Optimized MEMS Microphone for Arrays, Cameras, and Laptops

High-performance analog MEMS microphone with -42dBV/Pa sensitivity, 58dB SNR, and 132dB AOP. Excellent RF immunity for microphone arrays, cameras, and laptops.

Model: ECM-IM3729T421-N313H
Dimensions: 3.76 × 2.95 × 1.10 mm
Directivity: Omnidirectional
Sensitivity: -42 dB ± 3
Impedance: 300 Ω
S/N Ratio: 58 dB
Max SPL: 132 dB
Operating Voltage: 2 Vdc
Frequency Response: 100 Hz ~ 10 kHz
Current Consumption: 250 μA

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Evaluate our quality in your application. Standard lead time: 1-3 weeks.

Sample

Samples available
Evaluation available

MOQ

5,700 pcs (1 reel)
Standard production

Certified

RoHS & UL
Quality & safety standards

Technical Specifications

The ECM-IM3729T421-N313H is a high-performance analog MEMS microphone designed for consumer electronics requiring clear audio capture in compact designs. With sensitivity of -42dBV/Pa ±3dB and 58dB SNR, it delivers reliable audio performance across a wide dynamic range. Its 132dB SPL acoustic overload point ensures distortion-free recording even in high-volume environments. The microphone features excellent RF immunity, reducing interference in close proximity to wireless antennas. Operating voltage ranges from 1.6V to 3.6V, making it ideal for battery-powered devices. Housed in a compact 3.76mm x 2.95mm x 1.10mm package, it operates reliably from -40℃ to +100℃, making it suitable for microphone arrays, cameras, and laptops.

Application Scenarios

Microphone Arrays: Suitable for microphone arrays, enabling clear audio capture in complex environments.
Cameras: Ideal for security cameras and action cameras, delivering clear audio recording even in high-noise conditions.
Laptops: Designed for laptops, providing clear voice communication and recording quality.

Recommended Interface Circuit

Standard Test Circuit

Frequency Response Curve

Typical Frequency Response

Dimensions (UNIT: mm)

Appearance Dimension

Packaging Overview

Use ESD-safe reel and carrier tape for packing.
Quantity per reel: 5,000 pcs.
Each reel is sealed in a moisture-proof, anti-static bag.
Strict anti-static procedures are followed during the packing process.
Label includes model number, quantity, lot number, and manufacturing date.

Reliability Tests

Thermal Shock: 100 cycles of air-air thermal shock from -40℃ to +100℃ with 15-minute soaks.

High Temperature Bias: +125℃ environment while under bias for 1000 hours.

Low Temperature Bias: -40℃ environment while under bias for 1000 hours.

Temperature/Humidity Bias: +85℃/85% relative humidity environment while under bias for 1000 hours.

Mechanical Shock: 3 pulses of 10,000g in the X, Y, and Z directions.

Vibration Test: 10～60Hz: 0.35mm; 60～500Hz: 5g, 1 octave/min, Duration: 15 minutes per plane.

Drop Test: 1.5-meter height onto a concrete surface in three directions while in packaging.

Reflow: 5 reflow cycles with a peak temperature of +260℃.

ESD Protection: 150pF, 330Ohm, contact discharge ±2KV/air discharge ±4KV, 10 times, applying voltage to I/O pins.

Sampling Process

Confirm customer requirements:

Review product application, microphone capsule specifications, usage scenarios, and sound quality needs.

Recommend and specify:

Provide recommended microphone capsule models and detailed specifications for customer evaluation.

Sample provision and testing:

Deliver microphone samples for customer testing and feedback purposes.

Optimize and finalize:

Refine microphone design based on feedback, finalize samples, and proceed to mass production upon quality approval.

Quality Assurance

Conducting sampling inspections of incoming materials to ensure compliance with standard requirements.

Performing inspection audits to ensure the stability and control of the entire manufacturing process.

Conducting pre-shipment inspections to ensure that products meet established quality standards.

Acoustic Laboratory

Testing of background noise, sensitivity, frequency response curve, and directionality indicators.

Verification of the impact of different circuits, structural dimensions, materials, and processes on indicators.

Reliability testing at both the new product design stage and the mass production regular stage.

Automatic Workshop

Utilizing fully automated production lines to ensure high efficiency and consistency.

Equipped with state-of-the-art facilities, including a 10,000-level dust-free workshop.

Employing a rigorous 21-step process to guarantee product stability.