BL-21785-000 Knowles Acoustics, BL-21785-000 Datasheet - Page 28
![MIC ELEMENT PIEZO INSTRUMENT](/photos/0/4/490/bl-21785_sml.jpg)
BL-21785-000
Manufacturer Part Number
BL-21785-000
Description
MIC ELEMENT PIEZO INSTRUMENT
Manufacturer
Knowles Acoustics
Series
BLr
Type
Piezo Condenserr
Specifications of BL-21785-000
Sensitivity
-69dB ±3dB
Voltage - Rated
1.3V
Current
160µA
Size / Dimension
Rectangular - 7.87mm L x 5.54mm W x 2.24mm H
Impedance
4K Ohm
Frequency
20Hz ~ 10kHz
Termination
Solder Pads
Direction
Omnidirectional
Port Location
Side
Directional Properties
Omnidirectional
Operating Voltage
3 V
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
Transducer Function
Microphone
Device Type
Microphone
Directivity
Omni
External Diameter
1.41mm
Output Impedance
4000ohm
Drain Current Max
160µA
Outer Diameter
1.41mm
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Filter Type
-
S/n Ratio
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
423-1003
BL-1785
BL-21785
BL1785
BL-1785
BL-21785
BL1785
AMERICAS:
Knowles Acoustics
1151 Maplewood Drive
Itasca, IL 60143 U.S.A.
Phone: 630-250-5930
Fax: 630-250-5932
© 2007 Knowles Acoustics Printed In USA
Knowles North &
South America
World Headquarters
Manufacturing
Sales & Application Engineering
For immediate assistance on your specific requirements, please call the nearest facility listed below.
EUROPE:
Knowles Acoustics
York Road, Burgess Hill
West Sussex, RH15 9TT
England
Phone: +44-1444-235432
Fax: +44-1444-248724
Knowles Acoustics maintains sales, marketing, engineering and manufacturing globally.
AMERICAS
Knowles Europe,
Africa & Middle
Globally Positioned
www.knowles.com
East
JAPAN:
Knowles Acoustics
2-2-16 Sangenjaya
Setagaya-Ku, Tokyo
154-0024 Japan
Phone: 81-3-5779-8503
Fax: 81-3-5779-8523
EMEA / ASIA PACIFIC
KOREA:
Knowles Acoustics
#1212 Dongbu Root Building, 16-2
Sunae-Dong
Bundang-Ku, Sungnam-Shi
Kyunggi-Do, Korea
Phone: 82-31-712-2223
Fax: 82-31-712-3314
Knowles Malaysia
Knowles Australia
Knowles China
Knowles Singapore
Knowles Taiwan
ASIA:
Knowles Acoustics
5F, No. 129, Lane 235, Bauchiau Rd.
Shindian City, Taipei 23145, Taiwan
Phone: 886-2-8919-1799
Fax: 886-2-8919-1798
Knowles Japan
Knowles Korea
KA-003-12-07V3