variable capacitance diodes 136 ma2c840 (ma840) silicon epitaxial planar type for afc of uhf and vhf electronic tuner features ? super-small envelope (do-34), allowing to insert a 5 mm pitch hole ? small series resistance r d ? large variable capacitance range absolute maximum ratings t a = 25 c unit: mm parameter symbol rating unit reverse voltage (dc) v r 32 v peak reverse voltage v rm 34 v junction temperature t j 150 c storage temperature t stg ? 55 to + 150 c parameter symbol conditions min typ max unit forward voltage (dc) v f i f = 100 ma 1.1 v reverse current (dc) i r v r = 30 v 10 na terminal capacitance c t v r = 2 v, f = 1 mhz 10.5 16 pf v r = 10 v, f = 1 mhz 3.3 5.7 capacitance ratio * c t(2v) /c t(10v) 2.5 3.4 ? c t(6v) /c t(10v) 1.64 series resistance r d c d = 9 pf, f = 470 mhz 1.2 ? electrical characteristics t a = 25 c note) 1. rated input/output frequency: 470 mhz y 2. * :c t(2v) /c t(10v) , c t(6v) /c t(10v) rank classification table 1: cathode 2: anode do-34-a1 package cathode mark 1st band 2nd band class a b m 1st band light blue light blue light blue 2nd band white green light blue class a b m c t(2v) /c t(10v) 2.5 to 3.0 2.8 to 3.4 2.8 to 3.4 c t(6v) /c t(10v) ??> 1.64 note) the part number in the parenthesis shows conventional part number.
variable capacitance diodes 137 3.0 16 3.0 15 14 13 12 11 10 3.5 4.0 4.5 5.0 5.5 6.0 c t(2v) /c t(10v) = ? ? = ? ? = = = = ? = = = c t ? v r c t ? t a i f ? v f i r ? v r i r ? t a c t rank classification ma2c840
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