Subminiature Electret Microphones EA-21842-G31
EA-21842-G31
Compact electret condenser microphones designed for high-performance audio capture in space-constrained and rugged environments.
Brand: Knowles
Manufacturers:
Product Overview
Features
- Available in diameters as small as 2.59 mm with cylindrical or rectangular housings
- Integral FET amplifiers and high electroacoustic sensitivity
- Noise-canceling, omni-directional, and unidirectional variants
- RFI/EMI suppression and electrical high-pass filter options
- Rugged construction with high resistance to vibration and mechanical shock
- Customizable port locations, tube lengths, and frequency responses
- Models with improved settling time and power feedthrough attenuation
Benefits
- Enables clear voice pickup in noisy or mobile environments
- Supports compact product designs without sacrificing performance
- Reduces electromagnetic interference in sensitive applications
- Enhances audio quality with low noise and optimized frequency tuning
- Increases durability in industrial, medical, and wearable use cases
- Simplifies integration with flexible mechanical and electrical configurations
- Improves startup performance and signal stability in directional applications
Target Applications
- Headsets and communication devices
- Medical diagnostic and monitoring equipment
- Industrial wearables and safety systems
- Smart glasses and augmented reality (AR) devices
- Voice-controlled consumer electronics
- Surveillance and security systems
Specifications
| Type | Electret Condenser |
|---|---|
| Part Number | EA-21842-G31 |
| Product | Microphone |
| Product Type | Electret Condenser |
| Range | EA |
| Frequency Range | 10 Hz ~ 10 kHz |
| Impedance | 3.5 kOhms |
| Sensitivity | -59dB ±3dB @ 74dB SPL |
| Voltage | 1.3 V |
| Voltage Range | - |
| Port Location | - |
| Output Type | Analog |
| Direction | Omnidirectional |
| Shape | Rectangular |
| Height | 0.089" (2.26mm) |
| Dimensions | 0.219" L x 0.157" W (5.56mm x 3.99mm) |
Product Documentation
Datasheets
Design Files
3D Models
Additional Resources
Distributor Inventory
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| Part Number | Part Description | Quantity | Distributor |
|---|---|---|---|
| EA-21842-G31 | KNOWLES | 30 |
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