Varistors
MA2C029 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 IR
•Large power dissipation
•Wide forward voltage VF range
■ Absolute Maximum Ratings Ta = 25°C
Parameter |
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Symbol |
Rating |
Unit |
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Reverse voltage (DC) |
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VR |
6 |
V |
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Forward |
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MA2C0290A/B |
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IFM |
150 |
mA |
current (DC) |
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MA2C029WA/WB |
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100 |
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MA2C029TA/TB |
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70 |
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MA2C029QA/QB |
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50 |
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Power dissipation |
Ptot |
150 |
mW |
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Junction temperature |
Tj |
150 |
°C |
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Storage temperature |
Tstg |
−55 to +150 |
°C |
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Unit : mm
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φ 0.45 max. |
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COLORED BAND |
1 |
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INDICATES |
max.0.2 |
min.13 |
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CATHODE |
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2.2 ± 0.3 |
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0.2 max. |
13 min. |
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2 |
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φ 1.75 max. |
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1 Cathode
2 Anode JEDEC DO-34
■ Electrical Characteristics Ta = 25°C
Parameter |
Symbol |
Conditions |
Min |
Typ |
Max |
Unit |
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Reverse current |
MA2C0290A/B |
IR |
VR = 6 V |
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10 |
µA |
(DC) |
MA2C029WA/WB |
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VR = 6 V |
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1 |
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MA2C029TA/TB |
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MA2C029QA/QB |
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Forward voltage |
MA2C0290A |
VF1 |
IF = 1.5 mA |
0.56 |
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0.61 |
V |
(DC) |
MA2C0290B |
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0.59 |
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0.64 |
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MA2C029WA/WB |
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VF1 = 10 µA |
0.77 |
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MA2C029TA/TB |
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1.15 |
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MA2C029QA/QB |
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1.60 |
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Forward voltage |
MA2C0290A/B |
VF2 |
IF = 50 mA |
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1.1 |
V |
(DC) |
MA2C029WA |
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IF = 3 mA |
1.18 |
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1.28 |
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MA2C029WB |
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1.26 |
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1.36 |
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MA2C029TA |
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1.76 |
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1.92 |
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MA2C029TB |
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1.88 |
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2.04 |
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MA2C029QA |
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2.20 |
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2.40 |
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MA2C029QB |
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2.34 |
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2.54 |
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Temperature |
MA2C0290A/B |
−∆VF/∆T |
IF = 1.5 mA (Tj = 25°C to +150°C) |
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2.0 |
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mV/°C |
coefficient of |
MA2C029WA/WB |
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IF = 3 mA (Tj = 25°C to +150°C) |
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4.6 |
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forward voltage |
MA2C029TA/TB |
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6.5 |
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MA2C029QA/QB |
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8.8 |
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Note) Rated input/output frequency: 100 MHz
■ Cathode Indication
Type No. |
MA2C0290A |
MA2C0290B |
MA2C029WA |
MA2C029WB |
MA2C029TA* |
MA2C029TB* |
MA2C029QA* |
MA2C029QB* |
Color |
Red |
Blue |
Light Blue |
Brown |
Yellow |
Blue |
Green |
Brown |
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Note) * : Body Color ; Black
1
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