Document
SCHOTTKY RECTIFIER
Bulletin PD-20240 rev. B 07/06
15CTQ... 15CTQ...S 15CTQ... -1
15 Amp
IF(AV) = 15Amp VR = 35/ 45V
Major Ratings and Characteristics
Characteristics
Values Units
IF(AV) Rectangular waveform
15
A
VRRM range
35 / 45
V
IFSM @ tp = 5 μs sine
810
A
VF @7.5 Apk, TJ = 125°C
0.51
V
(per leg)
TJ range
- 55 to 150
°C
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 applications are in switching power supplies, converters, free-wheeling diodes, and reverse battery protection.
150° 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
15CTQ...
Case Styles 15CTQ... S
15CTQ... -1
Base Common Cathode
2
1 Anode
2 Common Cathode
3 Anode
TO-220
www.irf.com
Base Common Cathode
2
1 Anode
2 Common Cathode
3 Anode
D2PAK
Base Common Cathode
2
1 Anode
2 Common Cathode
3 Anode
TO-262
1
15CTQ... Series
Bulletin PD-20240 rev. B 07/06
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V) VRWM Max. Working Peak Reverse Voltage (V)
15CTQ035
35
15CTQ040
40
15CTQ045
45
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current * See Fig. 5
IFSM Max. Peak One Cycle Non-Repetitive Surge Current (Per Leg) * See Fig. 7
EAS Non-Repetitive Avalanche Energy (Per Leg)
IAR Repetitive Avalanche Current (Per Leg)
15CTQ
15
810 145 10
1.5
Units
Conditions
A 50% duty cycle @ TC = 123°C, rectangular wave form
A
5μs Sine or 3μs Rect. pulse Following any rated load condition and with
10ms Sine or 6ms Rect. pulse rated VRRM applied
mJ TJ = 25 °C, IAS = 1.20 Amps, L = 11.10 mH
A Current decaying linearly to zero in 1 μsec Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
15CTQ Units
Conditions
VFM Max. Forward Voltage Drop (Per Leg) * See Fig. 1 (1)
IRM Max. Reverse Leakage Current (Per Leg) * See Fig. 2 (1)
CT Max. Junction Capacitance(Per Leg) LS Typical Series Inductance (Per Leg) dv/dt Max. Voltage Rate of Change
(Rated VR)
0.55 0.70 0.51 0.65 0.8 32 400 8.0 10,000
V @ 7.5A V @ 15A
TJ = 25 °C
V @ 7.5A V @ 15A
TJ = 125 °C
mA TJ = 25 °C mA TJ = 125 °C
VR = rated VR
pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
nH Measured lead to lead 5mm from package body
V/ μs
(1) Pulse Width < 300μs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
TJ Max. Junction Temperature Range
Tstg Max. Storage Temperature Range
RthJC Max. Thermal Resistance Junction to Case (Per Leg)
RthJC Max. Thermal Resistance Junction to Case (Per Package)
RthCS Typical Thermal Resistance, Case to Heatsink
wt Approximate Weight
T Mounting Torque
Min.
Max.
15CTQ Units
Conditions
-55 to 150 °C
-55 to 150 °C 3.50 °C/W DC operation
* See Fig. 4
1.75 °C/W DC operation
0.50 °C/W Mounting surface , smooth and greased
2 (0.07) 6 (5)
12 (10)
g (oz.)
Kg-cm (Ibf-in)
2
www.irf.com
100
10
TJ= 150°C TJ= 125°C TJ= 25°C 1
Reverse Current - I R (mA)
15CTQ... Series
Bulletin PD-20240 rev. B 07/06
100 TJ = 150°C
10
125°C
100°C 1
75°C
0.1 50°C
0.01
25°C
0.001 0 5 10 15 20 25 30 35 40 45
Reverse Voltage - V R (V)
Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage (Per Leg)
1000
TJ = 25°C
Instantaneous Forward Current - I F (A)
Junction Capacitance - C T (pF)
0.1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Forward Voltage Drop - V FM(V) Fig. 1 - Max. Forward Voltage Drop Characteris-
tics (Per Leg)
10
100 0
10
20
30
40
50
Reverse Voltage - VR(V)
Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg)
Thermal Impedance - Z thJC (°C/W)
D = 0.50 D = 0.33 1 D = 0.25 D = 0.17 D = 0.08 0.1
0.01 Single Pulse
(Thermal Resistance)
PDM
t1 t2
Notes: 1. Duty fac tor D = t 1/ t 2 2. Peak TJ = PDM x ZthJC + TC
0.001
0.00001 0.0001
0.001
0.01
0.1
1
10
100
t 1 , Rectangular Pulse Duration (Seconds) Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
www.irf.com
3
Allowable Case Temperature - (°C) Non-Repetitive Surge Current - I FSM(A)
Average Power Loss - (Watts)
15CTQ... Series
Bulletin PD-20240 rev. B 07/06
155
15CTQ
150
R thJC (DC) = 3.50°C/W
145
140
135
DC
130
7 D = 0.08
6 D = 0.17 D = 0.25 D = 0.33
5 D = 0.50
4
3 RMS Limit
DC
2
1
125
0
2
4
6
8 10 12
0
0
2
4
6
8 10 12
Average Forward Current - I F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature Vs. Average Forward Current (Per Leg)
Average Forward Current - I F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
1000
At Any Rated Load Condition And With Rated VRRM Applied Following Surge
DUT
CURRENT MONITOR
100 10
100
1000
10000
Square Wave P.