Varistors
MA2C029
I
Features
Series
Unit : mm
φ
0.45 max.
COLORED BAND
INDICATES
CATHODE
1
0.2 max.
13 min.
Silicon epitaxial planar type variable resistor
For temperature and reduced voltage compensation
•
High reliability achieved through combination of a planar type
chip and glass sealing structure
•
Easy mounting because of employing DO-35 (DHD) envelope
•
Extremely small reverse current I
R
•
Large power dissipation
•
Wide forward voltage V
F
range
I
Absolute Maximum Ratings
T
a
= 25°C
0.2 max.
Parameter
Reverse voltage (DC)
MA2C0290A/B
Forward
current (DC) MA2C029WA/WB
MA2C029TA/TB
MA2C029QA/QB
Power dissipation
Junction temperature
Storage temperature
Symbol
V
R
I
FM
Rating
6
150
100
70
50
Unit
V
mA
2
φ
1.75 max.
P
tot
T
j
T
stg
150
150
−55
to
+150
mW
°C
°C
1 Cathode
：
2 Anode
：
JEDEC DO-34
：
I
Electrical Characteristics
T
a
= 25°C
Parameter
Reverse current
(DC)
MA2C0290A/B
MA2C029WA/WB
MA2C029TA/TB
MA2C029QA/QB
MA2C0290A
MA2C0290B
MA2C029WA/WB
MA2C029TA/TB
MA2C029QA/QB
Forward voltage
(DC)
MA2C0290A/B
MA2C029WA
MA2C029WB
MA2C029TA
MA2C029TB
MA2C029QA
Temperature
coefficient of
forward voltage
MA2C029QB
MA2C0290A/B
MA2C029WA/WB
MA2C029TA/TB
MA2C029QA/QB
−∆V
F
/∆T
I
F
= 1.5 mA (T
j
= 25°C to
+150°C)
I
F
= 3 mA (T
j
= 25°C to
+150°C)
V
F2
Symbol
I
R
V
R
= 6 V
V
R
= 6 V
Conditions
Min
Typ
Max
10
1
Unit
µA
Forward voltage
(DC)
V
F1
I
F
= 1.5 mA
V
F1
= 10
µA
0.56
0.59
0.77
1.15
1.60
1.18
1.26
1.76
1.88
2.20
2.34
2.0
4.6
6.5
8.8
0.61
0.64
13 min.
2.2
±
0.3
V
I
F
= 50 mA
I
F
= 3 mA
1.1
1.28
1.36
1.92
2.04
2.40
2.54
V
mV/°C
Note) Rated input/output frequency: 100 MHz
I
Cathode Indication
Type No.
Color
MA2C0290A
Red
MA2C0290B MA2C029WA MA2C029WB
Blue
Light Blue
Brown
MA2C029TA
*
MA2C029TB
*
MA2C029QA
*
MA2C029QB
*
Yellow
Blue
Green
Brown
Note) * : Body Color ; Black
1
MA2C029 Series
Characteristics charts of MA2C029
I
F
V
F
1 000
T
a
=
25°C
1.0
Varistors
Characteristics charts of MA2C029Q
V
F
T
a
I
F
=
1.5 mA
I
F
V
F
100
T
a
= 150°C
100°C
20°C
25°C
100
0.8
Forward current I
F
(mA)
Forward current I
F
(mA)
Forward voltage V
F
(V)
10
MA2C0290A
10
MA2C0290B
1
0.6
MA2C0290A
0.4
MA2C0290B
1
0.1
MA2C029QA
0.1
0.2
0.01
0
0.2
0.4
0.6
0.8
1.0
0
−40
0
40
80
120
160
0.01
MA2C029QB
0
0.8
1.6
2.4
3.2
4.0
4.8
Forward voltage V
F
(V)
Ambient temperature T
a
(
°C
)
Forward voltage V
F
(V)
Characteristics charts of MA2C029W
I
F
V
F
1 000
T
a
=
25°C
2.0
I
F
=
3 mA
1.6
V
F
T
a
5
V
F
T
a
MA2C029QA
MA2C029QB
100
4
Forward current I
F
(mA)
Forward voltage V
F
(V)
10
MA2C029WA
MA2C029WB
1.2
MA2C029WA
0.8
MA2C029WB
Forward voltage V
F
(V)
3
I
F
=
50 mA
2
3 mA
1
0.01 mA
1
0.1
0.4
0.01
0
0.4
0.8
1.2
1.6
2.0
2.4
0
−40
0
40
80
120
160
0
−40
0
40
80
120
160
200
Forward voltage V
F
(V)
Ambient temperature T
a
(
°C
)
Ambient temperature T
a
(
°C
)
Characteristics charts of MA2C029T
I
F
V
F
100
T
a
=
25°C
V
F
T
a
2.5
I
F
=
3 mA
2.0
Forward current I
F
(mA)
Forward voltage V
F
(V)
10
MA2C029TA
MA2C029TB
MA2C029TA
1.5
1
MA2C029TB
1.0
0.1
0.5
0.01
0
1
2
3
4
0
−40
0
40
80
120
160
Forward voltage V
F
(V)
Ambient temperature T
a
(
°C
)
2
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