FST19235 - FST19245
A
N 4 Places
C
1
2
3
Schottky Powermod
E
B
L
Q
R
P
F
G
J
M
D
K
1
2
3
Common Cathode
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
1
2
3
A=Common Anode
H
1
2
3
D=Doubler
Notes:
Baseplate: Nickel plated copper;
electrically isolated
Pins: Nickel plated copper
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
Microsemi Catalog
Working Peak
Reverse Voltage
Number
FST19235*
FST19240*
FST19245*
35V
40V
45V
Repetitive Peak
Reverse Voltage
35V
40V
45V
V
RRM
Reverse Energy Tested
35 to 45 Volts
*Add the Suffix A for Common Anode, D for Doubler
ROHS Compliant
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 0.40 Volts
V FM 0.52 Volts
I RM 2A
I RM 10 mA
C 5500 pF
J
T C = 86°C, Square wave, R 0JC = 0.35°C/W
T C = 86°C, Square wave, R 0JC = 0.7°C/W
8.3ms, half sine,T = 150°C
J
I FM = 100A: J = 150°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)
Weight
Mounting Torque
T STG
TJ
R OJC
R OJC
R OCS
-55°C to 150°C
-55°C to 150°C
0.7°C/W
Junction to case
0.35°C/W
Junction to case
0.1°C/W
Case to sink
2.3 ounces (58.5 grams) typical
15-20 inch pounds
www.microsemi.com
January, 2010 - Rev. 2
FST19235 - FST19245
Figure 1
Typical Forward Characteristics - Per Leg
1000
800
600
400
Junction Capacitance - pF
150 C
25 C
Figure 3
Typical Junction Capacitance - Per Leg
100000
60000
40000
20000
10000
6000
4000
2000
1000
0.1
200
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
150
140
130
120
110
100
90
80
0
60
20
40
90 120 180
60
80
DC
20
10
8.0
6.0
4.0
2.0
1.0
0
.2
.4
.6
.8
1.0
1.2
1.4
Instantaneous Forward Voltage - Volts
Maximum Allowable Case Temperature - C
100 120 140 160 180 200
Average Forward Current - Amperes
Figure 5
Maximum Forward Power Dissipation - Per Leg
Maximum Power Dissipation - Watts
105
90
75
60
45
30
15
0
0
20
40
60
80
100 120 140 160 180 200
90
60
120
180
DC
Figure 2
Typical Reverse Characteristics - Per Leg
10000
Typical Reverse Current - mA
1000
100
10
150 C
125 C
75 C
1.0
25 C
.1
0
10
20
30
40
50
Reverse Voltage - Volts
Average Forward Current - Amperes
www.microsemi.com
January, 2010 - Rev. 2
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