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5*3mm Miniature Smd Magnetic Buzzer

The 5 x 3mm miniature SMD magnetic buzzer is a compact small patch buzzer designed for highly space-limited electronic devices. With a rated voltage of 3V, operating range of 2V to 5V, resonant frequency of 4000Hz, and minimum sound output of 78dB at 10cm, it is suitable for small portable products, miniature control modules, and other applications that require a very compact SMT buzzer.
  • HSMT5030BS-03L-4.0-12-R

  • HC

  • Product name: 5030 mini square magnetic buzzer
  • Application: small patch buzzer
  • Rated Voltage (Vp-p): 3V
  • Operating Voltage (Vp-p): 2-5V
  • Resonant Frequency (Hz): 4000
  • Sound Output at 10cm (dB): ≥78
  • Current Consumption (mA): ≤100
  • Coil Resistance (Ω): 12±2
Availability:
Model HSMT5030BS-03L-4.0-12-R
Rated Voltage (Vp-p) 3
Operating Voltage (Vp-p) 2~5
Resonant Frequency (Hz) 4000
Current Consumption (mA) ≤100
Sound Output at 10cm (dB) ≥78
Coil Resistance (Ω) 12±2
Operating Temperature (℃) -20~+70
Storage Temperature (℃) -30~+80
Weight (g) 0.3
Housing Material LCP
RoHs Yes

Product Overview

The 5 x 3mm miniature SMD magnetic buzzer is designed for electronic products where installation space is extremely limited. Compared with standard SMT buzzers, this model offers a smaller footprint and is better suited for compact designs that still require audible feedback. The product page identifies it as a 5030 mini square magnetic buzzer and a small patch buzzer, both of which reflect its intended role in compact PCB-based devices.

As devices continue to become smaller and thinner, many product designers need acoustic components that can fit into narrow layouts without making the final product larger. This model helps solve that challenge by combining miniature dimensions, SMT compatibility, and practical sound output for prompt and reminder functions.

Its 3V rated voltage and 2V to 5V operating range also make it suitable for low-voltage electronic products. Although the sound output level is modest compared with larger alarm buzzers, it remains practical for close-range prompts and status indications in micro-electronic applications.

Key Features of the 5030 Miniature SMD Magnetic Buzzer

Extremely Compact Design for Space-Limited Products

The main strength of this buzzer is its miniature size. A 5 x 3mm patch buzzer is suitable for product categories where PCB layout is extremely restricted and only very small components can be used. This makes the product relevant for miniature consumer electronics, compact control boards, and ultra-small electronic modules.

Suitable for Low-Voltage Electronics

The rated voltage is 3V, and the operating range extends from 2V to 5V. This allows the buzzer to be used in low-voltage circuits commonly found in compact electronic devices and battery-operated products.

Practical Prompt Sound Output

With sound output of at least 78dB at 10cm and resonant frequency of 4000Hz, this miniature SMD magnetic buzzer is suitable for near-range reminder sounds, status indicators, and prompt tones. It is ideal for products where an audible cue is necessary but installation space is very limited.

SMT Assembly Compatibility

As an SMD component, this buzzer is suitable for automated surface-mount production lines. This helps manufacturers improve production efficiency and maintain consistency in larger-volume assembly operations.

Lightweight and Compact for Portable Products

The buzzer weighs only 0.3g, which helps reduce the impact on compact and lightweight device design. For handheld or wearable electronics, component weight can be a relevant consideration together with size and thickness.

RoHS Compliance and Factory Support

The product is marked as RoHS compliant, and the supplier also indicates support for free samples and customer-driven customization. This is helpful for OEM buyers evaluating the buzzer for export-oriented electronics projects.

Why Choose a Miniature SMD Magnetic Buzzer

Miniature SMD magnetic buzzers are increasingly important because more electronic products now require compact footprints, thin structures, and SMT compatibility. In products such as portable electronics, compact monitoring devices, control modules, and miniaturized smart products, a larger buzzer may not fit the design constraints. A miniature buzzer like this model allows the product to retain an audible interface without taking up excessive board area.

Compared with larger buzzer models, this product focuses on integration convenience and space-saving rather than high SPL. That makes it particularly useful in close-range electronic applications and compact device architectures.

Applications

This 5 x 3mm miniature SMD magnetic buzzer can be used in:

· Portable consumer electronics

· Miniature electronic modules

· Small handheld devices

· Compact medical electronics

· Prompt and reminder units

· Space-limited PCB products

· Wearable and smart device modules

· Micro alarm or status indication applications

Its compact size makes it best suited for electronics that require a very small sound component for close-range user interaction.

Benefits for OEM Buyers and Product Developers

OEM buyers often need a miniature buzzer that can fit product size requirements while still remaining easy to source and suitable for SMT production. This model offers a compact footprint, low-voltage compatibility, and practical sound performance, making it a useful choice for prototype and mass-production projects.

Because the buzzer is aimed at micro-sized applications, it is especially useful for engineering teams that need to reduce the component footprint without completely removing audible prompts from the design. Free sample support can further help development teams validate the product quickly.

OEM and Customization Support

HC Electronic states that customization is available according to customer requirements. In miniature product development, customization support can be important because many designs have strict mechanical and acoustic constraints. OEM buyers can benefit from a supplier that is able to discuss project-specific needs and support evaluation samples.

Factory Strength and Production Capability

Hongchang Electronic has manufacturing experience since 1997 and employs nearly 200 staff members, including acoustic engineers. The company also indicates a factory building area of more than 10,000 square meters. For buyers, this supports confidence in supply continuity and manufacturing capability.

Quality Control and Reliability

The supplier indicates that quality is controlled through a complete process and inspection system. This is especially important for miniature acoustic components, where small variations can affect sound consistency and integration results. Stable sample-to-production consistency is a practical concern for OEM projects.

Storage and Handling Notes

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 listed shelf life is six months after delivery under sealed and unopened package conditions.

Once the package is opened, it is recommended to use the products as quickly as practical to help maintain original characteristics.

Frequently Asked Questions

1. What is the model number of this buzzer?

The model shown on the product page is HSMT5030BS-03L-4.0-12-R.

2. What is the rated voltage?

The rated voltage is 3V, and the operating range is 2V to 5V.

3. What is the resonant frequency?

The resonant frequency is 4000Hz.

4. What is the sound output?

The sound output is specified as 78dB minimum at 10cm.

5. What is the coil resistance?

The coil resistance is 12 +- 2 ohms.

6. What applications is this buzzer suitable for?

It is suitable for small portable products, miniature electronics, compact control modules, and other highly space-constrained designs.

7. Do you provide free samples?

Yes. The supplier states that free samples are available, subject to confirmation with sales.

8. Is the product RoHS compliant?

Yes. The product page marks the buzzer as RoHS compliant.

Why Choose HC Electronic

· 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 communication for compact device projects


If you are searching for a 5 x 3mm miniature SMD magnetic buzzer for a highly compact device, this 5030 mini square magnetic buzzer is designed for micro-sized electronic products that still require prompt or reminder sound functions. It combines a very small patch footprint with low-voltage compatibility and SMT production convenience, making it suitable for miniature electronics and tightly packed PCB layouts.

As electronic products continue to shrink, the demand for smaller acoustic components increases. Engineers may still need an audible interface, but standard buzzers can be too large for the available board area. This small patch buzzer addresses that problem with a micro-scale design, making it useful for portable devices, compact modules, and products where every millimeter matters.

The product offers a 3V rated voltage, 2V to 5V operating range, 4000Hz resonant frequency, and 78dB minimum sound output at 10cm. For a buzzer of this size, these parameters are practical for close-range status indications, confirmation tones, and prompt sounds. It is not intended as a high-power warning buzzer, but it is well suited for compact devices that need a simple audible signal.

Its SMT structure also makes it suitable for automated assembly lines. This matters for OEM manufacturers because SMT-compatible buzzers help improve assembly efficiency and maintain consistency across production volumes. Combined with free sample support and customization availability, this product can be a practical choice for development teams and sourcing teams alike.

For buyers looking for keywords such as 3V miniature SMT magnetic buzzer, micro SMD buzzer supplier, small patch buzzer manufacturer, or compact magnetic buzzer for small devices, this model matches those application requirements well. It is especially useful when size reduction is the top design priority.

Whether you are developing a compact electronic module, wearable product, small consumer device, or miniature control board, this 5 x 3mm miniature SMD magnetic buzzer provides an efficient way to add sound capability without sacrificing compact design goals.

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