Ametherm SL05 30001

The SL05 30001 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 0.25A (up to +65°C), resistance of 30Ω ±5% (at 25°C) and a maximum recommended energy rating of 3J. The Ametherm SL series suppresses surge currents that occur when electrical circuits are switched on, preventing serious damage to sensitive electronic components if their rated current values are exceeded. Connected in series with the load, at “switch-on” they limit the current due to its relatively high cold resistance. As a result of current flow, the thermistor self-heats and in turn reducing its resistance value so that once the initial surge current has been safely held off, the resistance in the thermistor is maintained at a low value to maximise efficiency

• Inrush current limiting thermistor
• Resistance of 30Ω (at 25°C)
• Maximum steady state current of 0.25A (up to +65°C)
• Maximum recommended energy of 3J
• Tolerance ±5%
• Dissipation constant of 4mW/°C
• Thermal time constant of 20s

Typical applications for the SL series include:

• Limit current inrush to PSUs and battery chargers
• Lighting circuits and thermostat protection
• Electric motor soft start

The below table gives the full specifications of the Ametherm SL05 30001