DYNEX DF75225, DF75224, DF75222, DF75220 Datasheet

DF752

DF752

Fast Recovery Diode

Replaces March 1998 version, DS4212-3.4 DS4548 - 3.2 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

DF752 25
DF752 24
DF752 22
DF752 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

1050A

12000A
1000µC

6.0µs

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 1660 A

T

case

T

= 65oC 1500 A

case

Half wave resistive load, T

T

= 65oC 1078 A

case

T

= 65oC 933 A

case

Outline type code: M779b.

= 65oC 1050 A

case

= 65oC 686 A

case

UnitsMax.

1/7

DF752

SURGE RATINGS

ParameterSymbol

FSM

FSM

Surge (non-repetitive) forward currentI

Surge (non-repetitive) forward currentI

THERMAL AND MECHANICAL DATA

Symbol

R

th(j-c)

R

th(c-h)

Thermal resistance - junction to case

Thermal resistance - case to heatsink

Parameter

Conditions

10ms half sine; with 0% V

10ms half sine; with 50% V

Conditions Max. Units

Double side cooled

Single side cooled

Clamping force 15kN
with mounting compound

= 150oC

RRM, Tj

= 150oC

RRM, Tj

Min.

dc

- 0.036

Cathode dc - 0.076
Double side

Single side

-

- 0.02oC/W

Max. Units

12.0 kA

720 x 10

3

9.6 kA

460 x 10

3

0.01

A2sI2t for fusingI2t

A2sI2t for fusingI2t

o

C/W

o

C/W- 0.069Anode dc

o

C/W

o

C/W

T

T

stg

Virtual junction temperature

vj

Storage temperature range

On-state (conducting) - 150

-55 175

16.513.5Clamping force-

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 2000A peak, T
At V

, T

RRM

= 150oC-mA

case

= 25oC - 1.8 V

case

60

- 6.0

= 1000A, diRR/dt = 100A/µs

I

F

T

= 150oC, VR = 100V

case

- 1000 µC

- 330 A

---

At Tvj = 150oC - 0.9 V

o

o

kN

µs

C
C

2/7

r

T

V

FRM

Slope resistance

At Tvj = 150oC - 0.45 mΩ

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

DF752

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

5000

4000

- (A)

F

3000

RA1

τ

Measured under pulse
conditions

Tj = 25˚C

Tj = 150˚C

2000

Instantaneuos forward current I

1000

0

0

Instantaneous forward voltage V

1.0

2.0 3.0

F

Fig.1 Maximum (limit) forward characteristics

- (V)

3/7