The precision ACAS 0612 series also offers relative parameters with TCR tracking and tolerance matching. The tightest tolerance matching is ± 0.05 %, and the tightest TCR tracking is ± 5 ppm/K. Resistance values offered with this device range from 47 Ω to 221 kΩ with a standard resistance ratio up to 5:1. Higher ratios are available on request from DigiKey.