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
PRF15BB102RB6RC Murata Electronics THERMISTOR PTC 1K OHM 50% 0402 Posistor® -40°C ~ 140°C Tape & Reel (TR) Surface Mount - - 0402 (1005 Metric) - 0402 (1005 Metric)
PTCLL05P251TTE Electro-Films (EFI) / Vishay THERMISTOR PTC 125 OHM RADIAL PTCLL -20°C ~ 105°C Tape & Reel (TR) Through Hole - - Disc, 5.4mm Dia x 4.5mm W - Radial Lead
TFPT0805L2200FZ Dale / Vishay THERMISTOR PTC 220 OHM 1% 0805 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805 (2012 Metric)
B59535T1120A262 EPCOS THERMISTOR PTC 35 OHM 20% 4SMD - -20°C ~ 125°C Tape & Reel (TR) Surface Mount - - 4-SMD - 4-SMD
TFPT1206L4700FV Dale / Vishay THERMISTOR PTC 470 OHM 1% 1206 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 1206 (3216 Metric) - 1206
PTCCL21H202DBE Electro-Films (EFI) / Vishay THERMISTOR PTC RADIAL LEAD DISC - -40°C ~ 85°C - Through Hole - - Disc, 20.5mm Dia x 4.0mm W - Radial Lead
TFPT0805L1200JY Dale / Vishay THERMISTOR PTC 120 OHM 5% 0805 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805 (2012 Metric)
PRF21BB471QB5RA Murata Electronics THERMISTOR PTC 470 OHM 50% 0805 POSISTOR® PRF18/21 -20°C ~ 130°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805
TFPT0805L3300KV Dale / Vishay THERMISTOR PTC 330 OHM 10% 0805 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805 (2012 Metric)
B59641A0125A062 EPCOS THERMISTOR PTC 470 OHM 50% 0603 Automotive, AEC-Q200, B59641 -40°C ~ 125°C Tape & Reel (TR) Surface Mount - - 0603 (1608 Metric) - 0603

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.