DF051
DF051
Fast Recovery Diode
Replaces March 1998 version, DS4147-4.3 |
DS4147-5.0 January 2000 |
APPLICATIONS
■Induction Heating
■A.C. Motor Drives
■Inverters And Choppers
■Welding
■High Frequency Rectification
■UPS
FEATURES
■Double side cooling
■High surge capability
■Low recovery charge
VOLTAGE RATINGS
Type Number |
Repetitive Peak |
Conditions |
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Reverse Voltage |
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VRRM |
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V |
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DF051 25 |
2500 |
VRSM = VRRM + 100V |
DF051 24 |
2400 |
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DF051 22 |
2200 |
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DF051 20 |
2000 |
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Lower voltage grades available.
KEY PARAMETERS
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VRRM |
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2500V |
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IF(AV) |
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1490A |
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IFSM |
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14000A |
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Qr |
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800μC |
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trr |
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5.0μs |
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Outline type code: CB450.
See Package Details for further information.
CURRENT RATINGS
Symbol |
Parameter |
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Conditions |
Max. |
Units |
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Double Side Cooled |
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I |
Mean forward current |
Half wave resistive load, T |
case |
= 65oC |
1490 |
A |
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F(AV) |
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I |
RMS value |
T |
case |
= 65oC |
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2340 |
A |
F(RMS) |
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I |
Continuous (direct) forward current |
T |
case |
= 65oC |
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2160 |
A |
F |
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Single Side Cooled (Anode side) |
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IF(AV) |
Mean forward current |
Half wave resistive load, Tcase = 65oC |
995 |
A |
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I |
RMS value |
T |
case |
= 65oC |
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1560 |
A |
F(RMS) |
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I |
Continuous (direct) forward current |
T |
case |
= 65oC |
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1390 |
A |
F |
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1/7
DF051
SURGE RATINGS
Symbol |
Parameter |
Conditions |
Max. |
Units |
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IFSM |
Surge (non-repetitive) forward current |
10ms half sine; with 0% VRRM, Tj = 150oC |
14.0 |
kA |
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I2t |
I2t for fusing |
980 x 103 |
A2s |
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IFSM |
Surge (non-repetitive) forward current |
10ms half sine; with 50% VRRM, Tj = 150oC |
11.2 |
kA |
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I2t |
I2t for fusing |
627 x 103 |
A2s |
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THERMAL AND MECHANICAL DATA
Symbol |
Parameter |
Conditions |
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Min. |
Max. |
Units |
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Double side cooled |
dc |
- |
0.018 |
oC/W |
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R |
Thermal resistance - junction to case |
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Anode dc |
- |
0.034 |
oC/W |
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th(j-c) |
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Single side cooled |
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Cathode dc |
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0.038 |
oC/W |
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Clamping force 23.5kN |
Double side |
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0.003 |
oC/W |
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Rth(c-h) |
Thermal resistance - case to heatsink |
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with mounting compound |
Single side |
- |
0.006 |
oC/W |
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Tvj |
Virtual junction temperature |
On-state (conducting) |
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150 |
oC |
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Tstg |
Storage temperature range |
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-55 |
150 |
oC |
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Clamping force |
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21.0 |
25.0 |
kN |
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CHARACTERISTICS
Symbol |
Parameter |
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Conditions |
Typ. |
Max. |
Units |
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V |
Forward voltage |
At 1500A peak, T |
case |
= 25oC |
- |
1.85 |
V |
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FM |
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I |
RRM |
Peak reverse current |
At V |
RRM |
, T = 150oC |
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100 |
mA |
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case |
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trr |
Reverse recovery time |
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5.0 |
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μs |
QRA1 |
Recovered charge (50% chord) |
IF = 1000A, diRR/dt = 100A/μs |
- |
800 |
μC |
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IRM |
Reverse recovery current |
Tcase = 150oC, VR = 100V |
- |
250 |
A |
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K |
Soft factor |
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1.6 |
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- |
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VTO |
Threshold voltage |
At Tvj = 150oC |
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1.1 |
V |
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rT |
Slope resistance |
At Tvj = 150oC |
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0.5 |
mΩ |
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V |
Forward recovery voltage |
di/dt = 1000A/μs, T = 125oC |
- |
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V |
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FRM |
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j |
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2/7
DF051
DEFINITION OF K FACTOR AND QRA1
QRA1 = 0.5x IRR(t1 + t2)
dIR/dt |
t2 |
k = t1/t2 |
t1 |
τ |
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0.5x IRR |
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IRR |
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CURVES
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4000 |
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3500 |
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- (A) |
3000 |
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2500 |
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F |
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current I |
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forward |
2000 |
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Instantaneous |
1500 |
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1000 |
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500 |
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0 |
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Measured under pulse conditions
Tj = 25˚C
Tj = 150˚C 
1.0 2.0 3.0 4.0
Instantaneous forward voltage VF - (V)
Fig.1 Maximum (limit) forward characteristics
3/7
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