Document Number: 93956 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 22-Aug-08 1
Schottky Rectifier, 2 x 15 A
25CTQ...S/25CTQ...-1
Vishay High Power Products
FEATURES
• 150 °C TJ operation
• Center tap TO-220 package
• Very low forward voltage drop
• High frequency operation
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
• Designed and qualified for Q101 level
DESCRIPTION
The 25CTQ... 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,
freewheeling diodes, and reverse battery protection.
PRODUCT SUMMARY
IF(AV) 2 x 15 A
VR35 to 45 V
25CTQ...S
Base
common
cathode
D
2
PAK TO-262
25CTQ...-1
Anode Anode
Common
cathode
13
2
2
Base
common
cathode
Anode Anode
Common
cathode
13
2
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
IF(AV) Rectangular waveform 30 A
VRRM Range 35 to 45 V
IFSM tp = 5 µs sine 990 A
VF15 Apk, TJ = 125 °C (per leg) 0.50 V
TJRange - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 25CTQ035S
25CTQ035-1
25CTQ040S
25CTQ040-1
25CTQ045S
25CTQ045-1 UNITS
Maximum DC reverse voltage VR35 40 45 V
Maximum working peak reverse voltage VRWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average forward current
See fig. 5 IF(AV) 50 % duty cycle at TC = 102 °C, rectangular waveform 30
A
Maximum peak one cycle
non-repetitive surge current per leg
See fig. 7
IFSM
5 µs sine or 3 µs rect. pulse Following any rated
load condition and with
rated VRRM applied
990
10 ms sine or 6 ms rect. pulse 250
Non-repetitive avalanche energy per leg EAS TJ = 25 °C, IAS = 3 A, L = 4.40 mH 20 mJ
Repetitive avalanche current per leg IAR
Current decaying linearly to zero in 1 µs
Frequency limited by TJ maximum VA = 1.5 x VR typical 3A
www.vishay.com For technical questions, contact: diodes-tech@vishay.com Document Number: 93956
2Revision: 22-Aug-08
25CTQ...S/25CTQ...-1
Vishay High Power Products Schottky Rectifier, 2 x 15 A
Note
(1) Pulse width < 300 µs, duty cycle < 2 %
ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum forward voltage drop per leg
See fig. 1 VFM (1)
15 A TJ = 25 °C 0.56
V
30 A 0.71
15 A TJ = 125 °C 0.50
30 A 0.64
Maximum reverse leakage current per leg
See fig. 2 IRM (1) TJ = 25 °C VR = Rated VR
1.75 mA
TJ = 125 °C 70
Maximum junction capacitance per leg CTVR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 900 pF
Typical series inductance per leg LSMeasured lead to lead 5 mm from package body 8.0 nH
Maximum voltage rate of change dV/dt Rated VR10 000 V/µs
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum junction and
storage temperature range TJ, TStg - 55 to 150 °C
Maximum thermal resistance,
junction to case per leg RthJC
DC operation
See fig. 4 3.25
°C/W
Maximum thermal resistance,
junction to case per package DC operation 1.63
Typical thermal resistance,
case to heatsink RthCS Mounting surface, smooth and greased 0.50
Approximate weight 2g
0.07 oz.
Mounting torque minimum 6 (5) kgf · cm
(lbf · in)
maximum 12 (10)
Marking device
Case style D2PAK
25CTQ035S
25CTQ040S
25CTQ045S
Case style TO-262
25CTQ035-1
25CTQ040-1
25CTQ045-1
Document Number: 93956 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 22-Aug-08 3
25CTQ...S/25CTQ...-1
Schottky Rectifier, 2 x 15 A Vishay High Power Products
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics (Per Leg)
0.1
1
10
100
1000
IF - Instantaneous
Forward Current (A)
VFM - Forward Voltage Drop (V)
0.2 0.6 1.2 1.6 1.8 2.0
1.40.80.40 1.0
TJ = 150 °C
TJ = 125 °C
TJ = 25 °C
0.001
100
10
0.1
0.01
1
1000
IR - Reverse Current (mA)
VR - Reverse Voltage (V)
515 30
40 45
352010025
TJ = 150 °C
TJ = 125 °C
TJ = 100 °C
TJ = 75 °C
TJ = 50 °C
TJ = 25 °C
100
1000
CT - Junction Capacitance (pF)
VR - Reverse Voltage (V)
10 30 4020050
TJ = 25 °C
0.001
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10
t1 - Rectangular Pulse Duration (s)
ZthJC - Thermal Impedance (°C/W)
100
Single pulse
(thermal resistance)
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
PDM
t1
t2
Notes:
1. Duty factor D = t1/t2
2. Peak TJ = PDM x ZthJC + TC
www.vishay.com For technical questions, contact: diodes-tech@vishay.com Document Number: 93956
4Revision: 22-Aug-08
25CTQ...S/25CTQ...-1
Vishay High Power Products Schottky Rectifier, 2 x 15 A
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
100
110
130
140
150
120
160
Allowalde Case Temperature (°C)
IF(AV) - Average Forward Current (A)
5152010025
DC
25CTQ
RthJC (DC) = 3.25 °C/W
0
8
4
2
6
12
10
Average Power Loss (W)
I
F(AV)
- Average Forward Current
(A)
2612 202214 18
16
84
010
DC
RMS limit
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
100
1000
IFSM - Non-Repetitive
Surge Current (A)
tp - Square Wave Pulse Duration (µs)
100 10 000
10 1000
At any rated load condition
and with rated VRRM applied
following surge
Current
monitor
High-speed
switch
D.U.T.
Rg = 25 Ω
+
Freewheel
diode Vd = 25 V
L
IRFP460
40HFL40S02
Document Number: 93956 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 22-Aug-08 5
25CTQ...S/25CTQ...-1
Schottky Rectifier, 2 x 15 A Vishay High Power Products
ORDERING INFORMATION TABLE
1- Current rating (25 A)
2- Circuit configuration:
C = Common cathode
3- T = TO-220
4- Schottky “Q” series
5- Voltage ratings
6- S = D2PAK
-1 = TO-262
7- None = Tube (50 pieces)
TRL = Tape and reel (left oriented - for D2PAK only)
TRR = Tape and reel (right oriented - for D2PAK only)
8- None = Standard production
PbF = Lead (Pb)-free
035 = 35 V
040 = 40 V
045 = 45 V
Device code
51324678
25 C T Q 045 S TRL -
LINKS TO RELATED DOCUMENTS
Dimensions http://www.vishay.com/doc?95014
Part marking information http://www.vishay.com/doc?95008
Packaging information http://www.vishay.com/doc?95032
SPICE model http://www.vishay.com/doc?95285
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
Disclaimer
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Vishay
All product specifications and data are subject to change without notice.
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(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
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document or by any conduct of Vishay.
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