MMST918 / PN918
Transistors
1/2
NPN High Frequency Transistor
MMST918 / PN918
Features
1) High current gain-bandwidth product f
T
=600MHz
Package, marking, and packaging specifications
Part No.
MMST918
SMT3
RVX
T146
3000
PN918
TO-92
-
T93
3000
Packaging type
Marking
Code
Basic ordering unit
(pieces)
Absolute maximum ratings (Ta = 25
C)
Parameter
Symbol
V
CBO
V
CEO
V
EBO
I
C
Tj
Tstg
Limits
30
15
3
50
150
-
55 to
+
150
Unit
V
V
V
A
W
W
P
C
0.2
0.310
MMST918
PN918
C
C
Collector-base voltage
Collector-emitter voltage
Emitter-base voltage
Collector current
Collector power
dissipation
Junction temperature
Storage temperature
External dimensions (Unit : mm)
ROHM : SMT3
EIAJ : SC-59
(1) Emitter
(2) Base
(3) Collector
ROHM : TO-92
EIAJ : SC-43
(1) Emitter
(2) Base
(3) Collector
MMST918
PN918
0
0.1
2.8
0.2
1.6
0.3
0.6
1.1
0.8
0.1
0.15
0.4
2.9
0.2
1.9
0.2
0.95 0.95
+
0.2
-
0.1
-
0.1
+
0.2
+
0.1
-
0.06
+
0.1
-
0.05
(2)
(1)
(3)
4.8
0.2
(12.7Min.)
2.5Min.
4.8
0.2
3.7
0.2
5
0.45
2.3
0.5
0.1
-
0.05
+
0.15
2.5
+
0.3
-
0.1
(1)
(2)
(3)
All terminals have same dimensions
Electrical characteristics (Ta = 25
C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
BV
CBO
BV
CEO
BV
EBO
I
CBO
30
15
3.0
-
-
-
-
-
-
-
-
-
-
0.01
1.0
V
V
V
A
A
I
C
=
1.0
A
I
C
=
3.0mA
I
E
=
10
A
V
CB
=
15V
V
CB
=
15V , I
E
=0 , Ta=150
C
V
BE(sat)
-
-
1.0
V
V
CE(sat)
-
-
0.4
V
I
C
/I
B
=
10mA/1mA
I
C
/I
B
=
10mA/1mA
-
h
FE
20
-
-
I
C
=
3.0mA , V
CE
=
1.0V
f
T
Cob
600
-
-
-
-
1.7
MHz
pF
I
C
=
4.0mA , V
CE
=
10V, f
=
100MHz
V
CB
=
10V , I
E
=0 , f
=
140kHz
-
-
3.0
pF
V
CB
=
0 , I
E
=0 , f
=
140kHz
Cib
-
-
2.0
pF
V
EB
=
0.5V , I
C
=0 , f
=
140kHz
NF
-
-
6.0
dB
I
C
=
1.0mA , V
CE
=
6.0V ,RG
=
400
, f
=
60MHz
V
CB
=
12V , I
C
=
6.0mA , f=200MHz
Gpe
15
-
-
dB
Pout
30
-
-
mW
V
CB
=
15V , I
C
=
8.0mA , f=500MHz
V
CB
=
15V , I
C
=
8.0mA , f=500MHz
25
-
-
%
Collector-base breakdown voltage
Collector-emitter breakdown voltage
Emitter-base breakdown voltage
Collector cutoff current
Base-emitter saturation voltage
Collector-emitter saturation voltage
DC current transfer ratio
Transition frequency
Output capacitance
Emitter input capacitance
Noise figure
Power gain
Output power
Collector efficiency
MMST918 / PN918
Transistors
2/2
Electrical characteristic curves
0
10
20
20
0
10
I
B
=0
A
20
A
40
A
60
A
80
A
100
A
120
A
140
A
160
A
180
A
Ta=25
C
COLLECTOR CURRENT : Ic
(mA)
COLLECTOR-EMITTER VOLTAGE : V
CE
(V)
Fig.1 Typical output characteristics
0.1
0.2
0.5
1
2
5
10
20
50 100
100
200
500
1000
10
20
50
DC CURRENT GAIN : h
FE
COLLECTOR CURRENT : Ic
(mA)
Ta
=
25
C
V
CE
=
10V
Fig.2 DC current gain vs.
collector current
0.1 0.2
0.5
1
2
5
10
20
50 100
0.2
0.3
0.1
0
COLLECTOR EMITTER SATURATION VOLTAGE : V
CE(sat)
(V
)
COLLECTOR CURRENT : Ic (mA)
Ta
=
25
C
I
C
/ I
B
=
10
Fig.3 Collector-emitter saturation
voltage vs. collector current
0.1 0.2
0.5
1
2
5
10
20
50
100
0.8
0.6
1.2
1.0
1.8
1.6
1.4
0.4
0.2
0
BASE EMITTER VOLTAGE : V
BE(ON)
(V)
COLLECTOR CURRENT : Ic (mA)
Ta
=
25
C
V
CE
=
10V
Fig.5 Base-emitter 'ON' voltage
vs. collector current
0.1
0.2
0.5
1
2
5
10
20
50 100
1
2
5
10
0.1
0.2
0.5
CAPACITANCE
(pF)
REVERSE BIAS VOLTAGE : V (V)
Ta
=
25
C
f
=
1MHz
Cob
Fig.6 Capacitance vs.
reverse bias voltage
Cib
0.1
0.2
0.5
1
2
5
10
20
50 100
0.8
1.0
1.2
1.4
1.8
1.6
0.2
0.4
0.6
0
BASE EMITTER SATURATION VOLTAGE : V
BE(sat)
(V)
COLLECTOR CURRENT : Ic
(mA)
Ta
=
25
C
I
C
/ I
B
=
10
Fig.4 Base-emitter saturation voltage
vs. collector current
0.1 0.2
0.5
1
2
5
10
20
50
100
5000
2000
1000
500
200
100
50
CURRENT GAIN BANDWIDTH PRODUCT
(MHz
)
COLLECTOR CURRENT : Ic (mA)
Ta
=
25
C
V
CE
=
5V
Fig.7 Current gain bandwidth product
vs. collector current
Appendix
Appendix1-Rev1.1
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
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