Document Number: 93214 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 06-Oct-08 1
Schottky Rectifier, 2 x 6 A
12CTQ... Series
Vishay High Power Products
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
• Designed and qualified for industrial level
DESCRIPTION
The 12CTQ... 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.
PRODUCT SUMMARY
IF(AV) 2 x 6 A
VR35 to 45 V
TO-220AB
Anode
13
Common
cathode
Base
common
cathode
2
Anode
2
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL CHARACTERISTICS VALUES UNITS
IF(AV) Rectangular waveform 12 A
VRRM Range 35 to 45 V
IFSM tp = 5 µs sine 690 A
VF6 Apk, TJ = 125 °C (per leg) 0.53 V
TJRange - 55 to 175 °C
VOLTAGE RATINGS
PARAMETER SYMBOL 12CTQ035 12CTQ040 12CTQ045 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
per leg
IF(AV) 50 % duty cycle at TC = 160 °C, rectangular waveform
6
A
per device 12
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
690
A
10 ms sine or 6 ms rect. pulse 140
Non-repetitive avalanche energy per leg EAS TJ = 25 °C, IAS = 1.20 A, L = 11.10 mH 8 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 1.20 A
www.vishay.com For technical questions, contact: diodes-tech@vishay.com Document Number: 93214
2Revision: 06-Oct-08
12CTQ... Series
Vishay High Power Products Schottky Rectifier, 2 x 6 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)
6 A TJ = 25 °C 0.60
V
12 A 0.73
6 A TJ = 125 °C 0.53
12 A 0.64
Maximum reverse leakage curent per leg
See fig. 2 IRM (1) TJ = 25 °C VR = Rated VR
0.8 mA
TJ = 125 °C 7.0
Threshold voltage VF(TO) TJ = TJ maximum 0.35 V
Forward slope resistance rt18.23 mΩ
Maximum junction capacitance per leg CTVR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 400 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 175 °C
Maximum thermal resistance,
junction to case per leg RthJC
DC operation
See fig. 4 3.50
°C/W
Maximum thermal resistance,
junction to case per package DC operation 1.75
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 TO-220AB
12CTQ035
12CTQ040
12CTQ045
Document Number: 93214 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 06-Oct-08 3
12CTQ... Series
Schottky Rectifier, 2 x 6 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)
1
10
100
IF - Instantaneous Forward
Current (A)
VFM - Forward Voltage Drop (V)
0.4 0.81.2 1.61.41.00.60.2
TJ = 175 °C
TJ = 125 °C
TJ = 25 °C
IR - Reverse Current (mA)
VR - Reverse Voltage (V)
0 102030 45
0.0001
0.01
0.1
1
10
100
540
0.001
352515
TJ = 175 °C
TJ = 150 °C
TJ = 125 °C
TJ = 100 °C
TJ = 75 °C
TJ = 50 °C
TJ = 25 °C
CT - Junction Capacitance (pF)
VR - Reverse Voltage (V)
0 20304050
100
1000
10
TJ = 25 °C
ZthJC - Thermal Impedance (°C/W)
0.001
0.01
0.1
1
10
t1 - Rectangular Pulse Duration (s)
0.00001 0.0001 0.001 0.01 0.1 1 10 100
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Single pulse
(thermal resistance)
.
.
PDM
t1
t2
Notes:
1. Duty factor D = t1/t2
2. Peak TJ = PDM x ZthJC + TC
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4Revision: 06-Oct-08
12CTQ... Series
Vishay High Power Products Schottky Rectifier, 2 x 6 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
Note
(1) Formula used: TC = TJ - (Pd + PdREV) x RthJC;
Pd = Forward power loss = IF(AV) x VFM at (IF(AV)/D) (see fig. 6);
PdREV = Inverse power loss = VR1 x IR (1 - D); IR at VR1 = 80 % rated VR
Allowable Case Temperature (°C)
IF(AV) - Average Forward Current (A)
08104
150
155
160
165
170
175
See note (1)
Square wave (D = 0.50)
80 % rated VR applied
DC
26
0
Average Power Loss - (W)
I
F(AV)
- Average Forward Current (A)
046 10
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
DC
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
28
I
FSM
- Non-Repetitive Surge Current (A)
t
p
- Square Wave Pulse Duration (µs)
100
1000
10 100 1000 10 000
At any rated load condition
and with rated V applied
following surge RRM
Current
monitor
High-speed
switch
D.U.T.
Rg = 25 Ω
+
Freewheel
diode Vd = 25 V
L
IRFP460
40HFL40S02
Document Number: 93214 For technical questions, contact: diodes-tech@vishay.com www.vishay.com
Revision: 06-Oct-08 5
12CTQ... Series
Schottky Rectifier, 2 x 6 A Vishay High Power Products
ORDERING INFORMATION TABLE
1- Current rating (12 = 12 A)
2
- Package:
- Circuit configuration:
C = Common cathode
T = TO-220
3
- Schottky “Q” series
4
- Voltage ratings
5
6- None = Standard production
PbF = Lead (Pb)-free
Tube standard pack quantity: 50 pieces
035 = 35 V
040 = 40 V
045 = 45 V
Device code
51324
6
12 C T Q 045 -
LINKS TO RELATED DOCUMENTS
Dimensions http://www.vishay.com/doc?95222
Part marking information http://www.vishay.com/doc?95225
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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