GB
U8A
-
GB
U8K
GBU8A-GBU8M, Rev. A
GBU8A - GBU8K
8.0 Ampere Bridge Rectifiers
Absolute Maximum Ratings*
T
A
= 25C unless otherwise noted
*
These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
**
Device mounted on PCB with 0.5 x 0.5" (12 x 12 mm).
Electrical Characteristics
T
A
= 25C unless otherwise noted
1998 Fairchild Semiconductor Corporation
Features
Surge overload rating: 200 amperes peak.
Reliable low cost construction utilizing
molded plastic technique.
Ideal for printed circuit board.
Parameter
Device
Units
8A
8B
8D
8G
8J
8K
Peak Repetitive Reverse Voltage
50
100
200
400
600
800
V
Maximum RMS Input Voltage
35
70
140
280
420
560
V
DC Reverse Voltage (Rated V
R
)
50
100
200
400
600
800
V
Maximum Reverse Leakage, per element
@ rated V
R
T
A
= 25
C
T
A
= 100
C
5.0
500
m
A
m
A
Maximum Forward Voltage Drop, per element
@ 8.0 A
1.0
V
I
2
t rating for fusing
t < 8.35 ms
166
A
2
Sec
Symbol
Parameter
Value
Units
I
O
Average Rectified Current
@ T
A
= 100
C
@ T
A
= 45
C
8.0
6.0
A
A
i
f(surge)
Peak Forward Surge Current
8.3 ms single half-sine-wave
Superimposed on rated load (JEDEC method)
200
A
P
D
Total Device Dissipation
Derate above 25
C
6.9
55
W
mW/
C
R
q
JA
Thermal Resistance, Junction to Ambient,** per leg
18
C/W
T
stg
Storage Te mperature Range
-55 to +150
C
T
J
Operating Junction Tem perature
-55 to +150
C
0.710 (18.0)
0.690 (17.5)
0.310 (7.9)
0.290 (7.4)
0.080 (2.03)
0.060 (1.52)
0.050 (1.27)
0.040 (1.02)
0.210 (5.3)
0.190 (4.8)
0.050 (1.3)
0.040 (1.0)
0.125 X 45
O
(3.2) Typ
0.075 R
(1.9)
+
0.740 (18.8)
0.720 (18.3)
0.080 (2.03)
0.065 (1.65)
0.100 (2.54)
0.085 (2.16)
+
+
0.160 (4.1)
0.140 (3.5)
0.085 (2.16)
0.065 (1.65)
0.020 R
TYP
0.880 (22.3)
0.860 (21.8)
Dimensions are in:
inches (mm)
GBU
~
~
GBU8A - GBU8K
GBU8A-GBU8M, Rev. A
Bridge Rectifiers
(continued)
Typical Characteristics
Forward Current Derating Curve
0
50
100
150
0
2
4
6
8
TEMPERATURE ( C)
FO
RW
AR
D CU
RRE
NT
(
A
)
MOUNTED ON PC BOARD,
TA 0.5" (12.7mm) LEAD LENGTH
60Hz RESISTIVE OR INDUCTIVE LOAD
HEAT-SINK
MOUNTING, TC
4"x4"x0.15"
COPPER PLATE
Non-Repetitive Surge Current
1
2
5
10
20
50
100
0
40
80
120
160
200
NUMBER OF CYCLES AT 60Hz
F
O
R
W
A
R
D
S
URG
E
CU
RR
E
N
T
(
A
)
T = 105 C
A
Forward Characteristics
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
0.1
1
10
100
FORWARD VOLTAGE (V)
F
O
R
W
AR
D CU
RR
E
N
T
(
A
)
T = 25 C
A
Pulse Width = 300
s
1% Duty Cycle
Junction Capacitance
1
5
10
50
100
10
50
100
400
REVERSE VOLTAGE (V)
C
A
PA
C
I
TA
N
C
E (
p
F
)
T = 25 C
A
f = 1.0 MHz
Visg = 50m Vp-p
Reverse Characteristics
0
20
40
60
80
100
120
140
0.01
0.1
1
10
PERCENT OF RATED PEAK REVERSE VOLTAGE (%)
R
EVE
R
S
E
C
U
R
R
EN
T
(
A
)
T = 100 C
C
T = 25 C
A
TRADEMARKS
ACExTM
CoolFETTM
CROSSVOLTTM
E
2
CMOS
TM
FACTTM
FACT Quiet SeriesTM
FAST
FASTrTM
GTOTM
HiSeCTM
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
LIFE SUPPORT POLICY
FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
ISOPLANARTM
MICROWIRETM
POPTM
PowerTrenchTM
QSTM
Quiet SeriesTM
SuperSOTTM-3
SuperSOTTM-6
SuperSOTTM-8
TinyLogicTM
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 STATUS DEFINITIONS
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.
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.
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