High-Voltage NPN Transistor
Surface Mount
Maximum Ratings
C ollector-E mitter V oltage
C ollector-B ase V oltage
E mitter-B ase V Oltage
C ollector C urrent-C ontinuous
Symbol
VCEO
VCBO
VEBO
IC
Value
400
450
6.0
Unit
Vdc
Vdc
Vdc
mAdc
300
Rating
Total Device Dissipation FR-5 Board
(1)
T
A
=25 C
Derate above 25 C
Thermal Resistance, Junction to Ambient
Thermal Resistance, Junction to Ambient
Total Device Dissipation
Alumina Substrate,
(2)
T
A
=25 C
Derate above 25 C
Junction and Storage, Temperature
Characteristics
TJ,Tstg
R JA
R JA
PD
PD
Symbol
Max
225
1.8
556
350
2.8
357
-55 to +150
Unit
mW
mW/ C
C/W
mW
mW/ C
C/W
C
Thermal Characteristics
MMBTA44=3D
Device Marking
Characteristics
Symbol
Min
Max
Unit
Electrical Characteristics
Collector-Emitter Breakdown Voltage
(3)
(I
C
=1.0mAdc.I
B
=0)
Collector-Base Breakdown Voltage (I
C
=100 uAdc, I
E
=0)
Emitter-Base Breakdown Voltage (I
E
=10 uAdc, I
C
=0)
Base Cutoff Current (V
CB
=400 Vdc, I
E
=0)
Emitter Cutoff Current VEB=4V, IC=0
V
(BR)CEO
V
(BR)CBO
V
(BR)EBO
IC
BO
I
EBO
100
100
Vdc
Vdc
Vdc
nAdc
nAdc
Off Characteristics
WEITRON
http://www.weitron.com.tw
MMBTA44
1
2
3
BASE
COLLECTOR
EMITTER
SOT-23
(T
A
=25 C Unless Otherwise noted)
400
450
6.0
-
-
-
-
-
1.FR-5=1.0 x 0.75 x 0.062 in.
2.Alumina=0.4 x 0.3 x 0.024 in. 99.5% alumina.
3.Pulse Test:Pulse Width 300 S, Duty Cycle 2.0%.
1
2
3
Current-Gain-Bandwidth Product
(IC= 10 mAdc, VCE= 10 Vdc, f=10MHz)
fT
20
-
MHz
DC Current Gain
(IC= 1.0 mAdc, VCE=10Vdc)
(IC= 10 mAdc, VCE= 10Vdc)
(IC= 50 mAdc, VCE= 10Vdc)
Collector-Emitter Saturation Voltage
(IC= 1.0 mAdc, IB= 0.1 mAdc)
Base-Emitter Saturation Voltage
(IC= 10 mAdc, IB= 1.0 mAdc)
HFE(1)
HFE(2)
HFE(3)
VCE(sat)
VBE(sat)
-
Vdc
Vdc
40
50
45
-
2.00
-
On Characteristics
Electrical Characteristics
(TA=25 C unless otherwise noted) (Countinued)
Characteristics
Symbol
Unit
Min
Max
0.40
0.75
-
-
(3)
(3)
MMBTA44
WE IT R ON
WEITRON
http://www.weitron.com.tw
(IC= 10 mAdc, IB= 1.0 mAdc)
(IC= 50 mAdc, IB= 5.0 mAdc)
(IC= 100 mAdc, VCE= 10Vdc)
HFE(4)
20
.
0.50
0.75
WEITRON
http://www.weitron.com.tw
MMBTA44
A
B
D
E
G
M
L
H
J
T OP V IE W
Dim
A
B
C
D
E
G
H
J
K
L
M
Min
0.35
1.19
2.10
0.85
0.46
1.70
2.70
0.01
0.89
0.30
0.076
Max
0.51
1.40
3.00
1.05
1.00
2.10
3.10
0.13
1.10
0.61
0.25
K
C
SOT-23
SOT-23 Package Outline Dimension
PDF 
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