Vishay Introduces Thick Film Power Resistors with Optional NTC Thermistor and PC-TIM to Simplify Design, Save Board Space and Reduce Cost
【Lansheng Technology Information】May 31, 2023 — Vishay Intertechnology announced that it has launched a new thick film power resistor ISOA that has passed AEC-Q200 certification, adopts a small SOT-227 package, and can be directly mounted on a heat sink. . Vishay MCB has high pulse handling capability, 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 the paste Install 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 snubber resistor, reducing costs for automotive, industrial, avionics, defense and space (AMS) applications. ISOA can choose to integrate AEC-Q200 certified and temperature cycle tested NTC thermistors in the resistor package, which simplifies design and saves board space. At the same time, optional PC-TIM improves the efficiency of production, processing and placement.
Vishay's recently released device uses an aluminum substrate instead of a metal sheet, which can be used as a pre-charge, discharge, active discharge or snubber resistor, reducing the cost of automotive, industrial, avionics, defense and space (AMS) applications. ISOA can choose to integrate AEC-Q200 certified and temperature cycle tested NTC thermistors in the resistor package, which simplifies design and saves board space. At the same time, optional PC-TIM improves the efficiency of production, processing and placement.
The device's high power and high energy dissipation simplifies design and reduces cost by requiring fewer power devices. The resistance has high-energy pulse handling capability (up to 110 J/0.1 s), and has passed 3000 times of 230 J/670 ms and 5000 times of 350 J/1060 ms multi-pulse cycle test, suitable for various kinds of high-energy and repetitive surge pulses application. In addition, the device provides customer-defined tests.
ISOA resistance ranges from 0.47 Ω to 1 MΩ with tolerances of 5 % and 10 %, and TCRs of ± 100 ppm/K, 150 ppm/K, and ± 300 ppm/K, respectively. The maximum working voltage of the resistor is 1500 V, the working temperature range is -55 C to +150 C, and the dielectric strength is 4000 Vrms. The device is RoHS compliant and features an inductorless design that can include two different resistors.
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