I am using Magnetic buzzer into the design. Buzzer part number is SMT8585-03H03LF from Bestar electronics.

Below are the specifications for quick glance.

Question1:

Is it possible to get a LTspice model for this kind of buzzer. I see an Magnetic buzzer's equivalent circuit will be Inductor in series with resister. I can get resister value from specifications but no data on coil data.

Question2:

As per testing results I have drawn an equivalent circuit as below. R2 is just extra, i am not using it in actual circuit.

Here, I have 2 constraints Based max driving current which I am limiting to ~80mA,

- With Max Ic = 80mA--> total Collector resistance ~ 40Ohms, leaving coil resistance adding 25 Ohms Collector resister - Because of the drop across this resister (25*0.080 =2V) voltage across buzzer is less ~1.2V, which is less than Min recommended voltage.
- If i reduce the collector resistance to lets say 5 Ohms, Max collector current is =3.2/(5+16) = 155mA which is exceeding the Maximum current specification of the Buzzer, But voltage across Buzzer is ~2.7V which is in proper range.

In one of application notes i saw actual driving current into the buzzer can be 2-3 times the Max current specification listed. So,I am preferring to go with Option2 where i am exceeding Max current 155mA with 50% duty-cycle (spec is 100mA).

Is this OK to use.