Contextual Info: SOT89 NPN SILICON PLANAR HIGH VOLTAGE TRANSISTOR FCX458 ISSUE 3 - OCTOBER 1995 FEATURES * 400 Volt V rFn * Ptot= 1 Watt CO M PLEM EN TA RY TYPE PARTM ARKING D E T A IL - FCX558 N58 ABSOLUTE MAXIMUM RATINGS. PARAM ETER SY M BO L VALUE U N IT VCBO 400 V V CEO