PD -2.465 rev. B 03/99
HFA135NH40
HEXFRED
Features
Reduced RFI and EMI
Reduced Snubbing
Extensive Characterization of
Recovery Parameters
TM
Ultrafast, Soft Recovery Diode
LUG
TERMINAL
ANODE
V
R
= 400V
V
F
(typ.)
= 1V
d
a
I
F(AV)
= 135A
Q
rr
(typ.) = 290nC
I
RRM
(typ.) = 7.5A
t
rr
(typ.) = 50ns
di
(rec)M
/dt (typ.)
= 270A/µs
BASE CATHODE
Description
HEXFRED
T M
diodes are optimized to reduce losses and EMI/RFI in high frequency
power conditioning systems. An extensive characterization of the recovery
behavior for different values of current, temperature and di/dt simplifies the
calculations of losses in the operating conditions. The softness of the recovery
eliminates the need for a snubber in most applications. These devices are
ideally suited for power converters, motors drives and other applications where
switching losses are significant portion of the total losses.
HALF-PAK
Absolute Maximum Ratings (per Leg)
Parameter
V
R
I
F
@ T
C
= 25°C
I
F
@ T
C
= 100°C
I
FSM
E
AS
P
D
@ T
C
= 25°C
P
D
@ T
C
= 100°C
T
J
T
STG
Cathode-to-Anode Voltage
Continuous Forward Current
Continuous Forward Current
Single Pulse Forward Current
Non-Repetitive Avalanche Energy
Maximum Power Dissipation
Maximum Power Dissipation
Operating Junction and
Storage Temperature Range
Max.
400
244
122
900
1.4
460
185
-55 to +150
Units
V
A
mJ
W
°C
Thermal - Mechanical Characteristics
Parameter
R
thJC
R
thCS
Wt
Junction-to-Case
Case-to-Sink, Flat, Greased Surface
Weight
Mounting Torque
Terminal Torque
Vertical Pull
2 inch Lever Pull
Note:
Limited by junction temperature
L = 100µH, duty cycle limited by max T
J
125°C
Min.
15 (1.7)
30 (3.4)
Typ.
0.15
26 (0.9)
Max.
0.27
25 (2.8)
40 (4.6)
35
35
Units
°C/W
K/W
g (oz)
lbfin
(Nm)
lbfin
Mounting surface must be smooth, flat, free or burrs or other
protrusions. Apply a thin even film or thermal grease to mounting
surface. Gradually tighten each mounting bolt in 5-10 lbfin steps
until desired or maximum torque limits are reached. Module
1
PD-2.465 rev. B 03/99
HFA135NH40
Parameter
V
BR
V
FM
Cathode Anode Breakdown Voltage
Max Forward Voltage
See Fig. 1
I
RM
C
T
L
S
Max Reverse Leakage Current
See Fig. 2
Junction Capacitance
Series Inductance
See Fig. 3
Electrical Characteristics (per Leg) @ T
J
= 25°C (unless otherwise specified)
Min. Typ. Max. Units
400
1.1
1.4
1.0
1.5
2.3
280
1.3
1.6
1.2
9.0
12
380
V
V
µA
mA
pF
nH
Test Conditions
I
R
= 100µA
I
F
= 135A
I
F
= 270A
I
F
= 135A, T
J
= 125°C
V
R
= V
R
Rated
T
J
= 125°C, V
R
= 320V
V
R
= 200V
From top of terminal hole to mounting
plane
6.0
Dynamic Recovery Characteristics (per Leg) @ T
J
= 25°C (unless otherwise specified)
Parameter
t
rr
t
rr1
t
rr2
I
RRM1
I
RRM2
Q
rr1
Q
rr2
di
(rec)M
/dt1
di
(rec)M
/dt2
Reverse Recovery Time
See Fig. 5
Peak Recovery Current
See Fig. 6
Reverse Recovery Charge
See Fig. 7
Peak Rate of Fall of Recovery Current
During t
b
See Fig. 8
Min. Typ. Max. Units
Test Conditions
50
I
F
= 1.0A, di
f
/dt = 200A/µs, V
R
= 30V
77 120
ns T
J
= 25°C
290 440
T
J
= 125°C
I
F
= 135A
7.5 14
T
J
= 25°C
A
16
30
T
J
= 125°C
V
R
= 200V
290 780
T
J
= 25°C
nC
2300 6300
T
J
= 125°C
di
f
/dt = 200A/µs
320
T
J
= 25°C
A/µs
270
T
J
= 125°C
1/4-20 UNC-2B
30.40 (1.197)
29.90 (1.177)
19.69 (0.775)
18.42 (0.725)
4.11 (0.162)
3.86 (0.152)
12.83 (0.505)
DIA.
12.57 (0.495)
4.11 (0.162)
DIA.
3.86 (0.152)
19.18 (0.755)
SQ.
18.92 (0.745)
1
LEAD ASSIGNMENTS
1 - ANODE
2 - CATHODE
14.10 (0.555)
13.59 (0.535)
15.75 (0.620)
14.99 (0.590)
H
ALF-
P
AK
Dimensions in millimeters and inche
2
39.62 (1.560)
38.61 (1.520)
3.30 (0.130)
3.05 (0.120)
2
HFA135NH40
PD-2.465 rev. B 03/99
1000
100000
Reverse Current - I
R
(µA)
10000
1000
100
10
1
0.1
0
TJ = 150°C
TJ = 125°C
Instantaneous Forward Current - I
F
(A)
100
T
J
= 150°C
T
J
= 125°C
T
J
= 25°C
TJ = 25°C
100
200
300
400
Junction Capacitance - C
T
(pF)
10
Fig. 2
- Typical Reverse Current vs. Reverse
Voltage
10000
Reverse Voltage - V
R
(V)
A
T = 25°C
J
1000
1
0.4
0.8
1.2
1.6
2.0
Forward Voltage Drop - V
FM
(V)
Fig. 1
- Maximum Forward Voltage Drop
vs. Instantaneous Forward Current
100
1
10
100
1000
Reverse Voltage - V
R
(V)
Fig. 3
- Typical Junction Capacitance vs.
Reverse Voltage
1
Thermal Impedance - Z
thJC
(K/W)
0.1
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
P
DM
t
1
t2
Notes:
1. Duty factor D = t / t
1 2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.01
0.1
1
10
100
0.01
Single Pulse
(Thermal Resistance)
0.001
0.00001
0.0001
0.001
Fig. 4
- Maximum Thermal Impedance Z
thJC
Characteristics
3
t
1
, Rectangular Pulse Duration (Seconds)
PD-2.465 rev. B 03/99
500
HFA135NH40
100
V
R
= 200V
T
J
= 125°C
T
J
= 25°C
400
V
R
= 200V
T
J
= 125°C
T
J
= 25°C
I
F
= 200A
I
F
= 135A
t
rr
- (ns)
300
I
IRRM
- (A)
I
F
= 50A
10
200
I
F
= 200A
I
F
=135A
100
I
F
= 50A
0
100
di f /dt - (A/µs)
1000
1
100
di
f
/dt - (A/µs)
1000
Fig. 5
- Typical Reverse Recovery vs. di
f
/dt
6000
Fig. 6
- Typical Recovery Current vs. di
f
/dt
10000
V
R
= 200V
T
J
= 125°C
T
J
= 25°C
I
F
= 200A
4000
V
R
= 200V
T
J
= 125°C
T
J
= 25°C
I
F
= 135A
I
F
= 50A
di(rec)M/dt - (A/µs)
Q
RR
- (nC)
1000
I
F
= 135A
I
F
= 50A
I
F
= 200A
2000
0
100
di
f
/dt - (A/µs)
1000
100
100
di
f
/dt - (A/µs)
1000
Fig. 7
- Typical Stored Charge vs. di
f
/dt
Fig. 8
- Typical di
(rec)M
/dt vs. di
f
/dt
4
HFA135NH40
PD-2.465 rev. B 03/99
3
I
F
t
rr
t
a
t
b
4
REVERSE RECOVERY CIRCUIT
V
R
= 200V
0
Q
rr
I
RRM
2
0.5 I
RRM
di(rec)M/dt
5
0.01
Ω
L = 70µH
D.U.T.
D
IRFP250
S
1
0.75 I
RRM
di
f
/dt
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
dif/dt
ADJUST G
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
Fig. 9
- Reverse Recovery Parameter Test
Circuit
L = 100µH
HIGH-SPEED
SWITCH
Rg = 25 ohm
CURRENT
MONITOR
FREE-WHEEL
DIODE
+
Vd = 50V
Fig. 10
- Reverse Recovery Waveform and
Definitions
I
L(PK)
DUT
DECAY
TIME
V
(AVAL)
V
R(RATED)
Fig. 11
- Avalanche Test Circuit and Waveforms
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Data and specifications subject to change without notice.
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