MR-23151-000 Knowles Acoustics, MR-23151-000 Datasheet - Page 23
![MIC MAGNETIC 50' SUBMERSIBLE](/photos/0/4/461/mr-23151_sml.jpg)
MR-23151-000
Manufacturer Part Number
MR-23151-000
Description
MIC MAGNETIC 50' SUBMERSIBLE
Manufacturer
Knowles Acoustics
Series
MRr
Type
Magnetic, Waterproofr
Specifications of MR-23151-000
Sensitivity
-87.5dB ±3dB
Size / Dimension
Circular - 22.12mm Dia x 9.3mm H
Impedance
300 Ohm
Frequency
280Hz ~ 5kHz
Termination
Wire Leads
Direction
Omnidirectional
Port Location
Side
Directional Properties
Omnidirectional
Operating Voltage
1.3 V
Termination Style
Wire Leads
Dimensions
9.3 mm L
Diameter
22.12 mm
Length
9.3 mm
Transducer Function
Microphone
Device Type
Microphone
Directivity
Omni
External Diameter
22.12mm
Output Impedance
300ohm
Drain Current Max
50µA
Terminal Type
Wire Leads
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
423-1015
MR-23151
MR-3151
MR3151
MR-23151
MR-3151
MR3151
MR SERIES
The MR Series Assemblies consist of a speaker element attached to a waterproof
bellows assembly. They may be panel mounted, and are suitable for outdoor use
or repeated submersion.
CB SERIES
The CB Series Transceiver offers high electro-acoustic efficiency to conserve power in
push-to-talk radio handsets and other battery operated equipment. The CB is available
with mounting pins to facilitate assembly to a PC board. Model CB-23817-000 is designed
to survive submersion in water.
M M o o d d e e l l
MR-23333-000
M M o o d d e e l l
CB-22849-000
CB-22850-000
CB-23817-000
– Balanced Armature Speaker 25.15 x 25.15 x 9.65 (mm)
– Waterproof Speaker 22.12 DIA x 9.3 (mm)
Sensitivity @ 1kHz
Sensitivity @ 1kHz
(dB SPL)
(dB SPL)
100
73
73
83
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Highly waterproof – no loss of performance after
immersion in 15m water
Corrosion resistant
Withstands explosive decompression
Design proven in rugged environments
Leads attached
High resistance to mechanical shock
Acoustically transparent bellows
Resists effects of mud, sand, and salt encrustation
Excellent sound quality
High speech intelligibility, stability, and reliability
Suitable for PCB mounting
Can function as a microphone or beeper
Various impedances
Face and edge port locations available
Port Location
Port Location
Edge
Edge
Edge
Face
www.knowles.com
Impedance @ 500Hz
Impedance @ 500Hz
SPECIALTY TRANSDUCERS – Speakers
(Ohms)
(Ohms)
21
24
48
48
Max SPL @ 500Hz
Max SPL @ 500Hz
(dB SPL)
(dB SPL)
80.5
80.5
110
95
125
115
105
95
85
100
90
80
70
60
50
100
Max SPL @ 1st Peak
Max SPL @ 1st Peak
2
(dB SPL)
(dB SPL)
2
96.5
96.5
129
107
3
3
4
4
5
6 7 8 9
5
6 7 8 9
FREQUENCY (Hz)
Note: All performance curves are typical
FREQUENCY (Hz)
1k
1k
2
2
3
3
4
4
5
5
6 7 8 9
6 7 8 9
10k
10k
23