Vishay Intertechnology has expanded its overcurrent protection portfolio with six new surface-mount polymer PTC thermistor series. Designed for computer, industrial, and consumer applications, these compact devices help reduce PCB space requirements while improving overall system efficiency.
The Vishay BCcomponents PPTC0603E3, PPTC0805E3, PPTC1206E3, PPTC1210E3, PPTC1812E3, and PPTC2920E3 series provide resettable overcurrent protection in low voltage circuits for computer USB-C ports; power over Ethernet (PoE) applications for computer peripherals and telecom equipment; battery-powered industrial tools and consumer devices and appliances; industrial automation systems; and home automation heating controls.
For these applications, the thermistors combine high holding current to 5.0 A with fast trip times down to 50 ms, while low resistance down to 5 mΩ reduces voltage drop and improves efficiency. To minimize board space requirements, the devices are offered in six compact case sizes from 0603 to 2920, with low heights ranging from 0.3 mm to 2 mm.
RoHS-compliant and halogen-free, the PPTC0603E3, PPTC0805E3, PPTC1206E3, PPTC1210E3, PPTC1812E3, and PPTC2920E3 series are compatible with lead (Pb)-free soldering processes up to
260 °C. SPICE and 3D models of the thermistors are available to support designers during development.
Device Specification Table:
| Part # | PPTC0603E3 | PPTC0805E3 | PPTC1206E3 | PPTC1210E3 | PPTC1812E3 | PPTC2920E3 |
| Case size | 0603 | 0805 | 1206 | 1210 | 1812 | 2920 |
| Ihold (A) | 0.02 to 0.5 | 0.05 to 0.75 | 0.05 to 1.1 | 0.05 to 1.5 | 0.14 to 2.6 | 0.5 to 5.0 |
| Itrip (A) | 0.06 to 1.0 | 0.15 to 1.5 | 0.15 to 2.2 | 0.15 to 3.0 | 0.34 to 5 | 1 to 10 |
| Vmax (VDC) | 6 to 60 | 6 to 30 | 8 to 60 | 6.0 to 90 | 8 to 60 | 15 to 60 |
| Imax (A) | 40 | 40 to 100 | 10 to 100 | 10 to 100 | 10 to 100 | 10 to 40 |
| PD typ. (W) | 0.5 | 0.5 to 0.6 | 0.6 to 0.8 | 0.6 to 1.5 | 0.8 to 1 | 1.5 to 2 |
| Max. trip time (s) | 0.08 to 1.0 | 0.10 to 1.5 | 0.1 to 1.5 | 0.1 to 1.5 | 0.15 to 2.5 | 0.30 to 20 |
| Rmin. (Ω) | 0.1 to 12 | 0.09 to 3.6 | 0.04 to 3.6 | 0.04 to 3.6 | 0.015 to 1.5 | 0.005 to 4.0 |
| R1 max. (Ω) | 0.68 to 70 | 0.35 to 20 | 0.21 to 20 | 0.11 to 50 | 0.047 to 6 | 0.025 to 1.4 |
Samples and production quantities of the new PTC thermistors are available now, with lead times of 12 weeks.
