Shenghui Electronic

Product Overview: The Power-Packed, Miniature Audio Alert Solution

Discover the ideal blend of compact design and robust performance with our 5.0x5.0x3.0mm 3V SMD Magnetic Buzzer. This ultra-miniature passive buzzer delivers a clear and powerful 4KHz alert at 78dB, engineered for applications demanding superior audible feedback in a tiny footprint. Designed for efficient SMT (Surface Mount Technology) integration, 3V buzzer serves as a reliable low-profile alert component for high-volume production lines. Whether for advanced wearables or dense IoT modules, this miniature buzzer provides the perfect solution for clear user notifications and system warnings.

Product Advantages

Optimized Power-to-Size Ratio

Despite its compact 5.0x5.0mm footprint, the optimized 3.0mm height allows for a more powerful magnetic transducer, achieving a louder 78dB sound output—miniature buzzers are ideal for environments requiring a more perceptible alert.

Designed for High-Speed Assembly

The industry-standard SMD package ensures compatibility with automated pick-and-place equipment, facilitating rapid, reliable, and cost-effective PCB assembly, which reduces production time and labor costs.

Efficient Low-Voltage Operation

Operating at a low 3Vp-p drive voltage makes it exceptionally suitable for battery-sensitive portable electronics, smart wearables, and wireless devices, contributing to excellent power efficiency and extended battery life.

Loud and Consistent Audio Performance

Generates a consistent 4KHz tone with a higher minimum sound pressure level of 78dB at 10cm, ensuring that alerts and feedback are clearly audible even in slightly noisier environments.

Durable and Long-Lasting Design

Miniature buzzers are Built with a robust magnetic driving mechanism that has no physical contact points susceptible to wear, ensuring high reliability, shock resistance, and a long operational lifespan for end products.

Product Applications

This high-performance 3V buzzer is engineered for a wide range of compact and portable electronic devices, including:

Wearable Technology: Smartwatches, fitness trackers, health monitors, wireless earbuds (for notifications, alarms, and haptic-sound feedback).

Internet of Things (IoT): Compact sensors, smart tags, environmental monitors, and portable data loggers.

Portable Consumer Electronics: Advanced remote controls, handheld gaming devices, digital cameras, and smart accessories.

Medical & Healthcare Devices: Portable diagnostic tools, medication reminders, and compact patient monitors requiring reliable alerts.

Why Choose US?

28+ Years of Electro-Acoustic Leadership

As a leading miniature buzzer manufacturer and supplier since 1996, Shenghui Electronic possesses deep, specialized expertise in designing and manufacturing precision micro-acoustic components for global markets.

Integrated Manufacturing & Strict QC

We maintain vertical integration over key production processes, enabling stringent in-house quality control at every stage. This ensures exceptional product consistency, traceability, and the flexibility to accommodate custom specifications and OEM/ODM projects.

Certified Global Supply Partner

Our components are trusted by internationally recognized brands. Our operations are backed by a robust ISO9001-certified quality management system, guaranteeing that every shipment meets the high standards required for integration into complex global supply chains.

Comprehensive Engineering & Customization Support

Beyond component supply, our technical team provides end-to-end support, from driver circuit design and acoustic consultation to developing fully customized miniature buzzer solutions tailored to your application's specific voltage, sound, and size requirements.

Competitive Factory Pricing & Reliable Scalability

Leveraging our efficient manufacturing base, we offer highly 3V buzzer with competitive factory-direct pricing without compromising on quality. Our scalable production capacity ensures a stable, dependable supply capable of supporting orders from prototype samples to mass production volumes.

What Our Customers Say

• Product Manager, Wearable Tech Company: "We needed a miniature buzzer that was both tiny and loud enough for outdoor use. Shenghui's 5x5x3mm model hit the perfect mark. The 78dB output made a significant difference, and their support during integration was excellent."

• Head of Procurement, IoT Device Maker: "Consistency and on-time delivery are critical for our JIT manufacturing. Shenghui has been our go-to supplier for SMD buzzers for multiple product cycles. Their quality is rock-solid, and they have never missed a deadline."

• Design Engineer, Consumer Electronics Firm: "The balance of size, sound level, and cost was exactly what we were looking for. Shenghui's 3V buzzer allowed us to maintain our compact form factor while improving the user experience with a clearer alert. The documentation and samples provided were spot-on."

FAQ

Q1: What is the difference between this 3.0mm height model and a 2.0mm model? Does it affect performance?

A: The primary difference is the internal acoustic chamber and magnetic circuit volume. The 3.0mm height (this model) typically allows for a larger internal space, which can be optimized to generate a higher sound pressure level (78dB vs. 72dB) while maintaining the same footprint. It offers a louder alert with minimal increase in PCB area. The choice depends on your specific sound output requirements and internal device height constraints.

Q2: How do I properly drive this passive magnetic buzzer? Can I connect it directly to a microcontroller?

A: This is a Passive (External Drive) Magnetic Buzzer. Miniature buzzer requires an external square wave signal (ideally at its resonant frequency of 4KHz with a 3Vp-p amplitude) to generate sound. It cannot be connected directly to a microcontroller GPIO pin or a DC voltage source, as this can damage the pin or the 3V buzzer. A simple drive circuit using a small NPN transistor or an N-channel MOSFET, controlled by the microcontroller, is required. Contact us for a standard application circuit diagram.

Q3: Do you offer customization for parameters like voltage, frequency, or terminal type? What is the MOQ?

A: Yes, absolutely. Customization is a core service at Shenghui Electronic. As a direct 3V buzzer manufacturer, we can adjust key parameters such as operating voltage (e.g., 1.5Vp-p, 5Vp-p), resonant frequency, sound pressure level, and terminal plating to meet your design needs. Our Minimum Order Quantity (MOQ) is flexible, especially for custom projects and volume production. Please contact our sales team at sales@shenghui.comwith your specifications for a detailed consultation and quote.

Part Number：ME505030-12R-4000-A-F

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