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HSMT8540AS-3.6L-2.731-16-R
HC
| Model | HSMT8540AS-3.6L-2.731-16-R | |||
| Rated Voltage (Vp-p) | 3.6 | |||
| Operating Voltage (Vp-p) | 2～4 | |||
| Resonant Frequency (Hz) | 2731 | |||
| Current Consumption (mA) | ≤100 | |||
| Sound Output at 10cm (dB) | ≥85 | |||
| Coil Resistance (Ω) | 16±3 | |||
| Operating Temperature (℃) | -20～+70 | |||
| Storage Temperature (℃) | -30～+80 | |||
| Weight (g) | 0.8 | |||
| Housing Material | LCP | |||
| RoHs | Yes | |||
The 8.5 x 4mm 85dB tiny SMD magnetic buzzer is designed for compact electronic products that require a small, practical, and SMT-friendly sound component. The product page positions this model as an 8540 mini square electromagnetic buzzer and a low cost patch buzzer, making it relevant for portable devices, simple reminder systems, compact electronic modules, and other products where cost control and compact size are both important.
In many small product designs, the buzzer is not the primary function of the device, but it still plays an important role by providing prompt tones, alert signals, or basic audible feedback. For such applications, a tiny SMD buzzer like this model can be a practical choice because it offers usable sound output in a small footprint and supports standard SMT production processes.
This model also emphasizes reflow soldering compatibility, which is important for modern electronic manufacturing. For OEM buyers, that means easier integration into automated production lines and more consistent assembly performance for medium and large-volume orders.
The compact 8.5 x 4mm structure makes this buzzer well suited for small electronic devices and dense PCB layouts. It is large enough to provide practical sound output but still small enough to fit into compact product housings and surface-mount designs.
With a minimum sound output of 85dB at 10cm, this product provides a practical sound level for prompts, reminders, and basic alerts in compact products. This makes it suitable for devices where audible output is important but does not need to reach high-alarm levels.
The rated voltage is 3.6V, and the operating range is 2V to 4V. This supports many low-voltage electronic designs and is useful in products that rely on small internal power systems or compact control circuits.
The product description references reflow soldering use, which indicates suitability for SMT assembly processes. For electronics manufacturers, this is an important factor because it improves production efficiency and supports stable automated assembly.
This buzzer is presented as a low-cost patch buzzer, which makes it attractive for volume projects where both size and cost matter. For products with high production quantities, selecting a practical and economical SMT buzzer can contribute to overall cost efficiency.
With a weight of 0.8g and RoHS-compliant construction, the buzzer is suitable for modern export-oriented electronics projects and lightweight compact product designs.
Tiny SMD magnetic buzzers are useful in compact electronic designs where a standard buzzer may be too large or unnecessary. These products are often selected for portable modules, prompt devices, consumer electronics, and reminder functions where a moderate sound level is enough and product size is a major design priority.
This 8.5 x 4mm model is especially practical for buyers who need a balance of compact size, audible prompt performance, SMT compatibility, and cost control. It fits the needs of many common low-cost electronic products without adding unnecessary design complexity.
This 8.5 x 4mm 85dB tiny SMD magnetic buzzer can be used in:
· Portable electronic products
· Prompt and reminder devices
· Compact control modules
· Small consumer electronics
· Electronic reminder units
· Low-cost patch buzzer applications
· Reflow soldering SMT projects
· Miniature device signal modules
Its size and sound level make it especially useful for products that need compact audible feedback in a mass-production SMT environment.
OEM buyers often look for components that are compact, easy to assemble, reasonably priced, and stable in production. This model fits those requirements by combining a tiny footprint, usable sound output, and reflow soldering compatibility. It is suitable for projects where compact size and cost efficiency are both important.
For development teams, the availability of free samples and factory customization support can help speed up product validation and reduce sourcing uncertainty during project planning.
HC Electronic states that customization is available according to customer requirements. For OEM and ODM projects, customization may involve packaging preferences, acoustic target adjustments, structural requirements, or project-specific integration needs. This helps customers optimize component fit within their own products.
According to the company information on the website, Hongchang Electronic has been manufacturing acoustic components since 1997 and employs nearly 200 staff members, including acoustic engineers. The company also indicates a factory area of more than 10,000 square meters. This provides buyers with confidence in manufacturing support, engineering capability, and supply continuity.
The supplier indicates that quality is maintained through a complete process system and inspection system. For compact buzzers used in large production quantities, stable sample-to-production consistency is especially important. Reliable quality control helps reduce after-sales issues and supports smoother product qualification.
According to the product page, the product must not be washed. Recommended storage conditions are temperature from -10C to +40C and humidity from 15% to 85% RH in a stable environment. The shelf life is indicated as six months after delivery under sealed and unopened package conditions.
After the package is opened, the products should be used as soon as possible to help maintain stable characteristics.
The model shown on the product page is HSMT8540AS-3.6L-2.731-16-R.
The rated voltage is 3.6V, and the operating range is 2V to 4V.
The resonant frequency is 2731Hz.
The sound output is specified as 85dB minimum at 10cm.
The coil resistance is 16 +- 3 ohms.
It is suitable for compact electronic products, prompt devices, low-cost SMT products, and other applications requiring a tiny surface-mount buzzer.
Yes. The supplier states that free samples are available, subject to confirmation with sales.
Yes. The product page marks the product as RoHS compliant.
· Factory established in 1997
· Long-term experience in buzzer and acoustic component manufacturing
· Acoustic engineering support
· Free sample support
· OEM and customization capability
· Stable production and inspection process
· Factory direct support for compact SMT product sourcing
If you are sourcing an 8.5 x 4mm 85dB tiny SMD magnetic buzzer for a compact electronic product, this 8540 mini square electromagnetic buzzer is a practical option for low-cost SMT applications. It is designed to provide prompt sound functionality in a small footprint while remaining compatible with reflow soldering and standard surface-mount production workflows.
Many small electronic products do not require a very large or very loud buzzer, but they still need a clear and dependable sound signal. This is especially true in portable electronics, compact modules, prompt units, and other products where the buzzer serves as a basic feedback component rather than a high-power alarm. In such cases, a tiny SMD magnetic buzzer can be the right balance between acoustic function, product size, and cost.
This model provides a 3.6V rated voltage, 2V to 4V operating range, 2731Hz resonant frequency, and 85dB minimum sound output at 10cm. Those specifications make it suitable for prompt and reminder applications in compact devices. The 16 ohm coil resistance also helps define the product's electrical behavior for circuit integration.
The product is also presented as a reflow soldering magnetic buzzer and a low cost patch buzzer, which makes it particularly relevant for OEM manufacturers looking to control both production efficiency and component cost. For high-volume electronics projects, that combination is often an important purchasing factor.
For buyers searching terms such as tiny SMD magnetic buzzer, 85dB electronic patch buzzer, 3.6V low cost patch buzzer supplier, or small square SMT buzzer manufacturer, this model fits those requirements well. It is especially useful when a compact, economical, and SMT-ready buzzer is needed for product integration.
Whether you are designing a compact reminder product, a small control unit, a simple prompt device, or another low-cost SMT electronic product, this 8.5 x 4mm tiny SMD magnetic buzzer provides a useful balance of size, prompt sound output, and production compatibility.
