Vishay 20CTQ...PbF Series Data Sheet
TO-220AB
Anode
13
2
Base
common
cathode
2
Common
cathode
Anode
Available
Pb-free
RoHS*
COMPLIANT
Vishay High Power Products
Schottky Rectifier, 2 x 10 A
FEATURES
• 175 °C TJ 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
• Lead (Pb)-free (“PbF” suffix)
• Designed and qualified for industrial level
20CTQ...PbF Series
PRODUCT SUMMARY
I
F(AV)
V
R
2 x 10 A
35 to 45 V
The 20CTQ...PbF center tap Schottky rectifier series
has been optimized for low reverse leakage at high
temperature. The proprietary barrier technology allows for
reliable operation up to 175 °C junction temperature. Typical
applications are in switching power supplies, converters,
freewheeling diodes, and reverse battery protection.
MAJOR RATINGS AND CHARACTERISTICS
DESCRIPTION
SYMBOL CHARACTERISTICS VALUES UNITS
I
F(AV)
V
RRM
I
FSM
V
F
T
J
Rectangular waveform 20 A
Range 35 to 45 V
tp = 5 µs sine 1060 A
10 Apk, TJ = 125 °C (per leg) 0.57 V
Range - 55 to 175 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 20CTQ035PbF 20CTQ040PbF 20CTQ045PbF UNITS
Maximum DC reverse voltage V
Maximum working peak reverse voltage V
R
RWM
35 40 45 V
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
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 E
Repetitive avalanche current per leg I
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 94162 For technical questions, contact: diodes-tech@vishay.com
Revision: 01-Sep-08 1
I
F(AV)
I
FSM
AR
50 % duty cycle at TC = 145 °C, rectangular waveform 20
5 µs sine or 3 µs rect. pulse
10 ms sine or 6 ms rect. pulse 265
TJ = 25 °C, IAS = 2.0 A, L = 6.5 mH 13 mJ
AS
Current decaying linearly to zero in 1 µs
Frequency limited by T
maximum VA = 1.5 x VR typical
J
Following any rated load
condition and with rated
V
applied
RRM
1060
2.0 A
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A
20CTQ...PbF Series
Vishay High Power Products
Schottky Rectifier, 2 x 10 A
ELECTRICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
10 A
Maximum forward voltage drop per leg
See fig. 1
V
FM
20 A 0.76
(1)
10 A
20 A 0.68
Maximum reverse leakage current per leg
See fig. 2
I
RM
Maximum junction capacitance per leg C
Typical series inductance per leg L
TJ = 25 °C
(1)
T
= 125 °C 15
J
VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 900 pF
T
Measured lead to lead 5 mm from package body 8.0 nH
S
Maximum voltage rate of change dV/dt Rated V
T
= 25 °C
J
= 125 °C
T
J
V
= Rated V
R
R
R
0.64
0.57
2
10 000 V/µs
Note
(1)
Pulse width < 300 µs, duty cycle < 2 %
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS
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
Mounting torque
minimum 6 (5)
maximum 12 (10)
Marking device Case style TO-220AB
T
, T
J
Stg
DC operation
See fig. 4
R
thJC
- 55 to 175 °C
3.25
DC operation 1.63
R
thCS
Mounting surface, smooth and greased 0.50
2g
0.07 oz.
kgf · cm
(lbf · in)
20CTQ035
20CTQ040
20CTQ045
V
mA
°C/W
www.vishay.com For technical questions, contact: diodes-tech@vishay.com
Document Number: 94162
2 Revision: 01-Sep-08
1
10
0 1.80.8 1.2
VFM - Forward Voltage Drop (V)
I
F
- Instantaneous Forward Current (A)
100
0.4 1.6
1000
TJ = 175 °C
T
J
= 125 °C
T
J
= 25 °C
0.1
0.2 0.6 1.0 1.4
1000
020 50
100
VR - Reverse Voltage (V)
C
T
- Junction Capacitance (pF)
TJ = 25 °C
10 30 40
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1
t1 - 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/t2
2. Peak TJ = PDM x Z
thJC
+ T
C
P
DM
t
1
t
2
D = 0.50
D = 0.33
D = 0.25
D = 0.17
D = 0.08
20CTQ...PbF Series
Schottky Rectifier, 2 x 10 A
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
Vishay High Power Products
1000
100
0.01
- Reverse Current (mA)
R
I
0.001
0.0001
TJ = 175 °C
10
1
TJ = 125 °C
0.1
TJ = 75 °C
0
525354515
Fig. 2 - Typical Values of Reverse Current vs.
TJ = 150 °C
TJ = 100 °C
TJ = 50 °C
TJ = 25 °C
10 20 30 40
VR - Reverse Voltage (V)
Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
Document Number: 94162 For technical questions, contact: diodes-tech@vishay.com
Revision: 01-Sep-08 3
Fig. 4 - Maximum Thermal Impedance Z
Characteristics (Per Leg)
thJC
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