14mm Cardioid Electret Microphone Element for Live Streaming

The ECM-B1463UML38-727 is a 14mm cardioid electret microphone capsule with -38dB sensitivity and 70dB S/N ratio, ideal for live streaming and karaoke microphones. It offers clear, focused sound pickup with low noise for consistent vocal performance.

Model: ECM-B1463UML38-727
Dimensions: 14 × 6.3 mm
Directivity: Unidirectional
Sensitivity: -38 dB ± 2
Impedance: 2 kΩ
S/N Ratio: 70 dB
Max SPL: 110 dB
Operating Voltage: 2 Vdc
Frequency Response: 100 Hz ~ 16 kHz
Current Consumption: 200 μA

Request a Sample

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

Sample

Samples available
Evaluation available

Small Batch

From 200 pcs
Engineering validation

MOQ

5,000 pcs
Standard production

Certified

RoHS & UL
Quality & safety standards

Technical Specifications

Our 1463 unidirectional microphone head features ultra-low self-noise, high fidelity, and low power consumption, making it an ideal high-quality, low-noise mic core.

Standard Test Circuit

ECM-B1463UML38-727 Test Circuit: 15kΩ bias, 2V supply, 1μF output capacitor

15kΩ bias resistor, 2V DC supply, 1μF output capacitor.

Typical Frequency Response

ECM-B1463UML38-727 Frequency Response: Rising response curve with peak in upper-midrange and gradual roll-off

Rising response curve from the low frequencies, peaking in the upper-midrange, followed by a smooth high-frequency roll-off.

Dimensions (Unit: mm)

ECM-B1463UML38-727 Dimensions: Φ14×6.3mm with front mesh and rear sound port

Φ14×6.3mm housing with front-facing dustproof mesh and rear acoustic port for directional sound capture.

Packaging Overview

Standard packaging: 100 pcs per small box.
10 small boxes (1,000 pcs) are combined into one medium carton.
Several medium cartons are further packed into a large outer carton.
Pin-type microphones are protected with foam inside the small box.
Other types are packed directly or sealed in anti-static bags.

Reliability Tests

High Temperature Test: Microphone subjected to +80℃ for 100 hours, followed by 3 hours at room temperature.

Low Temperature Test: Microphone subjected to -40℃ for 100 hours, followed by 3 hours at room temperature.

Humidity & Heat Test: Microphone exposed to +55℃ and 85% relative humidity for 100 hours, followed by 3 hours at room temperature.

Thermal Shocking Test: Microphone subjected to [+80℃ 0.5H → room temp 1H → -40℃ 0.5H → room temp 1H] for 10 cycles, then exposed to room temperature for 3 hours.

Vibration Test: Microphone subjected to two hours of vibration in x, y, and z directions with frequencies of 10-55Hz and a 1.52mm amplitude.

Drop Test: Microphone dropped 5 times from a height of 1.0 meter onto a slippery marble floor, without packaging, and still performs normally.

Storage and Operating Temperature Range: Suitable for environments ranging from -35℃ to +60℃.

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.