Page 1
KBU4A - KBU4M
KBU4A - KBU4M
Discrete POWER & Signal
Technologies
0.935(23.7)
–
0.895(22.7)
+
+
~
0.085(2.2)
0.065(1.7)
45°
0.455(11.3)
~
+
0.405(10.3)
Features
• High surge current capability .
• Reliable construction technique.
0.0760(19.3)
MAX
0.16(4.1)
0.14(3.6)
0.70(17.8)
0.66(16.8)
• Ideal for printed circuit board.
KBU
4.0 Ampere Silicon Bridge Rectifiers
Absolute Maximum Ratings* T
= 25°C unless otherwise noted
A
1.0(2.54)
MIN
0.220(5.6)
0.180(4.6)
Dimensions are in: inches (mm)
0.260(6.8)
0.180(4.5)
0.052(1.3)
0.048(1.2)
Symbol Parameter Value Units
I
O
i
f(surge)
P
D
R
θ
JA
R
θ
JL
T
stg
T
J
Average Rectified Current
@ T
= 50°C
A
4.0 A
Peak Forward Surge Current 200 A
Total Device Dissipation
Derate above 25°C
Thermal Resistance , Junction to Ambient,** per leg 19
Thermal Resistance, Junction to Lead,** per leg 4.0
6.6
53
mW/°C
C/W
°
C/W
°
Storage Temperature Range -55 to +150
Operating Junction Temperature -55 to +150
W
C
°
C
°
*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.
0.280(7.1)
0.260(6.6)
0.165(4.2)
0.150(3.8)
Electrical Characteristics T
= 25°C unless otherwise noted
A
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 Vol tage 35 70 140 280 420 560 700 V
DC Reverse Voltage (Rated VR)
Maximum Reverse Leakage,
total bridge @ rated V
RTA
T
= 25°C
= 100°C
A
Maximum Forward Voltage Drop,
per bridge @ 4.0 A 1.0 V
1998 Fairchild Semiconductor Corporation
50 100 200 400 600 800 1000 V
5.0
500
µ
A
µ
A
KBU4A-KBU4M, Rev. A
Page 2
T ypical Characteristics
KBU4A - KBU4M
Silicon Bridge Rectifiers
(continued)
Forward Current Deratin g Curve
5
4
3
SINGLE PHASE
HALF WAVE
2
60HZ
RESISTIVE OR
INDUCTIVE LOAD
1
.375" 9.0 mm LEAD
FORWAR D CURRENT (A)
LENGTHS
0
0 50 100 150
AMBIENT TEMPERATU RE ( C)
º
Non-Repetitive Surge Current
200
175
150
125
100
75
50
25
FORWAR D SU R GE CUR RE N T (A )
0
12 51020 50100
NUMBER O F CYCLES AT 60 Hz
Forward Charact eristics
100
10
1
º
º
T = 25 C
T = 25 C
J
FORWAR D CURR ENT (A)
0.1
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3
A
Pulse Width = 300µS
2% Duty Cycle
FORWAR D VO LTA GE (V)
Reverse Characteristics
100
T = 100 C
º
µ
10
1
REVERSE CURRENT ( A)
0.1
0 20 40 60 80 100 120 140
PERCENT OF RA TED PEAK REVER SE VO L TAGE (%)
A
T = 25 C
º
A
KBU4A-KBU4M, Rev. A
Page 3
KBU Package Dimensions
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
KBU (FS PKG Code R7)
1:1
Scale 1:1 on letter size paper
Dimensions shown below are in:
inches [millimeters]
Part Weight per unit (gram): 8.0
July 1999, Rev. A
Page 4
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not intended to be an exhaustive list of all such trademarks.
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2
E
CMOS
TM
FACT™
FACT Quiet Series™
®
FAST
FASTr™
GTO™
HiSeC™
ISOPLANAR™
MICROWIRE™
POP™
PowerTrench
QFET™
QS™
Quiet Series™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
TinyLogic™
UHC™
VCX™
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OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT
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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROV AL OF FAIRCHILD SEMICONDUCTOR CORPORA TION.
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body, or (b) support or sustain life, or (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in significant injury to the
user.
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
PRODUCT STA TUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information
Preliminary
No Identification Needed
Obsolete
Formative or
In Design
First Production
Full Production
Not In Production
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.
Fairchild Semiconductor reserves the right to make
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.
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
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