Piezoelectric Diaphragm 7BB, 7NB, and 7SB

Part Number Information
Part #: Price/Availability:
7BB Piezo Buy Now
7NB Piezo Buy Now
7SB Piezo Buy Now

Murata’s piezoelectric sound components are offered in a variety of materials and styles. Most are supplied with brass diaphragms, nickel, and stainless steel. Brass types can be provided with lead wires attached in the 12, 27, 35 and 41mm diameter sizes for either the 2-electrode (external drive) or 3-electrode (self-drive) styles. Sizes and resonant frequencies range from 12mm (9.0 kHz) to 41mm (2.2 kHz). These products require a resonant enclosure (by others) for proper operation.  All are RoHS compliant.


  • Clear sound
  • Ultra thin and lightweight
  • No contacts: therefore, no noise and highly reliable
  • Low power consumption for voltage type
  • RoHS compliant


  • Clocks
  • Test & Measurement
  • Factory Automation Equipment