ED-26821-000 Knowles Acoustics, ED-26821-000 Datasheet - Page 26

SPEAKER Z=10.2 OHMS PORT ON END

ED-26821-000

Manufacturer Part Number
ED-26821-000
Description
SPEAKER Z=10.2 OHMS PORT ON END
Manufacturer
Knowles Acoustics
Series
EDr
Type
Magnetic, Balanced Armature, End Portr
Datasheets

Specifications of ED-26821-000

Frequency Range
200Hz ~ 4.4kHz
Impedance
10.2 Ohm
Size / Dimension
6.32mm L x 4.31mm W x 2.97mm H
Sound Pressure Level
107dB
Termination
Solder Pads
Shape
Rectangular
Termination Style
Wire
Dimensions
6.32 mm L x 4.31 mm W x 2.97 mm D
Depth
2.97 mm
Length
6.32 mm
Width
4.31 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Rated
-
Power - Max
-
Material - Cone
-
Material - Magnet
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
423-1112
26
MICROPHONES
Microphones measure sound pressure. Inside a Knowles microphone is a thin flexible diaphragm, an electrically
charged plate, and an amplifier (Fig. 1). The output voltage is proportional to changes in the small separation
between the diaphragm and the charged plate (Fig. 2).
As sound pressure inside the front cavity increases, the diaphragm is pushed closer to the plate. As the
pressure decreases, it moves further away. The motion of the diaphragm produces a small electrical signal that
is amplified by a miniature circuit inside the microphone.
The sensitivity of a typical Knowles’ microphone is measured in units of dB relative to 1 Volt per 0.1 Pascal.
Fig 1: Cross section of a Knowles EM microphone
FIG. 2: EM diaphragm and electret
MICROPHONE AND SPEAKER BASICS
MICROPHONE AND SPEAKER BASICS
AMPLIFIER
OUTPUT TERMINAL
CHARGE PLATE
CHARGE PLATE
DIAPHRAGM
DIAPHRAGM
www.knowles.com
FRONT CAVITY
AIR GAP SEPARATION
WIRE
SOUND PRESSURE

Related parts for ED-26821-000