The RAF Series from Stackpole is a small chip resistor array, consisting of two or four isolated 0201 equivalent resistors in a single rectangular-shaped chip with no scallops or holes.
By removing the scallops that chip arrays usually have, the substrate becomes less complex and less expensive. This type of package offers more than a 33% size and weight reduction over discrete chip resistors. The RAF Series helps to downsize a circuit design without having to design in discrete 0201 chip resistors, which can be difficult for automated equipment to handle and place.
The RAF Series offers four resistors in a package smaller than a discrete 0603 chip and two resistors in a package that is smaller than a discrete 0402 chip. It is available in 5% tolerance with 200 ppm TCR over a wide resistance value range.
Pricing: Varies with size ranges from $0.025 to $0.027 each for full package quantities.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.