DYNEX DF05125, DF05124, DF05122, DF05120 Datasheet

DF051

DF051

Fast Recovery Diode

Advance Information

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

Reverse Voltage

V

RRM

V

DF051 25
DF051 24
DF051 22
DF051 20

2500
2400
2200
2000

Conditions

= V

V

RSM

RRM

+ 100V

KEY PARAMETERS

V
I

F(AV)

I

FSM

Q
t

rr

RRM

r

2500V

1490A

14000A

800µC

5.0µs

Lower voltage grades available.

See Package Details for further information.

CURRENT RATINGS

Symbol Parameter Conditions

Double Side Cooled

I

F(AV)

I

F(RMS)

I

F

Mean forward current

RMS value

Continuous (direct) forward current

Single Side Cooled (Anode side)

I

F(AV)

I

F(RMS)

I

F

Mean forward current

RMS value

Continuous (direct) forward current

Half wave resistive load, T

= 65oC 2340 A

T

case

T

= 65oC 2160 A

case

Half wave resistive load, T

T

= 65oC 1560 A

case

T

= 65oC 1390 A

case

Outline type code: CB450.

= 65oC 1490 A

case

= 65oC 995 A

case

UnitsMax.

1/7

DF051

SURGE RATINGS

ParameterSymbol

FSM

FSM

Surge (non-repetitive) forward currentI

Surge (non-repetitive) forward currentI

THERMAL AND MECHANICAL DATA

Symbol Parameter

R

R

th(j-c)

th(c-h)

Thermal resistance - junction to case

Thermal resistance - case to heatsink

Conditions

10ms half sine; with 0% V

10ms half sine; with 50% V

Conditions Max. Units

Double side cooled

Single side cooled

Clamping force 23.5kN
with mounting compound

= 150oC

RRM, Tj

RRM, Tj

dc

Cathode dc
Double side

Single side

= 150oC

Max. Units

14.0 kA

980 x 10

3

11.2 kA

627 x 10

3

Min.

- 0.018

- 0.038oC/W

0.003

-

- 0.006

A2sI2t for fusingI2t

A2sI2t for fusingI2t

o

C/W

o

C/W- 0.034Anode dc

o

C/W

o

C/W

T

T

stg

Virtual junction temperature

vj

Storage temperature range -55 150

On-state (conducting) - 150

CHARACTERISTICS

Symbol Typ. Units

V

FM

I

RRM

t

rr

Q

RA1

I

RM

Forward voltage

Peak reverse current
Reverse recovery time

Recovered charge (50% chord)
Reverse recovery current

K Soft factor

V

TO

Threshold voltage

Parameter

Conditions Max.

At 1500A peak, T
At V

, T

RRM

= 150oC-mA

case

= 25oC - 1.85 V

case

100

5.0 -

= 1000A, diRR/dt = 100A/µs

I

F

T

= 150oC, VR = 100V

case

- 800 µC

- 250 A

1.6 - -

At Tvj = 150oC - 1.1 V

o

o

kN25.021.0Clamping force-

µs

C
C

2/7

r

T

V

FRM

Slope resistance

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

At T

= 150oC - 0.5 mΩ

vj

DF051

DEFINITION OF K FACTOR AND Q

Q

= 0.5x IRR(t1 + t2)

RA1

dIR/dt

0.5x I

t

1

RR

I

RR

k = t

t

2

1/t2

CURVES

4000

3500

Measured under pulse conditions

RA1

τ

3000

Tj = 25˚C

Tj = 150˚C

- (A)

2500

F

2000

1500

Instantaneous forward current I

1000

500

0 1.0 2.0 3.0 4.0

Instantaneous forward voltage V

- (V)

F

Fig.1 Maximum (limit) forward characteristics

3/7