EK Series Omnidirectional Microphones

Knowles EK Omnidirectional Microphones provide a unique combination of size, performance and value. Knowles EK Microphones offer high electroacoustic sensitivity and low noise, making them ideal for applications where space allows. These popular microphones are available in many model varieties.

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Description Datasheet Availability Pricing (PEN) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Directional Properties
Impedance
Current Rating
Sensitivity
Termination Style
Length
Width
Depth
Operating Supply Voltage
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT
Datasheet
46In Stock
Min.: 1
Mult.: 1

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V
Knowles Microphones -53 Sens, 12S Port Std. Rsp. 3500-5000
Datasheet
1,684In Stock
1,300Expected 9/4/2026
Min.: 1
Mult.: 1

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 10 V
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT
Datasheet
608In Stock
Min.: 1
Mult.: 1

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT
Datasheet
200In Stock
Min.: 1
Mult.: 1

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 10 V

Knowles Microphones 5.56 X 3.98 X 2.21MM -57 SENS, 12S PORT
Datasheet
77In Stock
400Expected 9/4/2026
Min.: 1
Mult.: 1

Omnidirectional 4.4 kOhms 50 uA - 57 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 3S PORT
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 100
Mult.: 100

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT
Datasheet
Non-Stocked

Omnidirectional - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm
Knowles Microphones 5.56 X 3.98 X 2.21MM -55 SENS, 12S PORT Non-Stocked

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V
Knowles Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT Non-Stocked

Omnidirectional 4.4 kOhms 50 uA - 53 dBA SMD/SMT 5.56 mm 3.98 mm 2.21 mm 1.3 V