KBU4A thru KBU4M
Document Number 88656
12-Jul-05
Vishay General Semiconductor
www.vishay.com
1
Case Style KBU
~
~
~~
Single-Phase Bridge Rectifier
Major Ratings and Characteristics
IF(AV) 4 A
VRRM 50 V to 1000 V
IFSM 200 A
IR5 µA
VF1.0 V
Tj max. 150 °C
Features
• UL Recognition file number E54214
• Ideal for printed circuit boards
• High surge current capability
• High case dielectric strength of 1500 VRMS
• Solder Dip 260 °C, 40 seconds
Typical Applications
General purpose use in ac-to-dc bridge full wave rec-
tification for Monitor, TV, Printer, SMPS, Adapter,
Audio equipment, and Home Appliances applications
Mechanical Data
Case: KBU
Epoxy meets UL-94V-0 Flammability rating
Terminals: Silver plated (E4 Suffix) leads, solderable
per J-STD-002B and JESD22-B102D
Polarity: As marked on body
Mounting Torque: 10 cm-kg (8.8 inches-lbs) max.
Recommended Torque: 5.7 cm-kg (5 inches-lbs)
Maximum Ratings
Ratings at 25 °C ambient temperature unless otherwise specified.
Electrical Characteristics
Ratings at 25 °C ambient temperature unless otherwise specified.
Parameter Symbols KBU4A KBU4B KBU4D KBU4G KBU4J KBU4K KBU4M Units
Maximum repetitive peak reverse voltage VRRM 50 100 200 400 600 800 1000 V
Maximum RMS voltage VRMS 35 70 140 280 420 560 700 V
Maximum DC blocking voltage VDC 50 100 200 400 600 800 1000 V
Maximum average forward TC = 100 °C(1)
rectified output current at TA = 30 °C(2)
IF(AV) 4.0
4.0
A
Peak forward surge current single sine-wave
superimposed on rated load
IFSM 200 A
Operating junction and storage temperature
range
TJ, TSTG - 50 to + 150 °C
Parameter Test condition Symbols KBU4A KBU4B KBU4D KBU4G KBU4J KBU4K KBU4M Units
Maximum instantaneous
forward drop per leg
at 4.0 A VF 1.0 V
Maximum DC reverse
current at rated DC blocking
voltage per leg
TA = 25 °C
TA = 125 °C
IR 5.0
1.0
µA
mA
www.vishay.com
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Document Number 88656
12-Jul-05
KBU4A thru KBU4M
Vishay General Semiconductor
Thermal Characteristics
Ratings at 25 °C ambient temperature unless otherwise specified.
Notes:
(1) Units mounted on a 2.0 x 1.6 x 0.3" thick (5 x 4 x 0.8 cm.) Al. Plate
(2) Units mounted on P.C.B. with 0.5 x 0.5" (12 x 12 mm) copper pads and 0.375" (9.5 mm) lead length
(3) Recommended mounting position is to bolt down on heatsink with silicone thermal compound for maximum heat transfer with #6 screw
Ratings and Characteristics Curves
(TA = 25 °C unless otherwise noted)
Parameter Symbols KBU4A KBU4B KBU4D KBU4G KBU4J KBU4K KBU4M Units
Typical thermal resistance per leg RθJA
RθJL
19(2)
4.0(1)
°C/W
Figure 1. Derating Curve Output Rectified Current
Figure 2. Maximum Non-Repetitive Peak Forward Surge Current
Per Leg
Temperature (°C)
Average Forward Current (A)
050 100 150
0
1
2
3
4
T
A
, P.C.B. Mounting
0.47" x 0.47" (12 x 12 mm)
Copper Pads
Heatsink Mounting,
T
C,
2.0 x 1.6 x 3.0"
(5.0 x 4.0 x 0.8 cm)
Al. Plate
60 H
Z
Resistive or
Inductive Load
Number of Cycles at 60 HZ
Peak Forward Surge Current (A)
110 100
25
50
75
100
125
150
175
200
T
J
= 150°C
Single Sine-Wave
Figure 3. Typical Forward Characteristics Per Leg
Figure 4. Typical Reverse Leakage Characteristics Per Leg
Instantaneous Forward Voltage (V)
Instantaneous Forward Current (A)
0.6 0.7
100
1.0
1
0.1
0.8 0.9 1.0 1.1 1.2 1.3
T
J
=25°C
Pulse Width = 300 µs
1% Duty Cycle
Percent of Rated Peak Reverse Voltage (%)
Instantaneous Reverse Current ( µA)
020 40 60 80 100
0.01
0.1
1
10
50
T
J
= 100 °C
T
J
=25°C
KBU4A thru KBU4M
Document Number 88656
12-Jul-05
Vishay General Semiconductor
www.vishay.com
3
Package outline dimensions in inches (millimeters)
Figure 5. Typical Junction Capacitance Per Leg
Reverse Voltage (V)
Junction Capacitance, pF
0.1 110 100
0
25
50
75
100
150
TJ=25°C
f = 1.0 MH
Z
Vsig = 50mVp-p
0.160 (4.1)
0.065 (1.7)
0.185 (4.7)
0.895 (22.7)
0.935 (23.7)
0.140 (3.6) 0.165 (4.2)
0.085 (2.2)
0.240 (6.09)
0.200 (5.08)
0.220 (5.6)
0.180 (4.6)
0.075 (1.9) R. TYP.
(2 PLACES)
45o
0.205 (5.2)
0.185 (4.7)
0.052 (1.3)
0.048 (1.2)
0.280 (7.1)
0.260 (6.6)
DIA.
0.760
(19.3)
MAX.
0.700
(17.8)
0.660
(16.8)
1.0
(25.4)
MIN.
0.455 (11.3)
0.405 (10.3)
Case Style KBU
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
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