzer manufactured by BeStar Technologies, Inc. It operates at a rated voltage of 12 V and draws a current of 55 mA. The device produces a sound pressure level of 85 dB when measured at a distance of 10 cm with the 12 V supply applied. Its operating frequency is specified as 1 kHz. The component utilizes through-hole mounting with PC pins for circuit board integration. The physical dimensions include a diameter of 25 mm and a maximum seated height of 16.70 mm (0.657 inches). It is designed to function within an ambient temperature range of -40°C to 85°C.

Feature Summary

• Externally driven magnetic transducer design
• Through-hole PC pin mounting configuration
• Operates within a wide industrial temperature range

Applications

• Electronic alarm systems
• Audible status indicators in control panels
• Industrial equipment signaling

Procurement Notes

Verify the specific datasheet version from BeStar Technologies or authorized distributors to confirm exact acoustic performance curves and mechanical tolerances. Ensure the driving circuit can supply the required 55 mA continuous current at 12 V. Confirm that the PCB layout accommodates the 25 mm diameter and 16.70 mm height constraints. Check for any specific polarity requirements if applicable to the external drive signal.

Selection Notes

Select this component when a high-volume, low-cost audible indicator is required for 12 V DC systems. The through-hole package is suitable for prototyping or applications requiring robust mechanical attachment. Consider the 85 dB output level against the environmental noise floor of the target application. Verify that the 1 kHz tone frequency meets regulatory or user preference standards for the intended device.

Part Context

This part belongs to the BeStar Technologies magnetic buzzer series, characterized by simple external drive requirements compared to piezoelectric self-excited types. The BMT2512H12-04 specifically denotes the 12 V rating and 25 mm form factor within the product line. Magnetic buzzers typically offer higher efficiency and louder output levels than comparable piezoelectric alternatives in similar size packages.

Replacement Considerations

Cross-reference with other 12 V, 25 mm through-hole magnetic buzzers from manufacturers like NMB or Murata. Ensure substitute parts match the 55 mA current draw and 85 dB acoustic output at 10 cm. Verify that the replacement maintains the same pin spacing and seated height to fit existing enclosures and PCB footprints without modification.