BU-23842-000 Knowles Acoustics, BU-23842-000 Datasheet - Page 11

• Manufacturer Part Number: BU-23842-000
• Description: ACCELEROMETER 1.5VDC SOLDER
• Manufacturer: Knowles Acoustics
• Series: BUr

Specifications of BU-23842-000

• Sensitivity: -40dB ±4dB
• Mounting Type: Surface Mount
• Package / Case: Module
• Dimensions: 7.87 mm L x 5.54 mm W x 2.24 mm D
• Depth: 2.24 mm
• Length: 7.87 mm
• Width: 5.54 mm
• Input Current: 50µA
• Supply Voltage: 1.5V
• Sensor Mounting: SMD
• Frequency Response Min: 300Hz
• Frequency Response Max: 3kHz
• Transducer Function: Vibration
• Rohs Compliant: Yes
• Axis: -
• Acceleration Range: -
• Voltage - Supply: -
• Output Type: -
• Bandwidth: -
• Interface: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BU-23842; BU-23842; Q2807356

BJ SERIES
Omnidirectional, Noise Canceling 7.92 x 5.70 x 4.14 (mm)
Knowles’ Magnetic Microphones (BJ Series) are based on balanced armature technology and
are self-shielded against external magnetic fields. The microphones offer high efficiency,
stability, and reliability and are small in size. The diaphragm of the BJ Series responds to
pressure differential, giving high rejection of background noise. Both face and edge ports are
offered. In addition, there is a short distance between front and back ports resulting in
improved noise rejection up to higher frequencies.
BL SERIES
Knowles’ Piezo Ceramic Microphones (BL Series) are rugged, stable and versatile.
BL microphones are available in three different package sizes: standard, thin or 0.5"
cylindrical shell and cable assembly. Both communication and broadband frequency
response versions are offered. In addition, BL microphones have high vibration sensitivity
and may be used as accelerometers.
Note: All performance curves are typical
BL-21671-000
BL-21671-140
BL-21785-000
BL-21994-000
BL-23497-000
BL-27046-000
M M o o d d e e l l
M M o o d d e e l l
BJ-21590-000
BJ-28411-000
– Omnidirectional Microphone
– Microphone
7.87 x 5.54 x 2.23
25.4 x 12.7 DIA
25.4 x 12.7 DIA
7.9 x 5.6 x 4.1
7.9 x 5.6 x 4.1
7.9 x 5.6 x 2.3
Dimensions
Noise Canceling
Omnidirectional
Directivity
•
•
•
•
•
•
•
•
•
•
•
•
Balanced armature technology
High efficiency, stability and reliability
Self-shielded against external magnetic fields
Face and edge ports
Diaphragm responds to pressure differential giving high
rejection of background noise
Short distance between front and back ports resulting in
improved noise rejection up to higher frequencies
High sensitivity
Wide frequency range
Integral FET amplifier
High resistance to mechanical shock
Various responses
Two case sizes available
Sensitivity @ 1kHz DC Supply (Vdc)
(dB re1V/1Pa)
Port Location
-34.5±3
-34.5±4
-49.0±3
-49.0±3
-49.0±3
-49.0±3
Dual
OJn
Nominal Impedance
SPECIALTY TRANSDUCERS – Microphones
1.3
1.3
1.3
at 1kHz (Ohms)
3
3
3
www.knowles.com
3900
300
Current Drain (uA)
Max. Amplifier
160
160
160
160
50
50
Nominal DC Resistance
at 20° C (Ohms)
75.5
900
Max. “A” Weighted
Equivalent SPL)
Noise (1 kHz
32.0 dB
32.0 dB
34.0 dB
34.0 dB
34.0 dB
34.0 dB
Impedance (Ohms)
Nominal Output
13000
13000
4000
4000
4000
4000
965 mm Shielded Cable
Overpressure Recovery
34.3 mm Leads
Comments
Faster
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