Shenghui Electronic

Product Overview: The Premium Mid-Size Audio Alert Solution for Demanding Applications

Introducing the high-performance 8.5x8.5x3.0mm SMD Magnetic Buzzer, engineered to deliver robust and reliable audible feedback where standard miniature components fall short. This mid-size passive buzzer generates a powerful 4KHz tone at 80dB, providing a clear and authoritative audible alert signal for applications requiring superior sound penetration. Optimized for seamless SMT (Surface Mount Technology) integration, electro magnetic buzzer stands as a versatile and dependable electronic notification component for consumer, industrial, and automotive electronics, balancing excellent acoustic output with a compact footprint.

Product Advantages

Superior Acoustic Output & Clarity

The 8.5x8.5mm footprint and 3.0mm height allow for a larger internal magnetic circuit and acoustic chamber, enabling a strong 80dB sound pressure level. This ensures clear, penetrating alerts that are effective in a wide range of environmental conditions.

Optimized 3.6Vp-p Drive for Modern Electronics

The 3.6Vp-p operating voltage is specifically tailored for compatibility with common lithium-based battery configurations (e.g., single-cell Li-ion) and modern 3.3V logic systems, providing optimal performance and efficiency without requiring voltage boosters.

Robust Construction for Enhanced Reliability

The increased internal volume allows for a more robust transducer design, resulting in improved durability, better heat dissipation, and greater resistance to mechanical shock and vibration, ensuring long-term performance stability.

Designed for High-Yield Manufacturing

The standard SMD package ensures excellent compatibility with automated pick-and-place assembly lines. This design facilitates high-speed, high-volume production with minimal placement issues, reducing manufacturing costs and improving throughput.

Excellent Value & Performance Balance

This electro magnetic buzzer model offers a significant step up in sound output and robustness compared to smaller 5mm or 7mm buzzers, without the substantial cost increase associated with larger 12mm+ components, representing an outstanding price-to-performance ratio.

Product Applications

This reliable and loud electro magnetic buzzer is ideally suited for a variety of electronic devices that require dependable and noticeable audible feedback:

Industrial & Commercial Equipment: Handheld terminals, barcode scanners, point-of-sale (POS) systems, measurement instruments, and control panel status indicators.

Automotive & Transportation Electronics: Aftermarket security systems, telematics devices, fleet management trackers, and in-cabin alert systems for commercial vehicles.

Consumer Durables: High-end smart home controllers, intercoms, security system keypads, and premium remote controls.

Telecommunications & Networking: VoIP desk phones, network switches/routers (for system alerts), and communication devices.

Power Tools & DIY Equipment: Battery-operated power tools and measuring devices for completion alerts or error warnings.

Manufacturer Advantages: Shenghui Electronic

Industry Veteran with Deep Expertise

As a renowned buzzer manufacturer and supplier with over 28 years of experience (since 1996), Shenghui Electronic possesses unparalleled expertise in electro-acoustic design, ensuring components are engineered for both performance and manufacturability.

End-to-End Quality Control

We maintain vertical integration over critical production stages, from precision coil winding to final acoustic testing. This allows for stringent in-process quality control, guaranteeing every unit meets our high standards for consistency and reliability before shipment.

Certified Global Manufacturing Partner

Our facility operates under a strict ISO9001:2015 certified quality management system. This certification, coupled with regular audits by global clients, affirms our commitment to being a trustworthy and capable manufacturing partner for international supply chains.

Full-Service Engineering & Customization

We provide more than just components. Our technical team offers comprehensive support, from driver circuit design to acoustic consultation, and specializes in delivering fully customized OEM/ODM electro magnetic buzzer solutions to meet unique voltage, sound, size, or performance requirements.

Scalable Production & Competitive Direct Pricing

Leveraging our efficient, large-scale manufacturing base, we offer true factory-direct competitive pricing for bulk orders. Our scalable production lines and robust supply chain management ensure reliable, on-time delivery for orders of any volume, from prototypes to mass production.

• Project Manager, Industrial Scanner Company:"We needed a electro magnetic buzzer that was loud enough to be heard in warehouse environments but still fit our compact housing. Shenghui's 8.5mm buzzer with 80dB output was the perfect solution. The 3.6V rating matched our battery pack perfectly, and the performance has been flawless across thousands of units."

• Head of Procurement, Automotive Telematics Firm:"Reliability under varying temperatures and vibration is critical for our industry. Shenghui has been our chosen supplier for mid-size SMD buzzers for years due to their consistent quality and robust construction. They understand the requirements of automotive-grade applications."

• Lead Engineer, Smart Home Device Maker:"The sound quality and output level of this buzzer significantly enhanced the user experience of our electro magnetic buzzer product. Shenghui provided excellent samples and clear datasheets. Their ability to meet our specific voltage requirement (3.6Vp-p) without a long lead time was impressive."

Frequently Asked Questions (FAQ)

Q1: Why is the drive voltage 3.6Vp-p instead of the more common 3V or 5V?

A: The 3.6Vp-p rating is intentionally optimized for systems powered by a single lithium-ion or lithium-polymer cell (nominal 3.7V). It allows the electro magnetic buzzer to be driven efficiently directly from the battery or a regulated 3.3V line with minimal loss, maximizing loudness and efficiency in portable, battery-powered devices. It can typically be driven effectively with a 3.3V microcontroller PWM signal.

Q2: How do I properly drive this passive buzzer in my design? Can I use a 5V microcontroller?

A: This is a Passive Magnetic Buzzer and requires an external drive circuit. A simple circuit using an NPN transistor (e.g., MMBT3904) or an N-channel MOSFET is standard. The GPIO pin from your microcontroller (whether 3.3V or 5V logic) controls the transistor, which switches the 3.6Vp-p drive signal to the buzzer. Never connect the buzzer directly to a DC voltage or a microcontroller pin. Contact us for a standard application schematic.

Q3: We are considering this for an automotive accessory. Does it have any specific qualifications?

A: While this is a standard commercial-grade component, Shenghui Electronic has extensive experience supplying electro magnetic buzzers for automotive applications. We can discuss your specific requirements (e.g., extended temperature range, different soldering profiles, or material changes) and provide customized variants or testing data to support your qualification process. Please contact our sales and engineering teams to discuss your project in detail.

Part Number：MES8585030-16R-3-6V-2700-F

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