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| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Packaging | Mounting Type | Current | Accuracy | Termination | Package / Case | Temperature Coefficient |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KTY81/110,116 | NXP Semiconductors / Freescale | THERMISTOR PTC 1K OHM PBCYT2 | KTY81 | -55°C ~ 150°C | Tape & Reel (TR) | Through Hole | - | - | - | TO-226-2, TO-92-2 (TO-226AC) (Formed Leads) | - | |
| TFPT0603L2200FZ | Dale / Vishay | THERMISTOR PTC 220 OHM 1% 0603 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | - | 0603 (1608 Metric) | - | |
| B59060A0220A010 | EPCOS | THERMISTOR PTC 9 OHM 30% DISC | - | -40°C ~ 200°C | Tray | Surface Mount | - | - | - | Disc | - | |
| TFPT1206L4700FM | Dale / Vishay | THERMISTOR PTC 470 OHM 1% 1206 | TFPT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | - | 1206 (3216 Metric) | - | |
| KTY81/120,112 | NXP Semiconductors / Freescale | THERMISTOR PTC 1K OHM PBCYT2 | KTY81 | -55°C ~ 150°C | Bulk | Through Hole | - | - | - | TO-226-2, TO-92-2 (TO-226AC) | - | |
| B59875C0120A570 | EPCOS | THERMISTOR PTC 65 OHM 25% RADIAL | - | -40°C ~ 125°C | Bulk | Through Hole | - | - | - | Disc | - | |
| TFPT1206L5601KM | Dale / Vishay | THERMISTOR PTC 5.6K OHM 10% 1206 | TFPT | -55°C ~ 150°C | Tape & Reel (TR) | Surface Mount | - | - | - | 1206 (3216 Metric) | - | |
| B59891C0135A070 | EPCOS | THERMISTOR PTC 150 OHM 25% DISC | - | -40°C ~ 125°C | Bulk | Through Hole | - | - | - | Disc, 4.0mm Dia x 5.0mm W | - | |
| B59008C0070A040 | EPCOS | THERMISTOR PTC 250 OHM RADIAL | - | 90°C ~ 160°C | Bulk | PCB, Through Hole | - | - | - | Radial | - | |
| B59701A0070A062 | EPCOS | THERMISTOR PTC 680 OHM 50% 0805 | B59701 | -40°C ~ 125°C | Tape & Reel (TR) | Non-Standard, Leadless | - | - | - | 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.