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The B57153S0200M051 is an NTC thermistor designed for inrush current limiting, manufactured by EPCOS (TDK). It features a nominal resistance of 20 Ohms with a tolerance of ±20%. The component has a current rating of 1.6 A and supports voltage ratings of 110 VAC and 230 VAC. Physical dimensions include a diameter of 8.5 mm and a width of 6 mm, with a lead spacing of 5 mm. It operates within a temperature range of -55°C to +170°C and has a power rating of 1.4 W.
Verify the manufacturer marking matches EPCOS or TDK branding on the component body. Confirm the part number suffix M051 corresponds to the specific reel packaging and lead configuration. Ensure the resistance value aligns with circuit design requirements before integration.
Select this component when designing circuits requiring robust inrush current protection for AC mains voltages up to 230 VAC. Consider the 1.6 A current rating and 20 Ohm initial resistance to ensure compatibility with downstream load requirements and thermal management constraints.
This part belongs to the B57153 series of NTC thermistors specifically engineered for inrush current limiting. It represents a standard solution for protecting sensitive electronic components from high startup currents in various industrial and consumer applications.
Compatible substitutes include other EPCOS TDK NTC inrush limiters with similar electrical parameters such as the B57153S0479M051, provided resistance and current ratings match the application needs.