
MITSUBISHI Nch POWER MOSFET
FS50KM-3
HIGH-SPEED SWITCHING USE
FS50KM-3
¡10V DRIVE
DSS ............................................................................... 150V
¡V 
¡r
DS (ON) (MAX) ..............................................................31mΩ
D ......................................................................................... 50A
¡I 
¡Integrated Fast Recovery Diode (TYP.)
iso ................................................................................ 2000V
¡V
.......... 130ns
OUTLINE DRAWING Dimensions in mm
10 ± 0.3 2.8 ± 0.2
3 ± 0.33.6 ± 0.3
15 ± 0.314 ± 0.5
123
w
q
e
6.5 ± 0.3
f 3.2 ± 0.2
1.1 ± 0.2
1.1 ± 0.2
0.75 ± 0.15
2.54 ± 0.252.54 ± 0.25
2.6 ± 0.2
q GATE 
w DRAIN 
e SOURCE
E
0.75 ± 0.15
4.5 ± 0.2
TO-220FN
APPLICATION
Motor control, Lamp control, Solenoid control 
DC-DC converter, etc.
MAXIMUM RATINGS (Tc = 25°C)
Symbol 
VDSS 
VGSS 
ID 
IDM 
IDA 
IS 
ISM 
PD 
Tch 
Tstg 
Viso
—
Drain-source voltage 
Gate-source voltage 
Drain current 
Drain current (Pulsed) 
Avalanche drain current (Pulsed) 
Source current 
Source current (Pulsed) 
Maximum power dissipation 
Channel temperature 
Storage temperature 
Isolation voltage 
Weight
Parameter Conditions Ratings Unit
GS = 0V
V
DS = 0V
V
L = 100µH
AC for 1minute, Terminal to case 
Typical value
150 
±20
50
200
50 
50
200
35 
–55 ~ +150 
–55 ~ +150
2000
2.0
V 
V 
A 
A 
A 
A 
A
W
°C 
°C
V 
g
Feb.1999
 

ELECTRICAL CHARACTERISTICS (Tch = 25°C)
Symbol UnitParameter Test conditions
D = 1mA, VGS = 0V
V 
(BR) DSS
IGSS 
IDSS 
VGS (th) 
rDS (ON) 
VDS (ON) 
yfs
iss
C 
Coss 
Crss 
td (on) 
tr 
td (off) 
tf 
VSD 
Rth (ch-c) 
trr
Drain-source breakdown voltage 
Gate-source leakage current 
Drain-source leakage current 
Gate-source threshold voltage 
Drain-source on-state resistance 
Drain-source on-state voltage 
Forward transfer admittance 
Input capacitance 
Output capacitance 
Reverse transfer capacitance 
Turn-on delay time 
Rise time 
Turn-off delay time 
Fall time 
Source-drain voltage 
Thermal resistance 
Reverse recovery time
I
GS = ±20V, VDS = 0V
V
DS = 150V, VGS = 0V
V
D = 1mA, VDS = 10V
I
D = 25A, VGS = 10V
I
D = 25A, VGS = 10V
I
D = 25A, VDS = 10V
I
V
DS = 10V, VGS = 0V, f = 1MHz
DD = 80V, ID = 25A, VGS = 10V, RGEN = RGS = 50Ω
V
I
S = 25A, VGS = 0V
Channel to case
S = 50A, dis/dt = –100A/µs
I
MITSUBISHI Nch POWER MOSFET
FS50KM-3
HIGH-SPEED SWITCHING USE
Limits
Min. Typ. Max.
150
— 
—
2.0 
— 
— 
— 
— 
— 
— 
— 
— 
— 
— 
— 
— 
—
— 
— 
—
3.0 
24
0.600 
55
6540
860 
360
95
155 
380 
180
1.0 
—
130
—
±0.1
0.1
4.0 
31
0.775 
— 
— 
— 
— 
— 
— 
— 
—
1.5
3.57 
—
V
µA
mA
V
mΩ
V
S 
pF 
pF 
pF 
ns 
ns 
ns 
ns
V
°C/W
ns
PERFORMANCE CURVES
POWER DISSIPATION DERATING CURVE
50
 (W)
40
D
30
20
10
POWER DISSIPATION  P
0
0 20050 100 150
CASE TEMPERATURE  T
OUTPUT CHARACTERISTICS
VGS = 20V
80
60
 (A)
D
100
(TYPICAL)
8V
10V
7V
TC = 25°C 
Pulse Test
C
 (°C)
6V
MAXIMUM SAFE OPERATING AREA
3 
2
2
10
7
 (A)
5
D
3 
2
1
10
7 
5
3 
2
DRAIN CURRENT  I
0
10
7
TC = 25°C
5
Single Pulse
3
0
210
10
1
357 2 10
357 2 10
DRAIN-SOURCE VOLTAGE  V
OUTPUT CHARACTERISTICS
(TYPICAL)
7V
10V
6V
 (A)
D
50
40
VGS = 20V
30
DC
tw = 10ms
100ms
1ms
10ms 
100ms
2
357
TC = 25°C 
Pulse Test
DS
3
 (V)
5V
40
20
DRAIN CURRENT  I
0
0 1.0 2.0 3.0 4.0 5.0
DRAIN-SOURCE VOLTAGE  VDS (V)
PD = 35W
5V
20
10
DRAIN CURRENT  I
0
0 0.4 0.8 1.2 1.6 2.0
DRAIN-SOURCE VOLTAGE  VDS (V)
PD = 35W
4V
Feb.1999
 

MITSUBISHI Nch POWER MOSFET
FS50KM-3
HIGH-SPEED SWITCHING USE
ON-STATE VOLTAGE VS.
GATE-SOURCE VOLTAGE
(TYPICAL)
2.0
1.6
 (V)
1.2
DS (ON)
0.8
VOLTAGE  V
0.4
DRAIN-SOURCE ON-STATE
TC = 25°C 
Pulse Test
0
0 4 8 12 16 20
GATE-SOURCE VOLTAGE  V
TRANSFER CHARACTERISTICS
(TYPICAL)
100
80
 (A)
D
60
40
20
DRAIN CURRENT  I
ID = 100A
80A
50A
20A
GS
 (V)
TC = 25°C
DS
 = 10V
V 
Pulse Test
ON-STATE RESISTANCE VS.
DRAIN CURRENT
(TYPICAL)
40
TC = 25°C 
Pulse Test
32
 (mΩ)
24
DS (ON)
16
8
DRAIN-SOURCE ON-STATE
RESISTANCE  r
0
0
10
357 2 10
357 2 10
DRAIN CURRENT  I
FORWARD TRANSFER ADMITTANCE
VS.DRAIN CURRENT
(TYPICAL)
2
10
VDS = 10V
7
Pulse Test
5 
4
(S)
3
fs
2
1
10
7 
5
4 
3
ADMITTANCE  y
FORWARD TRANSFER
2
VGS = 10V
1
357 23
D
 (A)
TC = 25°C 
75°C 
125°C
20V
2
0
0 4 8 12 16 20
GATE-SOURCE VOLTAGE  V
DRAIN-SOURCE VOLTAGE
2
4
10
7 
5
3 
2
3
10
7 
5
3 
2
CAPACITANCE
Ciss, Coss, Crss (pF)
2
10
7
Tch = 25°C
5
f = 1MH
3
VGS = 0V
2
10
DRAIN-SOURCE VOLTAGE  V
CAPACITANCE VS.
(TYPICAL)
Z
0
210
1
357357 2 10
GS
 (V)
Ciss
Coss 
Crss
2
357 23
DS
 (V)
0
10
0
10
23457 10
DRAIN CURRENT  I
SWITCHING CHARACTERISTICS
(TYPICAL)
3
10
7
t
5 
4
d(off)
3 
2
2
10
7 
5
4 
3
SWITCHING TIME  (ns)
t
f
t
r
t
d(on)
2
1
10
0
10
23457 10
DRAIN CURRENT  ID (A)
1
10
Tch = 25°C 
V 
V 
R
1
10
DD 
GS
GEN
23457
D
 (A)
 = 80V 
 = 10V
 = RGS = 50Ω
23457
2
2
Feb.1999
 

MITSUBISHI Nch POWER MOSFET
FS50KM-3
HIGH-SPEED SWITCHING USE
GATE-SOURCE VOLTAGE
VS.GATE CHARGE
(TYPICAL)
20
Tch = 25°C 
I
D
 (V)
GS
 = 50A
16
VDS = 50V
12
8
80V 
100V
4
GATE-SOURCE VOLTAGE  V
0
0 40 80 120 160 200
g
GATE CHARGE  Q
 (nC)
ON-STATE RESISTANCE VS.
CHANNEL TEMPERATURE
 (t°C)
 (25°C)
DS (ON)
DS (ON)
10
1
VGS = 10V
7
I
5
Pulse Test
4
D
 = 1/2I
(TYPICAL)
D
3 
2
0
10
7 
5
4 
3
2
–1
10
–50 0 50 100 150
DRAIN-SOURCE ON-STATE RESISTANCE  r
DRAIN-SOURCE ON-STATE RESISTANCE  r
CHANNEL TEMPERATURE  Tch (°C)
SOURCE-DRAIN DIODE
FORWARD CHARACTERISTICS
(TYPICAL)
100
TC = 125°C
80
 (A)
S
60
40
20
SOURCE CURRENT  I
0
0 0.4 0.8 1.2 1.6 2.0
SOURCE-DRAIN VOLTAGE  V
THRESHOLD VOLTAGE VS.
CHANNEL TEMPERATURE
(TYPICAL)
5.0
VDS = 10V
D
 = 1mA
I
4.0
 (V)
3.0
GS (th)
2.0
VOLTAGE  V
1.0
GATE-SOURCE THRESHOLD
0
–50 0 50 100 150
CHANNEL TEMPERATURE  Tch (°C)
75°C 
25°C
VGS = 0V 
Pulse Test
SD
 (V)
BREAKDOWN VOLTAGE VS.
 (t°C)
 (25°C)
(BR) DSS
(BR) DSS
1.4
CHANNEL TEMPERATURE
(TYPICAL)
VGS = 0V 
I
D
 = 1mA
1.2
1.0
0.8
0.6
0.4 
–50 0 50 100 150
DRAIN-SOURCE BREAKDOWN VOLTAGE  V 
CHANNEL TEMPERATURE  Tch (°C)
DRAIN-SOURCE BREAKDOWN VOLTAGE  V 
TRANSIENT THERMAL IMPEDANCE
 (°C/W)
1
10
7
(ch–c)
5
D = 1.0
th
3
0.5
2
0
0.2
10
7
0.1
5 
3
0.05
2
0.02
–1
10
7
10
5 
3
2
–2
10
0.01 
Single Pulse
–4
23 57 23 57 23 57 23 57
10
TRANSIENT THERMAL IMPEDANCE  Z
CHARACTERISTICS
–3
10
–2
PULSE WIDTH  t
10
–1
10023 57
w
 (s)
P
tw
D
DM
T
= 
tw
T
10123 57
2
10
Feb.1999