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E97454A82-TE
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Absolute Maximum Ratings (Ta=25 °C)
• Reverse voltage VR 34 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
Description
The 1T399 is a variable capacitance diode
designed for the electronic tuning of wide-band
CATV tuners, and it has a super miniature package.
Features
• Super miniature package
• Small series resistance 0.75 Ω Max. (f=470 MHz)
• Large capacitance ratio 11.7 Typ. (C2/C25)
18.0 Typ. (C1/C28)
• Small leak current 10 nA Max. (VR=28 V)
• Capacitance deviation in a matching group:
within 2 %
Applications
Electronic tuning of wide-band CATV tuners
Structure
Silicon epitaxial planar-type diode
Variable Capacitance Diode
M-235
1T399
Electrical Characteristics (Ta=25 °C)
Item
Reverse current
Diode capacitance
Capacitance ratio
Series resistance
Capacitance deviation in a
matching group
Symbol
IR
C2
C25
C2/C25
C25/C28
rs
∆C
Conditions
VR=28 V
VR=2 V, f=1 MHz
VR=25 V, f=1 MHz
CD=14 pF, f=470 MHz
VR=2 to 25 V, f=1 MHz
Min. Typ. Max. Unit
10 nA
29.50 35.50 pF
2.53 2.93 pF
11.0 11.7
1.03
0.75 Ω
2%