Power Thermistors

A Power Thermistor, also called Power NTC or inrush current limiter, is an electronical component which suppresses inrush currents of electric circuits.
Switching power supplies, AC motors, and lighting ballasts can induce an inrush current of more than 100 times the nominal current when the circuit is switched on.
The Power Thermistor heats up when an inrush current passes through it.
The heat up causes a dramatic decrease in resistance and protects electric equipment from being damaged.

There are 10 of 69 products shown.

5D2-05

  • Disc diameter [mm]: 8.5 mm
  • R25 [Ω]: 5 Ω
  • B25/85 [K]: 2,650 K
  • I max. [A]: 2 A
  • Rresidual [Ω]: 0.48 Ω
  • Thermal time constant [s]: 20 s
  • Dissipation factor [mW/°C]: 15 mW/°C
  • Toperating [°C]: -50~150
  • Manufacturer: Semitec
5D2-05

20D2-05

  • Disc diameter [mm]: 8.5 mm
  • R25 [Ω]: 20 Ω
  • B25/85 [K]: 2,800 K
  • I max. [A]: 0.3 A
  • Rresidual [Ω]: 1.66 Ω
  • Thermal time constant [s]: 20 s
  • Dissipation factor [mW/°C]: 1 mW/°C
  • Toperating [°C]: -50~150
  • Manufacturer: Semitec
20D2-05

10D2-05

  • Disc diameter [mm]: 8.5 mm
  • R25 [Ω]: 10 Ω
  • B25/85 [K]: 2,700 K
  • I max. [A]: 1 A
  • Rresidual [Ω]: 0.91 Ω
  • Thermal time constant [s]: 20 s
  • Dissipation factor [mW/°C]: 7 mW/°C
  • Toperating [°C]: -50~150
  • Manufacturer: Semitec
10D2-05

8D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 8 Ω
  • B25/85 [K]: 2,800 K
  • I max. [A]: 2 A
  • Rresidual [Ω]: 0.58 Ω
  • Thermal time constant [s]: 41 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
8D2-07

5D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 5 Ω
  • B25/85 [K]: 2,800 K
  • I max. [A]: 3 A
  • Rresidual [Ω]: 0.36 Ω
  • Thermal time constant [s]: 35 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
5D2-07

22D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 22 Ω
  • B25/85 [K]: 2,900 K
  • I max. [A]: 1 A
  • Rresidual [Ω]: 1.43 Ω
  • Thermal time constant [s]: 50 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
22D2-07

16D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 16 Ω
  • B25/85 [K]: 2,900 K
  • I max. [A]: 2 A
  • Rresidual [Ω]: 1.04 Ω
  • Thermal time constant [s]: 45 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
16D2-07

12D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 12 Ω
  • B25/85 [K]: 2,900 K
  • I max. [A]: 1.7 A
  • Rresidual [Ω]: 0.78 Ω
  • Thermal time constant [s]: 41 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
12D2-07

10D2-07

  • Disc diameter [mm]: 11 mm
  • R25 [Ω]: 10 Ω
  • B25/85 [K]: 2,800 K
  • I max. [A]: 2 A
  • Rresidual [Ω]: 0.72 Ω
  • Thermal time constant [s]: 45 s
  • Dissipation factor [mW/°C]: 30 mW/°C
  • Toperating [°C]: -40~160
  • Manufacturer: Semitec
10D2-07

5D2-08

  • Disc diameter [mm]: 10 mm
  • R25 [Ω]: 5 Ω
  • B25/85 [K]: 2,700 K
  • I max. [A]: 3 A
  • Rresidual [Ω]: 0.35 Ω
  • Thermal time constant [s]: 35 s
  • Dissipation factor [mW/°C]: 22 mW/°C
  • Toperating [°C]: -50~170
  • Manufacturer: Semitec
5D2-08
Disc diameter [mm]

R25 [Ω]

B25/85 [K]

I max. [A]

Rresidual [Ω]

Thermal time constant [s]

Dissipation factor [mW/°C]

Toperating [°C]

C [µF]

E [J]

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