Variable Capacitance Diodes
MA2X329
Silicon epitaxial planar type
For VHF electronic tuners
I
Features
•
Large capacitance ratio
•
Small series resistance r
D
•
Mini type package, allowing downsizing of equipment and
automatic insertion through the taping package
5°
INDICATES
CATHODE
Unit : mm
1.6
−
0.1
+
0.2
1
2
2.7
−
0.1
3.3
±
0.2
*(3.8
±
0.2)
+
0.2
0 to 0.05
Reverse voltage (DC)
Peak reverse voltage
Forward current (DC)
Junction temperature
Storage temperature
V
R
V
RM
I
F
T
j
T
stg
32
34
20
150
−55
to
+150
V
V
mA
°C
°C
5°
*(
): WL type
1 : Anode
2 : Cathode
Mini Type Package (2-pin)
Marking Symbol: 6B
I
Electrical Characteristics
T
a
= 25°C
Parameter
Reverse current (DC)
Diode capacitance
Symbol
I
R
C
D(1V)
C
D(3V)
C
D(25V)
C
D(10V)
C
D(17V)
Capacitance ratio
Diode capacitance deviation
Series resistance
*
C
D(3V)
/C
D(25V)
∆C
r
D
C
D(3V)(10V)(17V)(25V)
C
D
= 9 pF, f = 470 MHz
V
R
= 30 V
V
R
= 1 V, f = 1 MHz
V
R
= 3 V, f = 1 MHz
V
R
= 25 V, f = 1 MHz
V
R
= 10 V, f = 1 MHz
V
R
= 17 V, f = 1 MHz
25.87
2.58
9.15
3.28
9
3
1.6
42
32.64
3.20
12.44
4.46
Conditions
Min
Typ
Max
10
Unit
nA
pF
pF
pF
pF
pF
%
Ω
Note) 1．
Rated input/output frequency: 470 MHz
2． : r
f
measuring instrument: YHP MODEL 4191A RF IMPEDANCE ANALYZER
*
0.16
−
0.03
+
0.1
Parameter
Symbol
Rating
Unit
1.1
−
0.1
I
Absolute Maximum Ratings
T
a
= 25°C
+
0.2
0.3
0.55
±
0.1
1
MA2X329
C
D
V
R
100
f
=
1 MHz
T
a
=
25°C
120
Variable Capacitance Diodes
I
F
V
F
1.03
C
D
T
a
f
=
1 MHz
V
R
=
3 V
10 V
17 V
25 V
50
100
1.02
Diode capacitance C
D
(pF)
30
20
Forward current I
F
(mA)
10
60
25°C
−
40°C
C
D
(T
a
)
C
D
(T
a
=
25°C)
1.2
80
T
a
=
60°C
1.01
1.00
5
3
2
40
0.99
20
0.98
1
0
4
8 12 16 20 24 28 32 36 40
0
0
0.2
0.4
0.6
0.8
1.0
0.97
0
20
40
60
80
100
Reverse voltage V
R
(V)
Forward voltage V
F
(V)
Reverse current T
a
(
°C
)
I
R
T
a
100
V
R
=
33 V
Reverse current I
R
(nA)
10
1
0.1
0.01
0
20
40
60
80 100 120 140 160
Reverse current T
a
(
°C
)
C
D
rank classification
Primary rank classification
C
D(25V)
(pF)
3.30
3.38
3.46
3.55
3.64
Secondary rank classification
C
D(17V)
(pF)
3.73
3.82
3.92
4.02
4.12
4.22
4.33
4.44
2.60
2.67
2.74
2.81
2.88
2.95
3.02
3.10
3.18
26.00
26.65
27.32
28.00
C
D(3V)
(pF)
8
9
8
7
6
7
6
5
4
3
2
1
9.20
9.43
9.67
9.91
C
D(10V)
(pF)
12 11 10 9
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
28.70
29.42
30.16
30.91
31.68
32.47
5
4
3
2
1
10.16
10.41
10.67
10.94
11.21
11.49
11.78
12.07
12.37
2
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