DYNEX DF45116, DF45114, DF45112, DF45110, DF45108 Datasheet

DF451

DF451

Fast Recovery Diode

Replaces March 1999 version, DS4142-4.0 DS4143-5.0 January 2000

FEATURES

■ Double Side Cooling

■ High Surge Capability

■ Low Recovery Charge

Applications

■ Induction Heating

■ A.C. Motor Drives

■ Inverters And Choppers

■ Welding

■ High Frequency Rectification

■ UPS

Voltage Ratings

Type Number Repetitive Peak

Reverse Voltage

V

RRM

V

DF451 16
DF451 14
DF451 12
DF451 10
DF451 08
DF451 06

1600
1400
1200
1000

800
600

Conditions

= V

V

RSM

RRM

+ 100V

KEY PARAMETERS

V

RRM

I

F(AV)

I

FSM

Q

r

t

rr

Outline type code: M771.

See Package Details for further information.

1600V

295A

3500A

25µC

1.22µs

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 543 A

T

case

T

= 65oC 391 A

case

Half wave resistive load, T

T

= 65oC 348 A

case

T

= 65oC 285 A

case

= 65oC 295 A

case

= 65oC 220 A

case

UnitsMax.

1/8

DF451

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 5.0kN
with mounting compound

= 150oC

RRM, Tj

= 150oC

RRM, Tj

dc
Anode dc
Cathode dc

Double side
Single side

Max. Units

3.5 kA

61.25 x 103A2sI2t for fusingI2t

2.8 kA

39.2 x 103A2sI2t for fusingI2t

-

- 0.07

o

C/W

o

C/W- 0.133

- 0.147oC/W

0.02

-

o

C/W

- 0.02oC/W

T

T

stg

Virtual junction temperature

vj

Storage temperature range –55 150

Forward (conducting) - 150

5.54.5Clamping force-

CHARACTERISTICS

Symbol Typ. Units

V

FM

I

RRM

t

rr

Q

RA1

I

RM

K

V

TO

Forward voltage

Peak reverse current
Reverse recovery time

Recovered charge (50% chord)
Reverse recovery current

Soft factor

Threshold voltage

Parameter

Conditions Max.

At 600A peak, T
At V

, T

RRM

case

= 500A, diRR/dt = -80A/µs

I

F

T

= 125oC, VR = 100V

case

= 25oC - 2.65 V

case

= 125oC-mA

1.22

100

-

-25µC

-40A

1.7 - -

At Tvj = 125oC - 1.6 V

o

o

kN

µs

C
C

2/8

r

T

V

FRM

Slope resistance

At Tvj = 125oC - 1.5 mΩ

Forward recovery voltage di/dt = 1000A/µs, Tj = 125oC-40V

DF451

DEFINITION OF K FACTOR AND Q

CURVES

3000

2500

- (A)

F

Measured under pulse conditions

RA1

dIR/dt

0.5x I

Q

= 0.5x IRR(t1 + t2)

RA1

k = t

t

t

1

2

RR

I

RR

1/t2

τ

2000

Tj = 150˚C

1500

Instantaneous forward current, I

1000

500

2.0 3.0 4.0 5.0 6.0
Instantaneous forward voltage, V

Tj = 25˚C

- (V)

F

Fig.1 Maximum (limit) forward characteristics

3/8