Document
Varistors
MA3X028
Series
+ 0.2
Silicon epitaxial planar type variable resistor
2.8 − 0.3
Unit : mm
0.65 ± 0.15
For temperature and reduced voltage compensation I Features
• Mini type package • Extremely small reverse current IR • High reliability with planar structure • Wide forward voltage VF range
0.65 ± 0.15
1.5 − 0.05
+ 0.25
0.95
2.9 − 0.05
1.9 ± 0.2
+ 0.2
1 3 2
0.95
1.45
1.1 − 0.1
Parameter Reverse voltage (DC) MA3X0280A/B Forward current (DC) MA3X028WA/WB MA3X028TA/TB Power dissipation Junction temperature Storage temperature
Symbol VR IFM
Rating 6 150 100 70
Unit V mA
1 Anode 2 NC JEDEC TO-236 3 Cathode EIAJ SC-59A Mini Type Package (3-pin)
PD Tj Tstg
150 125 −55 to +125
mW °C °C
Marking Symbol • MA3X0280A • MA3X0280B • MA3X028WA • MA3X028WB • MA3X028TA • MA3X028TB
: MD : ME : MF : MK : ML : MM
I Electrical Characteristics Ta = 25°C
Parameter Reverse current (DC) Forward voltage MA3X028WA/WB (DC) MA3X028TA VF2 IF = 1.5 mA IF = 3 mA Symbol IR VF1 VR = 6 V IF = 10 µA 0.77 1.15 0.56 0.59 1.18 1.26 1.76 1.88 −∆VF/∆T IF = 3 mA 2.0 4.6 6.5 0.61 0.64 1.28 1.36 1.92 2.04 mV/°C V Conditions Min Typ Max 1.0 Unit µA V
Forward voltage MA3X0280A (DC) MA3X0280B MA3X028WA MA3X028WB MA3X028TA MA3X028TB Temperature coefficient of forward voltage MA3X0280A/B MA3X028WA MA3X028TA
Note) Rated input/output frequency: 100 MHz
0 to 0.1
0.1 to 0.3 0.4 ± 0.2
0.8
I Absolute Maximum Ratings Ta = 25°C
0.16 − 0.06
+ 0.2
+ 0.1
0.4 − 0.05
+ 0.1
1
MA3X028 Series
Characteristics charts of MA3X028
102
Varistors
IF V F
Ta = 25°C
0.8
VF Ta
IF = 1.5 mA
Forward current IF (mA)
Forward voltage VF (V)
10
0.6
MA3X0280B MA3X0280A
1
0.4
10−1
MA3X0280A
MA3X0280B
0.2
10−2
0
0.2
0.4
0.6
0.8
1.0
0 −40
0
40
80
120
Forward voltage VF (V)
Ambient temperature Ta (°C)
Characteristics charts of MA3X028W IF VF
102 MA3X028WA
2.0 IF = 3 mA
VF Ta
Forward current IF (mA)
Forward voltage VF (V)
10
1.5 MA3X028WB MA3X028WA
1 MA3X028WB
1.0
10−1
0.5
10−2
0
0.4
0.8
1.2
1.6
2.0
0 −40
0
40
80
120
Forward voltage VF (V)
Ambient temperature Ta (°C)
Characteristics charts of MA3X028T IF VF
160 Ta = 25°C 140
VF Ta
2.8 IF = 3 mA 2.4
Forward current IF (mA)
Forward voltage VF (V)
120 100 80 60 40 20 0 MA3X028TB MA3X028TA
2.0
MA3X028TB
1.6 MA3X028TA 1.2 0.8 0.4 0 −40
0
0.5
1.0
1.5
2.0
2.5
3.0
0
40
80
120
160
Forward voltage VF (V)
Ambient temperature Ta (°C)
2
.