News
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Case Study – Helping a 65W PD Charger Pass Safety & EMC Testing
The Challenge A charger manufacturer encountered repeated EMC noise issues while developing a 65W PD adapter. To reduce high-frequency common-mode noise, the engineering team increased the Y capacitor from 1,000pF (102) to 2,200pF (222). However, the output ripple did not improve. Worse, t...Read more -
Case Study – Helping a Client Prevent Surge Failure
A client experienced repeated failures during surge testing of high-voltage equipment. JEC Analysis Failure analysis showed that the ceramic capacitors had insufficient voltage margin. Although they passed conventional voltage tests, repeated surge pulses could exceed the dielectric streng...Read more -
Why Are Ceramic Capacitors a Better Fit for HF Designs
For hardware engineers, power supply designers, and electronic component purchasing teams, capacitor selection becomes more critical as switching frequencies move from hundreds of kHz toward the MHz range. A capacitor that works well at low frequency may not perform as expected at high fre...Read more -
Y Capacitor Selection Matters in PV Inverters
For hardware engineers, power supply designers, and electronic component purchasing teams, Y capacitors may be small components, but they can have a major impact on EMC performance, electrical safety, and overall inverter reliability. In PV inverters, common-mode noise can occur on both th...Read more -
Helping a Client Solve Instant Power-On Failures
A customer developing switching power supplies and power electronics equipment faced a recurring failure: the auxiliary power IC U2 would fail immediately when the equipment was powered on. Even though the surrounding components tested normally, the IC could not withstand the initial power...Read more -
Silver or Copper MOV? The Right Choice Depends on Your Application
Rising material costs and longer lead times are putting more pressure on both R&D and purchasing teams. For MOV (Metal Oxide Varistor) selection, simply choosing the lower-cost option is not enough. The key question is: Can it deliver the required surge protection under your ac...Read more -
HighVolt Capacitor Selection – Specs Alone Aren’t Enough
For engineers designing PV inverters, EV chargers, energy storage systems, and industrial power supplies, choosing a capacitor based only on datasheet parameters can lead to unexpected failures. A low-ESL ceramic capacitor may look ideal for high-frequency applications, but it may not be s...Read more -
Why NTC Selection Matters in Power Electronics
For power supply, industrial control, appliance, and EV engineers, NTC thermistors may be a low-cost component, but removing them to reduce BOM cost can create much higher failure risks. Why Power Supply Design Requires NTC Thermistors? Without proper NTC thermistor protection, inrush cur...Read more -
Y Capacitors Key Trends Shaping EMI & Safety Design
As power electronics continue to move toward higher power density, higher switching frequencies, and more compact designs, Y capacitors are facing increasingly demanding requirements. So, what are the key trends engineers should pay attention to? 1. Smaller Size, Higher Capacitance Power s...Read more -
Y Capacitor Selection – Key Points Engineers Should Know
Y capacitors are essential for both EMI suppression and electrical safety. But choosing the right one requires more than simply matching the capacitance value. Here are 5 key factors to consider: Safety Certification Always choose certified Y capacitors with high insulation resistance. For...Read more -
Helping Client Resolve Surge Protection Failure
A customer selected a 471KD14 MOV for their power module design, which theoretically met the requirement for a 2KV common-mode surge test. However, during actual testing, the power module repeatedly failed after only 5–10 surge pulses, indicating that the MOV was not providing effective pr...Read more -
How Electrolytic Capacitors Support ESS Systems
Electrolytic capacitors play an important role in energy storage systems, pulse power supplies, laser equipment, and industrial electronics. In energy storage systems, electrolytic capacitors help stabilize voltage by storing excess energy and releasing it when needed. This is especially v...Read more