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EMA3 / UMA3N / FMA3A
Transistors

Emitter common
(dual digital transistors)
EMA3 / UMA3N / FMA3A

Features External dimensions (Unit : mm)
1) Two DTA143Ts in a EMT or UMT or SMT package.
EMA3
2) Mounting cost and area can be cut in half.

0.5 0.5
(4) (3)

0.22

1.0
1.6
(2)
(5) (1)
1.2
1.6
Structure

0.13

0.5
Epitaxial planar type PNP silicon transistor (Built-in
Each lead has same dimensions
resistor type.)
ROHM : EMT5
Abbreviated symbol : A3
The following characteristics apply to both DTr1 and UMA3N
DTr2.

(3)
(4)

0.65 0.65

2.0
1.3
0.2

(2)
(6)

(1)
1.25

Equivalent circuit 2.1
0.15

0.9
0.7
EMA3 / UMA3N FMA3A
0to0.1

0.1Min.

R1=4.7k (3) (2) (1) R1=4.7k (3) (4) (5) Each lead has same dimensions
R1 R1 R1 R1 ROHM : UMT5
EIAJ : SC-88A
DTr2 DTr1 DTr2 DTr1
Abbreviated symbol : A3
(4) (5) (2) (1)
FMA3A
0.95 0.95
(3)
(2)
0.3

2.9
1.9
(4)
(1)

(5)

1.6
2.8
0.15

1.1
0.8
0to0.1

0.3to0.6
Each lead has same dimensions
ROHM : SMT5
EIAJ : SC-74A

Abbreviated symbol : A3

Rev.A 1/2
EMA3 / UMA3N / FMA3A
Transistors

Absolute maximum ratings (Ta=25