| 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 | - | - |
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.