This composite of glass and conductive ceramic (cermet) material is then fused (baked) in an oven at about 850 °C. Thick film resistors, when first manufactured, had tolerances of 5%, but standard tolerances have improved to 2% or 1% in the last few decades.
Este composto de vidro e cerámica condutiva (cermet) fúndese nun forno a uns 850 °C. Os primeiros que se fabricaron tiñan tolerancias do 5%, pero melloraron e nas últimas décadas a tolerancia estándar é do 2% ou do 1%.