Westcode Semiconductors DF 46 Data Sheet

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STC

E~

SEMICONDUCTORS

,..-

Technical
Publication

OF 46

ISSUE 2

May, 1989

t..

Fast

Recovery

Stud-Base

45 amperes average: up

Ratings

RATING

Average

R.M.S.
D.C. forward current
Peak

non-repetitive

Maximum surge

Operating temperature range
Storage temperature range

(Maximum

forward

current

one-cycle surge

current

12t

values

at

Tj

Diode

to

400 volts V

150°C

CONDITIONS

Half sinewave

10

10

3m.s. sine pulse

unless

. I

m.s.

sine pu

. I { 60% V

m.s.

sine pu

100DC case temperature

se

se

Type

stated

{60%

V

RM

V

RM~

VRM-:S

OOI\JI

1'111YI

otherwise)

V

re-applied max.

RRM

<

10

Volts

re-applied max.

RRM

~

10

Volts

10

volts

PCN/PCR046

SYMBOL

IFIAVI
IFIRMSI
IF

I

111

FSM

I

121

FSM

J2t

111

12t

121

12t

131

Tease

T

stg

-55+

-55+

45A
11SA
11SA
650A

750A

2113A2s
2S00A's

20S0A's

150DC

150DC

Characteristics

CHARACTERISTIC

Peak

forward voltage drop

Forward

Forward
Peak

Thermal resistance

Reverse recovered charge

Reverse recovery time

VOLTAGE CODE

"Repetitive voltage

Non-repetitive

"Maximum

conduction
conduction

reverse current

voltage

heatsink

threshold voltage
slope resistance

to

(Maximum

values

IIFM=1OOA,

\VRM=50V

....

V

RRM

V

RSM

free air thermal resistance

at

Tj

1500C

CONDITIONS

At

135A

IFM

VRM=VRRM (max.)
Junction

Case

to

heatsink

to

case

di/dt=25A//As

02

200

300

for

which repetitive voltage ratings apply

unless

04

400

500

stated

otherwise)

SYMBOL

V

FM
Vo
r

IRRM

Rthlj·el
Rthle-hsl
o,.r

trr

is

7.5DC/W

1.56V

1.15V

3.05mQ
15mA

O.SDC/W

0.1DC/W

4.5j.lC

0.9J.1S

Ordering

5

FIXED

Typical code: SM04PCN046 = 400 V

Information

M

BASIC

CODE

VOLTAGE CODE

(Please

•

(see

above)

stud-base diode

RRM

•

quote

device

p

FIXED OUTLINE BASE POLARITY

with

code

C

CODE

stud cathode

as

explained

N =

R

•

cathode

-anode

below

- 10

0

FIXED TYPE

CODE

digits)

4

6

NOTES

1.

ON

OPERATION

For rectangular wave operation, allowance
be made
case temperature
the average reverse switching dissipation and the
rise in
pulse. Failure
peak temperature rises could result in the failure
of
which
junction

Allowance may
reverse switching

junction

the

device
is assumed

with

regard

to

the

maximum permissible

for

both

the

heating caused by

temperature per reverse power

to

to

recovery.

be

correct

withstand the full reverse voltage

to

be applied

made

power

for

both

for

average and peak

dissipation

average and

at

the

instant

as

follows:

must

of

switching losses has been made.

E/pulse/volt
joules) in
reverse applied voltage.

f

is

the frequency

V

RRM

voltage

AT J /volt
in deg.
voltage per reverse recovery pulse

is

the

reverse energy (in

the

recovery period per

of

operation in

is

the repetitive peak reverse

is the junction temperature rise

C per

volt

of

reverse applied,

volt

Hz

of

CASE(2) = T

T

-ATJ/volt

where: T

u

o

OJ

150

.....

~

co

130

Q;

0.

E

110

~

~

~

90

Ql

j5

'iii

70

'E

&

50

~

30

E 0

£1

120

~

c-

100

.g

co

0.

80 'iii

.,

'5

"E

60

co

~

0

40

-

E

::::J

20

E

'x

co

0

./

E

o

mean forward current, amperes (whole cycle average)

CASEllI

-

(E/pulse/volt)

V

RRM

CASEllI

is the maximum permissible case

temperature

CASE(2)

T
temperature when allowance

~

,,~

~

L:::,

"

~

for

zero reverse losses.

is

the maximum permissible case

~

"'"

!

"-

r'::

"-

1'-

['.,

l'-

f'....

1\

sq.

~

wave

6 phase

L 1 1 3 phase sq,

10

20 30 40 50 60 70 80 90 100

1 phase sine

'I

#'

1 1

,0

Q

/'

3 phase sq. wave

6 phase sq, wave'

/

~./

/..

~

~

p-

~

~

~

10

30 40 50 60 m 80 90 100

f. V

f'-.

f"'..

f'.

....,

'\

1 phase sine wav':l

"

~I

1 1

1 1

~

IL

V

RRM

for

reverse

"-

!'-"

-I

waveL

Rth(J-C)

I:::::,

DC""

V

V

J

1

OC

Rth(J-C) is

2. For sinusoidal operation, the same derating
expression may be
considerable safety factor. The commutation rate
of

forward current may be taken

at

the instant at which the forward current passes

through zero.

80

SQUARE WAVE

~lsOod

70

60

t-

., 40

Ql

&

~

~

a:

...!!-

i

~

~

co

""

~

50

30

20

10

/

V

V

V

I-

k::

r-

0

o

10

forward current, amperes

Figure 2.

V

/'

V

I

.........

_1-"'-

20 30 40 50 60 70 80 90 100

Maximum
current v.

O.8°C/W

used, and will offer a

l---:I-

V

f0-

....-

r-

~

-

..

peak

reverse recovery

forward

I-

r--:

r-

current

as

r

that

-l-

obtaining

dlR/dt,A/l1s

f-

l-

l--

b--

I-

f--

-

300

200

100

50

20

Figure 1. Dissipation and case

v. current, 50Hz

temperature