21.5mm piezo buzzer sheet Double ceramic

powerful 21.5 double ceramic buzzer disc

A.Specification:

 Rated  Voltage:12Vp-p

 Max.input voltage:12max.Vp-p

 Resonant frequency:3.6±0.5KHz(The resonant frequency is suitable only for piezo element without wire)

 Resonant impedance:Max90 ohm(The resonant resistance  is suitable  onlu for piezo element without wire)

 Electrostatic capacity:150±30%nf(At 120Hz/1V)

 Operating temp:-25°C~70°C

 Storage temp: -30°C~80°C

 Dimension:21.5

 Weight:4.2g

 Substrate Mateeial:Brass

B.External dimensions:

C.MECHANICAL CHARACTERISTICS

1,Appearance quality:Smooth clean,Not obvious mechanical damage;

2,Silver level strength:Welds the 0.15*7 stranded conductor,Withstands vertical direction 2.5N,Horizontal direction 20N 

 pulling force,Silver level not obvious mechanical damage;

3,Cohesional strength:After potsherd diameter curving, does not have the porcelain piece to fall off, but permission chap.

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