DYNEX DSF2054SF45, DSF2054SF44, DSF2054SF43, DSF2054SF42, DSF2054SF41 Datasheet
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DSF20545SF
DSF20545SF
Fast Recovery Diode
Replaces March 1998 version, DS4152-3.1 |
DS4152-4.0 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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DSF20545SF45 |
4500 |
VRSM = VRRM + 100V |
DSF20545SF44 |
4400 |
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DSF20545SF43 |
4300 |
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DSF20545SF42 |
4200 |
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DSF20545SF41 |
4100 |
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DSF20545SF40 |
4000 |
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Lower voltage grades available.
KEY PARAMETERS
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VRRM |
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4500V |
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IF(AV) |
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1256A |
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IFSM |
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16000A |
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Qr |
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1250μC |
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trr |
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7.0μs |
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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 |
1256 |
A |
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F(AV) |
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I |
RMS value |
T |
case |
= 65oC |
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1971 |
A |
F(RMS) |
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I |
Continuous (direct) forward current |
T |
case |
= 65oC |
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1765 |
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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1552 |
A |
F(RMS) |
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I |
Continuous (direct) forward current |
T |
case |
= 65oC |
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1335 |
A |
F |
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1/8
DSF20545SF
SURGE RATINGS
Symbol |
Parameter |
Conditions |
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Max. |
Units |
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IFSM |
Surge (non-repetitive) forward current |
10ms half sine; with 0% VRRM, Tj = 150oC |
16 |
kA |
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I2t |
I2t for fusing |
1280 x 103 |
A2s |
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IFSM |
Surge (non-repetitive) forward current |
10ms half sine; with 50% VRRM, Tj = 150oC |
12.8 |
kA |
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I2t |
I2t for fusing |
819.2 X 103 |
A2s |
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IFSM |
Surge (non-repetitive) forward current |
10ms half sine; with 100% V |
T |
= 150oC |
- |
kA |
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I2t |
I2t for fusing |
RRM, |
j |
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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 |
- |
0.022 |
oC/W |
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R |
Thermal resistance - junction to case |
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Anode dc |
- |
0.032 |
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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0.032 |
oC/W |
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Clamping force 15kN |
Double side |
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0.004 |
oC/W |
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Rth(c-h) |
Thermal resistance - case to heatsink |
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with mounting compound |
Single side |
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0.008 |
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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17.5 |
21.5 |
kN |
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CHARACTERISTICS
Symbol |
Parameter |
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Conditions |
Typ. |
Max. |
Units |
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VFM |
Forward voltage |
At 1800A peak, Tcase = 25oC |
- |
2.1 |
V |
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I |
Peak reverse current |
At V |
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case |
= 150oC |
- |
50 |
mA |
RRM |
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RRM |
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trr |
Reverse recovery time |
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- |
7.0 |
μs |
QRA1 |
Recovered charge (50% chord) |
IF = 1000A, diRR/dt = 100A/μs |
- |
1250 |
μC |
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IRM |
Reverse recovery current |
Tcase = 150oC, VR = 100V |
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400 |
A |
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K |
Soft factor |
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1.8 |
- |
- |
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VTO |
Threshold voltage |
At Tvj = 150oC |
- |
1.36 |
V |
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r |
Slope resistance |
At T |
vj |
= 150oC |
- |
0.47 |
mΩ |
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T |
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VFRM |
Forward recovery voltage |
di/dt = 1000A/μs, Tj = 125oC |
- |
160 |
V |
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2/8
DSF20545SF
DEFINITION OF K FACTOR AND QRA1
QRA1 = 0.5x IRR(t1 + t2)
dIR/dt |
k = t |
1 |
/t |
t1 |
t2 |
2 |
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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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F |
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I |
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currentforward |
2500 |
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Instantaneous |
2000 |
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1500 |
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1000 |
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500 |
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1.0 |
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Measured under pulse conditions
Tj = 150˚C
Tj = 25˚C
1.5 2.0 2.5 3.0
Instantaneous forward voltage VF - (V)
Fig.1 Maximum (limit) forward characteristics
3/8
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