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SDR Series

Digi-Key introduces TDK's High Sound Pressure and SMD Type Miniature Electromagnetic Buzzers

TDK's small and thin SMD type electromagnetic buzzers provide high sound pressure, compactness and reliability. TDK has adopted a liquid crystal polymer with high heatproof properties in the housing component of the SDR Series. To support the diaphragm, metallic rings are now used instead of conventional resin materials to make the structure solid so that it is no longer affected by thermal expansion at reflow process temperature. Also, highly reliable epoxy adhesives and ultrasonic welding is applied to joints of individual parts. These improvements have allowed TDK to provide a small size of 8.5mm square with a height of 4mm and a high sound pressure. TDK SDR Series

  • Features & Benefits
  • Specifications
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  Features & Benefits
  • Slim and one of the smallest surface mount types which make it great for mobile phones, ringers, and for alarm sounds and melodies from portable mobile devices
  • Highly magnetic material and a strong magnet used to provide high sound pressure
  • Highly reliable structure compliant with reflow processes
  • RoHS compliant
Specifications
Rated voltage Eo-p(V) 3
Operating voltage Eo-p(V) 0 to 5
Frequency(Hz) 2670
Sound pressure level (dB(A)/10cm) typ. 97
Sound pressure level (dB(A)/10cm) min. 88
Rated current (mA(ave)) max. 85
DC resistance(Ω) typ. 16
Operating temperature range –40 to +85°C
Storage temperature range –40 to +85°C
SDR Series Structure Model
SDR Series Frequency Characteristics SDR Series Recommended Soldering Condition - Reflow Soldering
Digi-Key Part Number TDK Part Number Description  
445-4832-2-ND SDR08540M3-01 BUZZER MAGN 0-5V 2.67KHZ SMD Datasheet