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
TFPT0805L1801JM Dale / Vishay THERMISTOR PTC 1.8K OHM 5% 0805 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805 (2012 Metric)
KTY81/221,112 NXP Semiconductors / Freescale THERMISTOR PTC 1.98K OHM PBCYT2 KTY81 -55°C ~ 150°C Bulk Through Hole - - TO-226-2, TO-92-2 (TO-226AC) - PBCYT2
KTY83/151,113 NXP Semiconductors / Freescale THERMISTOR PTC 975 OHM DO34 KTY83 -55°C ~ 175°C Tape & Reel (TR) Through Hole - - DO-204AG, DO-34, Axial - DO-34
B59510T1120A62 EPCOS THERMISTOR PTC 10 OHM 20% 4SMD - -20°C ~ 125°C Tape & Reel (TR) Surface Mount - - 4-SMD - 4-SMD
TFPT0603L3300JV Dale / Vishay THERMISTOR PTC 330 OHM 5% 0603 TFPT -55°C ~ 150°C Tape & Reel (TR) Surface Mount - - 0603 (1608 Metric) - 0603 (1608 Metric)
PTFT0805L1500JV Dale / Vishay THERMISTOR PTC 150 OHM 5% 0805 PTFT -55°C ~ 125°C Tape & Reel (TR) Surface Mount - - 0805 (2012 Metric) - 0805
B59008C0140A040 EPCOS THERMISTOR PTC 250 OHM RADIAL - 90°C ~ 160°C Bulk 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.