Product Introduction

VIP4‑2B‑10(10307) is a single‑phase two‑stage EMI power filter with 10A rated current and 115/250VAC rated voltage for 50/60Hz power supply. Built with dual‑stage filtering circuit topology, it achieves high insertion loss to suppress common‑mode and differential‑mode electromagnetic noise on AC power lines. It meets strict high‑pot and insulation requirements, with 2000VAC line‑to‑ground withstand voltage and insulation resistance above 100M ohm at 500VDC. Featuring a wide operating temperature range of ‑25℃ to +100℃ and solder terminal connection, this filter delivers stable and durable filtering performance. It effectively shields sensitive electronic circuits from power‑grid interference and helps end‑products satisfy EMC compliance standards.

Application Scope & Usage

This EMI power filter is mainly used to eliminate conducted electromagnetic interference on AC power input lines. It suppresses noise coming from the power grid and also prevents noise generated by equipment itself from feeding back to the mains. It is widely applied for industrial control cabinets, automation equipment, numerical‑control machinery, test and measuring instruments, communication devices, power supply units, medical auxiliary equipment and high‑end household electrical appliances. It is installed at the AC power input terminal of electronic devices to improve anti‑interference capability of whole systems and help finished products pass EMC certification tests.

FAQ

1. Q: What is the main function of an EMI power filter? A: The EMI power filter suppresses common‑mode and differential‑mode electromagnetic interference on AC power lines. It blocks noise from the power grid to protect internal sensitive circuits, and meanwhile stops noise generated by the equipment from polluting the public mains network, assisting products to meet EMC compliance requirements.
2. Q: How to select the correct current rating for EMI filter? A: The filter’s rated current shall be higher than the maximum continuous working current of your device. Do not choose a filter with lower current rating than equipment load current. Over‑current operation will cause overheating and shorten service life or even lead to filter damage.
3. Q: Why does leakage current exist for EMI power filter? A: Leakage current comes from the Y‑capacitor inside the filter connected between line and ground. Different voltage conditions bring different leakage current values. Users need to pay attention to ground connection reliability. For devices with strict leakage‑current limits, please check the datasheet parameter before selection.
4. Q: What will affect the actual filtering effect of the EMI filter? A: Filter performance is not only decided by itself. Installation methods, grounding condition, input and output wiring distance and surrounding wiring layout will heavily influence real‑world noise‑reduction result. Short grounding wire and separation between input and output cables are strongly recommended.
5. Q: Can EMI power filter work without ground connection? A: It can work for power transmission without ground connection, but the common‑mode noise suppression performance will drop sharply. The Y‑capacitor cannot take effect properly. For full filtering capacity and electrical safety, reliable ground connection is mandatory.