PTC inrush current limiters with automotive qualifications

July 18, 2017 // By Nick Flaherty
TDK PTC inrush limiters
TDK has extended its range of EPCOS PTC-based inrush current limiters with broader resistance and temperature capabilities for home and automotive applications.

The four new versions of the B5921*J0130A020 series with plastic housing are designed for voltages from 280 V AC to 560 V AC, offer rated resistances from 22 Ω to 100 Ω at 25 °C and have a heat capacity of up to 2.3 J/K. They are UL approved and are qualified to AEC-Q200.

The B594* and B597* series of leaded disk components offer rated voltages of between 260 V AC and 560 V AC. Depending on the type, their rated resistances are between 25 Ω and 1100 Ω. These protection devices have been approved in accordance with UL, IECQ and VDE. All types of both series are RoHS-compatible.

One great advantage of PTC inrush current limiters is their intrinsic safety. For example, if a short circuit should occur within a device when it is switched on, the component very quickly limits the current to non-critical values.

Typical applications for PTC inrush current limiters include converters and power supplies for industrial and household electronics as well as in e-mobility applications. These include onboard charging circuits and the charging and discharging of DC link capacitors in the drives of hybrid and electric vehicles.

The limiters are aimed at converters and power supply units for industrial and household electronics as well as onboard charging circuits and the charging and discharging of DC link capacitors in the drives of hybrid and electric vehicles.

Further information is at www.epcos.com/ptc_icl


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