Varistor 7D220K — Carbon Composition, 22V Tolerance Key features Type: Varistor — a passive surge protection component that limits voltage spikes and protects downstream components. Model: 7D220K — exact model identification for compatibility with designs that require this part number. Material: Carbon composition — durable construction for predictable suppression behavior. Tolerance: 22 V (resistance/voltage tolerance) — specified tolerance for the varistor’s operating parameter. Why this product matters Protects electronics from transient overvoltage events, reducing risk of component damage and unexpected failures. Simple, reliable surge suppression without active circuitry, making it easy to integrate into existing designs. Carbon composition offers stable, repeatable response under rated conditions. What it solves Absorbs and clamps sudden voltage spikes that can occur on power lines or signal paths. Extends the service life of sensitive components such as regulators, ICs, and power supplies. Provides a cost-effective layer of protection for single-point or distributed surge-suppression needs. Compatibility and performance notes Use when the 7D220K model and carbon-composition varistor behavior match your circuit requirements. Designed to perform consistently within the specified 22 V tolerance parameter; ensure system-level compatibility with this tolerance when selecting the part. Suitable for standard varistor applications where a reliable, passive suppression device is required. Typical applications Protecting power input stages of consumer electronics and appliances from line transients. Safeguarding PCB assemblies and control boards in industrial equipment from switching surges. Providing overvoltage protection for power supplies, chargers, and small motors. Practical considerations Confirm that the 7D220K model’s tolerance and carbon-composition characteristics align with your circuit’s voltage levels and surge-energy demands. Use the exact model number 7D220K when replacing or specifying parts to ensure proper fit and behavior. Reliable, model-specific protection for designs that require a carbon-composition varistor with a 22 V tolerance.