| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Package / Case | Polarization | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B59525T1120A62 | EPCOS | THERMISTOR PTC 25 OHM 20% 4SMD | - | -20°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | 4-SMD | - | 4-SMD | |
| TFPT0603L2700JM | Dale / Vishay | THERMISTOR PTC 270 OHM 5% 0603 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | 0603 (1608 Metric) | - | 0603 (1608 Metric) | |
| PTCSGM3T111DBE | Electro-Films (EFI) / Vishay | THERMISTOR PTC 5% RADIAL | - | -20°C ~ 165°C | - | PCB, Through Hole | - | - | Radial | - | - | |
| B59300M1060A70 | EPCOS | THERMISTOR PTC 300 OHM RADIAL | B59300 | 90°C ~ 160°C | Bulk | PCB, Through Hole | - | - | Radial | - | - | |
| B59875T1120A62 | EPCOS | THERMISTOR PTC 75 OHM 20% 4SMD | - | -20°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | 4-SMD | - | 4-SMD | |
| B59536A0135A020 | EPCOS | THERMISTOR PTC DISC | - | - | Tray | Holder | - | - | Disc | - | - | |
| B59835T1120A062 | EPCOS | THERMISTOR PTC 35 OHM 15% 4SMD | - | -20°C ~ 125°C | Cut Tape (CT) | Surface Mount | - | - | 4-SMD | - | 4-SMD | |
| PTFT1206L6800JW | Dale / Vishay | THERMISTOR PTC 680 OHM 5% 1206 | PTFT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | 1206 (3216 Metric) | - | 1206 | |
| TFPT1206L8201KZ | Dale / Vishay | THERMISTOR PTC 8.2K OHM 10% 1206 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | 1206 (3216 Metric) | - | 1206 (3216 Metric) | |
| TFPT0805L6801FZ | Dale / Vishay | THERMISTOR PTC 6.8K OHM 1% 0805 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | 0805 (2012 Metric) | - | 0805 (2012 Metric) |
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.