What Are the Two Microphone Technologies?
Electret condenser microphones (ECM) use a permanently charged diaphragm and backplate; MEMS microphones use a micro-machined silicon membrane integrated with an ASIC. Both convert sound to an electrical signal, but they differ in size, reliability, integration and supply.
SHENGQUN manufactures both as an OEM / ODM supplier: MEMS capsules with 62 dB SNR, and electret condenser capsules from 6–34 mm.
ECM vs MEMS: Side-by-Side
| Property | Electret Condenser (ECM) | MEMS |
|---|---|---|
| Core element | Charged diaphragm & backplate | Silicon membrane + ASIC |
| Size | 6–34 mm capsules | Very small SMD package |
| Assembly | Leaded / manual placement | Reflow-solder SMD (automated) |
| Reliability focus | Well-proven, low cost | High consistency, drop-in SMD |
| SNR example | Varies with capsule | 62 dB SNR in our line |
| Best for | Where cost and simple assembly matter | Automated, high-volume boards |
How to Choose
- Check assembly line. Automated SMD pick-and-place favors MEMS.
- Consider size. MEMS wins for ultra-thin devices.
- Balance cost and volume. ECM is often cheaper at high volume for leaded designs.
- Match sensitivity. Confirm both meet your target output level.
- Validate in the device. Test acoustic sealing and noise on your board.
Key Product Facts at SHENGQUN
The microphone decision is usually settled by measured specs rather than brand claims. Our MEMS microphones are specified at 62 dB SNR in compact SMD packages for automated assembly; electret condenser capsules span 6–34 mm with sensitivity around -30 dB. As an OEM / ODM manufacturer (founded 2003, 800+ employees, 600 million pieces annual output, serving 100+ countries), we support custom sensitivity, terminal and packaging configurations, with RoHS/REACH compliance available.
Frequently Asked Questions
Is MEMS more reliable than ECM?
MEMS offers high part-to-part consistency and reflow-solder assembly that suits automated lines; ECM remains a proven, cost-effective choice for leaded designs. Reliability depends on your assembly process and environment.
Which does SHENGQUN recommend for voice assistants?
Our MEMS microphones at 62 dB SNR are well suited to voice-assistant and conferencing boards; share your target specs for a recommendation.
Do you supply ECM capsules?
Yes, including electret condenser capsules from 6–34 mm; see Microphone Capsule.
Can I get samples of both to compare?
Yes. Share your board, size and SNR target, and we can supply both for evaluation.
How to Proceed
Email dgshengqun@gmail.com or call +86-15377742889 with your assembly process, size and target SNR to compare ECM vs MEMS.