Vishay Introduces Thick Film Power Resistors Optionally Available With NTC Thermistor And PC-TIM

htelec.net takes you to know that the device is AEC-Q200 certified, adopts a small SOT-227 package, can be directly mounted on a heat sink, has high pulse handling capability, and has a power dissipation of up to 120 W.

AEC-Q200 Qualified Device in a Small SOT-227 Package for Direct Heatsink Mounting, High Pulse Handling Capability, and 120 W Power Dissipation

Vishay Intertechnology, Inc. announces that it has launched a new thick film power resistor ISOA.Vishay MCB ISOA has high pulse handling capability and can be directly mounted on the heat sink in a small SOT-227 package with AEC-Q200 certification. Power dissipation up to 120 W at 85 °C bottom case temperature, optional NTC thermistor for internal temperature monitoring, pre-coated phase change thermal interface material (PC-TIM) to improve placement efficiency.

The recently released device uses an aluminum substrate instead of a metal sheet, which can be used as a pre-charge\discharge\active discharge or buffer resistor, reducing the cost of automotive\industrial\aviation electronics\defense and space (AMS) applications. ISOA can be selected in resistor packages Integrated with AEC-Q200 certified and temperature cycle tested NTC thermistor, which simplifies design and saves board space. At the same time, optional PC-TIM improves the efficiency of production, processing and placement.

The high power and high energy dissipation of the device simplify the design and reduce the required power devices, thereby reducing the cost. The resistor has a high energy pulse handling capability (up to 110 J / 0.1 s), and passes 3000 times 230 J / 670 ms and 5000 times 350 J/1060 ms multi-pulse cycle test, suitable for various applications under high-energy and repetitive surge pulses. In addition, the device also provides customer-defined tests.

The ISOA resistance ranges from 0.47 Ω to 1 MΩ, the tolerance is ± 5 % and ± 10 %, and the TCR is ± 100 ppm/K\ ± 150 ppm/K and ± 300 ppm/K respectively. The maximum operating voltage of the resistor is 1500 V, and the working The temperature range is -55 °C to +150 °C, and the dielectric strength is 4000 Vrms. The device is RoHS compliant and features a non-inductive design that can include two different resistors.