Passives

PTC thermistors offer accurate remote overtemperature sensing

16th July 2015
Barney Scott
0

Vishay Intertechnology has introduced a series of mini radial-leaded Positive Temperature Coefficient (PTC) sensing thermistors. Featuring body diameters of under 4.0mm, a wide range of well-defined temperature levels from +80 to +150°C, and standard ±5°C tolerances, devices in the Vishay BCcomponents PTCSL03 series are designed to provide compact and accurate remote over-temperature sensing.

The devices provide excellent long-term behavior of ΔT equal to or less than 1°C after 1,000 hours for reliable over-temperature protection and control in power supplies, power inverters, motor drives, lighting drivers, smart fuse boxes, and pump motors in alternative energy, industrial, and consumer applications. The sensors feature maximum R25 of 120Ω, maximum voltage of 30V, a dissipation factor of 5mW/K, and a fast thermal time constant of 6s.

PTCSL03 series devices consist of a medium-resistivity doped barium titanate ceramic chip with copper-clad steel wire leads. Providing a rugged, durable construction, the sensors feature a high-temperature silicone coating and are also available as bare pellets upon request.

The RoHS-compliant devices are offered in tape-on-reel and bulk packaging. Samples and production quantities of the PTCSL03 series are available now, with lead times of eight weeks for large orders.

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