Vishay Unveils Advanced Thin-Film Chip Resistor Arrays

Vishay has upgraded its Acas 0606 AT and 0612 AT thin-film chip resistor arrays for automotive applications. These new versions offer resistance ratios up to 1:100 and can handle operating voltages up to 100V.

The improved Beyschlag devices give designers more flexibility by supporting a wider range of input voltages in voltage divider setups or achieving a five-fold increase in amplification compared to older models. The 0606 AT and 0612 AT feature two and four integrated resistors on one chip, respectively. This integration not only lowers costs compared to using multiple discrete resistors but also enhances stability with a reliable divider ratio.

These arrays are AEC-Q200 qualified and offer high accuracy, with a temperature operation range up to +155°C. They have an absolute tolerance of ±0.1%, a relative tolerance of ±0.05%, an absolute TCR down to ±10ppm/K, and a relative TCR down to ±5ppm/K. The resistance values range from 47Ω to 150kΩ and can be matched or varied.

Built to withstand harsh conditions, these devices have a moisture resistivity of less than 0.5% change in resistance after 1000 hours at +85°C and 85% relative humidity. They also meet sulphur resistance standards as per ASTM B 809 and have a 1kV ESD capability, with a max dissipation rate of 0.125W per element.

These resistor arrays are ideal for various precision analogue circuits, including voltage dividers, signal conditioning, op-amps, and feedback circuits. They are commonly used in automotive electronics like engine control units, gearbox controls, safety systems, power supply electronics, body electronics, braking systems, climate control, steering technology, and lighting. Additionally, they find applications in audio equipment, instrumentation, and industrial electronics such as battery measurement systems, sensors, scales, and precision amplifiers.

Samples and production quantities are readily available, with lead times of eight weeks.