High-Temperature Resistant Electret Condenser Microphone

The ECM-B4013AL38RC-SMD is a 4 × 1.3 mm SMD microphone suitable for TWS Bluetooth headsets, speakers, toys, and similar products. With omnidirectional directivity and a sensitivity of -38dB±3, it ensures clear sound capture.

🚫 Factory direct sales only – no retail.
Minimum order quantities (MOQs) apply.
Suitable for brand owners and manufacturers only.
📞 Please contact us to discuss your project and order details.
🧪 Sample

Free sample – shipping extra

🧭 Trial Order

From 500 pcs (1st order only)

📦 MOQ

5,000 pcs (mixed models allowed)

  • Model: ECM-B4013AL38RC-SMD
  • Dimensions: 4 × 1.3 mm
  • Directivity: Omnidirectional
  • Sensitivity: -38dB±3
  • Impedance: 2.2KΩ
  • S/N Ratio: 58dB
  • Max SPL: 110dB
  • Operating Voltage: 2Vdc
  • Frequency Response: 50Hz~16KHz
RoHS Certification UL Certification
Share:

Technical Specifications

The 4013 surface-mount microphone head features high-temperature resistance and interference resistance, thanks to its SMD (Surface Mount Device) microphone core.

Standard Test Circuit

Standard Test Circuit

Test conditions: RL=2.2kΩ, VS=2V, C1=10pF, R1=330Ω.

Typical Frequency Response

Typical Frequency Response

Frequency response is flat from 50Hz to around 3kHz, with a gradual decline starting at 3kHz up to 16kHz.

Dimensions (UNIT: mm)

Appearance Dimension

Compact SMD electret microphone measuring 4mm in diameter and 1.3mm in height.

Packaging Overview

SMD Microphone Packaging
  • Use ESD-safe reel and carrier tape for packing.
  • Quantity per reel: approx. 1,000 to 5,000 pcs (varies by model).
  • Each reel is sealed in a moisture-proof, anti-static bag.
  • Anti-static measures are strictly followed during packaging.
  • Labeling includes part number, quantity, lot number, and production date.

Reliability Tests

Sampling Process

  1. 1
    Confirm customer requirements:
    Review product application, microphone capsule specifications, usage scenarios, and sound quality needs.
  2. 2
    Recommend and specify:
    Provide recommended microphone capsule models and detailed specifications for customer evaluation.
  3. 3
    Sample provision and testing:
    Deliver microphone samples for customer testing and feedback purposes.
  4. 4
    Optimize and finalize:
    Refine microphone design based on feedback, finalize samples, and proceed to mass production upon quality approval.

Our Certificates

ECMIC Microphone Manufacturer Certificates

Our production meets ISO 9001:2015 and ISO 14001:2015 standards and is tailored for automotive applications under the IATF 16949:2016 standard, ensuring comprehensive quality management. Additionally, our products comply with ROHS, CE, and FCC requirements.

Quality Assurance

Incoming Quality Control

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

Process Quality Control

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

Outgoing Quality Control

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

Acoustic Laboratory

B&K Audio Analyzer

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

Imaging Mapping Analyzer

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

XRF Analyzer

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

Automatic Workshop

Automatic Workshop

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

Automatic Workshop

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

Automatic Workshop

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

Reviews

There are no reviews yet

Add a review
High-Temperature Resistant Electret Condenser Microphone High-Temperature Resistant Electret Condenser Microphone
Rating*
0/5
* Rating is required
Your review
* Review is required
Name
* Name is required
Add photos or video to your review

Related Products

6mm Robot Electret Microphone Capsule with Pins

  • Model: ECM-B6027AP2.8-30RC
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -30dB±2

9.7mm Voice Recognition Electret Microphone Insert with Leads

  • Model: ECM-B9745AL30RC-L100
  • Dimensions: 9.7 × 4.5 mm
  • Sensitivity: -30dB±2

3mm Surface Mount Toy Microphone

  • Model: ECM-B3013AL-SMD-42
  • Dimensions: 3 × 1.3 mm
  • Sensitivity: -42dB±3

6mm Surface Mount Electret Microphone

  • Model: ECM-B6027AL-SMD-40
  • Dimensions: 6 × 2.7 mm
  • Sensitivity: -40dB±3
Email Us WhatsApp Us