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  • Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer with Small Size 4 *4 *2mm for Electronic Alarm
Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer with Small Size 4 *4 *2mm for Electronic Alarm

Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer with Small Size 4 *4 *2mm for Electronic Alarm

  • 100 - 999 Pieces
    $1
  • 1000 - 9999 Pieces
    $0.60
  • >= 10000 Pieces
    $0.40

Customization:

Customized logo（Min.Order: 5000 pieces）
Customized packaging（Min.Order: 5000 pieces）
Graphic customization（Min.Order: 5000 pieces）
View product details

Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer with Small Size 4 *4 *2mm for Electronic Alarm

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Compact Audible Alert System: A 4x4x2mm SMT magnetic passive buzzer designed for space-constrained devices like cell phones, offering clear sound output for alarms and notifications.
  • Multi-Voltage Compatibility: Operates on 3V or 5V DC/AC input, with a maximum 30V p-p tolerance, enabling use in diverse electronic systems.

Key features

  • 1. Material Technology

    • With piezo and magnetic technology combined with a durable plastic housing, ensure reliable sound output in harsh environments.

  • 2. Interactive Design

    • With SMT (Surface Mount Technology) design, easily integrate into compact electronic devices without sacrificing performance.

  • 3. Performance Parameters

    • Supports 3V/5V operation with a maximum input of 30V P-P, offering flexibility across diverse power sources.

  • 4. Scenario Solutions

    • Compact 4x4x2mm size and continuous operation mode make it ideal for space-constrained devices like cell phones and wearable alarms.

  • 5. Certification Standards

    • Complies with safety and quality standards for electronic components*

Product details

Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer with Small Size 4 *4 *2mm for Electronic Alarm

The Cheap 3V 5V Cell Phone SMT Magnetic Passive Buzzer is a compact, versatile piezoelectric buzzer designed for electronic alarms and signaling devices. With dimensions of 4×4×2mm, it offers a space-saving solution while supporting both DC/AC input and operating at 3V/5V rated voltages. Its hybrid piezo-magnetic technology ensures clear, consistent sound output, even under continuous operation. The module’s durable plastic construction and 30V p-p max input voltage make it ideal for applications ranging from consumer electronics to industrial alarms.

Technical specifications

FeatureSpecificationApplication Scenario
Input TypeDC/ACVersatile integration into diverse circuits
Operating ModeContinuousLong-running alarms or notifications
Rated Voltage3V/5VCompatibility with common power sources
TechnologyPiezo + MagneticEnhanced sound clarity and durability
Max Input Voltage30V p-pWithstands voltage surges in harsh environments
Dimensions4×4×2mmSpace-efficient design for compact devices

Customization guide

Adjustable parameters for special needs:

  • Voltage Options: Choose between 3V or 5V rated voltages to match device power requirements.
  • Size: The ultra-compact 4×4×2mm form factor suits space-constrained designs like wearable tech or IoT devices.
  • Material: Durable plastic ensures resistance to mechanical stress, ideal for rugged environments.

Get inspired

With its hybrid piezo-magnetic design and small footprint, this buzzer is perfect for creating subtle alerts in smartphones or loud alarms in industrial systems. Its 30V p-p tolerance allows seamless integration into high-voltage circuits, while its continuous operation capability ensures reliability in 24/7 applications.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Sound Output (dB)70 dB+15% (80.5 dB)+30% (91 dB)
Max Voltage5V15V30V p-p
Dimensions4×4×2mm4×4×2mm4×4×2mm

Supplier's note

  1. Key Technical Breakthroughs:

    • Hybrid Piezo-Magnetic Tech: Combines clarity of piezo with the robustness of magnetic coils for superior sound quality.
    • 30V p-p Tolerance: Enables use in high-voltage systems, outperforming industry-standard 20V limits.
    • Compact Design: Reduces PCB space by 30% compared to traditional buzzers.

  2. Optimal Version Selection:

    • Base Model: Ideal for basic alarms (e.g., smartphones) needing 3V/5V operation.
    • Advanced Model: Suitable for industrial sensors or security systems requiring 15V resilience.
    • Pro Model: Best for heavy-duty applications like emergency alarms, leveraging triple the voltage tolerance of standard models.

With the Pro’s 30V p-p rating, you can safely handle voltage spikes in industrial settings. Pair its durability with the compact size to create reliable, space-efficient solutions.

Frequently asked questions

  • Which 3V/5V buzzer model is best for compact electronic devices like cell phones?

  • Is the 4×4×2mm SMT magnetic buzzer safe for 5V input in continuous operation?

  • How does piezo vs. magnetic technology affect performance in alarms?

  • Can the 3V/5V cell phone buzzer operate continuously without overheating?

  • What’s the maximum voltage the 30V P-P rated buzzer can handle safely?

  • Does the SMT design allow easy installation in circuit boards for alarms?

  • Are there custom sizes available for the 4×4×2mm magnetic buzzer modules?

  • Is the magnetic passive buzzer suitable for battery-operated alarm systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Piezoelectric BuzzerLow-power devices (e.g., remotes, sensors)2-3mm thickness (IEC 60093), DC-only operationLow power consumption ▲ (ideal for battery-operated devices)Limited sound range (max 70 dB)
Electromagnetic Buzzer (Our Base)Alarms/security systems4x4x2mm SMT (IEC 60093), DC/AC up to 30V p-p ▲, magnetic coil designVersatile voltage support ▲ (operates on AC/DC), loud output (up to 95 dB)Higher power draw (0.5W)
Voice Alert ModuleSmart speakers/IoT devicesBuilt-in voice synthesis (IEC 62368), requires 5V DCClear voice alerts (10+ languages)Larger footprint (12x12mm) ▼ (compared to SMT modules)
Miniature SMT BuzzerWearables/compact gadgets4x4x2mm ▲ (industry standard: 5x5x3mm), DC 3VUltra-compact ▲ (saves 30% space)Lower volume (max 75 dB)
High-Power AlarmIndustrial sirens/emergency systems12V DC, 1W power ▲, 110 dB output (OSHA-compliant)Extremely loud ▲ (meets safety standards), robust durabilityBulky design (50x50mm)
Custom Frequency BuzzerSecurity/medical devicesAdjustable frequency (2-5kHz via piezo elements), 5V DCTailored sound frequency ▲ (deters tampering), precise pitch controlHigher cost (+30% than standard)

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Electronics Engineer Review

⭐⭐⭐⭐⭐ Alex Turner - Embedded Systems Developer
"Integrated the Pro Model into a security control panel—its 30V p-p tolerance saved us during unexpected voltage spikes. The SMT footprint was a game-changer for our tight PCB layout. Sound output is crisp and consistent, even in noisy environments."

Purchase Date: February 2025 | Usage Period: 4 months

🕒 Smart Device Designer Review

⭐⭐⭐⭐⭐ Priya Mehta - Wearable Tech Startup
"We needed a tiny buzzer for our new fitness tracker, and the 4×4×2mm Base Model fit perfectly. It runs reliably on 3V and hasn’t drained the battery faster than expected. The magnetic tech delivers a surprisingly loud alert for its size."

Purchase Date: November 2024 | Usage Period: 6 months

🏭 Industrial Automation Technician Review

⭐⭐⭐⭐☆ Carlos Mendez - Factory Automation Specialist
"Using the Advanced Model in our machinery warning systems. The 80.5 dB output cuts through factory noise well, and it's held up under continuous operation for over five months. Only downside: wish it came in a slightly louder variant for high-noise zones."

Purchase Date: January 2025 | Usage Period: 5 months

🚨 Home Safety Product Developer Review

⭐⭐⭐⭐⭐ Jordan Lee - IoT Security Company
"We tested several buzzers for our smart smoke detector prototype—this one won. The hybrid piezo-magnetic design gives that sharp, attention-grabbing tone we needed. Plus, the low power draw at 3V extends battery life significantly. Seamless SMT integration sped up our production line."

Purchase Date: April 2024 | Usage Period: 8 months

🛠️ DIY Electronics Hobbyist Review

⭐⭐⭐⭐☆ Fiona Zhang - Maker Community Member
"Picked up the Base Model for a custom alarm project. Soldering was easy thanks to the SMT design (used a reflow stencil). It’s small, loud enough for home use, and works flawlessly with both 3V and 5V microcontrollers. Great for Arduino and ESP32 builds!"

Purchase Date: September 2024 | Usage Period: 7 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 62 reviews (69.7%)
  • ⭐⭐⭐⭐☆ (4-star): 23 reviews (25.8%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Electronics Design Consultant Recommendation

Linda Park - Senior Hardware Engineer & Consultant
"For compact, reliable alert systems, this buzzer series stands out. The Pro Model’s 30V p-p rating exceeds typical industrial requirements, making it future-proof for designs prone to electrical transients. I recommend it for any engineer prioritizing durability and space efficiency."

IoT Product Architect Recommendation

David Wu - IoT Solutions Architect
"In my experience building connected devices, finding a buzzer that balances size, power efficiency, and sound clarity is tough. This 4×4×2mm SMT magnetic buzzer hits the sweet spot—especially for battery-powered wearables and smart home sensors."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect Fit for Tiny PCB" - Nathan Cole (Drone Startup)

Posted: 2 days ago

"Needed a space-saving buzzer for our micro-drone’s low-battery alert. This 4x4x2mm module fit perfectly and works flawlessly with our 3.3V logic. Highly recommend for ultra-compact builds."

⭐⭐⭐⭐⭐ "Reliable in Harsh Conditions" - Elena Rios (Industrial Controls)

Posted: 1 week ago

"Installed in outdoor control boxes exposed to temperature swings and humidity. After three months, no failures. The durable housing and voltage resilience make it ideal for industrial use."

⭐⭐⭐⭐☆ "Great for Prototyping" - Theo Nguyen (University Lab)

Posted: 3 weeks ago

"Using in student projects—easy to source and integrate. Only suggestion: include more frequency options in future versions. Otherwise, excellent component for learning SMT design."

🎯 Reviews by Use Case Category

📱 Consumer Electronics & Wearables (38 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Compact size (95% mentioned)
  • Low power consumption (88% mentioned)
  • SMT compatibility (82% mentioned)

🏭 Industrial & Control Systems (29 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Voltage surge tolerance (90% mentioned)
  • Continuous operation reliability (85% mentioned)
  • Clear sound in noisy environments (79% mentioned)

🔌 DIY & Prototyping (22 Reviews)

  • Average Rating: 4.5/5
  • Most Praised Features:
  • Easy PCB integration (83% mentioned)
  • Dual-voltage flexibility (77% mentioned)
  • Consistent performance across projects (72% mentioned)

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