DS30175 Rev. 3 - 2
1 of 2
MMSTA42
www.diodes.com
MMSTA42
NPN SMALL SIGNAL SURFACE MOUNT TRANSISTOR
Epitaxial Planar Die Construction
Complementary PNP Type Available
(MMSTA92)
Ideal for Medium Power Amplification and
Switching
Ultra-Small Surface Mount Package
Features
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
A
M
J
L
E
D
B C
H
K
G
B
E
C
Mechanical Data
Case: SOT-323, Molded Plastic
Case Material - UL Flammability Rating 94V-0
Moisture sensitivity: Level 1 per J-STD-020A
Terminals: Solderable per MIL-STD-202,
Method 208
Terminal Connections: See Diagram
Marking (See Page 2): K3M
Ordering & Date Code Information: See Page 2
Weight: 0.006 grams (approx.)
Characteristic
Symbol
MMSTA42
Unit
Collector-Base Voltage
V
CBO
300
V
Collector-Emitter Voltage
V
CEO
300
V
Emitter-Base Voltage
V
EBO
6.0
V
Collector Current (Note 1)
I
C
200
mA
Power Dissipation (Note 1)
P
d
200
mW
Thermal Resistance, Junction to Ambient (Note 1)
R
qJA
625
C/W
Operating and Storage and Temperature Range
T
j
, T
STG
-55 to +150
C
SOT-323
Dim
Min
Max
A
0.25
0.40
B
1.15
1.35
C
2.00
2.20
D
0.65 Nominal
E
0.30
0.40
G
1.20
1.40
H
1.80
2.20
J
0.0
0.10
K
0.90
1.00
L
0.25
0.40
M
0.10
0.18
a
0
8
All Dimensions in mm
Note:
1. Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch; pad layout as shown on Diodes Inc. suggested pad layout
document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
E
B
C
DS30175 Rev. 3-2
2 of 2
MMSTA42
www.diodes.com
Characteristic
Symbol
Min
Max
Unit
Test Condition
OFF CHARACTERISTICS (Note 2)
Collector-Base Breakdown Voltage
V
(BR)CBO
300
V
I
C
= 100
mA, I
E
= 0
Collector-Emitter Breakdown Voltage
V
(BR)CEO
300
V
I
C
= 1.0mA, I
B
= 0
Emitter-Base Breakdown Voltage
V
(BR)EBO
6.0
V
I
E
= 100
mA, I
C
= 0
Collector Cutoff Current
I
CBO
100
nA
V
CB
= 200V, I
E
= 0
Collector Cutoff Current
I
EBO
100
nA
V
CE
= 6.0V, I
C
= 0
ON CHARACTERISTICS (Note 2)
DC Current Gain
h
FE
25
40
40
I
C
= 1.0mA, V
CE
= 10V
I
C
= 10mA, V
CE
= 10V
I
C
= 30mA, V
CE
= 10V
Collector-Emitter Saturation Voltage
V
CE(SAT)
0.5
V
I
C
= 20mA, I
B
= 2.0mA
Base- Emitter Saturation Voltage
V
BE(SAT)
0.9
V
I
C
= 20mA, I
B
= 2.0mA
SMALL SIGNAL CHARACTERISTICS
Output Capacitance
C
cb
3.0
pF
V
CB
= 20V, f = 1.0MHz, I
E
= 0
Current Gain-Bandwidth Product
f
T
50
MHz
V
CE
= 20V, I
C
= 10mA,
f = 100MHz
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Ordering Information
(Note 3)
Device
Packaging
Shipping
MMSTA42-7
SOT-323
3000/Tape & Reel
Notes:
2. Short duration test pulse used to minimize self-heating effect.
3. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
K3M
YM
K3M = Product Type Marking Code
YM = Date Code Marking
Y = Year ex: N = 2002
M = Month ex: 9 = September
Date Code Key
Year
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
Code
J
K
L
M
N
P
R
S
T
U
V
W
Month
Jan
Feb
March
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Code
1
2
3
4
5
6
7
8
9
O
N
D
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