KBU4A - KBU4M
KBU4A - KBU4M
Features
High surge current capability.
Reliable construction technique.
Ideal for printed circuit board.
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KBU
Bridge Rectifiers
Absolute Maximum Ratings* T = 25C unless otherwise noted
A
Value
Symbol Parameter Units
4A 4B 4D 4G 4J 4K 4M
V Maximum Repetitive Reverse Voltage 50 100 200 400 600 800 1000 V
RRM
V Maximum RMS Bridge Input Voltage 35 70 140 280 420 560 700 V
RMS
V DC Reverse Voltage (Rated V) 50 100 200 400 600 800 1000 V
R R
I Average Rectified Forward Current, @ T = 50C 4.0 A
F(AV) A
I Non-repetitive Peak Forward Surge Current 200 A
FSM
Storage Temperature Range -55 to +150
T C
stg
T Operating Junction Temperature -55 to +150
C
J
*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
Thermal Characteristics
Symbol Parameter Value Units
P Power Dissipation 6.6 W
D
R Thermal Resistance, Junction to Ambient,* per leg 19 C/W
JA
R Thermal Resistance, Junction to Lead,* per leg 4.0 C/W
JL
*Device mounted on PCB with 0.375 (9.5 mm) lead length and 0.5 x 0.5" (13 x 13 mm) copper pads.
Electrical Characteristics T = 25C unless otherwise noted
A
Symbol Parameter Device Units
V Forward Voltage, per bridge @ 4.0 A 1.0 V
F
I
R Reverse Current, total bridge @ rated V
R
5.0
A
T = 25C
A
500
A
T = 100C
A
2001 Fairchild Semiconductor Corporation KBU4A-KBU4M, Rev. CKBU4A - KBU4M
Bridge Rectifiers
(continued)
Typical Characteristics
5
100
4
10
3
SINGLE PHASE
HALF WAVE
2
60HZ
RESISTIVE OR
1
INDUCTIVE LOAD
1 .375" 9.0 mm LEAD T T = = 2255 C C
A J
LENGTHS
Pulse Width = 300 S
2% Duty Cycle
0
0.1
0 50 100 150
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3
Ambient Temperature [C]
Forward Voltage, V [V]
F
Figure 1. Forward Current Derating Curve
Figure 2. Forward Voltage Characteristics
200
100
175
T = 100 C
A
150
10
125
100
75
1
50
T = 25 C
A
25
0
0.1
12 5 10 20 50 100
0 20 406080 100 120 140
Number of Cycles at 60Hz
Percent of Rated Peak Reverse Voltage [%]
Figure 3. Non-Repetitive Surge Current Figure 4. Reverse Current vs Reverse Voltage
2001 Fairchild Semiconductor Corporation KBU4A-KBU4M, Rev. C
Average Rectified Forward Current, I [A]
Peak Forward Surge Current, I [A]
F
FSM
Reverse Current, I [mA] Forward Current, I [A]
R F