| 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 | - | - |
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.