MF112R505M4EP0CST0

Inrush Current Limiters (ICL) Overview

The MF112R505M4EP0CST0 is an NTC thermistor inrush current limiter manufactured by Songtian Electronics Co., Ltd. It features a nominal resistance of 2.5 Ohms at 25°C with a tolerance of ±20%. The device supports a maximum steady-state current of 5 A and operates within a temperature range of -40°C to 175°C. Its B constant (25°C/50°C) is specified as 2600K. The component has a diameter of 11.00mm (0.433 inches).

Inrush Current Limiters (ICL) Feature Summary

• Functions as an inrush current limiter to protect electronic circuits from high initial surge currents.
• Utilizes Negative Temperature Coefficient (NTC) characteristics for automatic resistance adjustment based on thermal state.
• Designed for robust operation across a wide industrial temperature range.

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Electronic ballast protection
• Motor drive circuitry

Inrush Current Limiters (ICL) Procurement Notes

Verify the manufacturer origin is China, specifically Guangdong province. Confirm the part status is active. Ensure the specific ordering suffix matches the required resistance and current ratings. Check that the package type aligns with assembly requirements. Validate the B constant value against design specifications.

Inrush Current Limiters (ICL) Selection Notes

Select this component when a 2.5 Ohm nominal resistance at 25°C is required for inrush limiting. Consider the 5 A steady-state current limit for load compatibility. Evaluate the 11.00mm diameter for board space constraints. Ensure the operating temperature range meets environmental demands.

Inrush Current Limiters (ICL) Part Context

This model belongs to the MF series of NTC thermistors produced by Songtian Electronics. The company specializes in ceramic capacitors, film capacitors, metal oxide varistors, and NTC sensors. This specific part is categorized under standard functional applications for current limiting.

Inrush Current Limiters (ICL) Replacement Considerations

MF1505006M4EP0CST0 is a related inrush current limiter from the same manufacturer but differs in resistance (5 Ohms) and current rating (6 A). Verify electrical compatibility before substitution.

Inrush Current Limiters (ICL) FAQ

What is the B constant for this thermistor?

The B constant (25°C/50°C) is 2600K.

What is the maximum steady-state current?

The maximum steady-state current is 5 A.