Description
Ametherm SG31 RTI Thermistor 220 Ohms 2A 25%, Inrush Current Limiters SURGE-GARD Current Limiters
RTI SG31 NTC THERMISTOR, Thermistor Type:NTC, Resistance:220ohm, Thermistor Tolerance:-25% to +25%, Thermistor Case Style:Radial Leaded, No. of Pins:2, RoHS
A thermistor is a type of resistor whose resistance is dependent on temperature, more so than in standard resistors. The word is a portmanteau of thermal and resistor. Thermistors are widely used as inrush current limiter, temperature sensors (NTC type typically), self-resetting overcurrent protectors, and self-regulating heating elements.
SG Series Inrush Current Limiting Thermistors
Surge currents which occur when electrical circuits are switched on can cause serious damage to sensitive electronic components which may exceed their rated values unless the surge is controlled. Damaging surges may be prevented by using Surge-Gard inrush current limiters.
High hot to cold resistance ratio
30 types of stocked Inrush Current Limiting (ICL) thermistor
The Surge Gard Inrush Current Limiting thermistor is a special power NTC thermistor which is connected in series with the load.
At “switch-on” the thermistor limits the current due to its relatively high cold resistance. As a result of current flow the thermistor self-heats, reducing it’s resistance value and thus limiting damaging surge currents to the load.
Manufacturer:Ametherm
Datasheet:Microchip/Thermistors-in-Single-Supply-Temperature-Sensing-Circuits.pdf
