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Product Detailed Parameters
- Description：9MMX5.5MM 12 V, 85 DB, THROUGH
- Series：CMI
- Mfr：Same Sky (Formerly CUI Devices)
- Package：Tray
- Driver Circuitry：Indicator, Internally Driven
- Input Type：DC
- Frequency：2.7kHz
- Technology：Magnetic
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：85dB @ 12V, 10cm
- Current - Supply：100mA
- Port Location：Top
- Operating Temperature：-20°C ~ 70°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：PC Pins
- Height - Seated (Max)：0.224" (5.70mm)
- Voltage - Rated：12 V
- Voltage Range：9 ~ 28V
- Size / Dimension：0.362" Dia (9.20mm)
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Overview
The CMI-0955-12TH is a magnetic audio indicator buzzer manufactured by Same Sky. It features a through-hole mounting style with PC pins and operates at a rated voltage of 12 VDC. The device produces an acoustic output of 85 dB at 12V measured at 10cm distance, with a resonant frequency of 2.7 kHz. Electrical characteristics include a current rating of 100 mA. The physical dimensions are 9 mm in diameter and 5.5 mm in height.
Feature Summary
- Internally driven magnetic design for simplified circuit integration
- Through-hole construction with PC pin termination
- Compact cylindrical form factor suitable for panel or board mounting
Applications
- General purpose electronic equipment status indication
- Appliance control panels requiring audible alerts
- Industrial machinery warning systems
Procurement Notes
Verify the specific suffix and packaging configuration against the manufacturer's latest datasheet before ordering. Confirm that the through-hole footprint matches the target PCB layout. Ensure the operating voltage aligns with the system supply to prevent damage. Check for RoHS compliance documentation if required by project specifications.
Selection Notes
Select this component when a high-volume, cost-effective audible alert is needed for 12V systems. The internal driver eliminates the need for external oscillators. Consider the 100 mA current draw for power budget calculations. The 85 dB output provides clear audibility in moderate noise environments without excessive volume.
Part Context
This part belongs to the CMI series of magnetic buzzers from Same Sky. The series offers various voltages and sound pressure levels. The CMI-0955-12TH specifically targets applications requiring a balance between acoustic performance and low power consumption compared to higher current alternatives.
Replacement Considerations
Direct substitutes may include other 12V magnetic buzzers with similar 2.7 kHz frequency and 85 dB SPL. Verify mechanical dimensions and pin spacing to ensure compatibility with existing PCB footprints.
