PD -2.362 rev. C 01/2000
Ultrafast, Soft Recovery Diode
HEXFRED
TM
HFA12PA120C
-55 to +150
A
C
1
W
Ultrafast Recovery
Ultrasoft Recovery
Very Low I
RRM
Very Low Q
rr
Guaranteed Avalanche
Specified at Operating Conditions
Benefits
Reduced RFI and EMI
Reduced Power Loss in Diode and Switching
Transistor
Higher Frequency Operation
Reduced Snubbing
Reduced Parts Count
Features
Description
International Rectifier's HFA12PA120C is a state of the art center tap ultra fast
recovery diode. Employing the latest in epitaxial construction and advanced
processing techniques it features a superb combination of characteristics which
results in performance which is unsurpassed by any rectifier previously available. The
HFA12PA120C has basic ratings of 1200 volts and 6 amps per leg continuous current.
In addition to ultra fast recovery time, the HEXFRED product line features extremely
low values of peak recovery current (I
RRM
) and does not exhibit any tendency to "snap-
off" during the t
b
portion of recovery. The HEXFRED features combine to offer
designers a rectifier with lower noise and significantly lower switching losses in both
the diode and the switching transistor. These HEXFRED advantages can help to
significantly reduce snubbing, component count and heatsink sizes. The HEXFRED
HFA12PA120C is ideally suited for applications in power supplies and power
conversion systems (such as inverters, converters, UPS systems, and power factor
correction circuits), motor drives, and many other similar applications where high
speed, high efficiency is needed.
V
R
= 1200V
V
F
(typ.)* = 2.4V
I
F(AV)
= 6A
Q
rr
(typ.)= 116nC
I
RRM
(typ.)
= 4.4A
t
rr
(typ.)
= 26ns
di
(rec)M
/dt (typ.)* = 100A/s
TO-247AC
Parameter
Max.
Units
V
R
Cathode-to-Anode Voltage
1200
V
I
F
@ T
C
= 100C
Continuous Forward Current
6.0
I
FSM
Single Pulse Forward Current
80
I
FRM
Maximum Repetitive Forward Current
24
P
D
@ T
C
= 25C
Maximum Power Dissipation
62.5
P
D
@ T
C
= 100C
Maximum Power Dissipation
25
T
J
Operating Junction and
T
STG
Storage Temperature Range
*
125C
HFA12PA120C
PD-2.362 rev. C 01/2000
2
Electrical Characteristics @ T
J
= 25C (unless otherwise specified)
Thermal - Mechanical Characteristics
Q 0.063 in. from Case (1.6mm) for 10 sec
R Typical Socket Mount
S Mounting Surface, Flat, Smooth and Greased
Dynamic Recovery Characteristics @ T
J
= 25C (unless otherwise specified)
Parameter
Min.
Typ.
Max.
Units
T
lead
Lead Temperature
300
C
R
thJC
Thermal Resistance, Junction to Case
2.0
R
thJA
Thermal Resistance, Junction to Ambient
80
K/W
R
thCS
Thermal Resistance, Case to Heat Sink
0.5
Wt
Weight
2.0
g
0.07
(oz)
Mounting Torque
6.0
12
Kg-cm
5.0
10
lbfin
Parameter
Min. Typ. Max. Units Test Conditions
t
rr
Reverse Recovery Time
26
I
F
= 1.0A, di
f
/dt = 200A/s, V
R
= 30V
t
rr1
53
80
ns
T
J
= 25C
t
rr2
87
130
T
J
= 125C
I
F
= 6.0A
I
RRM1
Peak Recovery Current
4.4
8.0
T
J
= 25C
I
RRM2
5.0
9.0
T
J
= 125C
V
R
= 200V
Q
rr1
Reverse Recovery Charge
116
320
T
J
= 25C
Q
rr2
233
585
T
J
= 125C
di
f
/dt = 200A/s
di
(rec)M
/dt1
Peak Rate of Recovery
180
T
J
= 25C
di
(rec)M
/dt2
Current During t
b
100
T
J
= 125C
R
S
Q
A
A
nC
A/s
Parameter
Min. Typ. Max.
Units
Test Conditions
V
BR
Cathode Anode Breakdown
1200
V
I
R
= 100A
Voltage
V
FM
Max. Forward Voltage
2.7
3.0
I
F
= 6.0A
3.5
3.9
V
I
F
= 12A
2.4
2.8
I
F
= 6.0A, T
J
= 125C
I
RM
Max. Reverse Leakage Current
0.26
5.0
V
R
= V
R
Rated
110
500
T
J
= 125C, V
R
= 0.8 x V
R
Rated
D
R
C
T
Junction Capacitance
9.0
14
pF
V
R
= 200V
Rated
L
S
Series Inductance
8.0
nH
Measured lead to lead 5mm from pkg body
3
PD-2.362 rev. C 01/2000
HFA12PA120C
Fig. 1 - Typical Forward Voltage Drop Characteristics
Forward Voltage Drop - V
FM
(V)
Instantaneous Forward Current - I
F
(A)
Reverse Current - I
R
(
A)
Reverse Voltage - V
R
(V)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(pF)
Thermal Impedance Z
thJC
(C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
0.1
1
10
100
0
2
4
6
T = 150C
T = 125C
T = 25C
J
J
J
0.01
0.1
1
10
0.00001
0.0001
0.001
0.01
0.1
1
10
100
Single Pulse
(Thermal Resistance)
D = 0.50
D = 0.20
D = 0.10
D = 0.05
D = 0.02
D = 0.01
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
J
DM
thJC
C
2
1
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
0.01
0.1
1
10
100
1000
0
200 400 600 800 1000 1200 1400
125C
100C
25C
T = 150C
J
1
10
100
1
10
100
1000
10000
T = 25C
J
HFA12PA120C
PD-2.362 rev. C 01/2000
4
Fig. 5 - Typical Reverse Recovery
Vs. di
f
/dt
Fig. 8 - Typical Stored Charge vs. di
f
/dt
Fig. 6 - Typical Recovery Current
Vs. di
f
/dt
Fig. 7 - Typical di
(REC)
M/dt vs. di
f
/dt
Qrr - ( nC )
di
f
/dt - (A/s )
di
f
/dt - (A/s )
20
30
40
50
60
70
80
90
100
110
100
1000
I
F
= 6 A
I
F
= 4 A
R
J
J
V = 200V
T = 125C
T = 25C
0
200
400
600
800
1000
100
1000
I
F
= 6 A
I
F
= 4 A
R
J
J
V = 200V
T = 125C
T = 25C
trr - ( nC )
Irr - ( A)
di
(REC)
M/dt - (A/s )
di
f
/dt - (A/s )
di
f
/dt - (A/s )
0
5
10
15
20
25
100
1000
I
F
= 6 A
I
F
= 4 A
R
J
J
V = 200V
T = 125C
T = 25C
10
100
1000
10000
100
1000
I
F
= 6 A
I
F
= 4 A
R
J
J
V = 200V
T = 125C
T = 25C
5
PD-2.362 rev. C 01/2000
HFA12PA120C
t
a
t
b
t
r r
Q
r r
I
F
I
R R M
I
R R M
0 .5
d i(r e c )M /d t
0 .7 5 I
R R M
5
4
3
2
0
1
d i /d t
f
4. Q
rr
- Area under curve
defined by t
rr
and I
RRM
t
rr
X I
RRM
Q
rr
=
2
5. di
(rec)M
/dt - Peak rate of
change of current during t
b
portion of t
rr
Fig. 10 - Reverse Recovery Waveform and Definitions
Fig. 9- Reverse Recovery Parameter Test Circuit
1. di
f
/dt - Rate of change of
current through zero
crossing
2. I
RRM
- Peak reverse
recovery current
3. trr - Reverse recovery
time measured from zero
crossing point of negative
going I
F
to point where a line
passing through 0.75 I
RRM
and 0.50 I
RRM
extrapolated to zero current
R E V E R S E R E C O V E R Y C I R C U IT
IR F P 2 5 0
D .U .T .
L = 7 0 H
V = 2 0 0 V
R
0 .0 1
G
D
S
d if/d t
A D J U S T
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