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BB439 Fiches technique(PDF) 2 Page - Siemens Semiconductor Group

No de pièce BB439
Description  Silicon Variable Capacitance Diode (For VHF tuned circuit applications High figure of merit)
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Fabricant  SIEMENS [Siemens Semiconductor Group]
Site Internet  http://www.siemens.com/
Logo SIEMENS - Siemens Semiconductor Group

BB439 Fiches technique(HTML) 2 Page - Siemens Semiconductor Group

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Semiconductor Group
2
BB 439
Electrical Characteristics
at TA = 25 ˚C, unless otherwise specified.
Parameter
Symbol
min.
typ.
Unit
Values
max.
Reverse current
VR = 28 V
VR = 28 V, TA = 60 ˚C
IR
nA
20
200
Diode capacitance, f = 1 MHz
VR = 3 V
VR = 25 V
CT
pF
26
4.3
32
6
Capacitance matching
VR = 3 V … 25 V, f = 1 MHz
CT / CT
––3
Figure of merit
f = 50 MHz, VR = 3 V
f = 200 MHz, VR = 25 V
Q
280
600
Capacitance ratio, f = 1 MHz
VR = 3 V, 25 V
CT3 / CT25
5
6.5
%
Series resistance
f= 100 MHz, CT = 12 pF
rs
0.35
0.5
Diode capacitance CT = f (VR)
f= 1 MHz


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