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| Image | Part Number | Manufacturer | Description | Series | Operating Temperature | Packaging | Mounting Type | Current | Accuracy | Termination | Package / Case | Temperature Coefficient |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TFPT1206L2200FV | Dale / Vishay | THERMISTOR PTC 220 OHM 1% 1206 | TFPT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | - | 1206 (3216 Metric) | - | |
| KTY83/122,113 | NXP Semiconductors / Freescale | THERMISTOR PTC 1.01K OHM DO34 | KTY83 | -55°C ~ 175°C | Tape & Reel (TR) | Through Hole | - | - | - | DO-204AG, DO-34, Axial | - | |
| PTFT0805L4700JV | Texas Instruments | THERMISTOR PTC 470 OHM 5% 0805 | PTFT | -55°C ~ 125°C | Tape & Reel (TR) | Surface Mount | - | - | - | 0805 (2012 Metric) | - | |
| KTY82/120,215 | NXP Semiconductors / Freescale | THERMISTOR PTC 1K OHM TO236AB | KTY82 | -55°C ~ 150°C | Cut Tape (CT) | Surface Mount | - | - | - | TO-236-3, SC-59, SOT-23-3 | - | |
| PTCSSLVT131DBE | Texas Instruments | THERMISTOR PTC 100 OHM RADIAL | PTCSSLVT | - | - | PCB, Through Hole | - | - | - | Radial | - | |
| PTCCL21H591HBE | Texas Instruments | THERMISTOR PTC | - | - | - | - | - | - | - | - | - | |
| PTCCL21H421HBE | Texas Instruments | THERMISTOR PTC | - | - | - | - | - | - | - | - | - | |
| PTCCL21H202DBE | Texas Instruments | THERMISTOR PTC RADIAL LEAD DISC | - | -40°C ~ 85°C | - | Through Hole | - | - | - | Disc, 20.5mm Dia x 4.0mm W | - | |
| PTFM04BG222Q2N34B0 | Texas Instruments | THERMISTOR PTC 2.2K OHM BEAD | Posistor® | -10°C ~ 40°C | Bulk | Through Hole | - | - | - | Bead with Terminal | - | |
| PTCTL4MR250STE | Texas Instruments | THERMISTOR PTC 25 OHM 20% RADIAL | PTCTL | 0°C ~ 70°C | Tape & Reel (TR) | Through Hole | - | - | - | Disc, 8.5mm Dia x 4.0mm W | - |
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.