Self-Protecting PTC Thermistors

TDK Self-Protecting PTC Thermistors are suitable for smoothing capacitors in power supplies to prevent short-circuit damage. These self-protecting PTC thermistors are ideal for high pulse currents and a high number of operating cycles. Inrush current limiters are not damaged when directly connected to Vmax, even without additional current limitation. Applications for TDK Self-Protecting PTC Thermistors include inrush current limiters (charging resistors) for smoothing and DC link capacitors and for the replacement of high-power fixed resistors for capacitor charging.

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TDK PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 204-B 130-A 10 16X3,1 251In Stock
Min.: 1
Mult.: 1

B59204 100 Ohms 25 % - 40 C + 125 C Tray
TDK PTC (Positive Temperature Coefficient) Thermistors 560 V AC, AEC-Q200 AEC-Q200
Datasheet
7,444In Stock
Min.: 1
Mult.: 1

Surface Mount OverCurrent PTC 100 Ohms 25 % PCB Mount Radial - 40 C + 125 C AEC-Q200 Case
TDK PTC (Positive Temperature Coefficient) Thermistors 440 V AC, AEC-Q200 AEC-Q200
Datasheet
4,380In Stock
Min.: 1
Mult.: 1
Inrush Current Limiter Housing Type 56 Ohms 25 % PCB Mount Radial - 40 C + 125 C AEC-Q200 Case
TDK PTC (Positive Temperature Coefficient) Thermistors 440volts 120ohms ICL AEC-Q200
Datasheet
2,904In Stock
2,500Expected 24-08-2026
Min.: 1
Mult.: 1

Inrush Current Limiter SMD Type 120 Ohms 25 % PCB Mount Radial - 40 C + 125 C AEC-Q100 Cut Tape
TDK PTC (Positive Temperature Coefficient) Thermistors 440volts 56ohms ICL AEC-Q200
Datasheet
2,548In Stock
Min.: 1
Mult.: 1
: 500

B597x-Cx 56 Ohms 25 % PCB Mount Radial - 40 C + 125 C AEC-Q100 Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,50oHMS
Datasheet
2,474In Stock
3,000Expected 10-08-2026
Min.: 1
Mult.: 1
: 500

Telecom Pair Protection Over current in Housing style 50 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,120oHMS PTC Thermistor
Datasheet
3,446In Stock
1,500Expected 17-07-2026
Min.: 1
Mult.: 1

Telecom Pair Protection Over current in Housing style 120 Ohms 25 % PCB Mount Radial - 40 C + 125 C Cut Tape
TDK PTC (Positive Temperature Coefficient) Thermistors 560vAC,800vDC, 500 Ohms
Datasheet
2,272In Stock
Min.: 1
Mult.: 1
: 500

Inrush Current Limiter Leaded Disk Type 500 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 1000AC/DC,7.5KoHMS PTC Thermistor
Datasheet
1,066In Stock
7,500On Order
Min.: 1
Mult.: 1
: 500

Inrush Current Limiter Leaded Disk Type 7.5 kOhms 33 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,25oHMS
Datasheet
378In Stock
6,000On Order
Min.: 1
Mult.: 1
: 500

B597x-Cx 25 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 280AC,400DC,80oHMS PTC Thermistor
Datasheet
524In Stock
1,000Expected 24-06-2026
Min.: 1
Mult.: 1
: 500

Inrush Current Limiter Leaded Disk Type 80 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 260AC,370DC,70oHMS PTC Thermistor
Datasheet
1,013In Stock
Min.: 1
Mult.: 1
: 1,000

Inrush Current Limiter Leaded Disk Type 70 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,500oHMS PTC Thermistor
Datasheet
8In Stock
2,900On Order
Min.: 1
Mult.: 1
: 1,000

Inrush Current Limiter Leaded Disk Type 500 Ohms 25 % PCB Mount Radial - 40 C + 125 C Ammo Pack
TDK PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 201-B 140-A 10 16X3 Non-Stocked Lead-Time 14 Weeks
Min.: 1
Mult.: 1

B59201 20 Ohms 30 % - 40 C + 125 C Tray