Compact micro buzzers are suited for portable equipment

13th July 2016

CUI Devices

Nat Bowers

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CUI Devices has announced several additions to its range of micro buzzers. The three models, CMT‑4023S‑SMT, CMT‑5023S‑SMT and CPT‑9019S‑SMT, are housed in compact, surface mount packages as small as 4x4mm. Featuring profile depths as low as 1.9mm and Sound Pressure Levels (SPL) ranging from 65 to 80dB at 10cm, these micro buzzers are suited for a range of portable equipment applications.

The CMT‑4023S‑SMT and CMT‑5023S‑SMT are magnetic transducer buzzers housed in compact footprints of 4x4mm and 5x5mm, respectively. Both buzzers feature a low profile of 2mm, a rated voltage of 3V and a rated frequency of 4kHz. The CMT‑4023S‑SMT with its 4x4mm package is among the smallest in the industry while carrying an SPL of 70dB and operating over a temperature range from -20 to +70°C. The 5mm CMT‑5023S‑SMT features an SPL of 80dB over an operating temperature range from ‑30 to +70°C.

For applications where electrical noise is more of a concern, the 9x9mm CPT‑9019S‑SMT features piezoelectric technology and a profile depth of 1.9mm – making it one of the lowest profile piezo buzzers on the market. The series delivers a maximum peak-to-peak voltage of 25V, a rated frequency of 4kHz and an SPL of 65dB. The operating temperature range for the CPT‑9019S‑SMT is from -30 to +70°C. All three models are externally driven and suitable for use in designs requiring reflow solder assembly for high-volume production.

The CMT‑4023S‑SMT, CMT‑5023S‑SMT and CPT‑9019S‑SMT are available immediately through distribution with prices starting at $1.08 each in 1,000 unit quantities. Please contact CUI Devices for OEM pricing.