electro-magnetic buzzer

  3Vo-p 50% duty Square wave,10cm
 
5.     Electromagnetic Transducer Reliability Test
 
After any following tests the part shall meet specifications without any degradation in
appearance and performance except SPL. SPL shall not deviate more than -10 dB
from the initial value
            Ordinary Temperature Life Test
The part shall be subjected to 96 hours at 25±10℃. Input rated voltage
Resonant frequency, 1/2 duty Square wave.
            High Temperature Test
The part shall be capable of with standing a storage temperature of +80℃ for 96 hours.
            Low Temperature Test
The part shall be capable of with standing a storage temperature of ­-40℃ for 96 hours.
            Humidity Test

Temperature:+40℃±3℃   Relative Humidity:90%～95% Duration: 48 hours
and expose to room temperature for 6 hours
            Temperature Shock Test
Temperature:70℃ /1hour→ 25℃/3hours→-30℃/1hour→ 25℃/3hours (1cycle)
Total cycle: 10 cycles
            Drop Test
Standard Packaging From 75mm(Drop on hard wood or board of 5cm thick,
three sides, six plain.)
            Vibration Test
Vibration:1000cycles /min. Amplitude:1.5mm, Duration: 1 hour in each 3 axes
Electromagnetic Transducer Note:

Electromagnetic Transducer Application:
CHANGZHOU FHD ELECTRONICS CO., LTD is a professional manufacturer in the field of ceramic components ,our products is widely used in household electrical appliances; mobile phones; computers; medical equipment; alarm system; pos machine ；access control system; toy; automobile; instrument and meter; electrical equipment; we can produce all kinds of piezo buzzers as long as you have the following details; welcome to consultation discussion.