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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1. Tell Needs

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3. Sampling

Samples available upon request

4. Production

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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
13-24 of 71 Products
14mm Unidirectional Electret Microphone Capsule

14mm Unidirectional Electret Microphone Capsule

  • Model: ECM-B1465UML40-231045
  • Dimensions: 14 × 6.5 mm
  • Sensitivity: -40 dB ± 2
14mm Unidirectional Microphone Capsule for Broadcast

14mm Unidirectional Microphone Capsule for Broadcast

  • Model: ECM-B1463UML35-750
  • Dimensions: 14 × 6.3 mm
  • Sensitivity: -35 dB ± 2
16mm Anti-Interference Electret Capsule for Karaoke

16mm Anti-Interference Electret Capsule for Karaoke

  • Model: ECM-B1655UL45-541
  • Dimensions: 16 × 5.5 mm
  • Sensitivity: -45 dB ± 2
16mm Cardioid Electret Microphone Capsule for Streaming

16mm Cardioid Electret Microphone Capsule for Streaming

  • Model: ECM-B16063UL-SFN-03-Y
  • Dimensions: 16 × 6.3 mm
  • Sensitivity: -45 dB ± 3
16mm Cardioid Electret Microphone Element for Anchor

16mm Cardioid Electret Microphone Element for Anchor

  • Model: ECM-B1655UL44-280
  • Dimensions: 16 × 5.5 mm
  • Sensitivity: -44 dB ± 2
16mm Electret Microphone Element for Live Streaming

16mm Electret Microphone Element for Live Streaming

  • Model: ECM-B1663UL46-321
  • Dimensions: 16 × 6.3 mm
  • Sensitivity: -46 dB ± 2
25mm Cardioid Electret Condenser Microphone Element for Online Recording (Discontinued)

25mm Cardioid Electret Condenser Microphone Element for Online Recording (Discontinued)

  • Model: ECM-B2573UML33-23823
  • Dimensions: 25 × 7.3 mm
  • Sensitivity: -33 dB ± 2
25mm Cardioid Electret Microphone Cartridge

25mm Cardioid Electret Microphone Cartridge

  • Model: ECM-B2583UML32-23861
  • Dimensions: 25 × 8.3 mm
  • Sensitivity: -32 dB ± 2
25mm Electret Microphone Capsule without FET (Discontinued)

25mm Electret Microphone Capsule without FET (Discontinued)

  • Model: ECM-B25073UL-45
  • Dimensions: 25 × 7.3 mm
  • Sensitivity: -45 dB ± 3
25mm Large Diaphragm Electret Microphone Capsule

25mm Large Diaphragm Electret Microphone Capsule

  • Model: ECM-B25087UL-45
  • Dimensions: 25 × 8.7 mm
  • Sensitivity: -45 dB ± 2
4mm Electret Microphone Insert for Lavalier Mics

4mm Electret Microphone Insert for Lavalier Mics

  • Model: ECM-B4015UL-30
  • Dimensions: 4 × 1.5 mm
  • Sensitivity: -30 dB ± 2
4mm Gold-Plated Unidirectional Microphone Capsule for Two-Way Radios

4mm Gold-Plated Unidirectional Microphone Capsule for Two-Way Radios

  • Model: ECM-B4015UP40-474
  • Dimensions: 4 × 1.5 mm
  • Sensitivity: -40 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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