IMO 41.SD87P120H-LF Piezo Transducer 3 Pin 12Vdc 75dB MBM1-04

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For sale here we have the above parts…

IMO 41.SD87P120H-LF (87PZ30270-LF)

Piezo Transducer 12VDC 75dB 

12V 75 dB @ 100cm 2.7kHz

5 Pieces

3 solder or PCB tags

Circuit connection diagram

Diameter (mm):  30 Circuit connection diagram

Height (mm):  12.1

Operating Voltage (V):  1.5 ~ 24

Rated Voltage: (V)12Vdc

Max Rated Current (mA):  75

Min Sound Output (dBA):  75 at 1mtr

Resonant Frequency (Hz):  2700 ± 500

Operating Tempature:  (°C)-20 ~ +105

Housing:  PBT

Colour:  Black

Weight (g):  5

Information provided by a previous buyer:
 “I think almost any NPN transistor will work but I don’t know what the M and F on the terminals mean. G is obviously ground but the one marked F you would expect to be Feedback which is how the circuit works, but it isn’t Feedback, the feedback is provided by M !!!

This circuit that I’ve drawn works with a 2N2222a transistor and makes a fair old noise, but take a look at a youtube video…

https://www.youtube.com/watch?v=aJ3wLGanuCw

– where there is an explanation and another circuit.”

These parts came to us as part of a lot of surplus stock from a large Milspec type Co. and have been kept in storage for some time, we have therefore classified them as ‘new other’. They are however in pristine condition still in their original packaging and ‘as new’ in all respects, the photographs are representative of their excellent condition, and, as with all our products they come with a full guarantee. 

PLEASE NOTE!