MBR745 datasheet(4/5 Pages) NELLSEMI

Part #	MBR745

Description	Schottky Rectifier, 7.5 A

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Manufacturer	NELLSEMI [Nell Semiconductor Co., Ltd]

Direct Link	http://www.nellsemi.com

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Fig.5 Maximum thermal impedance

characteristics

Rth(j-c)

SEMICONDUCTOR

MBR745 Series RoHS

RoHS

Nell Semiconductors

Rectangular pulse duration, t (s)

1

.

1. Duty Factor D =t /t

1

2

2.Peak T = P

x

+T

J

DM

C

Rth(j-c)

Notes:

t1

t2

PDM

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

Single pulse

(thermal resistance)

10

1

0.1

0.01

0.001

0.00001

0.0001

0.001

0.01

0.1

1

10

Fig.6 Forward power loss characteristics

Average forward current, l

(A)

F(AV)

Fig.7 Maximum non-repetitive surge current

Square wave pulse duration, t

(µs)

p

At any rated load condition

and with rated V

applied

RRM

following surge

1000

100

10

100

1000

10000

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

RMS limit

DC

0

1

2

3

4

5

6

7

0

2

4

6

8

10

12

Note

(1) Formula used:T = T - (Pd+Pd

) x R

;

C

J

REV

thJC

Pd

= lnverse power loss = V

x l (1-D); l at V

= Rated V

REV

R1

R

R1

R

Pd = Forward power loss = l

x V

at (l

/D)(see fig.6);

F(AV)

FM

F(AV)

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