PD-20543 rev.

B 11/99

42CTQ030
42CTQ030S
42CTQ030-1
SCHOTTKY RECTIFIER 40 Amp

Major Ratings and Characteristics Description/Features

This center tap Schottky rectifier has been optimized for very
Characteristics Values Units low forward voltage drop, with moderate leakage. The
proprietary barrier technology allows for reliable operation up to
IF(AV) Rectangular 40 A 150° C junction temperature. Typical applications are in
switching power supplies, converters, free-wheeling diodes,
waveform
and reverse battery protection.
VRRM 30 V 150° C TJ operation
Center tap configuration
IFSM @ tp = 5 µs sine 1100 A
Very low forward voltage drop
High purity, high temperature epoxy encapsulation for
VF @ 20 Apk, TJ = 125°C 0.38 V enhanced mechanical strength and moisture resistance
(per leg) High frequency operation
TJ range - 55 to 150 °C Guard ring for enhanced ruggedness and long term
reliability

Case Styles

42CTQ030 42CTQ030S 42CTQ030-1

TO-220 D2PAK TO-262

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42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99

Voltage Ratings
42CTQ030
Parameters 42CTQ030S
42CTQ030-1
VR Max. DC Reverse Voltage (V)
30
VRWM Max. Working Peak Reverse Voltage (V)

Absolute Maximum Ratings

Parameters Values Units Conditions
IF(AV) Max. Average Forward (Per Leg) 20 A 50% duty cycle @ TC = 121°C, rectangular wave form
Current * See Fig. 5 (Per Device) 40
IFSM Max. Peak One Cycle Non-Repetitive 1100 5µs Sine or 3µs Rect. pulse Following any rated
A load condition and with
Surge Current (Per Leg) * See Fig. 7 360 10ms Sine or 6ms Rect. pulse rated V RRM applied
EAS Non-Repetitive Avalanche Energy 13 mJ TJ = 25 °C, IAS = 3 Amps, L = 2.90 mH
(Per Leg)
IAR Repetitive Avalanche Current 3 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by T J max. VA = 1.5 x VR typical

Electrical Specifications
Parameters Values Units Conditions
VFM Max. Forward Voltage Drop 0.48 V @ 20A
TJ = 25 °C
(Per Leg) * See Fig. 1 (1) 0.57 V @ 40A
0.38 V @ 20A
TJ = 125 °C
0.51 V @ 40A
IRM Max. Reverse Leakage Current 3 mA TJ = 25 °C
VR = rated VR
(Per Leg) * See Fig. 2 (1) 183 mA TJ = 125 °C
VF(TO) Threshold Voltage 0.22 V TJ = T J max.
rt Forward Slope Resistance 6.76 mΩ
CT Max. Junction Capacitance (Per Leg) 2840 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LS Typical Series Inductance (Per Leg) 8.0 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10,000 V/ µs
(Rated VR )
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters Values Units Conditions
TJ Max. Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance Junction 2.0 °C/W DC operation
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 1.0 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.50 °C/W Mounting surface , smooth and greased
to Heatsink (only for TO-220)
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5) Kg-cm
Max. 12 (10) (Ibf-in)

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 42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99
10 0 0
10 0 0

T J = 1 5 0 °C
1 00

R e v e r se C u rre n t - I R (m A )
1 2 5 °C

1 0 0 °C
10
75° C
1
50° C

25° C
In st a n ta n e o us Fo r w a r d C u rre n t - I F (A )

0 .1
1 00

0 .0 1
0 5 10 15 20 25 30
R e v e r se V o lt a g e - V R (V )

Fig. 2 - Typical Values Of Reverse Current

Vs. Reverse Voltage (Per Leg)
1 0 0 00
Ju n c t io n C a p a c ita n c e - C T (p F )

T J= 1 5 0 °C
10
T J= 1 2 5 °C T J= 2 5 ° C

T J= 2 5 °C

1 0 00

1 10 0
0 0 .2 0 .4 0 .6 0 .8 1 1 .2 1 .4 1 .6 1 .8 0 5 10 15 20 25 30 35
Fo rw a rd V o lta g e D ro p - V F M (V ) R e v e rse V o lt a g e - V R (V )
Fig. 1 - Max. Forward Voltage Drop Characteristics Fig. 3 - Typical Junction Capacitance
(Per Leg) Vs. Reverse Voltage (Per Leg)
10
Th e rm al Im pe d an c e Z th JC ( °C / W )

D = 0 .75
1 D = 0 .50
D = 0 .33
D = 0 .25 PD M
D = 0 .20

t
1
0 .1 t2
N o t e s:
Sing le P uls e 1 . D u t y fa c t o r D = t 1 / t 2
(Therm a l Resis ta nce)
2 . P e a k T J = P D M x Z th JC+ T C
0 .0 1
0 .0 0 0 0 1 0 .0 0 0 1 0 .0 0 1 0 .0 1 0 .1 1 10 1 00
t 1 , R ectan gula r Pul se Dur ation (Secon ds )
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)

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42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99

15 0 16
D = 0 .2 0
A llo w a ble C a se T e m p e r at u re - ( °C )

D = 0 .2 5

A v e ra g e P o w e r Lo ss - (W a tt s)
14 0 D = 0 .3 3
DC 12 D = 0 .5 0
D = 0 .7 5
13 0

8 R M S Lim it DC
12 0 Sq u a re w a v e ( D = 0 .5 0 )
8 0 % R a t e d V R a p p lie d

4
11 0

se e no te (2 )
10 0 0
0 5 10 15 20 25 30 0 5 10 15 20 25 30
A v e ra g e Fo rw a rd C u rre n t - I F(A V) ( A ) A v e ra g e Fo rw a rd C u rre n t - I F( AV ) (A )

Fig. 5 - Max. Allowable Case Temperature Fig. 6 - Forward Power Loss Characteristics
Vs. Average Forward Current (Per Leg) (Per Leg)
1 00 0
(A )
FSM
N o n - Re p e tit iv e S u rg e C u rre n t - I

A t A n y R a t e d Lo a d C o n d it io n
A n d W ith R a t e d V RR M A pp lie d
Fo llo w in g Su rg e

10 0
10 100 1 0 00 1 00 00
Sq u a re W a v e P u lse D ura t io n - t p (m ic ro se c )
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)

H IG H - SP E E D
D UT IRFP4 60 SW IT C H

FR E E - W H E E L
Rg = 25 ohm V d = 2 5 V o lt
D IO D E +

C UR R E N T 40 HFL4 0 S02
M O N IT O R

Fig. 8 - Unclamped Inductive Test Circuit

(2) Formula used: TC = TJ - (Pd + PdREV) x R thJC ;

Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
Pd REV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 10 V

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 42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99

Ordering Information Table

Device Code

42 C T Q 030 -1

1 2 3 4 5 6

1 - Essential Part Number

2 - C = Common Cathode
3 - T = TO-220
4 - Q = Schottky Q Series
5 - Voltage Rating 030 = 30V
6 - 1 = TO-262
S = D2Pak

Outline Table
10.54 (0.41)
1.32 (0.05)
MAX. 3.78 (0.15)
DIA. 1.22 (0.05)
3.54 (0.14)
6.48 (0.25)
2.92 (0.11) 6.23 (0.24)
15.24 (0.60)
2.54 (0.10)
14.84 (0.58) TERM 2
2°
1 2 3

14.09 (0.55) 3.96 (0.16)

13.47 (0.53) 3.55 (0.14) 0.10 (0.004)

2.04 (0.080) MAX.

BASE
1.40 (0.05) 2.89 (0.11) COMMON
CATHODE
1.15 (0.04) 2.64 (0.10) 2
0.94 (0.04)
0.69 (0.03)

1 2 3

ANODE COMMON ANODE

1 CATHODE 2
1 2 3 0.61 (0.02) MAX.
4.57 (0.18)
4.32 (0.17)
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
5.08 (0.20) REF.

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42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99

Outline Table
1 0 . 1 6 ( 0 .4 0 )
4 .6 9 (0 .1 8 )
REF . 4 .2 0 ( 0 .1 6 )
1 .3 2 ( 0 .0 5)

6 .4 7 ( 0 .2 5 ) 1 .2 2 (0 .0 5 )

1 5 . 4 9 (0 . 6 1 )
93° 6 . 1 8 ( 0 .2 4 )
1 4 .7 3 (0 .5 8 ) 5 . 2 8 (0 . 2 1 )
2 .6 1 ( 0 .1 0 )
2 .3 2 ( 0 .0 9 ) 4 . 7 8 (0 . 1 9 )

8 .8 9 ( 0 .3 5) 0 .5 5 ( 0 .0 2 )
RE F. 0 .4 6 ( 0 .0 2 )
1 . 4 0 (0 . 0 5 5 )
3X
1 .1 4 (0 .0 4 5 ) 0 .9 3 ( 0 .3 7)
BASE M IN IM U M R E C O M M E N D E D F OO T P R IN T
COMM ON 2X
CA TH ODE 0 .6 9 ( 0.2 7 )
2
1 1 .4 3 ( 0 .4 5 )

1 3
4 .5 7 ( 0 .1 8)
1 2 3 8 .8 9 ( 0 .3 5)
AN OD E COMM ON
4 .3 2 (0 .1 7 )
AN OD E
1 CA TH ODE 2 2 1 7 .7 8 ( 0 .7 0 )
0 . 6 1 (0 . 0 2 ) M A X .

5 . 0 8 (0 . 2 0 ) R E F . 3 .8 1 (0 .1 5 )

2 .0 8 (0 . 0 8 )
Conform to JEDEC outline D2Pak (SMD-220) 2X 2 .5 4 ( 0 .1 0 )
Dimensions in millimeters and (inches)
2X

Tape & Reel Information

TR R
1.60 (0.063)
1.50 (0.059)
1.60 (0.063)
4.10 (0.161) D IA.
1.50 (0.059)
3.90 (0.153) 0.368 (0.014 5)
0.342 (0.013 5)
F EE D D IR EC T ION 1.85 (0 .07 3)
11 .60 (0.457)
1.65 (0 .06 5)
11 .40 (0.449) 24 .30 (0 .957)
15.42 (0.6 09)
23 .90 (0 .941)
TR L 15.22 (0.6 01)

1.75 (0.06 9)
D IA .
10 .90 (0.429) 1.25 (0.04 9) 4.72 (0.18 6)
10 .70 (0.421) 16 .10 (0.6 34) 4.52 (0.17 8)
15 .90 (0.6 26)

FE ED D IR E C TION

13.50 (0.5 32) 26.40 (1.0 39)

12.80 (0.5 04) D IA. 24.40 (0.9 61)

SM D -220 Tap e & R eel

W hen ordering, indic ate th e part
num ber, part orientation, and t he
quantity. Qu antitie s are in multiples
of 800 p iece s per reel fo r bo th
60 (2.36 2) T R L and T R R .
360 (1 4.173)
D IA . M IN .
D IA . M AX .

Dimensions in millimeters and (inches)

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 42CTQ030, 42CTQ030S, 42CTQ030-1
PD-20543 rev. B 11/99

Outline Table

Modified JEDEC outline TO-262

Dimensions in millimeters and (inches)

BASE
COMMON
CATHODE
2

1 2 3

ANODE COMMON ANODE

1 CATHODE 2

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http://www.irf.com Fax-On-Demand: +44 1883 733420 Data and specifications subject to change without notice.

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