8541: Diodes/transistors & sim semiconductor devices; light emitting diodes

854110: Diodes, other than photosensitive or light emitting diodes 854121: Transistors, oth than photosensit, w a dissipation rate < 1 W 854129: Transistors, other than photosensitive transistors, nes 854130: Thyristors, diacs and triacs, other than photosensitive devices 854140: Photosensitive semiconduct device, photovoltaic cells & light emit di 854150: Semiconductor devices, nes 854160: Mounted piezo-electric crystals 854190: Parts of mounted piezo-electric crystals and semiconductor devices 8541: Diodes/transistors & sim semiconductor devices; light emitting diodes