12CTQ datasheet(4/8 Pages) IRF

4 / 8 page

12CTQ... Series

Bulletin PD-20554 rev. B 07/01

www.irf.com

Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current (Per Leg)

Fig. 8 - Unclamped Inductive Test Circuit

Fig. 6 - Forward Power Loss Characteristics

(Per Leg)

(2) Formula used: T

C = TJ - (Pd + PdREV) x RthJC ;

Pd = Forward Power Loss = I

F(AV) x VFM @ (IF(AV) / D) (see Fig. 6);

REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR

0.5

1.5

2.5

3.5

4.5

024

F(A V)

RM S Lim it

D = 0.20

D = 0.25

D = 0.33

D = 0.50

D = 0.75

A ve ra g e Forw ard C urren t - I

(A)

15 0

15 5

16 0

16 5

17 0

17 5

024

F(A V)

see n ote (2)

Sq ua re wa ve (D = 0.50)

80% Ra te d V

a p p lied

A ve ra g e Forw ard C urre n t - I

(A )

100

10 0 0

1 0 0

1 00 0

10 0 00

Sq uare W ave Pulse D uration - t

(m ic rose c )

At An y Rate d Load C ond ition

An d W ith Rate d V

A pp lie d

Follow in g Surg e

RRM

FR EE-W HE EL

D IO D E

40H FL40S02

CUR RE N T

MO N ITO R

HIG H -SPE ED

SW ITC H

IRFP460

DUT

Rg = 25 ohm

Vd = 25 V olt

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