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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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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) 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
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT EK-23027-P35 Knowles 1: $29.48 46In Stock	Mfr. Part # EK-23027-P35 Mouser Part # 721-EK-23027-P35	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT Learn More about Knowles subminiature performance microphones	Datasheet	46In Stock	$29.48 $23.85 $21.63 View $19.38 $18.07 $16.73	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
	Microphones -53 Sens, 12S Port Std. Rsp. 3500-5000 EK-23024-C36 Knowles 1: $43.52 2,746In Stock	Mfr. Part # EK-23024-C36 Mouser Part # 721-EK-23024-C36	Knowles	Microphones -53 Sens, 12S Port Std. Rsp. 3500-5000 Learn More about Knowles subminiature performance microphones	Datasheet	2,746In Stock	$43.52 $33.25 $30.15 $28.09 View $26.18 $25.80 $24.35	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
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT EK-23024-000 Knowles 1: $41.11 108In Stock 300Expected 2026-11-13	Mfr. Part # EK-23024-000 Mouser Part # 721-EK-23024-000	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT Learn More about Knowles subminiature performance microphones	Datasheet	108In Stock 300Expected 2026-11-13	$41.11 $32.07 $29.48 $27.46 View $25.69 $24.35 Quote	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
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT EK-23027-C36 Knowles 1: $43.52 165In Stock	Mfr. Part # EK-23027-C36 Mouser Part # 721-EK-23027-C36	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 0KP PORT Learn More about Knowles subminiature performance microphones	Datasheet	165In Stock	$43.52 $33.25 $30.15 $29.82 View $27.79 $25.80 $25.53 Quote	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
	Microphones 5.56 X 3.98 X 2.21MM -57 SENS, 12S PORT EK-23028-C36 Knowles 1: $41.05 417In Stock	Mfr. Part # EK-23028-C36 Mouser Part # 721-EK-23028-C36	Knowles	Microphones 5.56 X 3.98 X 2.21MM -57 SENS, 12S PORT Learn More about Knowles subminiature performance microphones	Datasheet	417In Stock	$41.05 $31.85 $28.90 $26.90 View $25.07 $24.71 $24.06 Quote	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
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 3S PORT EK-23032-C36 Knowles 100: $23.92 Non-Stocked	Mfr. Part # EK-23032-C36 Mouser Part # 721-EK-23032-C36	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 3S PORT Learn More about Knowles subminiature performance microphones	Datasheet	Non-Stocked	$23.92	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
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT EK-23024-C04 Knowles Non-Stocked	Mfr. Part # EK-23024-C04 Mouser Part # 721-EK-23024-C04	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT Learn More about Knowles subminiature performance microphones	Datasheet	Non-Stocked		Request a Quote			Omnidirectional			- 53 dBA	SMD/SMT	5.56 mm	3.98 mm	2.21 mm
	Microphones 5.56 X 3.98 X 2.21MM -55 SENS, 12S PORT EK-27263-000 Knowles Non-Stocked	Mfr. Part # EK-27263-000 Mouser Part # 721-EK-27263-000	Knowles	Microphones 5.56 X 3.98 X 2.21MM -55 SENS, 12S PORT Learn More about Knowles subminiature performance microphones		Non-Stocked		Request a Quote			Omnidirectional	4.4 kOhms	50 uA	- 53 dBA	SMD/SMT	5.56 mm	3.98 mm	2.21 mm	1.3 V
	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT EK-27263-C05 Knowles Non-Stocked	Mfr. Part # EK-27263-C05 Mouser Part # 721-EK-27263-C05	Knowles	Microphones 5.56 X 3.98 X 2.21MM -53 SENS, 12S PORT Learn More about Knowles subminiature performance microphones		Non-Stocked		Request a Quote			Omnidirectional	4.4 kOhms	50 uA	- 53 dBA	SMD/SMT	5.56 mm	3.98 mm	2.21 mm	1.3 V