Fairchild SB120, SB1100 service manual
Features
• 1.0 ampere operation at T
with no thermal runaway.
= 75°C
A
• For use in low voltage, high frequency
inverters free wheeling, and polarity
protection applications.
Schottky Rectifiers
SB120 - SB1 100
COLOR BAND DENOTES CATHODE
SB120-SB1100
DO-41
Absolute Maximum Ratings* T
Symbol
V
Maximum Repetitive Reverse Voltage 20 30 40 50 60 80 100 V
RRM
I
Average Rectified Forward Current
F(AV)
I
Non-repetitive Peak Forward Surge Current
FSM
T
stg
TJ Operating Junction Temperature -65 to +125
.375 " lead length @ T
8.3 ms Single Half-Sine-Wave
Storage Temperature Range -65 to +125
Parameter
= 75°C
A
= 25°C unless otherwise noted
A
120 130 140 150 160 180 1100
Value
Units
1.0 A
30 A
C
°
C
°
*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
Thermal Characteristics
Symbol
PD Power Dissipation 1.25 W
R
JA
θ
Thermal Resistance, Junction to Ambient 80
Electrical Characteristics T
Symbol
VF Forward Voltage @ 1.0 A 500 700 850 mV
IR
Irr Maximum Full Load Reverse Current, Full Cycle
C
T
Reverse Current @ rated V
T
= 75°C
T
A
Total Capacitance
V
= 4.0 V, f = 1.0 MHz
R
Parameter
Parameter
R TA
= 25°C unless otherwise noted
A
= 25°C
= 100°C
A
Value
Device
120 130 140 150 160 180 1100
0.5
10
30 mA
110 pF
Units
C/W
°
Units
mA
mA
SB120-SB1100, Rev. C2001 Fairchild Semiconductor Corporation
T ypical Characteristics
[A]
1
F
0.75
SINGLE PHASE
HALF WAVE
0.5
0.25
0
Average Rectified Forward Current, I
Figure 1. Forward Current Derating Curve
60Hz
RESISTIVE OR
INDUCTIVE LOAD
.375" 9. 5mm
LEAD LENGTHS
0 20406080100120140
Lead Temperature [ºC]
Schottky Rectifier
(continued)
20
10
[A]
F
1
Forward Current, I
0.1
Figure 2. Forward Voltage Characteristics
SB120
SB1100
SB150-SB160
º
T = 25 C
J
Pulse Width = 300µµµµS
1% Duty Cycle
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Forward Voltage, VF [V]
SB120-SB1100
30
[A]
FSM
24
18
400
200
[pF]
T
100
80
60
12
6
40
20
Total Capacitance, C
0
Peak Forward Surge Current, I
1246810204060100
10
0.1 0.5 1 5 10 4060 100
Number of Cycles at 60Hz
Figure 3. Non-Repetitive Surge Current
º
T = 25 C
J
Reverse Voltage, VR [V]
Figure 4. Total Capacitance
SB120-SB1100, Rev. C2001 Fairchild Semiconductor Corporation
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