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KBU4A - KBU4M
KBU4A-KBU4M, Rev. A
KBU4A - KBU4M
4.0 Ampere Silicon Bridge Rectifiers
Absolute Maximum Ratings*
T
A
= 25C unless otherwise noted
Electrical Characteristics
T
A
= 25C unless otherwise noted
1998 Fairchild Semiconductor Corporation
Features
High surge current capability.
Reliable construction technique.
Ideal for printed circuit board.
Parameter
Device
Units
4A
4B
4D
4G
4J
4K
4M
Peak Repetitive Reverse Voltage
50
100
200
400
600
800
1000
V
Maximum RMS Bridge Input Voltage
35
70
140
280
420
560
700
V
DC Reverse Voltage
(Rated V
R
)
50
100
200
400
600
800
1000
V
Maximum Reverse Leakage,
total bridge @ rated V
R
T
A
= 25
C
T
A
= 100
C
5.0
500
A
A
Maximum Forward Voltage Drop,
per bridge
@ 4.0 A
1.0
V
Symbol
Parameter
Value
Units
I
O
Average Rectified Current
@ T
A
= 50
C
4.0
A
i
f(surge)
Peak Forward Surge Current
200
A
P
D
Total Device Dissipation
Derate above 25
C
6.6
53
W
mW/
C
R
JA
Thermal Resistance, Junction to Ambient,** per leg
19
C/W
R
JL
Thermal Resistance, Junction to Lead,** per leg
4.0
C/W
T
stg
Storage Temperature Range
-55 to +150
C
T
J
Operating Junction Temperature
-55 to +150
C
Dimensions are in: inches (mm)
KBU
*
These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
**
Device mounted on PCB with 0.375 " (9.5 mm) lead length and 0.5 x 0.5" (13 x 13 mm) copper pads.
0.165(4.2)
0.150(3.8)
0.280(7.1)
0.260(6.6)
0.052(1.3)
0.048(1.2)
~
~
+
+
45
0.935(23.7)
0.895(22.7)
0.0760(19.3)
MAX
0.70(17.8)
0.66(16.8)
0.455(11.3)
0.405(10.3)
0.085(2.2)
0.065(1.7)
0.260(6.8)
0.180(4.5)
0.220(5.6)
0.180(4.6)
0.16(4.1)
0.14(3.6)
+
1.0(2.54)
MIN
Discrete POWER & Signal
Technologies
KBU4A - KBU4M
KBU4A-KBU4M, Rev. A
Silicon Bridge Rectifiers
(continued)
Typical Characteristics
Forward Current Derating Curve
0
50
100
150
0
1
2
3
4
5
AMBIENT TEMPERATURE ( C)
FO
RW
AR
D
CU
RR
E
N
T (
A
)
SINGLE PHASE
HALF WAVE
60HZ
RESISTIVE OR
INDUCTIVE LOAD
.375" 9.0 mm LEAD
LENGTHS
Non-Repetitive Surge Current
1
2
5
10
20
50
100
0
25
50
75
100
125
150
175
200
NUMBER OF CYCLES AT 60Hz
F
O
RW
AR
D
S
U
R
G
E
C
U
R
R
E
N
T
(
A
)
Reverse Characteristics
0
20
40
60
80
100
120
140
0.1
1
10
100
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
R
E
VER
SE
C
U
R
R
E
N
T (
A
)
T = 100 C
A
T = 25 C
A
Forward Characteristics
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
0.1
1
10
100
FORWARD VOLTAGE (V)
F
O
R
W
AR
D CU
RR
E
N
T
(
A
)
Pulse Width = 300
S
2% Duty Cycle
T = 25 C
J
T = 25 C
A
KBU (FS PKG Code R7)
KBU Package Dimensions
July 1999, Rev. A
1:1
Scale 1:1 on letter size paper
Dimensions shown below are in:
inches [millimeters]
Part Weight per unit (gram): 8.0
0.165(4.2)
0.150(3.8)
0.280(7.1)
0.260(6.6)
0.052(1.3)
0.048(1.2)
0.185(4.7)
0.165(4.2)
~
~
+
+
45
0.935(23.7)
0.895(22.7)
0.760(19.3)
MAX
0.70(17.8)
0.66(16.8)
0.455(11.3)
0.405(10.3)
0.085(2.2)
0.065(1.7)
0.260(6.8)
0.180(4.5)
0.220(5.6)
0.180(4.6)
0.16(4.1)
0.14(3.6)
+
1.0(2.54)
MIN
TRADEMARKS
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2
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