I found the features on the 1SV278B

[galody]

The 1SV278B is designed as one kind of TOSHIBA variable capacitance diode Silicon epitaxial planar type devide that can be used in TV tuning applications. Features of the 1SS302 are1)High capacitance ratio: C2 V/C25 V = 6.5 (typ.); (2)Low series resistance: rs = 0.4 Ω(typ.); (3)Excellent C-V characteristics, and small tracking error; (4)Suitable for small tuners.

The absolute maximum ratings of the 1SV278B can be summarized as1)Maximum (peak) reverse voltage: 30 V;(2)Reverse voltage: 30 V;(3)Maximum (peak) forward current: 300 mA;(4)Peak reverse voltage: 35 V;(5)Power dissipation: 100 mW;(6)Junction temperature: 125 °C;(7)Storage temperature: -55 to 125 °C.