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
TFPT0603L8200KV Dale / Vishay THERMISTOR PTC 820 OHM 10% 0603 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0603 (1608 Metric) - 0603 (1608 Metric)
KTY81/122,112 NXP Semiconductors / Freescale THERMISTOR PTC 1.01K OHM PBCYT2 KTY81 -55°C ~ 150°C Bulk Through Hole - - TO-226-2, TO-92-2 (TO-226AC) - PBCYT2
PTCSL03T111DB1E Electro-Films (EFI) / Vishay THERMISTOR PTC RADIAL LEAD DISC - -40°C ~ 165°C Bulk Through Hole - - Disc, 4.0mm Dia x 3.0mm W - Radial Lead
TFPT0805L3901JV Dale / Vishay THERMISTOR PTC 3.9K OHM 5% 0805 TFPT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 0805 (2125 Metric) - 0805
KT130 International Rectifier (Infineon Technologies) THERMISTOR PTC 1K OHM 3% SOT23-3 - -50°C ~ 150°C Tape & Reel (TR) Surface Mount - - TO-236-3, SC-59, SOT-23-3 - SOT-23-3
KTY23-7 International Rectifier (Infineon Technologies) THERMISTOR PTC 1.015K OHM SOT23 - -50°C ~ 150°C Tape & Reel (TR) Surface Mount - - TO-236-3, SC-59, SOT-23-3 - SOT-23-3
KTY21-5 International Rectifier (Infineon Technologies) THERMISTOR PTC 985 OHM 3% TO92 - -50°C ~ 150°C Bulk Through Hole - - TO-226-2, TO-92-2 (TO-226AC) - TO-92MINI
TFPT1206L1801KZ Dale / Vishay THERMISTOR PTC 1.8K OHM 10% 1206 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 1206 (3216 Metric) - 1206 (3216 Metric)
KTY23-6 International Rectifier (Infineon Technologies) THERMISTOR PTC 1K OHM 3% SOT23-3 - -50°C ~ 150°C Tape & Reel (TR) Surface Mount - - TO-236-3, SC-59, SOT-23-3 - SOT-23-3
PTCSGM3T141DBE Electro-Films (EFI) / Vishay THERMISTOR PTC 5% RADIAL - -20°C ~ 165°C - PCB, Through Hole - - Radial - -

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.