Fairchild GBU4A service manual
GBU4A - GBU4M
Bridge Rectifiers
Features
• Glass passivated junction.
• Surge overload rating: 150 amperes peak.
• Reliable low cost construction utilizing molded plastic technique.
• Ideal for printed circuit board.
• UL certified, UL # E326243.
GBU4A - GBU4M — Bridge Rectifiers
September 2011
+
~
~
-
GBU
Absolute Maximum Ratings * T
Symbol Parameter
V
RRM
V
RMS
V
I
F(AV)
I
FSM
T
STG
T
Maximum Repetitive Reverse Voltage 50 100 200 400 600 800 1000 V
Maximum RMS Bridge Input Voltage 35 70 140 280 420 560 700 V
DC Reverse Voltage (Rated VR) 50 100 200 400 600 800 1000 V
R
Average Recitified Forward Current,
@ TA = 100°C
Non-Repetitive Peak Forward Surge Current
8.3ms Single Half-Sine-Wave
Storage Temperature Range -55 to +150 °C
Operating Junction Temperature -55 to +150 °C
J
= 25°C unless otherwise noted
A
4A 4B 4D 4G 4J 4K 4M
@ TA = 40°C
Value
4.0
3.0
150 A
* These ratings are limiting values above which the serviceability of any semiconductor device may by impaired.
Thermal Characteristics
Symbol Parameter Value Units
P
R
* Device mounted on PCB with 0.5 × 0.5” (12 × 12mm).
Power Dissipation 8 W
D
Thermal Resistance, Junction to Ambient, * per leg 19 °C/W
θJA
Units
A
A
Electrical Characteristics T
= 25°C unless otherwise noted
A
Symbol Parameter Value Units
V
I
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
GBU4A - GBU4M Rev. C2 1
Forward Voltage, per element @ 4.0A 1.0 V
F
Reverse Current, per element @ Rated V
R
TA = 25°C
TA = 125°C
2
I
t Rating for Fusing t < 8.35ms 93 A2s
R
5.0
500
μA
μA
Typical Performance Characteristics
GBU4A - GBU4M — Bridge Rectifiers
5
[A]
F
4
3
2
MOUNTED ON PC BOARD,
TA 0.5" (12.7mm) LE A D LE N GTH
1
60Hz RESISTIVE OR INDUCTIVE LOAD
0
0 50 100 150
Average Rectified Forward Current, I
Ambient Temperature [ºC]
HEAT-SINK
MOUNTING, TC
4x4x0 .15"
COPPER PLATE
Figure 1. Forward Current Derating Curve
10
º
T = 100 C
C
1
[mA]
R
0.1
º
T = 25 C
J
Reverse Current, I
0.01
0 20406080100120140
Percent of Rated Peak Reverse Voltage [%]
100
[A]
F
10
T = 25 C
º
1
J
Pulse Width = 300
1% Duty Cycle
μμμμ
s
Forward Current, I
0.1
0.7 0.8 0.9 1 1.1 1.2 1.3 1.4
Forward Voltage, VF [V]
Figure 2. Forward Voltage Characteristics
150
[A]
FSM
120
90
60
º
T = 105 C
J
30
0
Peak Forward Surge Current, I
12 51020 50100
Number of Cycles at 60Hz
Figure 3. Reverse Current vs Reverse Voltage
Figure 4. Non-Repetitive Surge Current
200
[pF]
100
T
50
T = 25 C
º
J
f = 1.0 MHz
Total Capacitance, C
Visg = 50m Vp-p
10
1 5 10 50 100
GBU4A- GBU4J
GBU4K
K-GBU4M
Reverse Voltage, VR [V]
Figure 5. Total Capacitance
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
GBU4A - GBU4M Rev. C2 2
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