Thorough product design and quality verification

UNIFIVE enhances the prevention of malfunctions and extends the lifespan of AC/DC Power Adapters — Desktop & Wall-Mount and switching power supply Products by establishing a comprehensive testing system, thereby providing high quality and safety. Below, we introduce part of our key design and quality verification points.

Finished Product Inspection

Exterior and Cable Physical Tests: Ensuring Durability and Safety

• Drop Test
  Verifies if the product can withstand handling and impact during transportation on site. Measures are evaluated to prevent damage to the power supply casing and wiring.
• Sharp Edge Drop Test
  Conducted to ensure safety against edges and protrusions on the product, minimizing risks of injury or breakage.
• Cable Pull and Plug In/Out Tests
  Repeated tests for a fixed time and number of times are performed to verify wiring durability and prevent connector wear or contact failure, ensuring long-term reliability.
• Ball Pressure Test
  Examines the softening temperature of exterior resin, ensuring shape retention and safety from normal to high-temperature environments.

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Durability of casings and wiring directly affects trouble-free field operation. We cover a wide range of physical tests to achieve both stable operation and safety.

Chemical Tests: Balancing Environmental Impact and Product Resistance

• Salt Spray Test
  Checks rust-resistance and corrosion resistance of metal parts, preventing performance degradation due to corrosion. Applicable to use in overseas or coastal environments.
• Humidity Test
  Verifies normal operation of the product even in high humidity. Detects defects caused by moisture penetration into circuit boards or components.
• RoHS Inspection
  Checks compliance with regulations such as the European RoHS directive to ensure environmentally responsible product manufacturing.

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Environmentally friendly design choices and durable material selection are made from the design stage, ensuring quality that meets international standards.

Reliability Testing: Commitment to Long-Term Stable Operation

• Operation Test
  Verifies stability during continuous operation and under abnormal loads, laying the foundation for long-life design.
• Vibration and Thermal Shock Tests
  Confirms that the product maintains performance under severe vibration and temperature fluctuations, including during transport or rapid temperature changes.
• Aging Test
  Identifies time-dependent changes and potential failures after prolonged continuous use early on. Pursues a design resistant to component degradation.
• Insulation Resistance and Withstand Voltage Tests
  Strictly checks insulation performance—core of power safety—to prevent short circuits or leakage, ensuring safety and reliability.
• Blanket Wrapping Test
  Wraps the product in a blanket and applies rated load to check for smoke generation, fire risk, or casing deformation. Ensures safety under overheating conditions.

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We conduct multilayered tests simulating real usage conditions to guarantee long-term stability, while preparing for overheating risks to reduce failure rates and improve safety.

EMC Testing: Noise Control and Compliance with Safety Standards

• Electrostatic Discharge (EFT), Surge (Lightning), and DIP Tests
  Verifies resistance against external static discharge and lightning surges, preventing malfunction or breakdown of control systems.
• Noise Immunity Test (High-Frequency Noise Test)
  Minimizes impact on peripheral devices and ensures not only our product's quality but also the safety of surrounding circuits.

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Power noise issues can lead to corporate losses or complaints. We cover various EMC tests to provide safe and reliable power supplies in compliance with international standards.

Mechanical Testing: Comprehensive Evaluation of Impact Resistance and Usability

• Single-Axis and Composite Vibration Tests
  Assumes various vibration conditions during use and shipping, preventing adverse effects on mounted boards or internal wiring.
• Case Property and AC PIN Press-In Tests
  Checks strength of power plug fixation and case deformation resistance to deliver a user-friendly and durable housing design.
• External Force, Fall Image, and Standalone Drop Tests
  Quantitatively evaluates damage caused by external impact on the product, enhancing strength and safety.

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Mechanical robustness and ease of use directly connect to productivity. We comprehensively test to ensure reliable handling, targeting “durable and long-lasting power supplies.”

Environmental Testing: Adaptation to Severe Conditions like Temperature and Humidity

• Thermal Shock, High-Temperature Operation, and Low-Temperature Operation Tests
  Demonstrates performance maintenance under extremely hot or cold conditions. Supports special applications such as use in freezers or hot environments.
• High-Temperature, High-Humidity Storage Test
  Ensures quality and performance even after long-term storage in specific locations.

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By comprehensively testing resistance to temperature and humidity assuming diverse environments, we ensure safety and peace of mind in all situations.

Component Inspection

Verification at the Component Level: PCB / MOSFET / Diode / Transformer / Wiring / Casing / Electrolytic Capacitor

We conduct not only finished product testing but also rigorous quality verification at the component level.

• PCB: Manages board quality through thermal expansion tests, measurement tests, RoHS inspection, etc.
• MOSFET: Ensures stable drive of high-speed switching components via EMI tests, statutory inspections, heat generation measurements, etc.
• Diode: Enhances reliability of key rectification circuits via EMI tests, destruction tests, rectification capability measurements, etc.
• Transformer: Optimizes core component characteristics via DCR measurement, winding resistance evaluation, temperature rise tests, etc.
• Wiring: Tests mechanical, chemical, and electrical properties of cables via bending tests, combustion tests, pull tests, salt spray, disassembly inspection (soldered parts), contact resistance checks, etc.
• Casing: Confirms compliance with safety standards through combustion tests, insulation tests, ball pressure tests, iron ball drop tests, etc.
• Electrolytic Capacitor: Improves component lifespan with withstand voltage rise tests, capacitance change tests, lifespan evaluation, capacitance loss measurement, terminal pull tests, DC drop resistance measurement, etc.

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Based on the belief that “quality begins with components,” we carry out strict testing down to finer details. We ensure thorough quality control of each component to minimize defects and failures.

Summary: Advantages of Our Comprehensive Testing

1. High Product Reliability
   We provide power supplies that operate stably in diverse environments such as drops, vibrations, and high temperature/humidity.
2. Safety and Compliance with International Standards
   We support smooth certification acquisition during market launch by complying with international standards such as EMC and RoHS.
3. Longer Lifespan and Cost Reduction
   Reduces failures and error rates, lowering maintenance and replacement costs to minimize total life cycle cost.
4. Preventative Troubleshooting
   Simulates and tests areas prone to issues in advance, solving design-stage problems to ensure stable supply of products.

We thoroughly test all critical elements affecting power supply quality, conforming to international standards. We hope you will consider our power supplies as a partner to accelerate product development and reduce defect risks.