Fairchild RHRG75120 service manual
Data Sheet October 2008
RHRG75120
75A, 1200V Hyperfast Diode
The RHRG75120 is a hyperfast diode with soft recovery
characteristics (t
< 85ns). It has half the recovery time of
rr
ultrafast diodes and is silicon nitride passivated
ion-implanted epitaxial planar construction.
This device is intended for use as a freewheeling/clamping
diode and rectifier in a variety of high frequency switching
power supplies and other power switching applications. Its
low stored charge and hyperfast soft recovery characteristic
minimize ringing and electrical noise in many power
switching circuits, thus reducing power loss in the switching
transistors.
Formerly developmental type TA49042.
Ordering Information
PART NUMBER PACKAGE BRAND
RHRG75120 TO-247 RHRG75120
NOTE: When ordering, use the entire part number.
Symbol
K
Features
• Hyperfast with Soft Recovery. . . . . . . . . . . . . . . . . . <85ns
• Operating Temperature . . . . . . . . . . . . . . . . . . . . . .175
o
• Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200V
• Avalanche Energy Rated
• Planar Construction
Applications
• Switching Power Supplies
• Power Switching Circuits
• General Purpose
Packaging
JEDEC STYLE TO-247
ANODE
CATHODE
CATHODE
(BOTTOM SIDE
METAL)
C
A
Absolute Maximum Ratings
Peak Repetitive Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
Working Peak Reverse Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
DC Blocking Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
Average Rectified Forward Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
(TC = 42oC)
Repetitive Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
(Square Wave, 20kHz)
Nonrepetitive Peak Surge Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I
(Halfwave, 1 Phase, 60Hz)
Maximum Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P
Avalanche Energy (See Figures 7 and 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E
Operating and Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T
TC = 25oC
RRM
RWM
F(AV)
FRM
FSM
STG
RHRG75120 UNITS
1200 V
1200 V
1200 V
75 A
150 A
500 A
190 W
50 mJ
-65 to 175
AVL
, T
R
D
J
o
C
©2008 Fairchild Semiconductor Corporation RHRG75120 Rev. B1
RHRG75120
Electrical Specifications
TC = 25oC, Unless Otherwise Specified
SYMBOL TEST CONDITION MIN TYP MAX UNITS
V
F
I
R
t
rr
IF = 75A - - 3.2 V
IF = 75A, TC = 150
ο
C - - 2.6 V
VR = 1200V - - 250
VR = 1200V, TC = 150
ο
C- - 2mA
IF = 1A, dIF/dt = 100A/ µs- - 85ns
IF = 75A, dIF/dt = 100A/ µs - - 100 ns
t
a
t
b
R
θJC
IF = 75A, dIF/dt = 100A/ µs - 60 - ns
IF = 75A, dIF/dt = 100A/ µs - 25 - ns
- - 0.8
DEFINITIONS
VF = Instantaneous forward voltage (pw = 300 µs, D = 2%).
IR = Instantaneous reverse current.
trr = Reverse recovery time (See Figure 6), summation of ta + tb.
ta = Time to reach peak reverse current (See Figure 6).
tb = Time from peak IRM to projected zero crossing of IRM based on a straight line from peak IRM through 25% of IRM (See Figure 6).
R
= Thermal resistance junction to case.
θJC
pw = Pulse width.
D = Duty cycle.
o
µA
C/W
Typical Performance Curves
400
100
10
, FORWARD CURRENT (A)
F
I
1
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
175oC
100oC
25oC
VF, FORWARD VOLTAGE (V)
FIGURE 1. FORWARD CURRENT vs FORWARD VOLTAGE FIGURE 2. REVERSE CURRENT vs REVERSE VOLTAGE
1000
175oC
100
100oC
10
1
, REVERSE CURRENT (µA)
R
I
25oC
0.1
0 200 400 600 800 1000 1200
VR, REVERSE VOLTAGE (V)
©2008 Fairchild Semiconductor Corporation RHRG75120 Rev. B1
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