Document Number: 93291 For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
Revision: 22-Aug-08 1
Schottky Rectifier, 2 x 15 A
25CTQ... Series
Vishay High Power Products
FEATURES
• 150 °C T
J
operation
• Center tap TO-220 package
• 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 industrial 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
I
F(AV)
2 x 15 A
V
R
35 to 45 V
TO-220AB
Anode
13
2
Base
common
cathode
2
Common
cathode
Anode
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
I
F(AV)
Rectangular waveform 30 A
V
RRM
Range 35 to 45 V
I
FSM
t
p
= 5 µs sine 990 A
V
F
15 Apk, T
J
= 125 °C (per leg) 0.50 V
T
J
Range - 55 to 150 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 25CTQ035 25CTQ040 25CTQ045 UNITS
Maximum DC reverse voltage V
R
35 40 45 V
Maximum working peak reverse voltage V
RWM
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum average forward current
See fig. 5
I
F(AV)
50 % duty cycle at T
C
= 102 °C, rectangular waveform 30 A
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
I
FSM
5 µs sine or 3 µs rect. pulse
Following any rated load
condition and with rated
V
RRM
applied
990
A
10 ms sine or 6 ms rect. pulse 250
Non-repetitive avalanche energy per leg E
AS
T
J
= 25 °C, I
AS
= 3.0 A, L = 4.40 mH 20 mJ
Repetitive avalanche current per leg I
AR
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
3A
www.vishay.com For technical questions, contact: diodes-tech@vishay.com
Document Number: 93291
2 Revision: 22-Aug-08
25CTQ... Series
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
V
FM
(1)
15 A
T
J
= 25 °C
0.56
V
30 A 0.71
15 A
T
J
= 125 °C
0.50
30 A 0.64
Maximum reverse leakage current per leg
See fig. 2
I
RM
(1)
T
J
= 25 °C
V
R
= Rated V
R
1.75
mA
T
J
= 125 °C 70
Maximum junction capacitance per leg C
T
V
R
= 5 V
DC
(test signal range 100 kHz to 1 MHz) 25 °C 900 pF
Typical series inductance per leg L
S
Measured lead to lead 5 mm from package body 8.0 nH
Maximum voltage rate of change dV/dt Rated V
R
10 000 V/µs
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
Maximum junction and
storage temperature range
T
J
, T
Stg
- 55 to 150 °C
Maximum thermal resistance,
junction to case per leg
R
thJC
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
R
thCS
Mounting surface, smooth and greased 0.50
Approximate weight
2.0 g
0.07 oz.
Mounting torque
minimum 6 (5)
kgf · cm
(lbf · in)
maximum 12 (10)
Marking device Case style TO-220AB
25CTQ035
25CTQ040
25CTQ045
Document Number: 93291 For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
Revision: 22-Aug-08 3
25CTQ... Series
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 Z
thJC
Characteristics (Per Leg)
1
10
1.80.8 1.2
V
FM
- Forward Voltage Drop (V)
I
F
- Instantaneous Forward Current (A)
100
0.4 1.6
1000
0.1
0.20 0.6 1.0 1.4 2.0
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
0.1
1
10
100
0.01
0.001
0
V
R
- Reverse Voltage (V)
I
R
- Reverse Current (mA)
525354515
1000
10 20 30 40
T
J
= 50 °C
T
J
= 150 °C
T
J
= 75 °C
T
J
= 100 °C
T
J
= 125 °C
T
J
= 25 °C
1000
020 50
100
V
R
- Reverse Voltage (V)
C
T
- Junction Capacitance (pF)
T
J
= 25 °C
10 30 40
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1
t
1
- Rectangular Pulse Duration (s)
Z
thJC
- Thermal Impedance (°C/W)
1 10 100
0.001
Single pulse
(thermal resistance)
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
P
DM
t
1
t
2
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
