Panasonic MA4X348 Datasheet
Variable Capacitance Diodes
MA4X348
Silicon planar type
For AFC of FM tuner
Unit : mm
+ 0.2
2.8
− 0.3
+ 0.25
1.5
0.65 ± 0.15 0.65 ± 0.15
− 0.05
■ Features
•
Two elements contained independently, allowing high density
mounting
•
Small reverse current I
R
− 0.05
+ 0.2
2.9
■ Absolute Maximum Ratings Ta = 25°C
Parameter Symbol Rating Unit
Reverse voltage (DC) V
Peak reverse voltage V
Junction temperature T
Storage temperature T
R
RM
j
stg
15 V
15 V
150 °C
−55 to +150 °C
Marking Symbol: M1S
Internal Connection
■ Electrical Characteristics Ta = 25°C
Parameter Symbol Conditions Min Typ Max Unit
Reverse current (DC) I
Diode capacitance C
R1
I
R2
D
QQV
Note) Rated input/output frequency: 50 MHz
VR = 12 V 100 nA
VR = 12 V, Ta = 75°C1µA
VR = 10 V, f = 1 MHz 10 16 pF
= 10 V, f = 50 MHz 40
R
1.9 ± 0.2
− 0.1
+ 0.2
1.1
0.1 to 0.3
0.4 ± 0.2
0.5 R
4
0.950.95
3
0.8
− 0.05
+ 0.1
0.4
0.5
0 to 0.1
− 0.05
+ 0.1
1
1.45
0.4
2
− 0
+ 0.1
0.2
0.6
− 0.06
+ 0.1
0.16
1 : Cathode 1
2 : Cathode 2
3 : Anode 2
4 : Anode 1
Mini Type Package (4-pin)
4
3
1
2
1
MA4X348
Variable Capacitance Diodes
IF V
3
10
2
10
)
mA
(
F
10
Ta = 150°C − 20°C
1
Forward current I
−1
10
−2
10
0 0.2 0.4 0.6 0.8 1.0 1.2
F
Forward voltage VF (V
IR T
2
10
)
10
nA
(
R
1
−1
10
Reverse current I
−2
10
–40 0 40 80 120 160 200
a
VR = 15 V
Ambient temperature Ta (°C
25°C100°C
)
12 V
10 V
IR V
Ta = 150°C
100°C
25°C
CD V
R
R
)
f = 1 MHz
= 25°C
T
a
)
1.6
1.4
)
1.2
V
(
F
1.0
0.8
0.6
0.4
Forward voltage V
0.2
0
−40 0 40 80 120 160 200
4
10
3
10
2
10
Q
10
1
0.3
10
)
1
mA
(
R
−1
10
−2
10
Reverse current I
−3
10
0 5 10 15 20 25 30
Reverse voltage VR (V
40
35
)
30
pF
(
D
25
20
15
10
Diode capacitance C
5
0
)
030520251510
Reverse voltage VR (V
VF T
a
IF = 100 mA
10 mA
3 mA
Ambient temperature Ta (°C
Q V
R
f = 50 MHz
= 50°C
T
a
3 30 300100101
Reverse voltage VR (V
)
)
2
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