Bestar components
3mm
Noise Cancelling
Microphone
We are pleased to announce our 3mm
diameter Electret Condenser Microphones
(ECM), the fi rst to provide full bandwidth,
high sensitivity, and high signal to noise
ratio all in this small 3mm package.
BeStar
www.bestartech.com (847)261-2850
KEY FEATURES
Small 3mm size — 50% smaller than
commonly used 4mm
Comes available with wires for ease
of application, or customizable!
Available now!
Part # HBO0302C-58/1248
MARKET Headphones Earphones Wireless earphones Smart speaker
APPLICATIONS World’s smallest Active Noise Cancelling Applications
At this size, HBO0302C is also
comparable to the smallest MEMS
microphone packages in the market.
Compared to MEMS microphones however,
HBO0302C provides unique advantages.
MEMS microphones are traditionally poor in low
frequency noise performance. That’s the reason
most of the advanced active noise cancelling (ANC)
headsets or earphones in the market use ECM’s.
ANC headset or earphones are in great demand
since they are very effective in cancelling out
lower frequency band mechanical noises, which
need the noise collecting microphones to be
excellent in performance when picking up lower
frequency band sound. Our HBO0302C is so small,
that earphones with limited space can use multiple
ANC microphones now just like high end ANC
headsets do for advanced ANC audio processing.
HBO0302C is currently used in the best performance
ANC headsets and earphones in the market!
Bestar components
BeStar
www.bestartech.com (847)261-2850
ELECTRICAL REQUIREMENTS
Directivity
Omnidirectional
Sensitivity
0dB =1V/Pa, 1kHz, rated voltage, R L = 2.2KΩ
-38± 3 dB
-38.0 ~ -35.0dB (A)
-41.0 ~ -38.0dB (B)
Phase
0dB = 1V/Pa, 2V, RL = 2.2KW
30° ~ 45° (30Hz)
135° ~ 145° (160Hz)
18° ~ 28° (1KHz
)
Rated Voltage
2V
Operating Voltage Range
1 ~ 10V
Current Consumption
<=0.5mA
Frequency Range
20 ~ 20KHz
Output Impedance
<=2.2KΩ
S/N Ratio
>=65dB
Maximum input SPL
THD <3%
110dB
Sensitivity Variation
Vs:2V to 1.5V
Max. -3dB
Terminal 1
Terminal 2
White
NAT
Wires: O0.8 shielded wire
Red
50 5
+_
+_
1.0 0.5
+_
O3.0 0.1
+ _
1.5 0.1
+_
TOP VIEW SIDE VIEW
BOTTOM VIEW
3mm Noise
Cancelling Microphone
Part # HBO0302C-58/1248