Panasonic MA2B027, MA2B027W, MA2B027T, MA2B027Q Datasheet
Varistors
MA2B027 Series
Silicon epitaxial planar type variable resistor
For temperature and reduced voltage compensation
■ Features
•
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
•
Large power dissipation
•
Wide forward voltage V
range
F
■ Absolute Maximum Ratings Ta = 25°C
Parameter Symbol Rating Unit
Reverse voltage (DC) V
Forward
current (DC)
Power dissipation P
Junction temperature T
Storage temperature T
MA2B0270A/B
MA2B027WA/WB
MA2B027TA/TB
MA2B027QA/QB
R
R
I
FM
50
D
j
stg
150 mA
100
70
150 mW
150 °C
−55 to +150 °C
6V
COLORED BAND
INDICATES
CATHODE
φ 0.56 max.
1
2
φ 1.95 max.
Unit : mm
24 min.4.5 max.24 min.
1：Cathode
2：Anode
JEDEC：DO-35
■ Electrical Characteristics Ta = 25°C
Parameter Symbol Conditions Min Typ Max Unit
Reverse current
(DC)
Forward voltage
(DC)
Forward voltage
(DC)
Temperature
coefficient of
forward voltage
Note) Rated input/output frequency: 100 MHz
MA2B0270A/B
MA2B027WA/WB
MA2B027TA/TB
MA2B27QA/QB
MA2B0270A
MA2B0270B
MA2B027WA/WB
MA2B027TA/TB
MA2B027QA/QB
MA2B0270A/B
MA2B027WA
MA2B027WB
MA2B027TA
MA2B027TB
MA2B027QA
MA2B027QB
MA2B0270A/B
MA2B027WA/WB
MA2B027TA/TB
MA2B027QA/QB
I
R
V
F1
V
F2
−∆VF/∆TIF = 1.5 mA 2.0 mV/°C
VR = 6 V 10 µA
VR = 6 V 1
IF = 1.5 mA 0.56 0.61 V
0.59 0.64
IF = 10 µA 0.77
1.15
1.60
IF = 50 mA 1.1 V
IF = 3 mA 1.18 1.28
1.26 1.36
1.76 1.92
1.88 2.04
2.20 2.40
2.34 2.54
IF = 3 mA 4.6
6.5
8.8
■ Cathode Indication
Type No.
Color Yellow Blue Light Blue Brown Yellow Blue Green Brown
Note) * : Body Color ; Black
MA2B0270A MA2B0270B MA2B027WA MA2B027WB MA2B927TA*MA2B027TB*MA2B027QA*MA2B027QB
*
1
MA2B027 Series
Varistors
Characteristics charts of MA2B027
IF V
1 000
100
)
mA
(
F
10
1
Forward current I
0.1
0.01
0 0.2 0.4 0.6 0.8 1.0
MA2B0270A
Forward voltage VF (V
F
T
= 25°C
a
MA2B0270B
)
Characteristics charts of MA2B027W
V
1 000
100
)
mA
(
F
10
Forward current I
0.1
MA2B027WA
1
F
= 25°C
T
a
MA2B027WB
VF T
1.0
0.8
)
V
(
F
0.6
MA2B0270A
0.4
Forward voltage V
0.2
0
−40 0 40 80 120 160
a
I
= 1.5 mA
F
MA2B0270B
Ambient temperature Ta (°C
2.0
1.6
)
V
(
F
1.2
MA2B027WA
0.8
Forward voltage V
0.4
VF T
a IF
MA2B027WB
I
= 3 mA
F
Characteristics charts of MA2B027Q
IF V
100
T
= 25°C
a
)
10
mA
(
F
1
0.1
Forward current I
0.01
01234
)
MA2B027QA
Forward voltage VF (V
VF T
3.2
2.8
)
2.4
V
(
F
2.0
1.6
1.2
0.8
Forward voltage V
0.4
F
MA2B027QB
a
MA2B027QA
)
IF = 3 mA
MA2B027QB
0.01
0 0.4 0.8 1.2 1.6 2.0 2.4
Forward voltage VF (V)
Characteristics charts of MA2B027T
V
100
Ta = 25°C
)
mA
(
F
Forward current I
0.01
MA2B027TA MA2B027TB
10
1
0.1
01234
Forward voltage VF (V
F
)
0
−40 0 40 80 120 160
Ambient temperature Ta (°C
VF T
2.5
2.0
)
V
(
F
1.5
1.0
Forward voltage V
0.5
0
−40 0 40 80 120 160
a IF
I
MA2B027TA
MA2B027TB
Ambient temperature Ta (°C
= 3 mA
F
0
−40 0 40 80 120 160
)
Ambient temperature Ta (°C
)
)
2
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