SCHOTTKY RECTIFIER
35 Amp, 45V
35CGQ045
The 35CGQ045 center tap Schottky rectifier has been
expressly designed to meet the rigorous requirements of hi-
rel environments. It is packaged in the hermetic 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
10/04/01
CASE STYLE
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1
Characteristics
35CGQ045 Units
I
F(AV)
35
A
V
RRM
(Per Leg)
45
V
I
FSM
@ tp = 8.3ms half-sine 200
A
(Per Leg)
V
F
@ 35Apk, T
J
=125C
0.94
V
(Per Leg)
T
J
, T
stg
Operating and storage
-55 to 150
C
ANODE COMMON ANODE
CATHODE
1
2
3
HIGH EFFICIENCY SERIES
IR Case Style TO-254AA
6.60 [.260]
6.32 [.249]
1.27 [.050]
1.02 [.040]
0.12 [.005]
13.84 [.545]
13.59 [.535]
13.84 [.545]
13.59 [.535]
3.81 [.150]
2X
17.40 [.685]
16.89 [.665]
A
1.14 [.045]
0.89 [.035]
0.36 [.014]
B A
3X
B
20.32 [.800]
20.07 [.790]
3.78 [.149]
3.53 [.139]
1
2
3
17.40 [.685]
16.89 [.665]
3.81 [.150]
0.84 [.033]
MAX.
C
NOT ES :
1. DIMENS IONING & T OLE RANCING PER AS ME Y14.5M-1994.
2. AL L DIMENS IONS ARE S HOWN IN MILLIMET ERS [INCHES ].
3. CONT ROL LING DIMENS ION: INCH.
4. CONF ORMS T O JEDE C OUT LINE T O-254AA.
PD -94298A
35CGQ045
2
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Part number
35CGQ045
V
R
Max. DC Reverse Voltage (V) (Per Leg)
V
RWM
Max. Working Peak Reverse Voltage (V) (Per Leg)
Voltage Ratings
45
Parameters
Limits Units
Conditions
I
F(AV)
Max. Average Forward Current
35
A
50% duty cycle @ T
C
= 114 C, square waveform
See Fig. 5
I
FSM
Max. Peak One Cycle Non - Repetitive
200
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
V
FM
Max. Forward Voltage Drop
0.71
V
@ 17.5A
T
J
= -55C
(Per Leg) See Fig. 1
Q
0.88
V
@ 35A
0.68
V
@ 17.5A
T
J
= 25C
0.92
V
@ 35A
0.65
V
@ 17.5A
T
J
= 125C
0.94
V
@ 35A
I
RM
Max. Reverse Leakage Current
0.1
mA
T
J
= 25C
(Per Leg) See Fig. 2
Q
7.0
mA
T
J
= 100C
V
R
= rated V
R
26
mA
T
J
= 125C
C
T
Max. Junction Capacitance (Per Leg)
1320
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
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
1.4
C/W
DC operation
See Fig. 4
to Case (Per Leg)
R
thJC
Max. Thermal Resistance, Junction
0.7
C/W
DC operation
to Case (Per Package)
wt
Weight (Typical)
9.3 g
Die Size (Typical)
170X115 mils
Thermal-Mechanical Specifications
Case Style
TO-254AA
35CGQ045
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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)
0.0
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
0
10
20
30
40
50
Reverse Voltage - VR (V)
0.0001
0.001
0.01
0.1
1
10
100
Reverse Current - I
R
( mA )
125C
75C
25C
100C
0
10
20
30
40
50
Reverse Voltage -VR (V)
100
1000
10000
Junction Capacitance - C
T
(pF)
TJ = 25C
35CGQ045
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)
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. 10/01
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)
35CGQ045
R thJC = 0.7C/W
DC
0.01
0.1
1
10
0.00001
0.0001
0.001
0.01
0.1
1
10
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)
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