Si-N/7c (TO-92)
BF 420(S): Vid,300V, 25..50mA, 0.83W, >60MHz
BF 420 A: Vid,300V, 0.5A, 0.8W, >60MHz
BF 420 L: Vid,300V, 0.5A, 0.625W, >60MHz; Philips: 50mA
BF 420 P: Vid,300V, 25..50mA, 0.9W, >60MHz
BF 420 P3: Vid,300V, 25..50mA, 0.9W, >60MHz