Product: Varistor, Carbon Composition Technology, Model 10D What it does Protects electronic circuits from short-duration voltage spikes and transients by clamping excess voltage and diverting surge energy away from sensitive components. Acts as a passive, automatic safeguard that engages only when line voltage exceeds normal operating levels. Key benefits Reliable transient suppression: Carbon composition construction provides effective energy absorption for common surge events. Simple integration: Model 10D is supplied in a compact, standard form factor suitable for many circuit protection applications. Cost-effective protection: Prevents component damage and reduces downtime without adding complex circuitry. Durable performance: Designed for repeated transient events typical in consumer and industrial environments. Important attributes Type: Varistor — intended for voltage surge suppression. Technology / Material: Carbon composition — the resistive element is based on carbon composition technology. Model: 10D — identifies this specific varistor form and specification for compatibility and replacement purposes. Function: Passive voltage clamping for transient and surge protection. Compatibility: Works with a broad range of electronic systems that require varistor-based surge protection; use the 10D model number to match replacement and design requirements. How it solves problems Prevents single-event overvoltage damage that can destroy semiconductors, ICs, and power supplies. Reduces false failures and maintenance costs by absorbing spikes from switching, inductive loads, or external transient events. Protects downstream circuitry without requiring active monitoring or control. Practical use scenarios Power supply boards: Install a 10D varistor across AC or DC input lines to clamp incoming spikes and protect regulators and converters. Consumer electronics: Use in TVs, audio equipment, and set-top boxes to guard sensitive circuitry against lightning-induced surges and switching transients. Industrial control and motor drives: Place on control boards or across relay and solenoid lines to absorb inductive kickback and transient overvoltages. Installation and selection tips Match the 10D model to your circuit by checking the device’s rated voltage and energy-handling specifications from the supplier or datasheet before final selection. Install the varistor close to the point of entry for the transient (input terminals or connector) for the best protection. Replace varistors that show visible damage or have been subjected to a large surge event, as their protective performance can degrade after significant stress. Why choose this model The 10D varistor in carbon composition offers a straightforward, proven method to add transient protection to designs and repairs. Use the model number to ensure compatibility when specifying or replacing surge protection components.