25CTQ...SPbF/25CTQ...-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 15 A
25CTQ...SPbF
25CTQ...-1PbF
FEATURES
•
•
•
•
•
150 °C T
J
operation
Available
Center tap TO-220 package
RoHS*
Very low forward voltage drop
COMPLIANT
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
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for Q101 level
Base
common
cathode
2
Base
common
cathode
2
2
1 Common
3
Anode cathode Anode
2
1 Common
3
Anode cathode Anode
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.
D
2
PAK
TO-262
PRODUCT SUMMARY
I
F(AV)
V
R
2 x 15 A
35 to 45 V
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
I
F(AV)
V
RRM
I
FSM
V
F
T
J
CHARACTERISTICS
Rectangular waveform
Range
t
p
= 5 µs sine
15 Apk, T
J
= 125 °C (per leg)
Range
VALUES
30
35 to 45
990
0.50
- 55 to 150
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V
R
V
RWM
25CTQ035SPbF
25CTQ035-1PbF
35
25CTQ040SPbF
25CTQ040-1PbF
40
25CTQ045SPbF
25CTQ045-1PbF
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average forward current
See fig. 5
Maximum peak one cycle
non-repetitive surge current per leg
See fig. 7
Non-repetitive avalanche energy per leg
Repetitive avalanche current per leg
SYMBOL
I
F(AV)
TEST CONDITIONS
50 % duty cycle at T
C
= 102 °C, rectangular waveform
5 µs sine or 3 µs rect. pulse
I
FSM
10 ms sine or 6 ms rect. pulse
E
AS
I
AR
Following any rated
load condition and with
rated V
RRM
applied
VALUES
30
990
250
20
3
mJ
A
A
UNITS
T
J
= 25 °C, I
AS
= 3 A, L = 4.40 mH
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94174
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
25CTQ...SPbF/25CTQ...-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 15 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
15 A
Maximum forward voltage drop per leg
See fig. 1
V
FM (1)
30 A
15 A
30 A
Maximum reverse leakage current per leg
See fig. 2
Maximum junction capacitance per leg
Typical series inductance per leg
Maximum voltage rate of change
Note
(1)
Pulse width < 300 µs, duty cycle < 2 %
I
RM (1)
C
T
L
S
dV/dt
T
J
= 25 °C
T
J
= 125 °C
TEST CONDITIONS
T
J
= 25 °C
VALUES
0.56
0.71
0.50
0.64
1.75
70
900
8.0
10 000
mA
pF
nH
V/µs
V
UNITS
T
J
= 125 °C
V
R
= Rated V
R
V
R
= 5 V
DC
(test signal range 100 kHz to 1 MHz) 25 °C
Measured lead to lead 5 mm from package body
Rated V
R
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
Maximum junction and
storage temperature range
Maximum thermal resistance,
junction to case per leg
Maximum thermal resistance,
junction to case per package
Typical thermal resistance,
case to heatsink
Approximate weight
minimum
maximum
Case style D
2
PAK
Case style TO-262
SYMBOL
T
J
, T
Stg
DC operation
See fig. 4
DC operation
R
thCS
Mounting surface, smooth and greased
TEST CONDITIONS
VALUES
- 55 to 150
3.25
1.63
0.50
2
0.07
6 (5)
12 (10)
g
oz.
kgf · cm
(lbf · in)
°C/W
UNITS
°C
R
thJC
Mounting torque
Marking device
25CTQ045S
25CTQ045-1
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2
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94174
Revision: 13-Aug-08
25CTQ...SPbF/25CTQ...-1PbF
Schottky Rectifier, 2 x 15 A
Vishay High Power Products
1000
1000
I
R
- Reverse Current (mA)
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
I
F
- Instantaneous
Forward Current (A)
100
10
1
1
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 75 °C
0.1
T
J
= 50 °C
0.01
0.001
T
J
= 25 °C
0.1
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
5
10
15
20
25
30
35
40
45
V
FM
- Forward Voltage Drop (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
V
R
- Reverse Voltage (V)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
1000
C
T
- Junction Capacitance (pF)
T
J
= 25 °C
100
0
10
20
30
40
50
V
R
- Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
Z
thJC
- Thermal Impedance (°C/W)
10
1
P
DM
0.1
t
1
0.01
Single pulse
(thermal resistance)
0.001
0.00001
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
t
2
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.1
1
10
100
0.0001
0.001
0.01
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 94174
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
25CTQ...SPbF/25CTQ...-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 15 A
160
Allowalde Case Temperature (°C)
12
140
130
120
110
100
Average Power Loss (W)
150
25CTQ
R
thJC
(DC) = 3.25 °C/W
10
8
6
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
RMS limit
DC
DC
4
2
0
0
5
10
15
20
25
0
2
4
6
8
10 12 14 16 18 20 22
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
1000
I
FSM
- Non-Repetitive
Surge Current (A)
At any rated load condition
and with rated V
RRM
applied
following surge
100
10
100
1000
10 000
t
p
- Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
L
High-speed
switch
Freewheel
diode
40HFL40S02
+ V
d
= 25 V
D.U.T.
IRFP460
R
g
= 25
Ω
Current
monitor
Fig. 8 - Unclamped Inductive Test Circuit
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4
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94174
Revision: 13-Aug-08
25CTQ...SPbF/25CTQ...-1PbF
Schottky Rectifier, 2 x 15 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
25
1
1
2
3
4
5
6
7
-
-
-
-
-
-
C
2
T
3
Q
4
045
5
S
6
TRL PbF
7
8
Current rating (25 A)
Circuit configuration:
C = Common cathode
T = TO-220
Schottky “Q” series
Voltage ratings
S = D
2
PAK
-1 = TO-262
035 = 35 V
040 = 40 V
045 = 45 V
-
None = Tube (50 pieces)
TRL = Tape and reel (left oriented - for D
2
PAK only)
TRR = Tape and reel (right oriented - for D
2
PAK only)
8
-
None = Standard production
PbF = Lead (Pb)-free
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
Packaging information
SPICE model
http://www.vishay.com/doc?95014
http://www.vishay.com/doc?95008
http://www.vishay.com/doc?95032
http://www.vishay.com/doc?95285
Document Number: 94174
Revision: 13-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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