Transducer vs Buzzer

SMD Magnetic transducer differs from buzzer. The difference comes that transducer needs external drive circuit, while buzzer has internal drive circuit inside. Usually engineers drive transducer with external PWM signal. But for those who don't have, click here to download a input signal generator circuit with multi-vibrator for proper drive of transducer .
(BST-1295C is the only buzzer in above chart)

In case of the transducer, frequency in this chart means "rated frequency" at which the transducer has its maximum sound output. If frequency is lower/higher than the rated frequency, its sound will be smaller than one at 4k input.

In case of the buzzer with internal circuit, frequency in this chart means "fixed output frequency" when DC input signal is applied.

If additional technical supports are needed, please contact us.

How to get free samples?

10 pcs of samples are free, but the freight cost is responsible for consignee.
To get these free samples, please contact our sample provider.(email : sp@bosanhitech.com)
Attaching below items in your message will help us to expedite samples. 

1. Company name
2. Contact person's name
3. phone/fax/email/ship to address
4. Part number of samples to be required
5. Quantity(max 10 pcs)
6. Application/role of buzzer in device.
7. Dispatch mode(FedEx,DHL,UPS) and account number
   (in case of DHL, account number for receiving is needed)
8. Expected time for arrival(ETA) for samples.