Bulletin PD-20830 rev. B 05/06
15CTQ...PbF Series
SCHOTTKY RECTIFIER
15 Amp
I
F(AV)
= 15Amp
V
R
= 35/ 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5
μs
sine
V
F
T
J
@ 7.5 Apk, T
J
= 125°C
(per leg)
range
Description/ Features
Units
A
The 15CTQ...PbF center tap Schottky rectifier series has
been optimized for very low forward voltage drop, with mod-
erate leakage. The proprietary barrier technology allows for
reliable operation up to 150°C junction temperature. Typical
applications are in switching power supplies, converters, free-
wheeling diodes, and reverse battery protection.
175° C T
J
operation
Center tap TO-220 package
Low forward voltage drop
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
Values
15
35/ 45
810
0.51
V
A
V
- 55 to 150
°C
Case Styles
15CTQ...PbF
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
TO-220
Document Number: 94139
www.vishay.com
1
15CTQ...PbF Series
Bulletin PD-20830 rev. B 05/06
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
15CTQ035PbF
35
15CTQ040PbF
40
15CTQ045PbF
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
810
145
10
1.5
A
mJ
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5μs Sine or 3μs Rect. pulse
T
J
= 25 °C, I
AS
= 1.20 Amps, L = 11.10 mH
Current decaying linearly to zero in 1
μsec
15CTQ Units
15
A
Conditions
50% duty cycle @ T
C
= 123°C, rectangular wave form
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
15CTQ Units
0.55
0.70
0.51
0.65
0.8
32
400
8.0
10000
V
V
V
V
mA
mA
pF
nH
V/
μs
@ 7.5A
@ 15A
@ 7.5A
@ 15A
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
T
J
= 25 °C
T
J
= 125 °C
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
(1) Pulse Width < 300μs, Duty Cycle <2%
15CTQ Units
-55 to 150
-55 to 150
3.50
1.75
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
T
Approximate Weight
Mounting Torque
Marking Device
°C/W DC operation
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
g (oz.)
Kg-cm
(Ibf-in)
15CTQ045
Document Number: 94139
www.vishay.com
2
15CTQ...PbF Series
Bulletin PD-20830 rev. B 05/06
100
100
T = 150°C
J
125°C
100°C
75°C
R
(mA)
10
Reverse Current - I
1
0.1
50°C
25°C
Instantaneous Forward Current - I F (A)
10
0.01
0.001
0
5
10
15
20
25
30
35
40
45
T = 150°C
J
T = 125°C
J
T = 25°C
J
1
(pF)
Reverse Voltage - V R (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
1000
T
Junction Capacitance - C
T = 25°C
J
0.1
100
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0
10
20
30
40
50
Forward Voltage Drop - V
(V)
FM
Reverse Voltage - V (V)
R
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
Thermal Impedance - Z thJC (°C/W)
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
P
DM
0.1
t
1
t2
Notes:
1. Duty fac tor D = t 1 t 2
/
2. Peak T = P
J
0.01
0.1
1
DM
0.01
Single Pulse
(Thermal Resistance)
0.001
0.00001
0.0001
0.001
xZ
thJC
+T
C
100
10
t , Rectangular Pulse Duration (Seconds)
1
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94139
www.vishay.com
3
15CTQ...PbF Series
Bulletin PD-20830 rev. B 05/06
155
150
145
140
135
130
125
DC
15CTQ
R thJC (DC) = 3.50°C/W
7
6
Average Power Loss - (Watts)
5
4
3
2
1
0
RMS Limit
DC
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
Allowable Case Temperature - (°C)
0
2
4
6
8
10
F(AV)
(A)
12
0
2
4
6
8
10
F(AV)
(A)
12
Average Forward Current - I
Average Forward Current - I
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
1000
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
FSM
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Non-Repetitive Surge Current - I
(A)
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-S
PEED
S CH
WIT
FR
EE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P
F 460
Rg = 25 ohm
Vd = 25 Volt
CURRENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
Document Number: 94139
www.vishay.com
4
15CTQ...PbF Series
Bulletin PD-20830 rev. B 05/06
Outline Table
Conform to JEDEC outline TO-220AB
Part Marking Information
PART NUMBER
IRXC Assembly Line - SubCon Assembly Line
EXAMPLE: THIS IS A 15CTQ045
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
IN THE ASSEMBLY LINE "C"
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
DATE CODE
P = LEAD-FREE
YEAR 1 = 2001
WEEK 19
LINE C
IRMX Assembly Line
EXAMPLE: THIS IS A 15CTQ045
LOT CODE 1789
ASSEMBLED ON WW 19, 2001
INTERNATIONAL
RECTIFIER
LOGO
ASSEMBLY
LOT CODE
PART NUMBER
DATE CODE
YEAR 1 = 2001
WEEK 19
P = LEAD-FREE
Document Number: 94139
www.vishay.com
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