Varistors
MA2B027
I
Features
Series
Unit : mm
φ
0.56 max.
1
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
Parameter
Reverse voltage (DC)
MA2B0270A/B
Forward
current (DC) MA2B027WA/WB
MA2B027TA/TB
MA2B027QA/QB
Power dissipation
Junction temperature
Storage temperature
P
D
T
j
T
stg
Symbol
V
R
I
FM
Rating
6
150
100
70
50
150
150
−55
to
+150
mW
°C
°C
Unit
V
mA
2
φ
1.95 max.
1 Cathode
：
2 Anode
：
JEDEC DO-35
：
I
Electrical Characteristics
T
a
= 25°C
Parameter
Reverse current
(DC)
MA2B0270A/B
MA2B027WA/WB
MA2B027TA/TB
MA2B27QA/QB
MA2B0270A
MA2B0270B
MA2B027WA/WB
MA2B027TA/TB
Forward voltage
(DC)
MA2B027QA/QB
MA2B0270A/B
MA2B027WA
MA2B027WB
MA2B027TA
MA2B027TB
MA2B027QA
MA2B027QB
MA2B0270A/B
MA2B027WA/WB
MA2B027TA/TB
MA2B027QA/QB
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
I
F
= 10
µA
0.56
0.59
0.77
1.15
1.60
0.61
0.64
24 min.
4.5 max.
24 min.
COLORED BAND
INDICATES
CATHODE
V
I
F
= 50 mA
I
F
= 3 mA
1.18
1.26
1.76
1.88
2.20
2.34
1.1
1.28
1.36
1.92
2.04
2.40
2.54
2.0
4.6
6.5
8.8
V
Temperature
coefficient of
forward voltage
−∆V
F
/∆T
I
F
= 1.5 mA
I
F
= 3 mA
mV/°C
Note) Rated input/output frequency: 100 MHz
I
Cathode Indication
Type No.
Color
MA2B0270A
Yellow
MA2B0270B MA2B027WA MA2B027WB
Blue
Light Blue
Brown
MA2B927TA
*
MA2B027TB
*
MA2B027QA
*
MA2B027QB
*
Yellow
Blue
Green
Brown
Note) * : Body Color ; Black
1
MA2B027 Series
Characteristics charts of MA2B027
I
F
V
F
1 000
T
a
=
25°C
1.0
Varistors
Characteristics charts of MA2B027Q
V
F
T
a
100
I
F
=
1.5 mA
I
F
V
F
T
a
=
25°C
Forward current I
F
(mA)
Forward current I
F
(mA)
100
0.8
Forward voltage V
F
(V)
10
MA2B027QA
MA2B027QB
10
MA2B0270A
0.6
MA2B0270A
0.4
MA2B0270B
1
MA2B0270B
1
0.1
0.1
0.2
0.01
0
0.2
0.4
0.6
0.8
1.0
0
−40
0.01
0
40
80
120
160
0
1
2
3
4
Forward voltage V
F
(V)
Ambient temperature T
a
(
°C
)
Forward voltage V
F
(V)
Characteristics charts of MA2B027W
I
F
V
F
1 000
T
a
=
25°C
V
F
T
a
2.0
I
F
=
3 mA
1.6
3.2
2.8
V
F
T
a
I
F
=
3 mA
100
Forward current I
F
(mA)
Forward voltage V
F
(V)
Forward voltage V
F
(V)
2.4
2.0
1.6
1.2
0.8
0.4
MA2B027QB
10
MA2B027WA
MA2B027WB
1.2
MA2B027WA
0.8
MA2B027WB
1
MA2B027QA
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
Forward voltage V
F
(V)
Ambient temperature T
a
(
°C
)
Ambient temperature T
a
(
°C
)
Characteristics charts of MA2B027T
I
F
V
F
100
T
a
=
25°C
2.5
I
F
=
3 mA
V
F
T
a
Forward current I
F
(mA)
Forward voltage V
F
(V)
10
MA2B027TA
MA2B027TB
2.0
MA2B027TA
1.5
1
MA2B027TB
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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