EMD28
Transistors
1/5
General purpose transistor
(isolated transistors)
EMD28
DTB543X and DTC144E A are housed independently in a EMT6 package.
Applications
DC / DC converter
Motor driver
Features
1) DTr
1
: PNP digital transistor
DTr
2
: NPN digital transistor
2) Mounting possible with EMT3 automatic mounting
machines.
Structure
PNP / NPN Silicon epitaxial planar digital transistor
The following characteristics apply to both DTr1 and
DTr2.
External dimensions (Unit : mm)
Abbreviated symbol : D28
Each lead has same dimensions
ROHM : EMT6
EMT6
0.22
1.2
1.6
(1) (2)
(5)
(3)
(6)
(4)
0.13
0.5
0.5
0.5
1.0
1.6
1pin mark
Equivalent circuit
EMD28
DTr2
DTr1
(3)
(2)
(1)
(4)
(5)
(6)
R1
R1
R2
R2
DTr
1
: R
1
/R
2
=4.7k
/10k
DTr
2
: R
1
/R
2
=47k
/47k
Packaging specifications
Type
EMD28
EMT6
D28
T2R
8000
Package
Marking
Code
Basic ordering unit (pieces)
EMD28
Transistors
2/5
Absolute maximum ratings (Ta=25
C)
DTr1
Supply voltage
Input voltage
Output current
Power dissipation
Storage temperature
Each terminal mounted on a recommended.
Parameter
Symbol
DTr1
Unit
V
CC
-
12
V
-
12 to
+
7
V
V
IN
mA
I
C (MAX.)
Tstg
-
55 to
+
150
C
Junction temperature
Tj
150
C
P
d
-
500
120
mW
DTr2
Supply voltage
Input voltage
Output current
Power dissipation
Storage temperature
Each terminal mounted on a recommended.
Parameter
Symbol
DTr2
Unit
V
CC
50
V
-
10 to
+
40
V
V
IN
mA
I
C (MAX.)
Tstg
-
55 to
+
150
C
Junction temperature
Tj
150
C
P
d
100
I
O
30
120
mW
DTr1/Tr2
Power dissipation
Storage temperature
Each terminal mounted on a recommended.
Parameter
Symbol
Limits
Unit
P
d
150(TOTAL)
mW
-
55 to
+
125
C
Tstg
EMD28
Transistors
3/5
Electrical characteristics (Ta=25
C)
DTr1
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Resistance ratio
R
2
/R
1
1.7
2.1
2.6
-
-
-
Vl
(off)
-
-
-
0.3
V
V
CC
= -
5V / Io
= -
100uA
Output voltage
Vo
(on)
-
-
70
-
300
mV
I
O
= -
100mA, I
I
= -
5mA
Input voltage
I
I
-
-
-
1.8
mA
V
I
= -
5V
Input current
I
O(off)
-
-
-
0.5
V
CC
= -
12V / V
I
=
0V
Output current
G
I
140
-
-
V
O
= -
2V / Io
= -
100mA
DC current gain
f
T
-
-
MHz
V
CE
= -
10V / I
E
=
5mA, f
=
100MHz
Transition frequency
R
1
3.29
4.7
6.11
k
Input resistance
260
A
-
VI
(on)
-
2.5
-
-
V
V
O
= -
0.3V / Io
= -
20mA
Characteristics of built-in transistor.
DTr2
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Resistance ratio
R
2
/R
1
0.8
1
1.2
-
-
-
Vl
(off)
-
-
0.5
V
V
CC
=
5V / Io
=
100uA
Output voltage
Vo
(on)
-
100
300
mV
I
O
=
10mA, I
I
=
0.5mA
Input voltage
I
I
-
-
0.18
mA
V
I
=
5V
Input current
I
O(off)
-
-
0.5
V
CC
=
50V / V
I
=
0V
Output current
G
I
68
-
-
V
O
=
5V / Io
=
5mA
DC current gain
f
T
-
-
MHz
V
CE
=
10V / I
E
= -
5mA, f
=
100MHz
Transition frequency
R
1
32.9
47
61.1
k
Input resistance
250
A
-
VI
(on)
3
-
-
V
V
O
=
0.3V / Io
=
2mA
Characteristics of built-in transistor.
EMD28
Transistors
4/5
Electrical characteristic curves
DTr1
1
10
100
1000
0
0.5
1
1
INPUT VOLTAGE : V
I
(off) [ V ]
O
.5
0.1
1
10
100
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
I
N
PUT VO
LTAG
E
:
V
I
(o
n
)
[ V
]
V
O
= 0.2V
0.1
1
10
100
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
I
N
PUT VOLTAGE :
V
I
(o
n
)
[
V
]
V
O
= 0.3V
[ at -40 ]
[ at 25 ]
[ at 100 ]
[ at -40 ]
[ at 25 ]
[ at 100 ]
Fig.2 Input voltage vs. output current
(ON characteristics) I
Fig3 Input voltage vs. output current
(ON characteristics) II
V
CC
= 5 [V]
[ at -40 ]
[ at 25 ]
[ at 100 ]
Fig.1 Output current vs. input voltage
(OFF characteristics)
A]
:
I
[
CURRE
NT
O
U
T
P
UT
0.01
0.1
1
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
I
O
/I
I
= 20
0.01
0.1
1
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
OU
T
P
U
T
V
O
L
T
A
GE
:
V
O
(on)
[
V
]
I
O
/I
I
= 50
[ at -40 ]
[ at 25 ]
[ at 100 ]
[ at -40 ]
[ at 25 ]
[ at 100 ]
Fig.4 Output voltage vs. output current I
Fig.5 Output voltage vs. output current II
1
10
100
1000
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
DC
CU
RRE
NT
GAI
N
:
G
I
[ at -40 ]
[ at 25 ]
[ at 100 ]
Vo=2V
Fig.6 DC current gain vs. output curren
[ V
]
(o
n
)
O
V
OUTPUT VOLTAGE :
EMD28
Transistors
5/5
DTr2
INPUT VOLTAGE : V
I (off)
(V)
OUTPUT CURRENT : Io
(A)
0
3
10m
1
2m
5m
1m
200
500
100
20
50
10
2
5
0.5
1
1.5
2
2.5
V
CC
=5V
Ta=100C
25C
-
40C
Fig.7 Output current vs. input voltage
(OFF characteristics)
INPUT VOLTAGE : V
I (on)
(V)
OUTPUT CURRENT : I
O
(A)
100
200
500
1m
2m
5m 10m 20m
50m 100m
100
50
20
10
5
2
1
500m
200m
100m
V
O
=0.3V
Ta=
-
40C
25C
100C
Fig.8 Input voltage vs. output current
(ON characteristics)
OUTPUT CURRENT : I
O
(A)
OUTPUT VOLTAGE : V
O (on)
(V)
100
200
500
1m
2m
5m 10m 20m
50m 100m
1
500m
200m
100m
50m
20m
10m
5m
2m
1m
l
O
/l
I
=20
Ta=100C
25C
-
40C
Fig.9 Output voltage vs. output
current
OUTPUT CURRENT : I
O
(A)
DC CURRENT GAIN : G
I
100
200
500
1m
2m
5m 10m 20m 50m100m
1k
500
200
100
50
20
10
5
2
1
V
O
=5V
Ta=100C
25C
-
40C
Fig.10 DC current gain vs. output
current
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