| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Packaging | Mounting Type | RoHS Status | Manufacturer Part Number | Package / Case | Polarization | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B59300M1145A70 | EPCOS | THERMISTOR PTC 300 OHM RADIAL | B59300 | 90°C ~ 160°C | Bulk | PCB, Through Hole | - | - | Radial | - | - | |
| TFPT0603L6800FV | Dale / Vishay | THERMISTOR PTC 680 OHM 1% 0603 | TFPT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | 0603 (1608 Metric) | - | 0603 | |
| KTY81/220,116 | NXP Semiconductors / Freescale | THERMISTOR PTC 2K OHM PBCYT2 | KTY81 | -55°C ~ 150°C | Tape & Reel (TR) | Through Hole | - | - | TO-226-2, TO-92-2 (TO-226AC) (Formed Leads) | - | PBCYT2 | |
| PTFL04BC471Q2N34B0 | Murata Electronics | THERMISTOR PTC 470 OHM DISC | Posistor® | -10°C ~ 40°C | Bulk | Through Hole | - | - | Disc, 5.0mm Dia x 4.0mm W | - | - | |
| PRF18BB471QS5RB | Murata Electronics | THERMISTOR PTC 470 OHM 50% 0603 | POSISTOR® PRF18/21 | -20°C ~ 140°C | Tape & Reel (TR) | Surface Mount | - | - | 0603 (1608 Metric) | - | 0603 (1608 Metric) | |
| PTFT0603L1000JW | Dale / Vishay | THERMISTOR PTC 100 OHM 5% 0603 | PTFT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | 0603 (1608 Metric) | - | 0603 | |
| TFPT0805L6800JM | Dale / Vishay | THERMISTOR PTC 680 OHM 5% 0805 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | 0805 (2012 Metric) | - | 0805 (2012 Metric) | |
| TFPT1206L8200JZ | Dale / Vishay | THERMISTOR PTC 820 OHM 5% 1206 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | 1206 (3216 Metric) | - | 1206 (3216 Metric) | |
| B59060A0000A010 | EPCOS | THERMISTOR PTC DISC | - | - | Tray | Surface Mount | - | - | Disc | - | - | |
| TFPT0805L1200FV | Dale / Vishay | THERMISTOR PTC 120 OHM 1% 0805 | TFPT | -55°C ~ 125°C | Cut Tape (CT) | Surface Mount | - | - | 0805 (2125 Metric) | - | 0805 |
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.