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Temperature Sensors - PTC Thermistors

Temperature Sensors - PTC Thermistors

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  2. Sensors, Transducers
  3. Temperature Sensors - PTC Thermistors
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Image Part Number Manufacturer Description Series Operating Temperature Packaging Mounting Type Current Accuracy Termination Package / Case Temperature Coefficient
B59421A0135A062 EPCOS THERMISTOR PTC 470 OHM 50% 0402 Automotive, AEC-Q200, B59421 -40°C ~ 125°C Original-Reel® Surface Mount - - - 0402 (1005 Metric) -
PRF21BE471QB5RA Murata Electronics THERMISTOR PTC 470 OHM 50% 0805 POSISTOR® PRF18/21 -20°C ~ 100°C Original-Reel® Surface Mount - - - 0805 (2012 Metric) -
P5010D090S401H Agastat Relays / TE Connectivity THERMISTOR PTC 40 OHM COIN - -40°C ~ 150°C Bulk Clamp On - - - Coin -
TFPT0805L3300FM Dale / Vishay THERMISTOR PTC 330 OHM 1% 0805 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - - 0805 (2125 Metric) -
B59970C0160A051 EPCOS THERMISTOR PTC DISC - -40°C ~ 125°C Tape & Reel (TR) Through Hole - - - Disc, 9.0mm Dia x 3.5mm W -
STS210101L360500U129 Cantherm THERMISTOR PTC 1.01K OHM 1% AXL - -40°C ~ 170°C Bulk Free Hanging - - - Axial -
TFPT0805L4700FV Dale / Vishay THERMISTOR PTC 470 OHM 1% 0805 TFPT -55°C ~ 125°C Cut Tape (CT) Surface Mount - - - 0805 (2125 Metric) -
5506-20-140-24-PTH Advanced Sensors / Amphenol THERMISTOR PTC 20 OHM 25% COIN - - Bulk Clamp On - - - Coin 14.0mm Dia x 1.5mm W -
2381 670 90003 Electro-Films (EFI) / Vishay THERMISTOR PTC 120 OHM RADIAL 2381 - Tape & Reel (TR) PCB, Through Hole - - - Radial -
TFPT1206L2201FM Dale / Vishay THERMISTOR PTC 2.2K OHM 1% 1206 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - - 1206 (3216 Metric) -

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.