BK-28507-000 Knowles Acoustics, BK-28507-000 Datasheet - Page 9

• Manufacturer Part Number: BK-28507-000
• Description: SPEAKER BALANCED BROADBAND
• Manufacturer: Knowles Acoustics
• Series: BKr
• Type: Magnetic, Balanced Armature, End Portr

Specifications of BK-28507-000

• Impedance: 13.3 Ohm
• Size / Dimension: 7.87mm L x 5.59mm W x 4.01mm H
• Termination: Solder Pads
• Shape: Rectangular
• Sound Pressure Level: 136 dB
• Termination Style: Wire
• Dimensions: 7.87 mm L x 5.59 mm W x 4.01 mm D
• Depth: 4.01 mm
• Length: 7.87 mm
• Width: 5.59 mm
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Rated: -
• Power - Max: -
• Frequency Range: -
• Sound Pressure Level: -
• Material - Cone: -
• Material - Magnet: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 423-1055; BK-28507; BK-8507

Specialty Transducer Microphones
The Specialty Transducer (ST) product line consists of miniature microphones, speakers, and
assemblies. Hundreds of design possibilities can be applied to your product challenge with our
high-performance microphone designs. Ideal for new product ideas that require premium audio
and very small form factors, solutions include noise canceling, omni-directional and unidirectional
performance. Other variables include size, shape, amplification, sensitivity, low noise, and resistance
to vibration and mechanical shock.
ST components and assemblies are unique in fit, form and function. Our products are designed
into high value applications in markets such as the following:
•
•
•
FG SERIES
Omnidirectional 2.565 DIA x 2.565 (mm)
The FG Series microphone is the world’s smallest electret condenser microphone.
Its cylindrical shape and compact size facilitate compact designs. The FG can
also be used in directional applications as a matched omni-directional pair.
EM SERIES
Omnidirectional 3.63 x 3.63 x 2.28 (mm)
The EM is a popular, alternative omni-directional microphone. The EM can also
be used in directional applications as a matched omni-directional pair.
Note: All performance curves are typical
Communications – headsets, handsets, earpieces, telephony, voice recognition, emergency services, military, surveillance
Pro audio – in-ear speakers, lapel microphones, boom microphones
Medical and more – sensors, audiometers, medical implants
M M o o d d e e l l
FG-23329-C05
FG-23329-P07
FG-23629-P16
FG-23629-C36
FG-23652-C36
FG-23652-P16
FG-23742-D36
FG-23742-P16
FG-26163-000
M M o o d d e e l l
EM-23046-P16
EM-23069-000
– Microphone
– Microphone
Sensitivity @1kHz
Sensitivity @1kHz
(dB re1V/1Pa)
(dB re1V/1Pa)
-33.0±3
-33.0±3
-33.0±3
-33.0±3
-33.0±3
-33.0±3
-43.0±3
-43.0±3
-33.0±3
-36.0±3
-36.0±3
•
•
•
•
•
•
•
•
•
•
Smallest microphone option
High resistance to mechanical shock
Exceptionally low vibration sensitivity
Various responses available
Integral RFI suppression
High resistance to mechanical shock
Improved RFI and EMI
Undamped, screen damped, and internally damped responses
Numerous port locations
Wide range of frequency responses
DC Supply (Vdc)
DC Supply (Vdc)
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
0.9-1.6
1.3
1.3
Current Drain (uA)
Current Drain (uA)
SPECIALTY TRANSDUCERS – Microphones
Max. Amplifier
Max. Amplifier
www.knowles.com
50
50
50
50
50
50
50
50
50
50
50
Max. “A” Weighted
Max. “A” Weighted
Equivalent SPL)
Equivalent SPL)
Noise (1 kHz
Noise (1 kHz
30.0 dB
30.0 dB
28.0 dB
28.0 dB
28.0 dB
28.0 dB
30.0 dB
36.0 dB
93.0 dB
31.0 dB
33.0 dB
-40
-50
-60
-70
-80
-40
-50
-60
-70
-80
100
Impedance (Ohms)
Impedance (Ohms)
100
Nominal Output
Nominal Output
4400
4400
4400
4400
4400
4400
4400
4400
4400
4400
4400
2
2
3
3
4
4
5
5
6 7 8 9
6 7 8 9
3-wire, 1015 mm Shielded Cable
FREQUENCY (Hz)
3-wire, 25.4 mm Shielded Cable
FREQUENCY (Hz)
3-wire, 25.4 mm Litz Wires
3-wire, 25.4 mm Litz Wires
3-wire, 25.4 mm Litz Wires
3-wire, 25.4 mm Litz Wires
1k
1k
RFI Improved Version
RFI Improved Version
RFI Improved Version
RFI Improved Version
Comments
Comments
Tubeless
2
2
3
3
4
4
5
5
6 7 8 9
6 7 8 9
10k
10k
9