This standard is applicable to the product quality classification of thin film dielectric Class C preadjusted variable capacitors. This standard only gives some test items and main technical indicators, and must be used together with GB 6254, GB 11303 and related detailed specifications.
SJ/T 9551.4-1993 history
1993SJ/T 9551.4-1993 Type C film dielectric preset variable capacitors--Quality grading standard