Temperature Sensors - PTC Thermistors

Temperature Sensors - PTC Thermistors

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Image Part Number Manufacturer Description Series Operating Temperature Packaging Mounting Type RoHS Status Manufacturer Part Number Package / Case Polarization Supplier Device Package
KTY82/121,235 NXP Semiconductors / Freescale THERMISTOR PTC 990 OHM TO236AB KTY82 -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - TO-236-3, SC-59, SOT-23-3 - TO-236AB (SOT23)
TFPT0805L1501FV Dale / Vishay THERMISTOR PTC 1.5K OHM 1% 0805 TFPT -55°C ~ 125°C Cut Tape (CT) Surface Mount - - 0805 (2125 Metric) - 0805
PTFT0805L1000JW Dale / Vishay THERMISTOR PTC 100 OHM 5% 0805 PTFT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805
TFPT1206L2201JV Dale / Vishay THERMISTOR PTC 2.2K OHM 5% 1206 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 1206 (3216 Metric) - 1206
TFPT1206L3800JV Dale / Vishay THERMISTOR PTC 380 OHM 5% 1206 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 1206 (3216 Metric) - 1206 (3216 Metric)
B59008C0080A040 EPCOS THERMISTOR PTC 250 OHM RADIAL - 90°C ~ 160°C Bulk PCB, Through Hole - - Radial - -
B59546A0135A020 EPCOS THERMISTOR PTC 20 OHM 20% DISC - 5°C ~ 80°C Tray Surface Mount - - Disc - -
TFPT1206L4701FM Dale / Vishay THERMISTOR PTC 4.7K OHM 1% 1206 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 1206 (3216 Metric) - 1206
PTCSC17T155DBE Electro-Films (EFI) / Vishay THERMISTOR PTC 5% RECTANGULAR - -20°C ~ 165°C - Clamp On - - Rectangular - -
B59850T1120A62 EPCOS THERMISTOR PTC 50 OHM 15% 4SMD - -20°C ~ 125°C Tape & Reel (TR) Surface Mount - - 4-SMD - 4-SMD

About Temperature Sensors - PTC Thermistors


Positive temperature coefficient (PTC) thermistors are temperature-sensitive resistors whose resistance increases significantly with temperature rise. PTC thermistors are typically made of ceramic materials doped with metal oxides and exhibit a nonlinear resistance-temperature characteristic. They find applications in overcurrent protection, motor starting, temperature sensing, and temperature compensation circuits. PTC thermistors offer self-regulating characteristics, where their resistance increases sharply when the operating temperature exceeds a certain threshold, limiting current flow and providing inherent overcurrent protection. PTC thermistors also find applications in temperature compensation circuits and inrush current limiters, where their resistance changes with temperature variations to control current flow and stabilize operating conditions.