Sectional specification : fixed inductors with ceramic or ferrite core wound with copper wire for hf circuits ; german version en 129200 : 1994 分规范. hf电路用带陶瓷或铁心的线绕线圈
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Harmonized system of quality assessment for electronic components - sectional specification : fixed inductors with ceramic or ferrite core wound with copper wire for rf circuits 电子元器件质量评定协调体系.分规范.射频电路用带陶瓷或铁心的铜导线线绕固定电感器