11/08/05
• Reduced RFI and EMI
• Reduced Snubbing
• Extensive Characterization of Recovery Parameters
• Hermetic
• Electrically Isolated
• Ceramic Eyelets
Features
Description
These Ultrafast, soft recovery 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.
Ultrafast, Soft Recovery Diode
FRED
Note: D.C. = 50% rect. wave
1/2 sine wave, 60 Hz , P.W. = 8.33 ms
HFA35HB120
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Parameter Max. Units
VRCathode to Anode Voltage 1200 V
IF(AV) Continuous Forward Current, TC =100°C 11
IFSM Single Pulse Forward Current, TC = 25°C 150
PD @ TC = 25°C Maximum Power Dissipation 83 W
TJ, TSTG Operating Junction and Storage Temperature Range -55 to +150 °C
A
Absolute Maximum Ratings
CASE STYLE
TO-254AA ANODECATHODE
(ISOLATED BASE)
VR = 1200V
vF = 3.1V
Qrr = 510nC
di(rec)M /dt = 350A/µs
PD-20370A
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HFA35HB120
Electrical Characteristics @ TJ = 25°C (unless otherwise specified)
A/µs
nC
A
Dynamic Recovery Characteristics @ TJ = 25°C (unless otherwise specified)
A/µs
nC
A
Parameter Min. Typ. Max. Units Test Conditions
trr1 Reverse Recovery Time — 80 120 ns TJ = 25°C See Fig.
trr2 — 130 195 TJ = 125°C 5 IF = 11A
IRRM1 Peak Recovery Current — 7.25 10.9 TJ = 25°C See Fig.
IRRM2 — 10.2 15.3 TJ = 125°C 6 VR = 200V
Qrr1 Reverse Recovery Charge — 340 510 TJ = 25°C See Fig.
Qrr2 — 825 1240 TJ = 125°C 7 dif/dt = 200A/µs
di(rec)M/dt1 Peak Rate of Fall of Recovery Current — 230 350 TJ = 25°C See Fig.
di(rec)M/dt2 During tb— 160 240 TJ = 125°C 8
Thermal - Mechanical Characteristics
Parameter Typ. Max. Units
RthJC Junction-to-Case — 1.5
Wt Weight 9.3 — g
°C/W
See Fig. 2
Parameter Min. Typ. Max. Units Test Conditions
VBR Cathode Anode Breakdown Voltage 1200 — — V IR = 100µA
LSSeries Inductance — 6.7 — nH Measured from anode lead to cathode
lead , 6mm( 0.025 in) from package
See Fig. 2
VFForward Voltage — — 3.1 IF = 11A
See Fig. 1 — — 4.0 IF = 22A
— — 2.7 IF = 11A, TJ = 125°C
V
IRReverse Leakage Current — — 10 µA V R = VR Rated
CT Junction Capacitance, See Fig. 3 — 28 42
— — 1.0 mA VR = 960V, TJ = 125°C
pF VR = 200V
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HFA35HB120
Fig. 4 - Maximum Thermal Impedance Zthjc Characteristics
Fig. 2 - Typical Reverse Current Vs. Reverse
Voltage
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage
Fig. 1 - Maximum Forward Voltage Drop Vs.
Instantaneous Forward Current
1
10
100
0.0 2.0 4.0 6.0 8.0 10.0
FM
F
In stantaneous Forward Current - I (A)
Forward V ol t age Drop - V (V )
T = 150°C
T = 125°C
T = 25°C
J
J
J
0.001
0.01
0.1
1
10
100
1000
10000
0 300 600 900 120
0
R
R
Reverse Voltage - V (V)
T = 150°C
Reverse Current - I (µA)
T = 125°C
J
J
T = 25°C
J
T = -55°C
J
10
100
1000
1 10 100 100
0
T = 25°C
J
Reverse Voltage - V (V)
R
T
Junction Capacitance - C (pF
)
A
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10
Notes:
1. Duty factor D = t / t
2. P eak T =P x Z + T
1 2
JDM thJC C
P
t
t
DM
1
2
t , Re c ta ngula r P ulse Dura t io n (se c )
Thermal Response(Z )
1
thJC
0.01
0.02
0.05
0.10
0.20
D = 0. 50
SINGLE PULSE
(THERMAL RESPONSE)
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HFA35HB120
Fig. 7 - Typical Stored Charge Vs. dif/dt Fig. 8 - Typical di(rec)M/dt Vs. dif/dt
Fig. 5 - Typical Reverse Recovery Vs. dif/dt, Fig. 6 - Typical Recovery Current Vs. dif/dt,
100
1000
10000
100 1000
f
di /dt - (A/µs)
RR
Q - (n C )
I = 22 A
I = 11A
I = 5.5 A
F
F
F
V = 200V
T = 125°C
T = 2 5°C
R
J
J
10
100
1000
10000
100 1000
f
di /dt - (A/µs)
d i(re c)M/dt - (A /µ s)
I = 11A
I = 5. 5 A
I = 22A
F
F
F
V = 200V
T = 125°C
T = 25°C
R
J
J
0
50
100
150
200
250
100 1000
trr - (n s)
f
di /dt - (A/µs)
V = 200V
T = 125°C
T = 25°C
R
J
J
I = 2 2 A
I = 11A
I = 5.5A
F
F
F
1
10
1
00
100 1000
f
di /dt - (A/µs)
I = 22A
I = 11A
I = 5.5A
F
F
F
V = 200V
T = 125°C
T = 25°C
R
J
J
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HFA35HB120
4. Qrr - Area under curve defined by trr
and IRRM
trr X IRRM
Qrr =
2
5. di(rec)M/dt - Peak rate of change of
current during tb portion of trr
Fig. 10 - Reverse Recovery Waveform and DefinitionsFig. 9 - Reverse Recovery Parameter Test Circuit
t
a
t
b
t
rr
Q
rr
I
F
I
RRM
I
RRM
0.5
di(rec)M/dt
0.75 I
RRM
5
4
3
2
0
1
di /dt
f
1. dif/dt - Rate of change of current
through zero crossing
2. IRRM - Peak reverse recovery current
3. trr - Reverse recovery time measured
from zero crossing point of negative
going IF to point where a line passing
through 0.75 IRRM and 0.50 IRRM
extrapolated to zero current
REVERSE RECOVERY CIRCUIT
IRFP250
D.U.T.
L = 70µH
V = 200V
R
0.01
Ω
G
D
S
dif/dt
ADJUST
Case Outline and Dimensions — TO-254AA
NOTES:
1. DIMENSIONING & TO LERA N CING PER ASM E Y 14.5M-1994.
2. ALL DIMENSIONS A RE SHOWN IN MILLIMETERS [INCHES].
3. CONTROLLING DIMENSI ON: INCH.
4. CONFOR MS TO JEDE C OU TL INE TO-254AA.
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 252-7105
IR LEOMINSTER: 205 Crawford St., Leominster, Massachusetts 01453, Tel: (978) 534-5776
Data and specifications subject to change without notice. 11/05
1 = D RAIN
PIN ASSIGNMENTS
1 = CATHODE
3 = ANODE
2 = N/C
3.81 [. 150]
0.12 [. 005]
1.27 [.050]
1.02 [.040]
6.60 [. 260]
6.32 [. 249]
C14.48 [.570]
12.95 [.510]
3X
0.36 [.014] B A
1.14 [.045]
0.89 [.035]
2X
3.81 [.150]
20.32 [.800]
20.07 [.790]
13.84 [. 545]
13.59 [. 535]
3.78 [.149]
3.53 [.139]
17.40 [.685]
16.89 [.665]
A
123
13.84 [.545]
13.59 [.535]
0.84 [.033]
MAX.
B
