... high coupling 4,excellent mechanical properties 5,powerful Ultrasonic piezoelectric ceramic transducer for cleaning,high-performance,good heat tolerance. ... comprises a radiation head, electrode, cap, prestressed bolt, piezoelectric chip etc. ELECTRONIC SPECIFICATION Item Unit Standard Frequency KHz ... % Resontant Resistance Ω ≤25 Radiating Surface MM 59 Ceramic Diameter MM 35 Height MM 97 Weight g 464 ...