Precision bulk metal foil resistors target high-volume OEMs

VPG Alpha has introduced a new series of precision surface-mount bulk metal foil resistors that are the first such devices to be manufactured in a fully automated process — providing competitive pricing in high-volume applications for OEMs. The RW Series resistors feature low TCR of ±2 ppm/C or ±5 ppm/C and resistance tolerance as low as ±0.01% in 0603, 0805, and 1206 case sizes. The devices are optimized for precision instrumentation, automatic test equipment, scales, audio equipment, and any medical or industrial applications that require resistors with extremely tight load-life stability of ±0.005% typical at 70C and rated power for 2,000 hours. In these applications, the devices provide superior TCR and long-term stability when compared to thin film resistors, as well as shorter lead times. In addition, the RW Series' industry-standard packages eliminate the need for PCB changes in existing designs. Offered in the 0603 package with a power rating of 0.1W and resistance to 5kohm, the RWA is ideal for applications where space savings are a primary concern. The RWB features a 0.2W power rating and resistance to 10kohm in the most common package size: the 0805. With a 0.3W power rating and resistance to 30kohm, the RWC is ideal for converting 4mA to 20mA input signals into 1 V to 5V output signals in applications such as factory automation and process control. All three devices are RoHS-compliant, says the company.