Bulletin PD-20242 rev. B 07/03
25CTQ...
25CTQ...S
25CTQ.. -1
SCHOTTKY RECTIFIER
30 Amp
I
F(AV)
= 30Amp
V
R
= 35 to 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
range
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 15 Apk, T
J
=125°C
(per leg)
range
Description/ Features
Units
A
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,
free-wheeling diodes, and reverse battery protection.
150° C T
J
operation
Center tap TO-220 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
25CTQ
30
35 to 45
990
0.50
V
A
V
- 55 to 150
°C
Case Styles
25CTQ...
25CTQ... S
25CTQ... -1
Base
Common
Cathode
2
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
TO-220
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D
2
PAK
TO-262
1
25CTQ... Series
Bulletin PD-20242 rev. B 07/03
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
25CTQ035
35
25CTQ040
40
25CTQ045
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 5
I
FSM
E
AS
I
AR
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg) * See Fig. 7
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
990
250
20
3
A
mJ
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
T
J
= 25 °C, I
AS
= 3 Amps, L = 4.40 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
5µs Sine or 3µs Rect. pulse
25CTQ Units
30
A
Conditions
50% duty cycle @ T
C
= 102 °C, rectangular wave form
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
25CTQ Units
0.56
0.71
0.50
0.64
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 15A
@ 30A
@ 15A
@ 30A
Conditions
T
J
= 25 °C
T
J
= 125 °C
V
R
= rated V
R
I
RM
C
T
L
S
Max. Reverse Leakage Current
(Per Leg) * See Fig. 2
(1)
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
1.75
70
900
8.0
10000
T
J
= 25 °C
T
J
= 125 °C
V
R
= 5V
DC
(test signal range 100Khz to 1Mhz) 25°C
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle <2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
25CTQ Units
-55 to 150
-55 to 150
3.25
1.63
0.50
°C
°C
Conditions
R
thJC
Max. Thermal Resistance Junction
to Case (Per Leg)
R
thJC
Max. Thermal Resistance Junction
to Case (Per Package)
R
thCS
Typical Thermal Resistance, Case
to Heatsink
wt
T
Approximate Weight
Mounting Torque
Min.
Max.
°C/W DC operation
°C/W DC operation
* See Fig. 4
°C/W Mounting surface , smooth and greased
2.0 (0.07) g (oz.)
6 (5)
12 (10)
Kg-cm
(Ibf-in)
2
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25CTQ... Series
Bulletin PD-20242 rev. B 07/03
10
00
10
00
10
0
R v rs C rr n - I (m )
ee e u e t
A
R
1
0
1
.1
.0
1
.0 1
0
0
T =1 0 C
5°
J
1 5C
2°
1 0C
0°
7°
5C
5°
0C
2°
5C
10
0
In ta ta e u F rw rdC rre t - IF (A
s n nos o a
u n
)
5
1 1 2 2 3 3 4 4
0 5 0 5 0 5 0 5
R v rs V lta e- V (V
ee e o g
R )
1
0
T =1 0C
5°
J
J n tio C p c n e- C (p )
u c n a a ita c
F
T
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
10
00
T =1 5C
2°
J
T= 2 °
5C
J
1
T =2 °
5C
J
.1
0
.2
.4
.6
.8
1
1
.2 1
.4 1
.6 1
.8
2
10
0
0
1
0
2
0
3
0
4
0
5
0
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
1
0
T e a Im e a c - Zth C(° /W
h rm l p d n e
C )
J
D=0 0
.5
D=0 3
.3
D=0 5
.2
D=0 7
.1
D=0 8
.0
.1
F rw rdV lta eD p- V (V
o a
o g ro
)
F
M
R v rs V lta e- V (V
ee e o g
R )
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
P
M
D
t
1
t
2
N te :
o s
1 D tyfa to D= t / t
. u
c r
1 2
S g P ls
in le u e
(T e a R s ta c )
h rm l e is n e
2 P a T =P xZ
. ek
+T
J D
M th C C
J
.0
1
.1
1
1
0
10
0
.0
1
.0 1
0
.0 0 1
00
.0 0
01
.0 1
0
t , R c n u r P ls D ra n(S c n s
e ta g la u e u tio
eod)
1
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
25CTQ... Series
Bulletin PD-20242 rev. B 07/03
10
6
A w b C s T m e tu - (° )
llo a le a e e p ra re C
10
5
10
4
10
3
10
2
10
1
10
0
0
D
C
2CQ
5 T
R J (D ) =3 5 C
.2 ° /W
th C C
1
2
D=0 8
.0
D=0 7
.1
1
0
D=0 5
.2
D=0 3
.3
.5
8 D=0 0
6
4
2
0
0 2 4 6 8 1 1 1 1 1 2 2
0 2 4 6 8 0 2
A e g F rw rdC rre t - I
v ra e o a
u n
(A
)
F V
(A )
A e g P w r L s - (W tts
v ra e o e o s
a )
R SL it
M im
D
C
5
1
0
1
5
2
0
5
2
A e g F rw rdC rre t - IF V (A
v ra e o a
u n
(A ) )
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
1000
FSM
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
Non-Repetitive Surge Current - I
(A)
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-S
PEED
S CH
WIT
FR
EE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P460
F
Rg = 25 ohm
Vd = 25 Volt
CURRENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
4
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25CTQ... Series
Bulletin PD-20242 rev. B 07/03
Outline Table
10.54 (0.41)
MAX.
3.78 (0.15)
3.54 (0.14)
15.24 (0.60)
14.84 (0.58)
1 2 3
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
2.04 (0.080) MAX.
1.40 (0.05)
1.15 (0.04)
0.94 (0.04)
0.69 (0.03)
2.89 (0.11)
2.64 (0.10)
0.10 (0.004)
1
2
3
ANODE COMMON ANODE
CATHODE
1
2
1.32 (0.05)
DIA.
6.48 (0.25)
6.23 (0.24)
2°
BASE
COMMON
CATHODE
2
1.22 (0.05)
2.92 (0.11)
2.54 (0.10)
TERM 2
1 2 3
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
10.16 (0.40)
REF.
4.69 (0.18)
4.20 (0.16)
1.32 (0.05)
6.47 (0.25)
15.49 (0.61)
1.22 (0.05)
93°
6.18 (0.24)
14.73 (0.58)
2.61 (0.10)
2.32 (0.09)
8.89 (0.35)
5.28 (0.21)
4.78 (0.19)
0.55 (0.02)
0.46 (0.02)
BASE
COMMON
CATHODE
2
3X
1.40 (0.055)
REF.
0.93 (0.37)
0.69 (0.27)
1.14 (0.045)
2X
MINIMUM RECOMMENDED FOOTPRINT
11.43 (0.45)
1
1
2
3
ANODE COMMON ANODE
CATHODE
1
2
3
4.57 (0.18)
4.32 (0.17)
2
0.61 (0.02) MAX.
5.08 (0.20) REF.
8.89 (0.35)
17.78 (0.70)
3.81 (0.15)
2.08 (0.08)
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
2X
2.54 (0.10)
2X
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