SCHOTTKY RECTIFIER 15 Amp
15CTQ...
15CTQ...S
15CTQ... -1
www.irf.com 1
Bulletin PD-20240 09/00
Major Ratings and Characteristics
IF(AV) Rectangular 15 A
waveform
VRRM range 35 to 45 V
IFSM @ tp = 5 µs sine 810 A
VF@
7.5 Apk, TJ
= 125°C 0.51 V
(per leg)
TJrange - 55 to 150 °C
Characteristics 15CTQ Units
Description/Features
The 15CTQ center tap Schottky rectifier series 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-wheel-
ing diodes, and reverse battery protection.
175° C TJ 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
Case Styles
15CTQ... 15CTQ...S 15CTQ... -1
TO-220 D2PAK TO-262
IF(AV) = 15Amp
VR = 35 to 45V
15CTQ... Series
2
Bulletin PD-20240 09/00
www.irf.com
TJMax. Junction Temperature Range -55 to 150 °C
Tstg Max. Storage Temperature Range -55 to 150 °C
RthJC Max. Thermal Resistance Junction 3.50 °C/W DC operation * See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance Junction 1.75 °C/W DC operation
to Case (Per Package)
RthCS Typical Thermal Resistance, Case 0.50 °C/W Mounting surface , smooth and greased
to Heatsink
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5)
Max. 12 (10)
Thermal-Mechanical Specifications
Kg-cm
(Ibf-in)
VFM Max. Forward Voltage Drop 0.55 V @ 7.5A
(Per Leg) * See Fig. 1 (1) 0.70 V @ 15A
0.51 V @ 7.5A
0.65 V @ 15A
IRM Max. Reverse Leakage Current 0.8 mA TJ = 25 °C
(Per Leg) * See Fig. 2 (1) 32 mA TJ = 125 °C
CTMax. Junction Capacitance (Per Leg) 400 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical 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)
TJ = 25 °C
TJ = 125 °C
Electrical Specifications
(1) Pulse Width < 300µs, Duty Cycle <2%
VR = rated VR
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM applied
Parameters 15CTQ Units Conditions
IF(AV) Max. Average Forward Current 15 A 50% duty cycle @ TC = 123°C, rectangular wave form
* See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive 810 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 145 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 10 mJ TJ = 25 °C, IAS
= 1.20 Amps, L = 11.10 mH
(Per Leg)
IAR Repetitive Avalanche Current 1.5 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
A
Part number 15CTQ035 15CTQ040 15CTQ045
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
35 40 45
Parameters 15CTQ Units Conditions
Parameters 15CTQ Units Conditions
15CTQ... Series
3
Bulletin PD-20240 09/00
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)
0.1
1
10
100
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
FM
F
Instantaneous Forward Current - I (A)
T = 150°C
T = 125°C
T = 25°C
J
J
J
Forward Voltage Drop - V (V)
0.001
0.01
0.1
1
10
100
0 5 10 15 20 25 30 35 40 45
R
R
125°C
100°C
75°C
50°C
25°C
Reverse Current - I (mA)
T = 150°C
J
Reverse Voltage - V (V)
0.001
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10 100
D = 0.33
D = 0.50
D = 0.25
D = 0.17
D = 0.08
1
thJC
t , Rectangular Pulse Duration (Seconds)
Thermal Impedance - Z (°C/W)
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
1
JDM thJC C
2
100
1000
0 1020304050
T = 25°C
J
R
T
Reverse Voltage - V (V)
Junction Capacitance - C (pF)
15CTQ... Series
4
Bulletin PD-20240 09/00
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)
FREE-WHEEL
DIOD E
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SW ITCH
IRFP460
L
DUT
Rg = 25 ohm Vd = 25 Volt
+
100
1000
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)
125
130
135
140
145
150
155
024681012
DC
Allowable Case Temperature - (°C)
F(AV)
15CTQ
R (DC) = 3.50°C/W
thJC
Average Forward Current - I (A)
0
1
2
3
4
5
6
7
024681012
DC
Average Power Loss - (Watts)
F(AV)
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS Limit
Average Forward Current - I (A)
15CTQ... Series
5
Bulletin PD-20240 09/00
www.irf.com
Outline Table
3.78 (0.15)
3.54 (0.14)
10.54 (0.41)
MAX.
DIA.
15.24 (0.60)
14.84 (0.58)
2.92 (0.11)
2.54 (0.10)
1
TERM 2
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
0.94 (0.04)
0.69 (0.03)
4.57 (0.18)
4.32 (0.17)
30.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
6.48 (0.25)
6.23 (0.24)
2°
0.10 (0.004)
1.40 (0.05)
1.15 (0.04)
2.89 (0.11)
2.64 (0.10)
1
3
2.04 (0.080) MAX.
2
2
Dimensions in millimeters and (inches)
Conform to JEDEC outline TO-220AB
2
BASE
COMMON
CATHODE
123
ANODE
COMMON
CATHODE
A
NODE
12
10.16 (0.40)
REF.
8.89 (0.35)
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
13
6.47 (0.25)
6.18 (0.24)
93°
REF.
2.61 (0.10)
2.32 (0.09)
5.28 (0.21)
4.78 (0.19)
4.69 (0.18)
4.20 (0.16)
0.55 (0.02)
0.46 (0.02)
14.73 (0.58)
15.49 (0.61)
1.40 (0.055)
1.14 (0.045)
3X
0.93 (0.37)
0.69 (0.27)
2X
11.43 (0.45)
17.78 (0.70)
8.89 (0.35)
3.81 (0.15)
2.08 (0.08)
2X
2.54 (0.10)
2X
MINIMUM RECOMMENDED FOOTPRINT
2
Dimensions in millimeters and (inches)
Conform to JEDEC outline D2Pak (SMD-220)
2
BASE
COMMON
CATHODE
123
ANODE
COMMON
CATHODE
A
NODE
12
15CTQ... Series
6
Bulletin PD-20240 09/00
www.irf.com
Ordering Information Table
Device Code
15
24
3
1- Essential Part Number
2- Common Cathode
3- T = TO-220
4- Q = Schottky Q Series
5- Voltage Rating
6-S=D
2Pak
6- -1 = TO-262
15 C T Q 045 -1
6
Outline Table
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
2
BASE
COMMON
CATHODE
123
ANODE
COMMON
CATHODE
A
NODE
12
035 = 35V
040 = 40V
045 = 45V
