KBU8A - KBU8M
KBU8A-KBU8M, Rev. C2001 Fairchild Semiconductor Corporation
KBU8A - KBU8M
Bridge Rectifiers
Absolute Maximum Ratings* TA = 25°C unless otherwise noted
Electrical Characteristics TA = 25°C unless otherwise noted
Features
•High surge current capability.
•Reliable construction technique.
• Ideal for printed circuit board.
Symbol Parameter Device Units
VF Forward Voltage, per bridge @ 8.0 A 1.0 V
IR Reverse Current, total bridge @ rated VR
TA = 25°C
TA = 100°C
10
500
µA
µA
Symbol
Parameter
Value
Units
PD Power Dissipation 6.9 W
RθJA Thermal Resistance, Junction to Ambient,* per leg 18 °C/W
RθJL Thermal Resistance, Junction to Lead,* per leg 3.0 °C/W
*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
KBU
+
~~
-
Symbol
Parameter
Value
Units
8A 8B 8D 8G 8J 8K 8M
VRRM Maximum Repetitive Reverse Voltage 50 100 200 400 600 800 1000 V
VRMS Maximum RMS Bridge Input Voltage 35 70 140 280 420 560 700 V
VR DC Reverse Voltage (Rated VR) 50 100 200 400 600 800 1000 V
IF(AV) Average Rectified Forward Current, @ TA = 50°C 8.0 A
IFSM Non-repetitive Peak Forward Surge Current 300 A
Tstg Storage Temperature Range -55 to +150 °C
TJ Operating Junction Temperature -55 to +150 °C
Thermal Characteristics
*Device mounted on PCB with 0.375 " (9.5 mm) lead length and 0.5 x 0.5" (13 x 13 mm) copper pads.
KBU8A-KBU8M, Rev. C
KBU8A - KBU8M
2001 Fairchild Semiconductor Corporation
Bridge Rectifiers
(continued)
Typical Characteristics
Ambient Temperature [ºC]
Average Rectified Forward Current, IF [A]
1 2 5 10 20 50 100
0
50
100
150
200
250
300
Number of Cycles at 60Hz
Peak Forward Surge Current, IFSM [A]
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3
0.1
1
10
100
Forward Voltage, VF [V]
Forward Current, IF [A]
Pulse Width = 300µ
µµ
µS
2% Duty Cycle
T = 25 C
º
J
T = 25 C
º
A
0 20406080100120140
0.1
1
10
100
Percent of Rated Peak Reverse Voltage [%]
Reverse Current, IR [mA]
T = 100 C
º
A
T = 25 C
º
A
Figure 1. Forward Current Derating Curve Figure 2. Forward Voltage Characteristics
Figure 3. Non-Repetitive Surge Current Figure 4. Reverse Current vs Reverse Voltage
0 50 100 150
0
2
4
6
8
SINGLE PHASE
HALF WAVE
60Hz
RESISTIVE OR
IND UCTIVE LOAD
LENGTHS
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Definition of Terms
Datasheet Identification Product Status Definition
Advance Information
Preliminary
No Identification Needed
Obsolete
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
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changes at any time without notice in order to improve
design.
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
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that has been discontinued by Fairchild semiconductor.
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