BL-21994-000 Knowles Acoustics, BL-21994-000 Datasheet - Page 3

• Manufacturer Part Number: BL-21994-000
• Description: MIC ASSY PIEZO INSTR W/38" CABLE
• Manufacturer: Knowles Acoustics
• Series: BLr
• Type: Piezo Condenserr

Specifications of BL-21994-000

• Sensitivity: -69dB ±3dB
• Voltage - Rated: 3V
• Current: 160µA
• Size / Dimension: Circular - 12.7mm Dia x 25.4mm H
• Impedance: 4K Ohm
• Frequency: 20Hz ~ 10kHz
• Termination: Wire Leads
• Direction: Omnidirectional
• Port Location: Top
• Diameter: 12.7 mm
• Transducer Function: Microphone
• Device Type: Microphone
• Directivity: Omni
• External Diameter: 12.7mm
• Output Impedance: 4000ohm
• Length: 25.4mm
• Outer Diameter: 12.7mm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Filter Type: -
• S/n Ratio: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 423-1002; BL-1994; BL-21994; BL1994

C ylindrical O utline D rawings
AMERICAS:
Knowles Acoustics
1151 Maplewood Drive
Itasca, IL 60143 U.S.A.
Phone: [phone]
Fax: [phone]
BL Series Microphone Specifications
12.7 (0.5)
Diameter
12.7 (0.5)
Diameter
EUROPE:
Knowles Acoustics
York Road, Burgess Hill
West Sussex, RT15 9TT
England
Phone: [phone]
Fax: [phone]
C ylindrical P ackage with F lying L eads
6.35 (0.25)
6.35 (0.25)
JAPAN:
Knowles Acoustics
Kyodo Bloom Building
19-1 Miyasaka 2-Chome
Setagaya-Ku, Tokyo 156, Japan
Phone: [phone]
Fax: [phone]
Minimum
Minimum
25.4 (1.0)
C ylindrical P ackage with Cable
25.4 (1.0)
N ominal weight 13 grams
N ominal weight 27 grams
www . knowlesacoustics . com
M odel BL-3497
M odel BL-1994
34.29 (1.35)
ASIA:
Knowles Acoustics
5F, No. 129, Lane 235, Bauchiau Rd
Shindian City, Taipei 231, Taiwan
Republic of China
Phone: [phone]
Fax: [phone]
Maximum Cable
3.2 (0.126)
3.2 (0.126)
3.53(0.139)
Diameter
965 (38.0)
White
Red
Shield
Black
Green
Red
White
Black
The information contained in this literature is based on our experience to date and is believed to
be reliable and subject to change without notice. It is intended as a guide for use by persons having
technical skill at their own discretion and risk. We do not guarantee favorable results or assume
any liability in connection with its use. Dimensions contained herein are for reference purposes only.
For specific dimensional requirements consult factory. This publication is not to be taken as a
license to operate under, or recommendation to infringe any existing patents. This supersedes and
voids all previous literature.
Inside Diameter
Inside Diameter
9.70 (0.382)
9.70 (0.382)
Minimum
Minimum
page 3