PTC (Positive Temperature Coefficient) Thermistors

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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 V_max, 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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Resistance	Tolerance	Mounting Style	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging
PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,50oHMS B59751C0120A070 TDK 1: HK$24.91 10,151In Stock	Mfr. Part No. B59751C0120A070 Mouser Part No 871-B59751C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,50oHMS Learn More about TDK epcos self protecting ptc thermistors	Datasheet	10,151In Stock	HK$24.91 HK$20.96 HK$18.58 HK$17.67 Reel HK$14.55 View HK$17.10 HK$15.78 HK$13.40 HK$12.82	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
PTC (Positive Temperature Coefficient) Thermistors 440 V AC, AEC-Q200 AEC-Q200 B59217J0130A020 TDK 1: HK$48.58 3,610In Stock	Mfr. Part No. B59217J0130A020 Mouser Part No 871-B59217J0130A020	TDK	PTC (Positive Temperature Coefficient) Thermistors 440 V AC, AEC-Q200 AEC-Q200 Learn More about TDK epcos b592 aec q200 thermistors	Datasheet	3,610In Stock	HK$48.58 HK$40.28 HK$36.41 HK$32.39 View HK$30.74 HK$28.44 HK$25.56 HK$23.59 HK$21.62	Min.: 1 Mult.: 1	Inrush Current Limiter Housing Type	56 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q200	Case
PTC (Positive Temperature Coefficient) Thermistors 560 V AC, AEC-Q200 AEC-Q200 B59219J0130A020 TDK 1: HK$41.18 5,969In Stock	Mfr. Part No. B59219J0130A020 Mouser Part No 871-B59219J0130A020	TDK	PTC (Positive Temperature Coefficient) Thermistors 560 V AC, AEC-Q200 AEC-Q200 Learn More about TDK epcos b592 aec q200 thermistors	Datasheet	5,969In Stock	HK$41.18 HK$35.26 HK$30.91 HK$28.69 View HK$26.14 HK$25.40 HK$21.62	Min.: 1 Mult.: 1	Surface Mount OverCurrent PTC	100 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q200	Case
PTC (Positive Temperature Coefficient) Thermistors 440volts 120ohms ICL AEC-Q200 B59412C1130B070 TDK 1: HK$23.67 2,860In Stock 4,000Expected 14/12/2026	Mfr. Part No. B59412C1130B070 Mouser Part No 871-B59412C1130B70	TDK	PTC (Positive Temperature Coefficient) Thermistors 440volts 120ohms ICL AEC-Q200 Learn More about TDK epcos self protecting ptc thermistors	Datasheet	2,860In Stock 4,000Expected 14/12/2026	HK$23.67 HK$21.04 HK$19.81 HK$17.59 View HK$16.69 HK$15.04 HK$13.89 HK$12.82	Min.: 1 Mult.: 1	Inrush Current Limiter SMD Type	120 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q100	Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 440volts 56ohms ICL AEC-Q200 B59451C1130B70 TDK 1: HK$23.67 1,168In Stock 1,500Expected 30/11/2027	Mfr. Part No. B59451C1130B70 Mouser Part No 871-B59451C1130B70	TDK	PTC (Positive Temperature Coefficient) Thermistors 440volts 56ohms ICL AEC-Q200 Learn More about TDK xev bms applications	Datasheet	1,168In Stock 1,500Expected 30/11/2027	HK$23.67 HK$21.87 HK$18.17 HK$16.77 Reel HK$15.54 View HK$15.54 HK$12.82	Min.: 1 Mult.: 1 : 500	B597x-Cx	56 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q100	Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,25oHMS B59750C120A70 TDK 1: HK$25.56 12,500On Order	Mfr. Part No. B59750C120A70 Mouser Part No 871-B59750C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,25oHMS Learn More about TDK epcos self protecting ptc thermistors	Datasheet	12,500On Order On Order Ship Dates Mfr. No: B59750C120A70 Stock: 0 On Order: 3,000 Expected 10/11/2026 9,500 Expected 13/11/2026 Factory Lead Time: 28 Weeks	HK$25.56 HK$21.87 HK$18.17 HK$16.77 Reel HK$14.47 View HK$15.95 HK$13.73 HK$13.07	Min.: 1 Mult.: 1 : 500	B597x-Cx	25 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors 560vAC,800vDC, 500 Ohms B59755C0115A070 TDK 1: HK$23.67 3,545In Stock	Mfr. Part No. B59755C0115A070 Mouser Part No 871-B59755C115A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 560vAC,800vDC, 500 Ohms Learn More about TDK epcos self protecting ptc thermistors	Datasheet	3,545In Stock	HK$23.67 HK$21.87 HK$18.17 HK$16.77 View HK$15.45 HK$13.32	Min.: 1 Mult.: 1	Inrush Current Limiter Leaded Disk Type	500 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors 1000AC/DC,7.5KoHMS PTC Thermistor B59758C0110A070 TDK 1: HK$23.34 4,369In Stock 10,000On Order	Mfr. Part No. B59758C0110A070 Mouser Part No 871-B59758C110A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 1000AC/DC,7.5KoHMS PTC Thermistor Learn More about TDK epcos self protecting ptc thermistors	Datasheet	4,369In Stock 10,000On Order On Order Ship Dates Mfr. No: B59758C0110A070 Stock: 4,369 Can Dispatch Immediately On Order: 500 Expected 2/11/2026 9,500 Expected 23/12/2026 Factory Lead Time: 36 Weeks	HK$23.34 HK$21.13 HK$18.82 HK$17.92 Reel HK$17.43 View HK$17.43 HK$16.44	Min.: 1 Mult.: 1 : 500	Inrush Current Limiter Leaded Disk Type	7.5 kOhms	33 %	PCB Mount	Radial	- 40 C	+ 125 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,500oHMS PTC Thermistor B59773C0120A070 TDK 1: HK$14.30 1,800In Stock 5,000Expected 23/11/2026	Mfr. Part No. B59773C0120A070 Mouser Part No 871-B59773C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,500oHMS PTC Thermistor Learn More about TDK epcos self protecting ptc thermistors	Datasheet	1,800In Stock 5,000Expected 23/11/2026	HK$14.30 HK$13.65 HK$12.82 HK$12.33 Reel HK$10.60 View HK$11.84 HK$11.01 HK$9.29	Min.: 1 Mult.: 1 : 1,000	Inrush Current Limiter Leaded Disk Type	500 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 204-B 130-A 10 16X3,1 B59204J130B10 TDK 1: HK$68.88 100In Stock 192Expected 2/11/2026	Mfr. Part No. B59204J130B10 Mouser Part No 871-B59204J130B10	TDK	PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 204-B 130-A 10 16X3,1 Learn More about TDK epcos self protecting ptc thermistors		100In Stock 192Expected 2/11/2026	HK$68.88 HK$62.23 HK$59.76 HK$56.80 View HK$54.75 HK$51.29 HK$48.83 HK$47.51	Min.: 1 Mult.: 1	B59204	100 Ohms	25 %			- 40 C	+ 125 C		Tray
PTC (Positive Temperature Coefficient) Thermistors 280AC,400DC,80oHMS PTC Thermistor B59752C0120A070 TDK 1: HK$19.97 772In Stock	Mfr. Part No. B59752C0120A070 Mouser Part No 871-B59752C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 280AC,400DC,80oHMS PTC Thermistor Learn More about TDK epcos self protecting ptc thermistors	Datasheet	772In Stock	HK$19.97 HK$19.07 HK$18.00 HK$17.26 View HK$16.60 HK$14.80 HK$14.30 HK$13.65	Min.: 1 Mult.: 1	Inrush Current Limiter Leaded Disk Type	80 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,120oHMS PTC Thermistor B59753C0120A070 TDK 1: HK$20.96 110In Stock 7,000On Order	Mfr. Part No. B59753C0120A070 Mouser Part No 871-B59753C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,120oHMS PTC Thermistor Learn More about TDK epcos self protecting ptc thermistors	Datasheet	110In Stock 7,000On Order On Order Ship Dates Mfr. No: B59753C0120A070 Stock: 110 Can Dispatch Immediately On Order: 3,500 Expected 31/5/2027 3,500 Expected 20/9/2027 Factory Lead Time: 36 Weeks	HK$20.96 HK$17.92 HK$16.85 HK$16.19 View HK$15.54 HK$14.47 HK$14.22 HK$13.81 HK$12.82	Min.: 1 Mult.: 1	Telecom Pair Protection Over current in Housing style	120 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 260AC,370DC,70oHMS PTC Thermistor B59770C0120A070 TDK 1: HK$14.30 917In Stock	Mfr. Part No. B59770C0120A070 Mouser Part No 871-B59770C120A70	TDK	PTC (Positive Temperature Coefficient) Thermistors 260AC,370DC,70oHMS PTC Thermistor Learn More about TDK epcos self protecting ptc thermistors	Datasheet	917In Stock	HK$14.30 HK$13.65 HK$12.82 HK$12.33 Reel HK$10.03 View HK$11.84 HK$10.69 HK$9.21	Min.: 1 Mult.: 1 : 1,000	Inrush Current Limiter Leaded Disk Type	70 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 201-B 140-A 10 16X3 B59201J140B10 TDK 192: HK$49.07 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. B59201J140B10 Mouser Part No 871-B59201J140B10	TDK	PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 201-B 140-A 10 16X3 Learn More about TDK epcos self protecting ptc thermistors		Non-Stocked Lead-Time 17 Weeks	HK$49.07 HK$43.40 HK$42.42	Min.: 192 Mult.: 192	B59201	20 Ohms	30 %			- 40 C	+ 125 C		Tray

Self-Protecting PTC Thermistors

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