SCHOTTKY RECTIFIER
35 Amp, 30V
35SCGQ030
The 35SCGQ030 center tap Schottky rectifier has been
expressly designed to meet the rigorous requirements of hi-
rel environments. It is packaged in the hermeticly isolated
TO-254AA package. The device's forward voltage drop
and reverse leakage current are optimized for the lowest
power loss and the highest circuit efficiency for typical high
frequency switching power supplies and resonent power
converters. Full MIL-PRF-19500 quality conformance
testing is available on source control drawings to
TX, TXV and S quality levels.
Hermetically Sealed
Center Tap
Low Forward Voltage Drop
High Frequency Operation
Guard Ring for Enhanced Ruggedness and Long term
Reliability
Lightweight
Major Ratings and Characteristics
Description/Features
06/19/01
CASE STYLE
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1
Characteristics
35SCGQ030 Units
I
F(AV)
35
A
V
RRM
(Per Leg)
30
V
I
FSM
@ tp = 8.3ms half-sine
150
A
(Per Leg)
V
F
@ 17.5Apk, T
J
=125C
0.53
V
(Per Leg)
T
J
, T
stg
Operating and storage
-55 to 150
C
ANODE COMMON ANODE
CATHODE
1
2
3
HIGH EFFICIENCY SERIES
3.7 8 ( .149 )
3.5 3 ( .139 )
-A-
13 .8 4 ( .5 45 )
13 .5 9 ( .5 35 )
6 .6 0 ( .26 0 )
6 .3 2 ( .24 9 )
20 .3 2 ( .8 00 )
20 .0 7 ( .7 90 )
1 3.84 ( .5 45 )
1 3.59 ( .5 35 )
-C-
1.14 ( .04 5 )
0.89 ( .03 5 )
3 .8 1 ( .1 50 )
1 .2 7 ( .0 50 )
1 .0 2 ( .0 40 )
-B-
.12 ( .0 05 )
3X
2X
3.81 ( .15 0 )
1 2 3
17 .4 0 ( .6 85 )
16 .8 9 ( .6 65 )
3 1.40 ( 1.2 35 )
3 0.39 ( 1.1 99 )
.50 ( .0 20 ) M C A M B
.25 ( .0 10 ) M C
L EGE ND
1 - CO LL
2 - E MIT
3 - GA TE
IR Case Style TO-254AA
PD -94229
35SCGQ030
2
www.irf.com
Part number
35SCGQ030
V
R
Max. DC Reverse Voltage (V) (Per Leg)
V
RWM
Max. Working Peak Reverse Voltage (V) (Per Leg)
Voltage Ratings
30
Parameters
Limits Units
Conditions
I
F(AV)
Max. Average Forward Current
35
A
50% duty cycle @ T
C
=108 C, square waveform
See Fig. 5
I
FSM
Max. Peak One Cycle Non - Repetitive
150
A
@ t
p
= 8.3 ms half-sine
Surge Current (Per Leg)
Absolute Maximum Ratings
Q
Pulse Width < 300s, Duty Cycle < 2%
Parameters
Limits
Units
Conditions
T
J
Max.Junction Temperature Range
-55 to 150
C
T
stg
Max. Storage Temperature Range
-55 to 150
C
R
thJC
Max. Thermal Resistance, Junction
1.25
C/W
DC operation
See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance, Junction
0.63
C/W
DC operation
to Case (Per Package)
wt
Weight (Typical)
9.3 g
Die Size (Typical)
150X180 mils
Thermal-Mechanical Specifications
Case Style
TO-254AA
Parameters
Limits
Units
Conditions
V
FM
Max. Forward Voltage Drop
0.63
V
@ 17.5A
T
J
= -55C
(Per Leg) See Fig. 1
Q
0.80
V
@ 35A
0.59
V
@ 17.5A
T
J
= 25C
0.81
V
@ 35A
0.53
V
@ 17.5A
T
J
= 125C
0.84
V
@ 35A
I
RM
Max. Reverse Leakage Current
0.4
mA
T
J
= 25C
(Per Leg) See Fig. 2
Q
66
mA
T
J
= 100C
V
R
= rated V
R
230
mA
T
J
= 125C
C
T
Max. Junction Capacitance (Per Leg)
2635
pF
V
R
= 5V
DC
( 1MHz, 25C )
L
S
Typical Series Inductance (Per Leg)
7.8
nH
Measured from anode lead to cathode lead
6mm ( 0.025 in.) from package
Electrical Specifications
35SCGQ030
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3
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
0
10
20
30
Reverse Voltage -VR (V)
1000
10000
Junction Capacitance - C
T
(pF)
TJ = 25C
0
10
20
30
Reverse Voltage - VR (V)
0.01
0.1
1
10
100
1000
Reverse Current - I
R
( mA )
125C
75C
25C
100C
0.0
0.2
0.4
0.6
0.8
1.0
Forward Voltage Drop - V F (V)
1
10
100
Instantaneous Forward Current - I
F
(A)
Tj = -55C
Tj = 125C
Tj = 25C
35SCGQ030
4
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Fig. 5 - Max. Allowable Case Temperature Vs.
Average Forward Current
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
0.01
0.1
1
10
0.00001
0.0001
0.001
0.01
0.1
1
Notes:
1. Duty factor D = t / t
2. Peak T = P
x Z
+ T
1
2
J
DM
thJC
C
P
t
t
DM
1
2
t , Rectangular Pulse Duration (sec)
Thermal Response
(Z )
1
thJC
0.01
0.02
0.05
0.10
0.20
D = 0.50
SINGLE PULSE
(THERMAL RESPONSE)
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 06/01
0
10
20
30
40
50
60
Average Forward Current - I F(AV) (A)
0
20
40
60
80
100
120
140
160
180
Allowable Case Temprature - (
C)
35SCGQ030
R thJC = 0.63C/W
DC
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