ETC HFA45HC120C

PD-20375A
HFA45HC120C
TM
HEXFRED
Ultrafast, Soft Recovery Diode
Features
(ISOLATED BASE)
• Reduced RFI and EMI
• Reduced Snubbing
• Extensive Characterization of Recovery Parameters
• Hermetic
• Electrically Isolated
• Ceramic Eyelets
VR = 1200V
VF = 3.0V
Qrr = 675nC
ANODE
COMMON
CATHODE
ANODE
Description
TM
HEXFRED 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.
TO-258AA
Absolute Maximum Ratings (per Leg)
Parameter
VR
IF @ TC = 100°C
IFSM @ TC = 25°C
PD @ TC = 25°C
TJ
TSTG
D.C. Reverse Voltage
Continuous Forward Current 
Single Pulse Forward Current ‚
Maximum Power Dissipation
Operating Junction and
Storage Temperature Range
Max.
Units
1200
28
190
104
-55 to +150
V
A
W
°C
Thermal - Mechanical Characteristics
Parameter
RθJC
Junction-to-Case, Single Leg Conducting
Weight
Typ.
Max.
Units
—
10.9
1.2
—
°C/W
g
Note:  D.C. = 50% rect. wave
‚ 1/2 sine wave, 60 Hz , P.W. = 8.33 ms
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HFA45HC120C
Electrical Characteristics (per Leg) @ TJ = 25°C (unless otherwise specified)
Parameter
VBR
VFM
Min. Typ. Max. Units
Cathode Anode Breakdown Voltage
Max Forward Voltage
I RM
Max Reverse Leakage Current
CT
LS
Junction Capacitance
Series Inductance
1200 —
—
—
—
—
—
—
—
—
—
—
—
—
—
8.7
—
3.0
3.9
2.7
20
2.0
40
—
V
V
µA
mA
pF
nH
Test Conditions
IR = 100µA
IF = 14A
IF = 28A
IF = 14A, TJ = 125°C
VR = VR Rated
TJ = 125°C, VR = 960V
VR = 200V
Measured from center of bond pad to
end of anode bonding wire
Dynamic Recovery Characteristics (per Leg) @ TJ = 25°C
Parameter
trr
IRRM
QRR
Min. Typ. Max. Units
Reverse Recovery Time
Max Reverse Recovery Current
Reverse Recovered Charge
—
—
—
—
—
—
135
10
675
nS
A
nC
Test Conditions
IF = 14A, di/dt < 200A/us, VR = 200V
IF = 14A, di/dt < 200A/us, VR = 200V
IF = 14A, di/dt < 200A/us, VR = 200V
Case Outline and Dimensions — TO-258AA
Conforms to JEDEC Outline TO-258AA
Dimensions in millimeters and (inches)
CAUTION
BERYLLIA WARNING PER MIL- PRF-19500
Package containing beryllia shall not be ground, sandblasted,machined, or have other operations performed on them
which will produce beryllia or beryllium dust. Furthermore, beryllium oxide packages shall not be placed in acids that
will produce fumes containing beryllium.
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HFA45HC120C
3
t rr
IF
R E V E R S E R E C O V E R Y C IR C U IT
0
Q rr
V R = 2 00 V
2
0.5 I R R M
5
0.75 I R R M
L = 70µH
D .U .T.
D
G
I RRM
4
di(re c)M /dt
0.01 Ω
d if/d t
A D JU S T
tb
ta
IR F P 2 50
S
Fig.1 - Reverse Recovery Parameter Test
Circuit
1
di f /d t
1. dif/dt - Rate of change of current
through zero crossing
2. IRRM - Peak reverse recovery current
4. Qrr - Area under curve defined by trr
and IRRM
trr X IRRM
Qrr =
2
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
Fig. 2 - Reverse Recovery Waveform and
Definitions
WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, Tel: (310) 322 3331
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http://www.irf.com/
Data and specifications subject to change without notice.
6/99
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