Unidirectional Microphones

Cardioid ECM microphone capsules with frequency-boosted design, up to 83dB SNR, delivering focused sound pickup for clear voice and instrument clarity. Ideal for broadcasting, music systems, and professional OEM applications.

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Directionality:
Omni-DirectionalUni-DirectionalBi-Directional
Diameter (Ø):
3mm4mm5.8mm6mm8mm9.7mm10mm14mm16mm25mm
Termination:
Surface MountPin TypeSolder Pads3 Solder PadsWire LeadsWire ConnectorSolder TabsWithout FET
49-60 of 71 Products
9.7mm Unidirectional Microphone Element for Headset Microphones

9.7mm Unidirectional Microphone Element for Headset Microphones

  • Model: ECM-B9750UL-SBN-44
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -44 dB ± 3
9.7mm Unidirectional Microphone Element for Long-Distance Pickup

9.7mm Unidirectional Microphone Element for Long-Distance Pickup

  • Model: ECM-B9750UL38-SDN-L60
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -38 dB ± 2
9.7mm Wide Cardioid Electret Condenser Microphone – High SPL for Headset, Conference & Live Voice

9.7mm Wide Cardioid Electret Condenser Microphone – High SPL for Headset, Conference & Live Voice

  • Model: ECM-B9750UL45-T3-127
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -45 dB ± 2
9mm Electret Microphone Capsule for Respirator Mask

9mm Electret Microphone Capsule for Respirator Mask

  • Model: ECM-EM212U-51
  • Dimensions: 9.7 × 9 mm
  • Sensitivity: -51 dB ± 2
Acoustic Guitar Microphone Capsule 10mm

Acoustic Guitar Microphone Capsule 10mm

  • Model: ECM-B1045UL-53
  • Dimensions: 10 × 4.5 mm
  • Sensitivity: -53 dB ± 2
Anti-Interference Electret Condenser Microphone Capsule with Korea RF Core

Anti-Interference Electret Condenser Microphone Capsule with Korea RF Core

  • Model: ECM-B1045UBT-Y390-967-2
  • Dimensions: 10 × 4.5 mm
  • Sensitivity: -46 dB ± 3
Bluetooth Helmet Microphone Capsule 6mm

Bluetooth Helmet Microphone Capsule 6mm

  • Model: ECM-B6027UL50-23702
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -50 dB ± 2
Broadcast Headset Microphone Capsule 6mm

Broadcast Headset Microphone Capsule 6mm

  • Model: ECM-B6027UL-906
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -35 dB ± 2
Car Cabin Electret Microphone – 9.7 × 5 mm, Overhead Lamp & Infotainment Screen

Car Cabin Electret Microphone – 9.7 × 5 mm, Overhead Lamp & Infotainment Screen

  • Model: ECM-B9750UP-45
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -45 dB ± 2
Conference Microphone Array Capsule 14mm

Conference Microphone Array Capsule 14mm

  • Model: ECM-B1465UL34-24395
  • Dimensions: 14 × 6.5 mm
  • Sensitivity: -34 dB ± 2
Dirt Bike Helmet Microphone Capsule

Dirt Bike Helmet Microphone Capsule

  • Model: ECM-B6027UL-50
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -50 dB ± 2
Electret Lapel Microphone Capsule 9.7mm

Electret Lapel Microphone Capsule 9.7mm

  • Model: ECM-B9750UL38-714
  • Dimensions: 9.7 × 5 mm
  • Sensitivity: -38 dB ± 2
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FAQs

Unidirectional microphones, also called cardioid microphones, focus pickup in the front direction, effectively reducing background noise. They are ideal for walkie-talkies, intercom systems, in-car voice input, conference microphones, and other scenarios that require clear voice capture.

Unidirectional microphones use front and rear sound holes to create a pressure gradient, picking up sound mainly from one direction. Omnidirectional microphones pick up sound evenly from all directions. Unidirectional mics work better in noisy environments, while omnidirectional mics are better for capturing ambient sounds.

ECM-B9750UP-45, a 9.7mm cardioid microphone designed for car stereo systems, effectively isolates noise, ideal for Bluetooth hands-free and voice control.

25mm cardioid microphones with high SNR, perfect for professional recording and live streaming:

Unidirectional microphones rely on front and rear sound holes to create the pressure gradient needed for directionality. Sealing these holes completely (to achieve IP67 waterproofing) would impair their function.
For more details, see: Waterproof Principles for Omnidirectional and Unidirectional Microphones
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