
TWPEC
Variable Capacitance Diode
Description
The 1W404 is a variable capacitance diode contained
for electronic tuning of wide-band CATV tuners using a
super-small-miniature flat package (SSVC).
Features
.
Super-small-miniature flat package
.
Low series resistance
.
Large capacitance ratio
.
Small leakage current
10nA Max (V
R
=28V)
.
Capacitance deviation within
2%
0.65Ω Max (f=470MHz)
11.5 Typ (C2/C25)
Absolute Maximum Ratings
(Ta=25
℃
)
.
Reverse voltage
.
Operating temperature
Topr
.
Storage temperature
Tstg -65~+150 ℃
V
R
34
-20~+75 ℃
V
Applications
Electronic tuning of wide-band CATV tuners
Structure
Silicon epitaxial planar type diode
Electrical Characteristics
(Ta=25
℃
)
Item
Symbol
Conditions
Reverse voltage
V
R
I
R
=1μA
Reverse current
I
R
V
R
=28V
C
2
V
R
=2V, f=1MHz
Diode capacitance
C
25
V
R
=25V, f=1MHz
C
2
/C
25
Capacitance ratio
C
25
/C
28
rs
Tester:4191A
Tester:4291B
Capacitance deviation in a
matching group
△
C
:
The capacitance deviation of continuous 20 pcs of 1W404 is ranged within 2% in any
place of the taping package.
TWPEC reserves the right to change products and specifications without prior notice. This information does not
convey any license by any implication or otherwise under any patens or other right. Application circuits shown,
if any, are typical examples illustrating the operation of the devices. TWPEC cannot assume responsibility for
any problems arising out of the use of these circuits.
Min.
34
29.50
2.60
11.0
1.03
Typ.
11.5
0.58
0.61
Max.
10
33.50
2.90
0.65
2.0
Unit
V
nA
pF
pF
Ω
Series resistance
C
D
=14pF, f=470MHz
ΔC
V
R
=2~25V, f=1MHz
%
1W404
1