KBU8A, KBU8B, KBU8D, KBU8G, KBU8J, KBU8K, KBU8M
www.vishay.com Vishay General Semiconductor
Revision: 14-May-14 1Document Number: 88658
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Single-Phase Bridge Rectifier
FEATURES
UL recognition, file number E54214
Ideal for printed circuit boards
High surge current capability
High case dielectric strength of 1500 VRMS
Solder dip 275 °C max. 10 s, per JESD 22-B106
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
TYPICAL APPLICATIONS
General purpose use in AC/DC bridge full wave rectification
for monitor, TV, printer, SMPS, adapter, audio equipment,
and home appliances applications.
MECHANICAL DATA
Case: KBU
Molding compound meets UL 94 V-0 flammability rating
Base P/N-E4 - RoHS-compliant, commercial grade
Terminals: Silver plated leads, solderable per
J-STD-002 and JESD22-B102
Polarity: As marked on body
Mounting Torque: 10 cm-kg (8.8 inches-lbs) max.
Recommended Torque: 5.7 cm-kg (5 inches-lbs)
Notes
(1) Recommended mounting position is to bolt down on heatsink with silicone thermal compound for maximum heat transfer with #6 screw
(2) Units mounted in free air, no heatsink, PCB at 0.375" (9.5 mm) lead length with 0.5" x 0.5" (12 mm x 12 mm) copper pads
(3) Units mounted on a 3.0" x 3.0" x 0.11" thick (7.5 cm x 7.5 cm x 0.3 cm) aluminum plate heatsink
PRIMARY CHARACTERISTICS
Package KBU
IF(AV) 8 A
VRRM 50 V, 100 V, 200 V, 400 V, 600 V,
800 V, 1000 V
IFSM 300 A
IR10 μA
VF at IF = 8 A 1.0 V
TJ max. 150 °C
Diode variations In-Line
Case Style KBU
~~
~
~
e4
MAXIMUM RATINGS (TA = 25 °C unless otherwise noted)
PARAMETER SYMBOL KBU8A KBU8B KBU8D KBU8G KBU8J KBU8K KBU8M UNIT
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
rectified output current at
TC = 100 °C (1)(3)
IF(AV) 8.0 A
TA = 40 °C (2) 6.0
Peak forward surge current single sine-wave
superimposed on rated load IFSM 300 A
Operating junction and storage temperature range TJ, TSTG - 50 to + 150 °C
ELECTRICAL CHARACTERISTICS (TA = 25 °C unless otherwise noted)
PARAMETER TEST CONDITIONS SYMBOL KBU8A KBU8B KBU8D KBU8G KBU8J KBU8K KBU8M UNIT
Maximum instantaneous
forward drop per diode IF = 8.0 A VF 1.0 V
Maximum DC reverse
current at rated DC blocking
voltage per diode
TA = 25 °C
IR
10 μA
TA = 125 °C 1.0 mA
KBU8A, KBU8B, KBU8D, KBU8G, KBU8J, KBU8K, KBU8M
www.vishay.com Vishay General Semiconductor
Revision: 14-May-14 2Document Number: 88658
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Notes
(1) Units mounted in free air, no heatsink, PCB at 0.375" (9.5 mm) lead length with 0.5" x 0.5" (12 mm x 12 mm) copper pads
(2) Units mounted on a 3.0" x 3.0" x 0.11" thick (7.5 cm x 7.5 cm x 0.3 cm) aluminum plate heatsink
RATINGS AND CHARACTERISTICS CURVES (TA = 25 °C unless otherwise noted)
Fig. 1 - Derating Curve Output Rectified Current
Fig. 2 - Maximum Non-Repetitive Peak Forward Surge Current
Fig. 3 - Typical Instantaneous Forward Characteristics Per Diode
Fig. 4 - Typical Reverse Leakage Characteristics Per Diode
THERMAL CHARACTERISTICS (TA = 25 °C unless otherwise noted)
PARAMETER SYMBOL KBU8A KBU8B KBU8D KBU8G KBU8J KBU8K KBU8M UNIT
Typical thermal resistance RJA (1) 18 °C/W
RJC (2) 3.0
ORDERING INFORMATION (Example)
PREFERRED P/N UNIT WEIGHT (g) PREFERRED PACKAGE CODE BASE QUANTITY DELIVERY MODE
KBU8J-E4/51 8.0 51 250 Anti-static PVC tray
050 100 150
0
2
4
6
8
Heatsink Mounting,
T
C
, 3.0 x 3.0 x 12" Thk.
Al. Plate (7.5 x 0.3 cm)
PCB Mounting, T
A
0.375" (9.5 mm) Lead Length
0.5 x 0.5" (12 x 12 mm) Copper Pads
60 Hz Resistive or Inductive Load
Temperature (°C)
Average Forward Current (A)
110 100
0
50
100
150
200
250
300
TJ = 150 °C
Single Sine-Wave
Number of Cycles at 60 Hz
Peak Forward Surge Current (A)
1.0 Cycle
0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3
0.1
1
10
100
T
J
= 25 °C
Pulse Width = 300 µs
1 % Duty Cycle
Instantaneous Forward Voltage (V)
Instantaneous Forward Current (A)
020 40 60 80 100
0.01
0.1
1
10
100
TJ = 100 °C
TJ = 25 °C
Percent of Rated Peak Reverse Voltage (%)
Instantaneous Reverse Current (µA)
KBU8A, KBU8B, KBU8D, KBU8G, KBU8J, KBU8K, KBU8M
www.vishay.com Vishay General Semiconductor
Revision: 14-May-14 3Document Number: 88658
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Fig. 5 - Typical Junction Capacitance Per Diode
PACKAGE OUTLINE DIMENSIONS in inches (millimeters)
110 100
10
100
1000
Reverse Voltage (V)
Junction Capacitance (pF)
T
J
= 25 °C
f = 1.0 MHz
V
sig
= 50 mVp-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)
45°
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
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Revision: 08-Feb-17 1Document Number: 91000
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