1

Varistors

Silicon epitaxial planar type variable resistor

For temperature and reduced voltage compensation

I 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

R

• Large power dissipation

• Wide forward voltage V

I Absolute Maximum Ratings T

Unit : mm

1

：Cathode

2

：Anode

JEDEC

：DO-34

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Reverse current

MA2C0290A/B

10

µA

(DC)

MA2C029WA/WB

1

MA2C029TA/TB

MA2C029QA/QB

Forward voltage

MA2C0290A

0.56

0.61

V

(DC)

MA2C0290B

0.59

0.64

MA2C029WA/WB

µA

0.77

MA2C029TA/TB

1.15

MA2C029QA/QB

1.60

Forward voltage

MA2C0290A/B

1.1

V

(DC)

MA2C029WA

1.18

1.28

MA2C029WB

1.26

1.36

MA2C029TA

1.76

1.92

MA2C029TB

1.88

2.04

MA2C029QA

2.20

2.40

MA2C029QB

2.34

2.54

Temperature

MA2C0290A/B

−∆V

∆TI

°C to +150°C)

2.0

mV/

°C

coefficient of

MA2C029WA/WB

°C to +150°C)

4.6

forward voltage

MA2C029TA/TB

6.5

MA2C029QA/QB

8.8

I Electrical Characteristics T

Type No.

MA2C0290A

MA2C0290B

MA2C029WA MA2C029WB

Color

Red

Blue

Light Blue

Brown

Yellow

Blue

Green

Brown

I Cathode Indication

Parameter

Symbol

Rating

Unit

Reverse voltage (DC)

6V

Forward

MA2C0290A/B

150

mA

current (DC) MA2C029WA/WB

100

MA2C029TA/TB

70

MA2C029QA/QB

 

50

Power dissipation

150

mW

Junction temperature

150

°C

Storage temperature

−55 to +150

°C

Note) * : Body Color ; Black

φ 0.45 max.

φ 1.75 max.

COLORED BAND

INDICATES

CATHODE

2

1

Note) Rated input/output frequency: 100 MHz