Bulletin PD-20835 11/05
30CTQ...GS
30CTQ...G-1
SCHOTTKY RECTIFIER
30 Amp
I
F(AV)
= 30 Amp
V
R
= 80 - 100V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 15 Apk, T
J
= 125°C
(per leg)
range
Description/ Features
Units
A
V
A
V
This 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 re-
verse battery protection.
175° C T
J
operation
Center tap configuration
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
Values
30
80 - 100
650
0.69
- 55 to 175
°C
Case Styles
30CTQ...GS
30CTQ...G-1
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
1
Anode
2
Common
Cathode
3
Anode
D
2
PAK
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TO-262
1
30CTQ...GS, 30CTQ...G-1
Bulletin PD-20835 11/05
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
30CTQ80GS
30CTQ80G-1
30CTQ100GS
30CTQ100G-1
80
100
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward
Current
I
FSM
E
AS
I
AR
* See Fig. 5
(Per Leg)
(Per Device)
* See Fig. 7
Values
15
30
650
210
7.50
0.50
Units
A
Conditions
50% duty cycle @ T
C
= 129°C, rectangular wave form
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
T
J
= 25 °C, I
AS
= 0.50 Amps, L = 60 mH
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Max. Peak One Cycle Non-Repetitive
Surge Current (Per Leg)
Non-Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
A
mJ
A
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) * See Fig. 1
(1)
Values
0.86
1.05
0.69
0.82
0.28
7.0
500
8.0
10000
Units
V
V
V
V
mA
mA
pF
nH
V/ µs
@ 15A
@ 30A
@ 15A
@ 30A
T
J
= 25 °C
T
J
= 125 °C
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)
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
Values
-55 to 175
-55 to 175
3.25
1.63
0.50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units
°C
°C
°C/W
°C/W
°C/W
g (oz.)
Kg-cm
(Ibf-in)
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
Device Marking
DC operation
DC operation
Mounting surface , smooth and greased
(only for TO-220)
30CTQ...GS
30CTQ...G-1
Case style D
2
-Pak
Case style TO-262
2
www.irf.com
30CTQ...GS, 30CTQ...G-1
Bulletin PD-20835 11/05
1000
100
10
1
0.1
0.01
0.001
0.0001
T
J
= 175°C
150°C
125°C
100°C
75°C
50°C
25°C
Instantaneous Forward Current - I
F
(A)
100
R
everse Current - I
R
(mA)
0
20
40
60
80
100
R
everse Voltage - V
R
(V)
Tj = 175˚C
1000
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Tj = 125˚C
10
Tj = 25˚C
Junction Capacitance - C
T
(pF)
T
J
= 25°C
1
0
0.5
1
1.5
2
2.5
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
10
Thermal Impedanc e Z
thJC
(°C/ W)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
100
0
20
40
60
80
100
R
evers Volta ge - V
R
(V)
e
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
1
P
DM
0.1
t1
0.01
Notes:
S
ingle Pulse
(T
hermal R
esistance)
t2
1. Duty fac tor D = t1 / t 2
2. Peak T = P x Z
thJC
+ T
C
J
DM
0.1
1
10
100
0.001
0.00001
0.0001
0.001
0.01
t 1 , Rec tangular Pulse Duration (S
econds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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3
30CTQ...GS, 30CTQ...G-1
Bulletin PD-20835 11/05
180
Allowab le Case T
emperature - (°C)
7
Average Power Los - (Watts)
s
6
5
4
3
2
1
0
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMSLimit
DC
170
160
150
140
130
80% Ra ted V a pplied
R
120
110
see note (2)
S
qua re wave (D = 0.50)
DC
100
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
Average F
orward Current - I
F(AV)
(A)
Average F
orwa rd Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Non-Repetitive S
urge Current - I
FS
(A)
M
1000
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR P460
F
R = 25 ohm
g
Vd = 25 Volt
CURRENT
MONIT
OR
Fig. 8 - Unclamped Inductive Test Circuit
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 10 V
4
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30CTQ...GS, 30CTQ...G-1
Bulletin PD-20835 11/05
Outline Table
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
Modified JEDEC outline TO-262
Dimensions in millimeters and (inches)
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
Anode
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5
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