SCHOTTKY RECTIFIER 12 Amp
12CTQ...S SERIES
www.irf.com 1
PD-2.554 03/98
Major Ratings and Characteristics
IF(AV) Rectangular 12 A
waveform
VRRM range 35 to 45 V
IFSM @ tp = 5 µs sine 690 A
VF@ 6 Apk, TJ
= 125°C 0.53 V
(per leg)
TJrange - 55 to 175 °C
Characteristics 12CTQ...S Units
Description/Features
The 12CTQ...S 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, free-wheeling diodes,
and reverse battery protection.
175° C TJ operation
Center tap D2Pak (SMD-220)
Low forward voltage drop
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Dimensions in millimeters and inches
Conform to JEDEC outline D2Pak (SMD-220)
10.16 (0.40)
REF.
8.89 (0.35)
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) M AX.
5.08 (0.20) REF.
1.32 (0.05)
1.22 (0.05)
13
6.47 (0.25)
6.18 (0.24)
93°
REF.
2.61 (0.10)
2.32 (0.09)
5.28 (0.21)
4.78 (0.19)
4.69 (0.18)
4.20 (0.16)
0.55 ( 0.02)
0.46 ( 0.02)
14.73 (0.58)
15.49 (0.61)
1.40 (0.055)
1.14 (0.045)
3X
0.93 (0.37)
0.69 (0.27)
2X 11.43 ( 0.45)
17.78 (0.70)
8.89 (0.35)
3.81 (0.15)
2.08 (0.08)
2X
2.54 (0.10)
2X
MINIM UM RECOMME NDE D FOOTPR INT
2
2
BASE
COMMON
CATHODE
123
ANODE
COMMON
CATHODE
ANODE
12
D2Pak (SMD-220)
12CTQ...S Series
2
PD-2.554 03/98
www.irf.com
VFM Max. Forward Voltage Drop 0.60 V @ 6A
(Per Leg) * See Fig. 1 ( 1 ) 0.73 V @ 12A
0.53 V @ 6A
0.64 V @ 12A
IRM Max. Reverse Leakage Current 0.8 mA TJ = 25 °C
(Per Leg) * See Fig. 2 ( 1 ) 7. 0 mA TJ = 125 °C
VF(TO) Threshold Voltage 0.35 V TJ = TJ max.
rtForward Slope Resistance 18.23 m
CTMax. Junction Capacitance (Per Leg) 40 0 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance (Per Leg) 8.0 nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change 10,000 V/ µs
(Rated VR)
TJMax. Junction Temperature Range -55 to 175 °C
Tstg Max. Storage Temperature Range -55 to 175 °C
RthJC Max. Thermal Resistance Junction 3.50 °C/W DC operation * See Fig. 4
wt Approximate Weight 2 (0.07) g (oz.)
Case Style D2Pak (SMD-220)
Thermal-Mechanical Specifications
TJ = 25 °C
TJ = 125 °C
Electrical Specifications
(1) Pulse Width < 300µs, Duty Cycle <2%
VR = rated VR
Absolute Maximum Ratings
Following any rated
load condition and with
rated VRRM applied
Parameters 12CTQ...S Units Conditions
IF(AV) Max. Average Forward (Per Leg) 6 A 50% duty cycle @ TC = 160°C, rectangular wave form
Current * See Fig. 5 (Per Device) 12
IFSM Max. Peak One Cycle Non-Repetitive 690 5µs Sine or 3µs Rect. pulse
Surge Current (Per Leg) * See Fig. 7 140 10ms Sine or 6ms Rect. pulse
EAS Non-Repetitive Avalanche Energy 8 mJ TJ
= 25 °C, IAS
= 1.20 Amps, L = 11.10 mH
(Per Leg)
IAR Repetitive Avalanche Current 1.20 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
A
Part number 12CTQ035S 12CTQ040S 12CTQ045S
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
35 40 45
Parameters 12CTQ...S Units Conditions
Parameters 12CTQ...S Units Conditions
12CTQ...S Series
3
PD-2.554 03/98
www.irf.com
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
10
100
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Inst antaneous Forward Curre nt - I (A)
F
T = 175°C
T = 125°C
T = 25°C
J
J
J
FM
Forward Volt age Drop - V (V)
0.0001
0.001
0.01
0.1
1
10
100
0 5 10 15 20 25 30 35 40 45
R
R
T = 175°C
150°C
125°C
100°C
75°C
50°C
25°C
J
Reverse Current - I (mA)
R ev ers e Voltage - V (V )
100
1000
0 1020304050
T = 25°C
J
R
T
Junction Capacitance - C (pF)
Reverse Voltage - V (V)
0.001
0.01
0.1
1
10
0.00001 0.0001 0.001 0.01 0.1 1 10 100
thJC
t , Rectangular Pulse Duratio n (Seconds)
Single Pulse
(Thermal Resista nce)
1
Therm al Impedan ce Z (°C/W)
12
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Notes:
1. Duty factor D = t / t
2. Peak T = P x Z + T
J
DM
thJC C
2
t
1
t
P
DM
12CTQ...S Series
4
PD-2.554 03/98
www.irf.com
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
(2) Formula used: TC = T J - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x V FM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x I R (1 - D); IR @ VR1 = 80% rated VR
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0246810
DC
Ave rag e Power Loss - (Watt s)
F(AV)
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Average Forward Curren t - I (A)
150
155
160
165
170
175
0246810
DC
Allo w a ble Cas e Te mp era t u re - (°C)
F(AV)
see note (2)
Square wave (D = 0.5 0)
80% Rated V applied
R
Average F or ward Current - I (A)
100
1000
10 100 1000 10000
FSM
p
Non-Repet iti ve Surge Current - I (A)
Square Wave Pulse Duration - t (micr osec)
At Any Rated Load Condition
And Wit h Rated V Applied
Foll o wing Su r g e
RRM
FREE-WHEEL
DIODE
40HFL40S02
CURRENT
MONITOR
HIGH-SPEED
SWITCH
IRFP460
L
DUT
Rg = 25 ohm
Vd = 25 Volt
+
12CTQ...S Series
5
PD-2.554 03/98
www.irf.com
Dimensions in millimeters and inches
TRR
FEED DIRECT ION
TRL
F EED D IRECTION
10.90 (0.429)
10.70 (0.421) 16.10 (0.634)
15.90 (0.626)
1.75 (0.069)
1.25 (0.049)
1.85 (0.073)
1.65 (0.065)
4.10 (0.161)
3.90 (0.153)
1.60 (0.063)
1.50 (0.059)
DIA.
1.60 (0.063)
1.50 (0.059)
DIA.
11.60 (0.457)
11.40 (0.449)
15.42 (0.609)
15.22 (0.601)
4.72 (0.186)
4.52 (0.178)
24.30 (0.957)
23.90 (0.941)
0.368 (0.014 5)
0.342 (0.013 5)
360 (1 4.173)
DIA. MAX.
26.40 (1.039)
24.40 (0.961)
13.50 (0.532)
12.80 (0.504)DIA.
60 ( 2.362 )
DIA. MIN.
SMD-220 Tape & Reel
When ordering, indica te the part
number, part orientation, and the
quantit y. Q uantit ies are in m ultiples
of 800 pieces per reel for both
TRL and TRR.
Tape & Reel Information
9G3A
12CTQ045S
9512
EXAMPLE: THIS IS AN 12CTQ045S INTERNATIONAL
RECTIFIER LOGO PART NUMBER
Marking Information
DATE CODE (YYWW)
YY = YEAR
WW = WEEK
ASSEMBLY
LOT CODE
(K)
(A)
(A)