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Variable Capacitance Diodes
MA2B345
Silicon epitaxial planar type
0.56 max.
Unit : mm
For AFC of FM tuner
1
I Features
* High reliability achieved through combination of a planar type chip and glass sealing structure * Small package allowing easy mounting * Small reverse current IR
Parameter Reverse voltage (DC) Peak reverse voltage Junction temperature Storage temperature
Symbol VR VRM Tj Tstg
Rating 15 15 200 -65 to +200
Unit V V C C
2 1.95 max.
1 : Anode 2 : Cathode JEDEC : DO-35
Body Color : Black
I Electrical Characteristics Ta = 25C
Parameter Reverse current (DC) Symbol IR Ct Q VR = 12 V VR = 12 V, Ta = 75C Terminal capacitance Q VR = 10 V, f = 1 MHz VR = 10 V, f = 50 MHz 10 40 Conditions Min Typ Max 100 1 16 Unit nA A pF
Note) Rated input/output frequency: 100 MHz
I Cathode Indication
Type No. Color MA2B345 Silver
24 min.
I Absolute Maximum Ratings Ta = 25C
4.5 max.
24 min.
COLORED BAND INDICATES CATHODE
1
MA2B345
IF V F
103
Variable Capacitance Diodes
IR V R
102 Ta = 150C 1.6 1.4
VF Ta
102
Forward current IF (mA)
Reverse current IR (nA)
Forward voltage VF (V)
10
1.2 1.0 IF = 100 mA 0.8 0.6 0.4 0.2 10 mA 3 mA
10
100C
25C
1
100C
1
Ta = 150C
- 20C
10-1
10-1
25C
10-2
10-2
0 0.2 0.4 0.6 0.8 1.0 1.2
0
4
8
12
16
20
24
28
32
0 -40
0
40
80
120
160
200
Forward voltage VF (V)
Reverse voltage VR (V)
Ambient temperature Ta (C)
IR T a
103
32 28
Ct VR
f = 1 MHz Ta = 25C
IF(surge) tW
1 000 Ta = 25C IF(surge) tW Non repetitive
Terminal capacitance Ct (pF)
102
Reverse current IR (nA)
VR = 15 V 12 V 10 V
Forward surge current IF(surge) (A)
24 20 16 12 8 4
100
10
10
1
10-1
1
10-2
-40
0
40
80
120
160
200
0
0
4
8
12
16
20
24
28
32
0.1 0.03
0.1
0.3
1
3
10
30
Ambient temperature Ta
(C)
Reverse voltage VR (V)
Pulse width tW (ms)
2

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