Piezo Diaphragm 15KHz
Specification: Resonant frequency (KHz) 15.0±3.0
Resonant impedance (Ω) ≤500
Capacitance at 1KHz (pF) 6000±30%
Metal plate diameter (mm) (D) (mm) φ10.0±0.2
Ceramic plate diameter (mm) (d) (mm) φ8.25±0.3 s
Total thickness (mm) (T) (mm) 0.23±0.03
Metal plate thickness (mm) (t) (mm) 0.1±0.02
Metal material Ni RoHS Yes Test basic state: Temp(20±2℃) ,
Humidity(40~70%RH) , Air pressure(860~1060hPa).
Environment Test: Dimensions： ITEM TESTING CONDITION RECOVERY CONDITION Humidity 40±2℃, 93(+2/-3)%RH, 96HRS 2 hour recovery under normal temp.
Temp. cycling -10±2℃, 30minutes room temp. 15 minutes +70±2℃, 30 minutes room temp. 15 minutes 5 cycles 2 hour recovery under normal temp.
High temp. +70±2℃,Not less than 30min Measurement under high temp.
Low temp. -10±2℃,
Not less than 30min
Measurement under low temp.
Evaluation standard :
Change requirement on electrical performance:
Resonant frequency ±20%,
Free capacitance±30%