The ISKRA KNB9008 is a high-reliability, metallized polypropylene film capacitor designed for AC line filtering and electromagnetic interference (EMI) suppression. Complying with the stringent international safety standard IEC 60384-14, this capacitor is certified for Class X2 applications, making it a safe and essential component for connecting directly across AC power lines.
It is commonly used to protect electronic equipment from noise on the mains supply and to prevent devices from emitting interference back into the power grid.
Key Features & Benefits
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Class X2 Safety Certification:Â Designed to fail safely (open circuit) without causing a fire or electric shock hazard. Ideal for applications where capacitor failure would not lead to a dangerous situation.
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Robust Construction:Â Features a flame-retardant, self-extinguishing plastic case (UL 94 V-0 rated) filled with a resilient epoxy resin, ensuring excellent moisture resistance and mechanical stability.
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High Reliability & Long Life:Â Manufactured with a metallized polypropylene film dielectric, offering stable capacitance, low dielectric losses, and high insulation resistance over a long operational lifespan.
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Excellent Self-Healing Property:Â The metallized construction allows the capacitor to automatically recover from minor dielectric breakdowns, maintaining functionality and enhancing durability.
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Low ESR & ESL:Â Provides effective high-frequency noise suppression, which is critical for modern switch-mode power supplies (SMPS).
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Radial Lead Design:Â Facilitates easy and straightforward PCB (Printed Circuit Board) mounting.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer / Series | ISKRA / KNB9008 |
| Ordering Code / Part No. | 2508521A |
| Capacitor Type | Film Capacitor, Class X2 |
| Dielectric | Metallized Polypropylene Film (MKP) |
| Rated Voltage | 250 V~ AC |
| Safety Standard | IEC 60384-14 |
| Climate Category | 40/110/56/B (Typically -40°C to +110°C) |
| Capacitance Tolerance | ±10% (K) is common for this series; verify datasheet. |
| Lead Spacing | 22.5 mm (Standard for this package) |
| Termination | Tinned copper leads |
| Case Material | Flame-retardant plastic (UL 94 V-0) |
| Encapsulation | Epoxy resin |
| Standards / Approvals | Compliant with EN 60384-14, UL 60384-14, CNE 60384-14 |
Applications
This capacitor is essential in a wide range of electronic and electrical equipment connected to AC mains, including:
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Switch-Mode Power Supplies (SMPS)Â for computers, TVs, and appliances
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LED Drivers and Lighting Systems
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Power Converters and Inverters
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Home Appliances (Washing machines, Refrigerators, Dishwashers)
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Industrial Controls and Motor Drives
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Battery Chargers
