Thermistors

A Thermistor is used in circuits for temperature measurement and current-limiting control. The resistance change of a thermistor depends on the ambient temperature. There are two semiconductor types, based on the temperature coefficient. Negative Temperature Coefficient (NTC) Thermistor: Resistance decreases as temperature rises, Applications in low-temperature measurements of temperature sensors, and inrush current suppression. Positive Temperature Coefficient (PTC) Thermistor: Resistance increases as temperature rises, Applications in overcurrent protection.
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Description Price Series Temperature Coefficient Type Thermal Coefficient Thermal Time Constant Resistance @ 25 °C Tolerance Application Package/Case Accuracy Maximum Power Rating Length Depth Height Dimensions
RS Stock No. 211-8030
Mfr. Part No.B57364S509M
BrandEPCOS
TWD115
Each
- NTC - 100s 5 Ω ±20% Soft Start Motor, Switching Power Supply - - 5100mW - 7mm - 21 (Dia.) x 7mm
RS Stock No. 742-8424
Mfr. Part No.NTCG104KF104F
BrandTDK
TWD11
Each (In a Pack of 10)
- NTC - - 100 kΩ ±1% Measurement, Protection 1005 - - 1mm 0.5mm 0.5mm 1 x 0.5 x 0.5mm
RS Stock No. 122-9832
Mfr. Part No.NCU18WB473F6SRB
BrandMurata
TWD9
Each (In a Bag of 20)
NCU NTC - - 47 kΩ - ABS Control Unit, Automotive, High Power Devices, Temperature Compensation, Various Engine Control Units 1608 - 100mW 1.6mm 0.8mm 0.8mm 1.6 x 0.8 x 0.8mm
RS Stock No. 538-0654
Mfr. Part No.NTCLE100E3103HB0
TWD33
Each (In a Pack of 5)
- NTC -4.38%/°C 15s 10 kΩ ±3% Compensation, Control, Measurement - ±0.75% - 3.3mm 3mm 9mm 3.3 x 3 x 9mm
RS Stock No. 706-2755
Mfr. Part No.B57703M502G40
BrandEPCOS
TWD145
Each
- NTC 4.4%/°C 50s 5 kΩ ±2% Measurement - ±1% 150mW 8.5mm 6.5mm 17.5mm 8.5 x 6.5 x 17.5mm
RS Stock No. 247-7339
Mfr. Part No.NTC0805J2K0
TWD18
Each (In a Pack of 10)
NTC0805 NTC - 4s 2 kΩ ±5% Compensation 0805 ±5% 125mW 2mm 1.25mm 0.5mm 2 x 1.25 x 0.5mm
RS Stock No. 538-0812
Mfr. Part No.NTCLE100E3104JB0
TWD21
Each (In a Pack of 5)
- NTC -4.57%/°C 15s 100 kΩ ±5% Compensation, Control, Measurement - ±1.5% - 3.3mm 3mm 9mm 3.3 x 3 x 9mm
RS Stock No. 211-8024
Mfr. Part No.B57364S259M
BrandEPCOS
TWD108
Each
- NTC - 100s 2.5 Ω ±20% Soft Start Motor, Switching Power Supply - - 5100mW - 7mm - 21 (Dia.) x 7mm
RS Stock No. 467-614
Mfr. Part No.B57235S509M
BrandEPCOS
TWD22
Each
- NTC - 60s 5 Ω ±20% Switching Power Supply - - 1800mW - 6mm - 9.5 (Dia.) x 6mm
RS Stock No. 754-6645
Mfr. Part No.238164063103
BrandVishay
TWD20
Each (In a Pack of 5)
- NTC - 15s 10 kΩ ±5% Sensing & Control, Temperature Compensation in Industrial & Consumer Electronics, Temperature Measurement - - 500mW 3.3mm 3mm 9mm 3.3 x 3 x 9mm
RS Stock No. 697-4610
Mfr. Part No.NB12K00103KBB
BrandAVX
TWD11
Each (In a Pack of 5)
NB12 NTC -4%/°C 5s 10 kΩ ±10% Protection 0805 ±3% - 2mm 1.25mm 1.3mm 2 x 1.25 x 1.3mm
RS Stock No. 786-9452
Mfr. Part No.NCP18WB473D03RB
BrandMurata
TWD9
Each (In a Pack of 25)
NCP NTC - - 47 kΩ ±0.5% Temperature Measurement 0603 - 100mW 1.6mm 0.8mm 0.8mm 1.6 x 0.8 x 0.8mm
RS Stock No. 496-2479
Mfr. Part No.B59115P1080A62
BrandEPCOS
TWD39
Each (In a Pack of 5)
- PTC - - 55 Ω ±25% Overcurrent Protection, Short Circuit Protection 3225 - - 8mm 6.3mm 3.3mm 8 x 6.3 x 3.3mm
RS Stock No. 216-1450
Mfr. Part No.B57237S509M
BrandEPCOS
TWD45
Each
- NTC - 90s 5 Ω ±20% Soft Start Motor, Switching Power Supply - - 3100mW - 7mm - 15 (Dia.) x 7mm
RS Stock No. 151-215
BrandRS Pro
TWD81
Each
- NTC - 10s 3 kΩ ±0.9% Compensation, Control, Measurement - - 75mW 63.5mm - - 2.4 (dia.)mm
RS Stock No. 247-7468
Mfr. Part No.NTC0805J33K
TWD21
Each (In a Pack of 10)
NTC0805 NTC - 4s 33 kΩ ±5% Compensation 0805 ±5% 125mW 2mm 1.25mm 0.5mm 2 x 1.25 x 0.5mm
RS Stock No. 106-195
Mfr. Part No.NCP15XQ102J03RC
BrandMurata
TWD2
Each (In a Bag of 25)
NCP NTC - - 1 kΩ ±5% Compensation, Sensing 0402 - 100mW 1mm 0.5mm 0.5mm 1 x 0.5 x 0.5mm
RS Stock No. 216-1438
Mfr. Part No.B57237S330M
BrandEPCOS
TWD31
Each
- NTC - 90s 33 Ω ±20% Soft Start Motor, Switching Power Supply - - 3100mW - 7mm - 15 (Dia.) x 7mm
RS Stock No. 769-1852
Mfr. Part No.B57211P0509M301
BrandEPCOS
TWD38
Each (In a Pack of 5)
- NTC - 70s 5 Ω ±20% Communication Equipment - - 3000mW - 6mm 20mm 13 (Dia.) x 6 x 20mm
RS Stock No. 769-1870
Mfr. Part No.B57211P250M301
BrandEPCOS
TWD46
Each (In a Pack of 5)
- NTC - 70s 25 Ω ±20% Communication Equipment - - 3000mW - 6mm 20mm 13 (Dia.) x 6 x 20mm