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Jiangsu Meidi has been manufacturing electromagnetic buzzer products since 2011, focusing on acoustic component development, production process optimization, and customized electronic solutions. The company operates in-house manufacturing facilities with automated SMD production equipment and dedicated acoustic testing capabilities to support different product requirements.
Meidi produces approximately 15 million electromagnetic buzzers per month and provides OEM and ODM services covering product dimensions, pin configurations, electrical parameters, and acoustic characteristics. From initial design communication to prototype verification and mass production, the engineering team works with customers to ensure compatibility with their electronic systems.
SMD passive electromagnetic buzzers are compact surface-mount acoustic components developed for electronic devices requiring flexible sound control and space-efficient PCB integration. Unlike active buzzer designs with built-in oscillation circuits, these components rely on external drive signals from the host circuit to generate different tones.
The external control method allows engineers to adjust sound frequency, duration, and alert patterns according to software settings or circuit requirements. This flexibility makes them suitable for electronic products where customized audio feedback is required.
SMD passive electromagnetic buzzers operate through electromagnetic interaction between the coil, magnet, and diaphragm. When an alternating signal is applied, the diaphragm vibrates and produces the required acoustic output.
Compared with fixed-tone active models, passive structures provide greater control over sound characteristics. Engineers can combine these components with different control circuits to create various notification sounds, warning tones, or user interaction signals.
For applications requiring integrated driving circuits and direct voltage activation, customers may also consider SMD Magnetic Active Buzzer products.
The surface-mount package enables direct placement on PCB boards through automated SMT assembly processes. Compared with traditional leaded components, this structure helps optimize component layout, reduce assembly steps, and support compact electronic product designs.
Typical applications include:
Jiangsu Meidi supports customization based on customer PCB designs and product requirements, including dimensions, pin configurations, acoustic parameters, and packaging specifications.
During the development process, engineers evaluate installation space, drive conditions, and sound requirements to help select suitable buzzer specifications. Prototype samples and performance verification are available before volume production.
For different surface-mount acoustic requirements, Meidi also supplies related products including SMD Buzzer and other customized acoustic components.
When selecting an SMD passive electromagnetic buzzer, engineers usually consider:
Proper evaluation of these parameters helps ensure stable acoustic performance and compatibility with the final electronic device.
Jiangsu Meidi manufactures a wide range of acoustic products for different electronic applications. Customers can also explore related categories such as Electromagnetic Buzzer, SMD Piezoelectric Passive Buzzer, and customized buzzer solutions.
Q: What is the difference between an SMD passive electromagnetic buzzer and an active buzzer?
A: A passive electromagnetic buzzer requires an external drive signal to generate sound, allowing engineers to control frequency and sound patterns. An active buzzer contains an internal oscillator and produces a preset tone when powered.
Q: Can Meidi customize the frequency response and pin configuration for specific PCB designs?
A: Yes. Meidi provides OEM and ODM customization services covering dimensions, pin configurations, acoustic parameters, and product structures according to customer application requirements.
Q: What industries commonly use SMD passive electromagnetic buzzers?
A: They are commonly applied in smart devices, IoT products, medical electronics, control systems, and other compact PCB-based electronic equipment requiring programmable sound feedback.
The table below lists all standard specifications of products in this series. Customized solutions are available upon your request; please feel free to contact us for further customization requirements.
| Model | Product Image | Rated Voltage (Vo-p) | Operating Voltage (Vo-p) | Sound Pressure Level @10cm (dB) | Operating Current (mA) | Coil Impedance (Ω) | Resonant Frequency (Hz) | Operating Temperature (℃) | Weight (g) | Dimensions (mm) |
| MLT-4020H |
|
3 | 2~4 | ≥65 | ≤80 | 12±3 | 4000±300 | -20~+70 | 0.1 | 4.0×4.0×2.0 |
| MLT-5020 |
|
3 | 2~4 | ≥80 | ≤100 | 12±3 | 4000±300 | -20~+70 | 0.1 | 5.0×5.0×2.0 |
| MLT-5020H |
|
3 | 2~4 | ≥80 | ≤100 | 12±3 | 4000±300 | -20~+70 | 0.1 | 5.0×5.0×2.0 |
| MLT-5030 |
|
3 | 2~4 | ≥80 | ≤100 | 12±3 | 4000±300 | -20~+70 | 0.1 | 5.0×5.0×3.0 |
| MLT-7525-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤100 | 16±3 | 2700±300 | -30~+70 | 0.5 | 7.5×7.5×2.5 |
| MLT-7525-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.5 | 7.5×7.5×2.5 |
| MLT-8530-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤100 | 16±3 | 2700±200 | -30~+70 | 0.5 | 8.5×8.5×3.0 |
| MLT-8530-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×3.0 |
| MLT-8530H-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤100 | 16±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×3.0 |
| MLT-8530H-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×3.0 |
| MLT-8540-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤100 | 16±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×4.0 |
| MLT-8540-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×4.0 |
| MLT-8540H-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤80 | 16±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×4.0 |
| MLT-8540H-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.5 | 8.5×8.5×4.0 |
| MLT-9025-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤100 | 16±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×2.5 |
| MLT-9025-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×2.5 |
| MLT-9032-16R |
|
3.6 | 2.5~4.5 | ≥80 | ≤100 | 16±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×3.2 |
| MLT-9032-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×3.2 |
| MLT-9045-16R |
|
3.6 | 2.5~4.5 | ≥85 | ≤80 | 16±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×4.5 |
| MLT-9045-32R |
|
5 | 4.5~6.5 | ≥85 | ≤80 | 32±3 | 2700±300 | -30~+70 | 0.8 | Ø9.0×4.5 |
