021806.3HXPFUSE 250V IEC SLO 5X20MM 6.3A|LITTELFUSE INC|Lead free|RoHS Compliant BK/S506-6.3-R 0034.3125 5ST 6.3-R 021806.3MXP 0218.063HXPFUSE 250V IEC SLO 5X20MM .063A|LITTELFUSE INC|Lead free|RoHS Compliant BK/S506-63-R 0034.3105 5ST 63-R 0218.063MXP