Vishay power resistor with NTC, PC-TIM simplifies design

Available with an optional NTC thermistor for internal temperature monitoring and pre-applied Phase Change Thermal Interface Material (PC-TIM) for more efficient mounting, the Vishay MCB ISOA200 offers high pulse handling capability and high power dissipation up to 200W at an 80°C bottom case temperature.

Built on an exposed alumina substrate instead of a metal tab, the device lowers costs and weight for automotive, industrial, and avionics, military, and space (AMS) applications, in which it will serve as a precharge, discharge, active discharge, or snubber resistor. For applications subject to high and repetitive pulse surges, the resistor can handle high energy pulses up to 140J for 0.1s and is multi-pulsed tested. Additional custom testing options for the device are also available.

With the option to integrate an AEC-Q200 qualified, temperature cycle tested NTC thermistor inside the resistor package, the ISOA200 simplifies designs and saves board space, while its optional PC-TIM streamlines installation in production. The device's high power and high energy dissipation further simplify designs while lowering costs by reducing the need for power components.

The ISOA200 features a resistance range from 10Ω to 1MΩ, with tolerances of ±5% and ±10%, and TCR of ±100ppm/K and ±150ppm/K. The resistor offers a maximum operating voltage of 1,500V, an operating temperature range of -55°C to +150°C, and dielectric strength of 4,000Vrms. The RoHS-compliant device offers a non-inductive design and can include two different resistors.

Samples and production quantities of the new resistor are available now, with lead times of 12 weeks.