NTC thermistor devices are made of a specially formulated metal oxide ceramic material which is capable of suppressing high inrush current surges.

Inrush current limiter devices, being of relatively high resistance, shall limit the inrush current for 1~2 seconds during which time the device decreases in resistance substantially to a point where its voltage drop is negligible. The devices are specially useful for power suppliers because of the extremely low impedance of the capacitor being charged, of which the bridge is usually subjected to an exceedingly high current surge at turn-on point.

Diameter Model No. Resistance at 25℃
(Ω)
Thermal dissipation coefficient
(mW/℃)
Thermal Time constant
(S)
Imax
(A)
Maximum Capacitance AC240V
(uF)
Rated Temperature
TL~TU(℃)
20D 20S0R7M 0.7 ≥18 ≤220 13.0 1000 -40~+200
20S0R7L 0.7 13.0
20S1R0M 1 13.0
20S1R0L 1 13.0
20S1R3M 1.3 10.0
20S1R3L 1.3 10.0
20S1R5M 1.5 10.5
20S1R5L 1.5 10.5
20S2R0M 2 10.0
20S2R0L 2 10.0
20S2R2M 2.2 9.5
20S2R2L 2.2 9.5
20S2R5M 2.5 9.0
20S2R5L 2.5 9.0
20S030M 3 8.5
20S030L 3 8.5
20S040M 4 8.0
20S040L 4 8.0
20S4R7M 4.7 7.5
20S4R7L 4.7 7.5
20S050M 5 7.5
20S050L 5 7.5
20S060L 6 7.0
20S6R8L 6.8 6.5
20S070L 7 6.5
20S080L 8 6.0
20S100L 10.0 6.0
20S120L 12 5.0
20S130L 13 5.0
20S150L 15.0 4.5
20S160L 16.0 4.5
20S180L 18.0 4.0
20S200L 20.0 4.0
20S121L 120 2.0 1500