FST20035 - FST20050
A
B
Baseplate
A=Common Anode
Schottky PowerMod
Dim. Inches
Min.
A
B
C
D
E
F
G
---
1.350
0.700
---
3.140
---
0.280
Millimeters
Min.
---
34.29
17.78
---
79.76
---
7.140
Max.
2.450
1.400
0.800
0.625
3.160
3.650
0.300
Max.
62.23
35.56
20.32
15.88
80.26
92.71
7.670
Notes
C
G
E
F
1/4-20UNC with
Captive Lockwasher
Baseplate
Common Cathode
Dia.
D
Baseplate
D=Doubler
Notes:
Baseplate: Nickel plated
copper
TO-244AB
Schottky Barrier Rectifier
Guard Ring Protection
200 Amperes/35 to 50 Volts
175 C Junction Temperature
Reverse Energy Tested
ROHS Compliant
Microsemi
Catalog Number
FST20035*
FST20040*
FST20045*
FST20050*
Working Peak
Reverse Voltage
35V
40V
45V
50V
Repetitive Peak
Reverse Voltage
35V
40V
45V
50V
*Add Suffix A for Common Anode, D for Doubler
Electrical Characteristics
I F(AV) 200 Amps
Average forward current per pkg
I F(AV) 100 Amps
Average forward current per leg
I FSM 2000 Amps
Maximum surge current per leg
Maximum repetitive reverse current per leg I R(OV) 2 Amps
VFM
Max peak forward voltage per leg
0.80 Volts
VFM
Max peak forward voltage per leg
0.60 Volts
I RM
Max peak reverse current per leg
75 mA
I RM
Max peak reverse current per leg
4.0 mA
CJ
Typical junction capacitance per leg
4600 pF
TC = 143°C, Square wave, R 0JC = 0.25°C/W
TC = 143°C, Square wave, R 0JC = 0.50°C/W
8.3ms, half sine,T J = 175°C
f = 1 KHZ, 25°C, 1µsec square wave
I FM = 200A: J = 25°C*
T
I FM = 200A: J = 175°C*
T
VRRM, TJ = 125°C*
VRRM, TJ = 25°C
VR = 5.0V,TC = 25°C
*Pulse test: Pulse width 300µsec, Duty cycle 2%
Thermal and Mechanical Characteristics
Storage temp range
Operating junction temp range
Max thermal resistance per leg
Max thermal resistance per pkg
Typical thermal resistance (greased)
Terminal Torque
Mounting Base Torque
Weight
T STG
TJ
ROJC
ROJC
ROCS
-55°C to 175°C
-55°C to 175°C
0.05°C/W
Junction to case
0.25°C/W
Junction to case
0.08°C/W
Case to sink
35-50 inch pounds
30-40 inch pounds
3.4 ounces (95 grams) typical
www.microsemi.com
January, 2010 - Rev. 4
FST20035 - FST20050
Figure 1
Typical Forward Characteristics - Per Leg
1000
800
600
Junction Capacitance - pF
400
Figure 3
Typical Junction Capacitance - Per Leg
100,000
60,000
40,000
20,000
10,000
6000
4000
2000
1000
0.1
200
175 C
25 C
100
80
60
40
Instantaneous Forward Current - Amperes
0.5
1.0
5.0
10
50
100
Reverse Voltage - Volts
Figure 4
Forward Current Derating - Per Leg
175
165
155
145
135
125
115
105
60
0
30
90
120
60
180
90
120
DC
150
20
10
8.0
6.0
4.0
2.0
1.0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Instantaneous Forward Voltage - Volts
Maximum Allowable Case Temperature - C
Maximum Power Dissipation - Watts
175 C
Average Forward Current - Amperes
Figure 5
Maximum Forward Power Dissipation - Per Leg
105
90
75
60
45
30
15
0
0
30
60
90
120
150
Average Forward Current - Amperes
60
90
120
180
DC
Figure 2
Typical Reverse Characteristics - Per Leg
1000
Typical Reverse Current - mA
100
10
1.0
0.1
125 C
75 C
25 C
0
10
20
30
40
50
.01
Reverse Voltage - Volts
www.microsemi.com
January, 2010 - Rev. 4
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