About WANLAN

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Frequently Asked Questions

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We are a professional transformer manufacturer.

Wanlan’s manufacturing operations are bolstered by a team of highly experienced engineers and skilled machinists. Our facility is consistently upgraded with the latest, most advanced equipment, ensuring we deliver superior quality products with efficient turnaround times to our clientele.

We are dedicated in providing our customers with high quality products to meet their exact specifications.

Let Us Help You With Your Magnetic Needs

Transformers are essential in electronic projects, particularly in power supply systems like Switched Mode Power Supplies (SMPS). Customizing transformers is crucial for project success, as it allows for meeting the specific and varied demands of electronic systems. By tailoring transformers, engineers can ensure compatibility with application-specific needs, such as input/output voltage, power ratings, and physical constraints.

Precision customization enhances efficiency, minimizes energy losses, and increases the overall reliability of the electronic system. As a result, transformer customization becomes a vital factor in fine-tuning power supply parameters and optimizing performance, directly impacting the project's success.

We specialize in designing and manufacturing transformers, inductors, and coil components to meet your SMPS project requirements, adhering closely to your specifications and drawings. Common SMPS topologies for which we provide custom transformers include Off-Line converters (Flyback, Forward, Half-Bridge, etc.) and DC-DC converters.

High-frequency transformers, inductors, and various coils are custom-made and optimized according to customer specifications.

PQ Series Transformer: Maximum Power Density in a Minimum Volume
 
For engineers pushing the limits of power conversion, the PQ Series represents the pinnacle of magnetic design. The name &#8220;PQ&#8221; stands for Power Quality, and its unique rounded-center-pod design is engineered for one primary goal: to achieve the highest possible power density and efficiency in the smallest possible volume. By concentrating the magnetic field in the center and maximizing the core&#8217;s volume-to-surface-area ratio, the PQ core delivers unparalleled performance for the most space-constrained, high-power applications.
 
<img loading="lazy" decoding="async" class="wrap-left" src="https://react105.pinshop.com/wp-content/uploads/2025/11/High-FrequencyTransformers-PQ-series-scaled.jpg" alt="PQ Series" width="800" height="1086" data-src="https://react105.pinshop.com/wp-content/uploads/2025/11/High-FrequencyTransformers-PQ-series-scaled.jpg" />
 
Key Features &amp; Benefits
 
Unmatched Power Density: The PQ core&#8217;s unique shape provides the largest core cross-sectional area and window area for its overall volume. This allows it to handle more power in a smaller footprint than virtually any other core shape, making it ideal for applications where every cubic millimeter counts.
 
Superior Efficiency &amp; Low Core Loss: The continuous, symmetrical magnetic path minimizes flux crowding and core losses, especially at high frequencies. When combined with high-grade ferrite materials, the PQ core achieves exceptional efficiency, reducing energy waste and thermal stress.
 
Excellent Self-Shielding: The rounded, continuous core structure naturally contains the magnetic field, resulting in very low electromagnetic interference (EMI). This inherent shielding simplifies your EMC compliance process and protects sensitive nearby circuitry.
 
Optimized Thermal Performance: The large surface area relative to its volume allows for highly effective heat dissipation. This enables the PQ transformer to operate at high power levels with a lower temperature rise, directly translating to enhanced reliability and longevity.
 
Consistent &amp; Repeatable Performance: The symmetrical design and robust mechanical structure ensure stable electrical parameters and excellent performance consistency across all production batches, which is crucial for high-volume manufacturing.
 
 
Applications:
 
The PQ Series is the premium choice for compact, high-performance power conversion systems:
<ul>
<li style="line-height: 2">High-Density Switch-Mode Power Supplies (SMPS)</li>
<li style="line-height: 2">Telecommunications &amp; Networking Infrastructure</li>
<li style="line-height: 2">Server &amp; Data Center Power Supplies</li>
<li style="line-height: 2">Automotive Systems (Electric Vehicle On-Board Chargers, DC-DC Converters)</li>
<li style="line-height: 2">Renewable Energy Inverters &amp; Converters</li>
<li style="line-height: 2">High-End Audio Amplifiers</li>
<li style="line-height: 2">Aerospace &amp; Defense Power Systems</li>
</ul>
 
 
Technical Specifications:
<div style="line-height: 2">
<div style="line-height: 2">
<div> </div>
</div>
<table style="border-collapse: collapse;border-color: #000000;border-style: solid" border="1">
<thead>
<tr>
<th style="border-color: #000000">Parameter</th>
<th style="border-color: #000000">Details</th>
</tr>
</thead>
<tbody>
<tr>
<td style="border-color: #000000">Core Material</td>
<td style="border-color: #000000">Premium Low-Loss Ferrite (PC47, PC95, N97)</td>
</tr>
<tr>
<td style="border-color: #000000">Core Shape</td>
<td style="border-color: #000000">PQ (Power Quality)</td>
</tr>
<tr>
<td style="border-color: #000000">Key Advantage</td>
<td style="border-color: #000000">Maximum Power Density &amp; Superior Efficiency</td>
</tr>
<tr>
<td style="border-color: #000000">Power Range</td>
<td style="border-color: #000000">50W &#8211; 1000W+</td>
</tr>
<tr>
<td style="border-color: #000000">Frequency Range</td>
<td style="border-color: #000000">100kHz &#8211; 1MHz+</td>
</tr>
<tr>
<td style="border-color: #000000">Operating Temperature</td>
<td style="border-color: #000000">-40°C to +125°C, +150°C optional</td>
</tr>
<tr>
<td style="border-color: #000000">Isolation Voltage</td>
<td style="border-color: #000000">3000VAC &#8211; 6000VAC</td>
</tr>
<tr>
<td style="border-color: #000000">Standards Compliance</td>
<td style="border-color: #000000">ROHS, REACH, AEC-Q200 for automotive</td>
</tr>
<tr>
<td style="border-color: #000000">Customization</td>
<td style="border-color: #000000">Full Custom Windings, Special Bobbins, Vacuum Impregnation</td>
</tr>
</tbody>
</table>
 
Note: The PQ core is defined by its exceptional power-to-volume ratio. Contact us for specific PQ size details (e.g., PQ20, PQ26, PQ32, PQ35, PQ40) and custom design options.
 
 
PQ Series vs. Other Cores: The Density Advantage:
<div style="line-height: 2">
<div>
<div> </div>
</div>
<table style="border-collapse: collapse;border-color: #000000;border-style: solid" border="1">
<thead>
<tr>
<th style="border-color: #000000">Feature</th>
<th style="border-color: #000000">PQ Series</th>
<th style="border-color: #000000">ETD Series</th>
<th style="border-color: #000000">EE Series</th>
</tr>
</thead>
<tbody>
<tr>
<td style="border-color: #000000">Power Density</td>
<td style="border-color: #000000">Highest</td>
<td style="border-color: #000000">High</td>
<td style="border-color: #000000">Standard</td>
</tr>
<tr>
<td style="border-color: #000000">Core Volume Efficiency</td>
<td style="border-color: #000000">Optimized</td>
<td style="border-color: #000000">Good</td>
<td style="border-color: #000000">Fair</td>
</tr>
<tr>
<td style="border-color: #000000">Self-Shielding</td>
<td style="border-color: #000000">Excellent</td>
<td style="border-color: #000000">Good</td>
<td style="border-color: #000000">Good</td>
</tr>
<tr>
<td style="border-color: #000000">Typical Power Range</td>
<td style="border-color: #000000">Medium to High</td>
<td style="border-color: #000000">High to Very High</td>
<td style="border-color: #000000">Low to Medium</td>
</tr>
<tr>
<td style="border-color: #000000">Ideal For</td>
<td style="border-color: #000000">Space-Critical High-Performance Apps</td>
<td style="border-color: #000000">Raw Power Handling</td>
<td style="border-color: #000000">Cost-Effective General Purpose</td>
</tr>
</tbody>
</table>
</div>
 
Design Insight: Choose the PQ Series when your design is severely constrained by space but cannot compromise on power output or efficiency. It is the preferred core for achieving the highest watts per cubic centimeter.
 
 
 
Why Choose Our PQ Series Transformers?
 
Density-Optimized Design: We specialize in extracting the maximum performance from PQ cores, using advanced modeling and winding techniques to ensure you get the highest possible power density for your specific application.
 
High-Frequency Material Expertise: We pair PQ cores with state-of-the-art ferrite materials (like PC95) that are optimized for high-frequency, low-loss operation, ensuring peak efficiency in demanding switch-mode designs.
 
Automotive &amp; High-Reliability Focus: We offer PQ transformers qualified to AEC-Q200 standards, making them a reliable choice for the harsh environments of automotive and industrial applications.
 
Precision Manufacturing: Our manufacturing process ensures precise core gapping and consistent winding, which is critical for achieving predictable inductance and performance in every PQ transformer we produce.
 
 
 
Push the Boundaries of Your Power Design
 
<a href="https://wanlan-elec.com/contact">🚀 Request a High-Density PQ Sample for Evaluation</a>
</div>

High Frequency Transformer - PQ Series

High Frequency Transformer

Custom designs available
High efficiency of over 95%
High frequency range 20kHz-500Hz
High isolation strength
Lower profile and weight
High power density
High-temperature resistant
Operating temperature -40&deg;C to +125&deg;C
Power range 10W-10KW
Various types of transformers available：
EE/EF/EI/EP/EEL/EDR/EFD/EPC/ERL/ETD/PQ/RM/UU

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