40FDR12A datasheet(4/6 Pages) NELLSEMI

Part #	40FDR12A

Description	Fast Recovery Diodes (Stud Version), 40A

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Manufacturer	NELLSEMI [Nell Semiconductor Co., Ltd]

Direct Link	http://www.nellsemi.com

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SEMICONDUCTOR

RoHS

Nell High Power Products

Page 4 of 6

www.nellsemi.com

70

50

60

30

40

10

0

20

Fig.2 Current rating nomogram (Sinusoidal Waveforms)

Average forward current (A)

Maximum allowable ambient temperature (°C)

0

5

10

15

20

25

30

35

40 10 20 30 40 50 60 70 80 90 100

▲

1.0

-

R

▲

1.5

-

R

▲

2.0

-

R

▲

3-

R

▲

4- R

▲

5- R

▲

Conduction Angle

RMS Limit

90°

60°

120°

ø = 180°

40 FD( R) Se ries

T = 125°C

J

120°

60°

180°

30°

0.15

0.31

0.14

0.52

90°

0.20

dlF

dt

lF

lFM

lF

1/4 lRM(REC)

lRM(REC)

QRR

t

trr

l ,l

= Peak forward current prior to commutation

F FM

d

/d = Rate of fall of forward current

lF

t

l

= Peak reverse recovery current

RM(REC)

t

= Reverse recovery time

rr

Q

= Reverse recovered charge

RR

Fig.1 Reverse recovery time test waveform

10 20 30 40

70

50

80

100

90

60

70

50

60

30

40

10

0

20

80

90

100

70

50

60

30

40

10

0

20

40FD(R)Series

T = 125°C

J

ø

Conduction Angle

Fig. 3 Current rating nomogram (Rectangular waveforms)

Average forward current (A)

Maximum allowable ambient temperature (°C)

120°

180°

ø = DC

60°

RMS Limit

▲

R

= 0

.3

-

R

K

/W

th

S

A

▲

0.5

-

R

▲

0.7

-

R

▲

1.0

-

R

▲

1.5

-

R

▲

2. 0-

R

▲

3- R

▲

4- R

▲

180°

120°

DC

60°

0.08

0.14

0

030

30°

40FD(R)Series

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40FDR12A Datasheet(PDF) 4 Page - Nell Semiconductor Co., Ltd

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