Discr ete P OWER & Sign a l
Tech n ologies
KBU8A - KBU8M
0.935(23.7)
0.280(7.1)
0.895(22.7)
0.260(6.6)
0.16(4.1)
0.14(3.6)
0.085(2.2)
0.065(1.7)
Features
45°
+
0.70(17.8)
+
0.66(16.8)
• High surge current capability.
• Reliable construction technique.
• Ideal for printed circuit board.
0.0760(19.3)
MAX
0.455(11.3)
0.405(10.3)
~
–
~
+
0.165(4.2)
0.150(3.8)
1.0(2.54)
MIN
KBU
0.260(6.8)
0.180(4.5)
0.220(5.6)
0.180(4.6)
0.052(1.3)
0.048(1.2)
8.0 Ampere Silicon Bridge Rectifiers
Dimensions are in: inches (mm)
Absolute Maximum Ratings*
TA = 25°C unless otherwise noted
Symbol
Parameter
Value
Units
IO
Average Rectified Current
8.0
A
@ T = 50 C
°
A
Peak Forward Surge Current
300
6.9
A
if(surge)
PD
Total Device Dissipation
W
55
Derate above 25 C
mW/ C
°
°
Thermal Resistance, Junction to Ambient,** per leg
Thermal Resistance, Junction to Lead,** per leg
Storage Temperature Range
18
Rθ
C/W
°
JA
3.0
Rθ
C/W
°
JL
-55 to +150
-55 to +150
C
C
°
Tstg
TJ
Operating Junction Temperature
°
*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.
Electrical Characteristics
TA = 25°C unless otherwise noted
Parameter
Device
Units
8A
50
35
50
8B
100
70
8D
8G
400
280
400
8J
8K
8M
Peak Repetitive Reverse Voltage
200
140
200
600
420
600
800
560
800
1000
700
V
V
V
Maximum RMS Bridge Input Voltage
100
1000
DC Reverse Voltage
Maximum Reverse Leakage,
total bridge @ rated VR T = 25 C
(Rated VR)
10
500
A
A
µ
µ
°
A
T = 100 C
A
°
Maximum Forward Voltage Drop,
per bridge
@ 8.0 A
1.0
V
KBU8A-KBU8M, Rev.
A
1999 Fairchild Semiconductor Corporation