NTE03-021L

Inrush Current Limiters (ICL) Overview

The YAGEO NTE03-021L is a Negative Temperature Coefficient (NTC) thermistor designed for inrush current limiting applications. It features a nominal resistance of 21 Ohms with a tolerance of ±15% and supports a steady-state current of 3 Amperes. The component has a cylindrical body diameter of 5mm and utilizes leaded termination for through-hole mounting. It operates within a standard temperature range typical for industrial electronic components.

Inrush Current Limiters (ICL) Feature Summary

• Provides effective suppression of high inrush currents during power-up sequences to protect downstream circuitry.
• Features self-resetting capability, automatically returning to high-resistance state after cooling down from thermal events.
• Constructed with a robust ceramic element suitable for repeated thermal cycling in demanding environments.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Motor drive circuits
• Transformer protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific package variant, as datasheets may list both 5mm and 10mm body sizes for similar part numbers. Confirm that the 3A current rating aligns with your system's peak load requirements. Ensure the ±15% resistance tolerance meets your circuit design specifications before finalizing procurement orders.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a low-cost, resettable solution for inrush current control is required. Compare the 21 Ohm cold resistance against the expected operating voltage to ensure adequate impedance. Consider the physical size constraints of the PCB layout, as the 5mm diameter requires specific clearance compared to smaller surface-mount alternatives.

Inrush Current Limiters (ICL) Part Context

This part belongs to YAGEO’s NTC thermistor family, specifically engineered for inrush current limiting rather than temperature sensing. It complements other series like the NTE03-011M, which offers different resistance values for varying circuit loads while maintaining similar structural characteristics.

Inrush Current Limiters (ICL) Replacement Considerations

Direct substitutes include the NTE03-011M for lower resistance needs or other YAGEO NTC series with matching 3A ratings. Verify cross-compatibility with competitors' parts by checking I-V characteristics and maximum energy absorption capabilities.