Sony 1T378A
The 1T378A is a variable capacitance diode designed for electronic tuning of wide-band CATV tuners, and the super miniature package allows the tuner miniaturization.DESCRIPTION
High capacitance ratio (C 25/C28) is improved to support guard band.FEATURES
● Super miniature package● Low series resistance 0.85 Ω Max.
● Large capacitance ratio 12.5 Typ. 1.03 Min.
● Small leakage current 10 nA Max.
● Capacitance deviation within 2 % M-235 (f=470 MHz) (C2/C25) (C25/C28) (VR=28 V)
ABSOLUTE MAXIMUM RATINGS
(Ta=25 °C)● Reverse voltage VR 34
● Operating temperature Topr –20 to +75
● Storage temperature Tstg –65 to +150 V °C °C
APPLICATIONS
Electronic tuning of VHF band and wide-band CATV tuners Structure Silicon epitaxial planar type diodeELECTRICAL CHARACTERISTICS
Item Reverse current Reverse voltage Diode capacitance Capacitance ratio Series resistance Capacitance deviation in a matching group Symbol IR VR C2 C25 C2/C25 C25/C28 rs ∆C Conditions VR=28 V IR=1 µA VR=2 V, f=1 MHz VR=25 V, f=1 MHz Min. 34 33.0 2.57 12.0 1.03 Typ. Max. 10 39.0 3.00 12.5 0.85 2 (Ta=25 °C) Unit nA V pF pF CD=14 pF, f=470 MHz VR=2 to 25 V, f=1 MHz Ω % The continuous 20 pieces of ∆C are guaranteed.