EMD28
Transistors
General purpose transistor
(isolated transistors)
EMD28
DTB543X
and DTC144E
A are housed independently in a EMT6 package.
Applications
DC / DC converter
Motor driver
External dimensions
(Unit : mm)
EMT6
Features
1) DTr
1
: PNP digital transistor
DTr
2
: NPN digital transistor
2) Mounting possible with EMT3 automatic mounting
machines.
1pin mark
1.6
1.0
0.5 0.5
(6) (5) (4)
0.5
1.6
1.2
(1) (2) (3)
0.22
0.13
Structure
PNP / NPN Silicon epitaxial planar digital transistor
ROHM : EMT6
Each lead has same dimensions
Abbreviated symbol : D28
The following characteristics apply to both DTr1 and
DTr2.
Equivalent circuit
EMD28
(6)
(5)
R1
R2
DTr2
DTr1
R2
DTr
1
: R
1
/R
2
=4.7kΩ/10kΩ
DTr
2
: R
1
/R
2
=47kΩ/47kΩ
(4)
R1
(2)
(3)
(1)
Packaging specifications
Type
EMD28
Package
EMT6
Marking
D28
Code
T2R
Basic ordering unit (pieces)
8000
1/5
EMD28
Transistors
Absolute maximum ratings
(Ta=25°C)
DTr1
Parameter
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
Symbol
V
CC
V
IN
I
C (MAX.)
P
d
Tj
Tstg
DTr1
−12
−12
to
+7
−500
120
150
−55
to
+150
Unit
V
V
mA
mW
°C
°C
∗
∗
Each terminal mounted on a recommended.
DTr2
Parameter
Supply voltage
Input voltage
Output current
Power dissipation
Junction temperature
Storage temperature
Symbol
V
CC
V
IN
I
O
I
C (MAX.)
P
d
Tj
Tstg
DTr2
50
−10
to
+40
30
100
120
150
−55
to
+150
mW
°C
°C
Unit
V
V
mA
∗
∗
Each terminal mounted on a recommended.
DTr1/Tr2
Parameter
Power dissipation
Storage temperature
Symbol
P
d
Tstg
Limits
150(TOTAL)
−55
to
+125
Unit
mW
∗
°C
∗
Each terminal mounted on a recommended.
2/5
EMD28
Transistors
Electrical characteristics
(Ta=25°C)
DTr1
Parameter
Input voltage
Output voltage
Input current
Output current
DC current gain
Transition frequency
Input resistance
Resistance ratio
Symbol
Vl
(off)
VI
(on)
Vo
(on)
I
I
I
O(off)
G
I
f
T
R
1
R
2
/R
1
Min.
−
−2.5
−
−
−
140
−
3.29
1.7
Typ.
−
−
−70
−
−
−
260
4.7
2.1
Max.
−0.3
−
−300
−1.8
−0.5
−
−
6.11
2.6
Unit
V
V
mV
mA
µA
−
MHz
kΩ
−
Conditions
V
CC
= −5V
/ Io=
−100uA
V
O
= −0.3V
/ Io=
−20mA
I
O
= −100mA,
I
I
= −5mA
V
I
= −5V
V
CC
= −12V
/ V
I
=0V
V
O
= −2V
/ Io=
−100mA
V
CE
= −10V
/ I
E
=5mA,
f=100MHz
−
−
∗
∗
Characteristics of built-in transistor.
DTr2
Parameter
Input voltage
Output voltage
Input current
Output current
DC current gain
Transition frequency
Input resistance
Resistance ratio
Symbol
Vl
(off)
VI
(on)
Vo
(on)
I
I
I
O(off)
G
I
f
T
R
1
R
2
/R
1
Min.
−
3
−
−
−
68
−
32.9
0.8
Typ.
−
−
100
−
−
−
250
47
1
Max.
0.5
−
300
0.18
0.5
−
−
61.1
1.2
Unit
V
V
mV
mA
µA
−
MHz
kΩ
−
Conditions
V
CC
=5V
/ Io=100uA
V
O
=0.3V
/ Io=2mA
I
O
=10mA,
I
I
=0.5mA
V
I
=5V
V
CC
=50V
/ V
I
=0V
V
O
=5V
/ Io=5mA
V
CE
=10V
/ I
E
= −5mA,
f=100MHz
−
−
∗
∗
Characteristics of built-in transistor.
3/5
EMD28
Transistors
Electrical characteristic curves
DTr1
1000
INPUT VOLTAGE : V
I
(on) [ V ]
V
CC
= 5 [V]
100
V
O
= 0.2V
100
INPUT VOLTAGE : V
I
(on) [ V ]
V
O
= 0.3V
OUTPUT CURRENT : I
O
[
μ
A]
[ at -40℃ ]
100
10
[ at 25℃ ]
[ at 100℃ ]
10
[ at -40℃ ]
10
[ at 25℃ ]
[ at 100℃ ]
1
1
[ at -40℃ ]
[ at 25℃ ]
[ at 100℃ ]
0.1
1
0
0.5
1
1.5
INPUT VOLTAGE : V
I
(off) [ V ]
0.1
1
10
100
1000
1
10
100
1000
Fig.1 Output current vs. input voltage
(OFF characteristics)
Fig.2 Input voltage vs. output current
(ON characteristics) I
OUTPUT CURRENT : I
O
[mA]
Fig3 Input voltage vs. output current
(ON characteristics) II
OUTPUT CURRENT : I
O
[mA]
1
OUTPUT VOLTAGE : V
O
(on) [ V ]
1
I
O
/I
I
= 20
OUTPUT VOLTAGE : V
O
(on) [ V ]
1000
I
O
/I
I
= 50
DC CURRENT GAIN : G
I
Vo=2V
[ at 100℃ ]
[ at 25℃ ]
[ at -40℃ ]
100
[ at 100℃ ]
[ at 25℃ ]
[ at -40℃ ]
0.1
[ at 100℃ ]
[ at 25℃ ]
[ at -40℃ ]
0.1
10
0.01
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
0.01
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
1
1
10
100
1000
OUTPUT CURRENT : I
O
[mA]
Fig.4 Output voltage vs. output current I
Fig.5 Output voltage vs. output current II
Fig.6 DC current gain vs. output curren
4/5
EMD28
Transistors
DTr2
10m
5m
V
CC
=5V
100
50
V
O
=0.3V
1
500m
l
O
/l
I
=20
Ta=100˚C
25˚C
−40˚C
OUTPUT CURRENT : Io
(A)
500µ
200µ
100µ
50µ
20µ
10µ
5µ
2µ
1µ
0
Ta=100˚C
25˚C
−40˚C
INPUT VOLTAGE : V
I (on)
(V)
2m
1m
OUTPUT VOLTAGE : V
O (on)
(V)
20
10
5
2
1
500m
200m
Ta=−40˚C
25˚C
100˚C
200m
100m
50m
20m
10m
5m
2m
0.5
1
1.5
2
2.5
3
100m
100µ 200µ
500µ 1m
2m
5m 10m 20m 50m 100m
1m
100µ 200µ
500µ 1m
2m
5m 10m 20m 50m 100m
INPUT VOLTAGE : V
I (off)
(V)
OUTPUT CURRENT : I
O
(A)
OUTPUT CURRENT : I
O
(A)
Fig.7 Output current vs. input voltage
(OFF characteristics)
Fig.8 Input voltage vs. output current
(ON characteristics)
Fig.9 Output voltage vs. output
current
1k
500
DC CURRENT GAIN : G
I
V
O
=5V
Ta=100˚C
25˚C
−40˚C
200
100
50
20
10
5
2
1
100µ 200µ 500µ1m 2m
5m 10m 20m 50m100m
OUTPUT CURRENT : I
O
(A)
Fig.10 DC current gain vs. output
current
5/5
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