IF(AV) Rectangular 40 A
waveform
VRRM 35/40/45 V
IFSM @ tp = 5 µs sine 3500 A
VF@ 20 Apk, TJ=125°C 0.43 V
(per leg)
TJ- 55 to 150 °C
Characteristics 40CPQ... Units
Major Ratings and Characteristics Description/ Features
The 40CPQ...PbF center tap Schottky rectifier has been
optimized for very low forward voltage drop, with moderate
leakage. The proprietary barrier technology allows for reliable
operation up to 150° C junction temperature. Typical applica-
tions are in switching power supplies, converters, free-wheeling
diodes, and reverse battery protection.
150° C TJ operation
Center tap TO-247 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
SCHOTTKY RECTIFIER 40 Amp
40CPQ035PbF
40CPQ040PbF
40CPQ045PbF
Bulletin PD-20789 08/04
1www.irf.com
Case Styles
TO-247AC
40CPQ...PbF
Base
Common
Cathode
Anode Anode
Common
Cathode
13
2
12
2
IF(AV) = 40Amp
VR = 35 to 45V
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 08/04
2www.irf.com
IF(AV) Max. Average Forward Current 40 A 50% duty cycle @ TC = 120 °C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 3500 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 430 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 27 mJ TJ = 25 °C, IAS = 4 Amps, L = 3.4 mH
(Per Leg)
IAR Repetitive Avalanche Current 4 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Part number 40CPQ035PbF 40CPQ040PbF 40CPQ045PbF
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V) 35 40 45
TJMax. Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance Junction 1.25 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 0.63 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.24 °C/W Mounting surface , smooth and greased
to Heatsink
wt Approximate Weight 6 (0.21) g (oz.)
T Mounting Torque Min. 6 (5) Non-lubricated threads
Max. 12 (10)
Case Style TO-247AC(TO-3P) JEDEC
Device Marking 40CPQ035
40CPQ040
40CPQ045
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
Parameters 40CPQ... Units Conditions
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM applied
Parameters 40CPQ... Units Conditions
A
VFM Max. Forward Voltage Drop 0.49 V @ 20A
(Per Leg) * See Fig. 1 (1) 0.59 V @ 40A
0.43 V @ 20A
0.56 V @ 40A
IRM Max. Reverse Leakage Current 4 mA TJ = 25 °C
(Per Leg) * See Fig. 2 ( 1) 1 5 0 mA TJ = 125 °C
CTMax. Junction Capacitance (Per Leg) 1850 pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 7.5 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10000 V / µs (Rated VR)
TJ = 25 °C
TJ = 125 °C
VR = rated VR
Parameters 40CPQ... Units Conditions
(1) Pulse Width < 300µs, Duty Cycle <2%
Voltage Ratings
Electrical Specifications
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 08/04
3
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
.1
1
10
100
1000
0.2.4.6.811.21.
4
FM
F
Instantaneous Forward Cu rrent - I (A )
Forward Voltage D rop - V (V)
T = 150°C
T = 125°C
T = 2 5 °C
J
J
J
.001
.01
.1
1
10
100
1000
0 5 10 15 20 25 30 35 40 4
5
R
R
125°C
100°C
75°C
50°C
25°C
R e ve rse V oltage - V (V )
Reverse C urre n t - I (mA)
T = 150°C
J
100
1000
10000
01020304050
T = 25°C
J
R e ve rse Voltage - V (V )
R
T
Junction C apacitance - C (pF)
.001
.01
.1
1
10
.00001 .0001 .001 .01 .1 1 10 100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
thJC
t , R e c tan gula r P u lse D uration (Seconds)
Therma l Impe da n ce - Z (° C/W)
S in g le P u ls e
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1 . D u ty factor D = t / t
2 . P e a k T = P x Z + T
1
JDMthJC C
2
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 08/04
4www.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)
0
2
4
6
8
10
12
14
0 5 10 15 20 25 30
DC
Average P ower Loss - (Watts)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Lim it
Average Forward Curre n t - I (A)
130
135
140
145
150
155
0 5 10 15 20 25 30
DC
Allowable Case Temp eratu re - (° C )
Average Forward Curre n t - I (A )
F(AV)
R (DC) = 1.2 5 °C/W
thJC
100
1000
10000
10 100 1000 10000
FSM
p
Non-Repetitive Surge Current - I (A)
At Any Rated Load Condition
And With Rated V Applied
Following Surge
RRM
Square Wave Pulse Duration - t (microsec)
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWI TCH
IRFP460
L
DUT
Rg = 25 o hm
Vd = 25 Volt
+
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 08/04
5
www.irf.com
Conform to JEDEC outline TO-247AC (TO-3P)
Dimensions in millimeters and (inches)
Outline Table
15.90 (0.626)
15.30 (0.602)
14.20 (0.559)
14.80 (0.583)
3.70 (0.145)
4.30 (0.170)
5.30 (0.208)
5.70 (0.225)
5.50 (0.217)
4.50 (0.177)
(2 PLCS.)
3.55 (0.139)
3.65 (0.144)
2.20 (0.087)
MAX.
1.00 (0.039)
1.40 (0.056)
3.20 (0.126)
MAX. 0.40 (0.213)
0.80 (0.032)
4.70 (0.185)
5.30 (0.209)
1.5 (0.059)
2.5 (0.098)
2.40 (0.095
)
MAX.
5.43 (0.213)
5.47 (0.216)
20.30 (0.800)
19.70 (0.775)
1 2 3
DIA.
Marking Information
Base
Common
Cathode
A
node Anode
Common
Cathode
13
2
12
2
LOT CODE
ASSEMBLY
INTERNATIONAL
RECTIFIER
LOGO
EXAMPLE:
IN ASSEMBLY LINE "H"
ASSEMBLED ON WW 35, 2000
LOT CODE 5657
WITH ASSEMBLY DATE CODE
PART NUMBER
YEAR 0 = 2000
P = LEAD-FREE
WEEK 35
LINE H
56 57
P035H
THIS IS A 40CPQ045 40CPQ045
40CPQ035PbF, 40CPQ040PbF, 40CPQ045PbF
Bulletin PD-20789 08/04
6www.irf.com
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 08/04
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level and Lead-Free.
Qualification Standards can be found on IR's Web site.
40 C P Q 045 PbF
Device Code
152 4
36
1- Current Rating (40 = 40A)
2- Circuit Configuration
C = Common Cathode
3- Package
P = TO-247
4- Schottky "Q" Series
5- Voltage Code
6-! none = Standard Production
! PbF = Lead-Free
Tube Standard Pack Quantity : 25 pieces
Ordering Information Table
03 5 = 35V
04 0 = 40V
045 = 45V
