ST10001B

Overview

The ST10001B is a power thermistor manufactured by Littelfuse Inc., classified as an inrush current limiter (ICL). It features a nominal resistance of 10 Ohms with a tolerance of ±20%. The device supports a continuous current rating of 1 A and has a physical diameter of 0.430 inches (10.92mm). This component is designed to limit initial surge currents in electronic circuits.

Feature Summary

• Specially formulated NTC thermistor technology for inrush current limiting
• Designed for circuit protection against unsuitable current loads

Applications

• Power supply input stages
• Transformer protection
• Capacitive load switching

Procurement Notes

The ST10001B is listed as obsolete and is no longer manufactured by Littelfuse Inc. Procurement sources indicate the product is non-cancelable and non-returnable. Verify availability through authorized distributors or surplus suppliers, noting that new production is unavailable.

Selection Notes

Engineers should consider alternative inrush current limiters from the ST Series or other manufacturers due to the obsolescence of this specific part number. Ensure replacement components match the required 10 Ohm resistance and 1 A current handling capabilities while verifying package size compatibility.

Part Context

This component belongs to the ST Series of inrush current limiters produced by Littelfuse Inc. These devices are negative temperature coefficient (NTC) thermistors intended to protect electronic equipment from high initial charging currents during power-up phases.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the obsolete status, engineers must identify equivalent components based on electrical specifications such as resistance, current rating, and thermal characteristics.