Magnetic Transducer

Picture	Manufacturer No.	Size	Rated Voltag (V)	Operating Voltage (V)	Current Consumption (mA)	SPL (dB)	Resonant Frequency (Hz)	Description	Datasheet	Order
	FBMT1254	12*5.4	1.5	1～2	≤30	≥80@10cm	2048±500	D12mm H5.4mm electronicmagnetic buzzer		Send Order
	FBMT1275C	12*7.5	1.5	1～2	≤30	≥80@10cm	2048±500	12*7.5mm side hole magnetic tone buzzer with pin		Send Order
	FBMT1285	12*8.5	1.5	1～2	≤30	≥80@10cm	3100±500	12*8.5mm passive electromagnetic toy buzzer		Send Order
	FBMT1290	12*9	5	4～8	≤40	≥85@10cm	2400±500	12*9.0mm magnetic passive piezo transducer		Send Order
	FBMT6636	6.6*3.6	3	2～4	≤80	≥80@10cm	2700±500	dia 6.6mm miniature pin buzzer		Send Order
	FBMT9040	9*4	3	2～4	≤80	≥85@10cm	2731±500	9*4mm 16ohm PCB mount buzzer		Send Order
	FBMT9040SH	9*4	3	2～4	≤80	≥85@10cm	2731±500	9mm 3.6v electro-magnetic buzzer with pin		Send Order
	FBMT9042	9*4.2	3	2～4	≤80	≥85@10cm	2731±500	9x4.2mm 3v electro-magnetic buzzer		Send Order
	FBMT9055	9*5.5	1.5	1～2	≤80	≥80@10cm	3100±500	9x5.5mm passive magnetic transducer with PCB mount		Send Order
	FBMT9605	9.6*5	1.5	1～2	≤80	≥85@10cm	2731±500	9.6mm 3V PCB mount buzzer		Send Order
	FBMT2512	25*12	12	8～14	≤55	≥85@10cm	800±500	25*12 12V 120OHM ELECTROMAGNETIC passive buzzer 25*12mm used for automobile meters		Send Order

• What is magnetic transducer?

  
  

  Magnetic sound transducers uses the electromagnetic induction phenomenon to make sound for the electromagnet formed after the voice coil is connected with the alternating current to attract or repel the permanent magnet to push the diaphragm. The direct current can only continuously push the diaphragm without producing sound, and can only produce sound when connected or disconnected.

  
  

  The working principle of passive buzzer is the same as that of loudspeaker.

  
  

  When using square wave signal source to drive, a diode shall be connected in reverse parallel to prevent the high-voltage reverse electromotive force generated in case of sudden power failure from penetrating other components and shortening service life.

  
  

  Active buzzers are often more expensive than passive ones, because there are multiple oscillation circuits in them. They only need to be connected to the DC of rated voltage to send out the sound of specified frequency. The frequency is determined by the internal oscillation circuit and cannot be changed.

  
  

  Fbelec's PCB magnetic transducers adopts reliable components and has more stable performance. At the same time, the factory has introduced advanced automatic production line to reduce the cost! FBelec brand products sell well in Poland, Czech Republic and other European countries

  In the part number of FBMT1290, "FB" means" FBelec","MT" means magnetic transducer,"12" means diameter is 12mm,"90“means the height is 9.0mm.