DYNEX DSF2054SF45, DSF2054SF44, DSF2054SF43, DSF2054SF42, DSF2054SF41 Datasheet

DSF20545SF

1/8

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

KEY PARAMETERS

V

RRM

4500V

I

F(AV)

1256A

I

FSM

16000A

Q

r

1250µC

t

rr

7.0µs

CURRENT RATINGS

Symbol Parameter Conditions

Double Side Cooled

I

F(AV)

Mean forward current

I

F(RMS)

RMS value

I

F

Continuous (direct) forward current

Single Side Cooled (Anode side)

I

F(AV)

Mean forward current

I

F(RMS)

RMS value

I

F

Continuous (direct) forward current

UnitsMax.

Half wave resistive load, T

case

= 65oC 1256 A

T

case

= 65oC 1971 A

T

case

= 65oC 1765 A

Half wave resistive load, T

case

= 65oC 995 A

T

case

= 65oC 1552 A

T

case

= 65oC 1335 A

4500
4400
4300
4200
4100
4000

DSF20545SF45
DSF20545SF44
DSF20545SF43
DSF20545SF42
DSF20545SF41
DSF20545SF40

Conditions

V

RSM

= V

RRM

+ 100V

Lower voltage grades available.

Type Number Repetitive Peak

Reverse Voltage

V

RRM

V

Outline type code: CB450.

See Package Details for further information.

DSF20545SF

Fast Recovery Diode

Advance Information

Replaces March 1998 version, DS4152-3.1 DS4152-4.0 January 2000

DSF20545SF

2/8

SURGE RATINGS

Conditions

Max. Units

16 kA

1280 x 10

3

A2sI2t for fusingI2t

Surge (non-repetitive) forward currentI

FSM

ParameterSymbol

10ms half sine; with 0% V

RRM, Tj

= 150oC

12.8 kA

819.2 X 10

3

A2sI2t for fusingI2t

Surge (non-repetitive) forward currentI

FSM

10ms half sine; with 50% V

RRM, Tj

= 150oC

-kA

-A

2

sI

2

t for fusingI2t

Surge (non-repetitive) forward currentI

FSM

10ms half sine; with 100% V

RRM, Tj

= 150oC

THERMAL AND MECHANICAL DATA

dc

Conditions Max. Units

o

C/W- 0.032Anode dc

Clamping force 15kN
with mounting compound

Thermal resistance - case to heatsink

R

th(c-h)

0.004

Double side

-

Single side

Thermal resistance - junction to case

R

th(j-c)

Single side cooled

Symbol

Parameter

- 0.008

o

C/W

o

C/W

Cathode dc

- 0.032

o

C/W

Double side cooled - 0.022

o

C/W

T

stg

Storage temperature range

-55 150

o

C

kN

21.517.5Clamping force-

T

vj

Virtual junction temperature

On-state (conducting) - 150

o

C

Min.

t

rr

50

Symbol Typ. Units

Parameter

V

FM

Forward voltage

I

RRM

Peak reverse current
Reverse recovery time

Q

RA1

Recovered charge (50% chord)

I

RM

Reverse recovery current

K

Soft factor

V

TO

Threshold voltage

r

T

Slope resistance

V

FRM

Forward recovery voltage di/dt = 1000A/µs, Tj = 125oC - 160 V

At Tvj = 150oC - 0.47 mΩ

At Tvj = 150oC - 1.36 V

1.8 - -

- 400 A

- 1250 µC

- 7.0

µs

At V

RRM

, T

case

= 150oC-mA

At 1800A peak, T

case

= 25oC - 2.1 V

Conditions Max.

I

F

= 1000A, diRR/dt = 100A/µs

T

case

= 150oC, VR = 100V

CHARACTERISTICS

DSF20545SF

3/8

CURVES

500

1000

1500

2000

2500

3000

Instantaneous forward current I

F

- (A)

1.0 1.5 2.0 2.5 3.0
Instantaneous forward voltage V

F

- (V)

Measured under pulse conditions

Tj = 150˚C

Tj = 25˚C

3500

4000

Fig.1 Maximum (limit) forward characteristics

DEFINITION OF K FACTOR AND Q

RA1

0.5x I

RR

I

RR

dIR/dt

t

1

t

2

τ

Q

RA1

= 0.5x IRR(t1 + t2)

k = t

1/t2