FST19035 - FST19050
A
N 4 Places
C
1
2
3
Low Vf Schottky Powermod
Dim. Inches
Max.
Min.
A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
1.995
0.300
0.495
0.182
0.990
2.390
1.500
0.120
---
0.240
0.490
0.330
0.175
0.035
0.445
0.890
2.005
0.325
0.505
0.192
1.010
2.410
1.525
0.130
0.400
0.260
0.510
0.350
0.195
0.045
0.455
0.910
E
B
L
Q
R
P
F
G
J
M
D
K
1
2
3
Common Cathode
1
2
3
A=Common Anode
H
Notes:
Baseplate: Nickel plated copper;
electrically isolated
Pins: Nickel plated copper
Microsemi
Catalog
Number
FST19035*
FST19040*
FST19045*
FST19050*
Working Peak
Peak Reverse
Voltage
35V
40V
45V
50V
Repetitive Peak
Peak Reverse
Voltage
35V
40V
45V
50V
1
2
3
D=Doubler
50.67
7.62
12.57
4.62
25.15
60.71
38.10
3.05
---
6.10
12.45
8.38
4.45
0.89
11.30
22.61
Millimeters
Min.
Max. Notes
50.93
8.26
12.83
4.88
Dia.
25.65
61.21
38.70
3.30
10.16
6.60 to Lead C
L
12.95
6.90
Dia.
4.95
1.14
11.56
23.11
TO-249
Guard Ring Protection
Electrically Isolated Base
Schottky Barrier Rectifier
Low Forward Voltage
V
RRM
Reverse Energy Tested
35 to 50 Volts
ROHS Compliant
*Add the Suffix A for Common Anode, D for Doubler
Electrical Characteristics
Average Forward Current per pkg.
Average Forward Current per leg
Maximum Surge Current per leg
Max. Peak Forward Voltage per leg
Max. Peak Forward Voltage per leg
Max. Peak Reverse Current per leg
Max. Peak Reverse Current per leg
Typical Junction Capacitance per leg
I F(AV) 200 Amps
I F(AV) 100 Amps
I FSM 1500 Amps
V FM .55 Volts
V FM .70 Volts
I RM 100 mA
I RM 4 mA
CJ 4800 pF
T C = 136°C, Square wave, R 0JC = 0.35°C/W
T C = 136°C, Square wave, R 0JC = 0.7°C/W
8.3ms, half sine,T = 175°C
J
I FM = 100A: J = 175°C*
T
I FM = 100A, J = 25°C *
T
V RRM, T J = 125°C *
V RRM, T J = 25°C
V R = 5.0V, T J = 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)
Mounting Torque
Weight
T STG
TJ
R OJC
R OJC
R OJC
-55°C to 175°C
-55°C to 175°C
0.7°C/W
Junction to case
0.35°C/W
0.1°C/W
Case to sink
15-20 inch pounds
2.3 ounces (58.5 grams) typical
www.microsemi.com
January, 2010 - Rev. 3
FST19035 - FST19050
Figure 1
Typical Forward Characteristics - Per Leg
10000
8000
6000
Junction Capacitance - pF
4000
Figure 3
Typical Junction Capacitance - Per Leg
100000
60000
40000
20000
10000
6000
4000
2000
1000
0.1
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
0
60
20
40
60
90 120 180 DC
80
100 120 140 160 180 200
2000
1000
800
600
400
Instantaneous Forward Current - Amperes
200
100
80
60
40
20
10
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
25 C
Average Forward Current - Amperes
Figure 5
Maximum Forward Power Dissipation - Per Leg
70
60
50
40
30
20
10
0
0
20
40
60
80
100 120 140 160 180 200
60
120
90
180
DC
Figure 2
Typical Reverse Characteristics - Per Leg
1000
Typical Reverse Current - mA
100
175 C
10
1.0
125 C
0.1
.01
75 C
25 C
0
10
20
30
40
50
Reverse Voltage - Volts
Average Forward Current - Amperes
www.microsemi.com
January, 2010 - Rev. 3
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