PD -94298A
SCHOTTKY RECTIFIER
HIGH EFFICIENCY SERIES
35CGQ045
35 Amp, 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
V
RRM
(Per Leg)
I
FSM
@ tp = 8.3ms half-sine
(Per Leg)
V
F
@ 35Apk, T
J
=125°C
(Per Leg)
35CGQ045 Units
35
45
200
A
V
A
Description/Features
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
•
•
•
•
•
0.94
V
T
J
, T
stg
Operating and storage
-55 to 150
°C
0.12 [.005]
3.78 [.149]
3.53 [.139]
13.84 [.545]
13.59 [.535]
6.60 [.260]
6.32 [.249]
1.27 [.050]
1.02 [.040]
CASE STYLE
A
17.40 [.685]
16.89 [.665]
1
2
3
20.32 [.800]
20.07 [.790]
13.84 [.545]
13.59 [.535]
B
C
17.40 [.685]
16.89 [.665]
0.84 [.033]
MAX.
3X
3.81 [.150]
2X
1.14 [.045]
0.89 [.035]
0.36 [.014]
B A
3.81 [.150]
NOTES :
1.
2.
3.
4.
DIMENS IONING & T OLE RANCING PER AS ME Y14.5M-1994.
AL L DIMENS IONS ARE S HOWN IN MILLIMETERS [INCHES ].
CONT ROL LING DIMENS ION: INCH.
CONF ORMS TO JEDE C OUTLINE T O-254AA.
1
2
3
ANODE COMMON ANODE
CATHODE
IR Case Style TO-254AA
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1
10/04/01
35CGQ045
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V) (Per Leg)
V
RWM
Max. Working Peak Reverse Voltage (V) (Per Leg)
35CGQ045
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
See Fig. 5
I
FSM
Max. Peak One Cycle Non - Repetitive
Surge Current (Per Leg)
200
A
@ t
p
= 8.3 ms half-sine
Limits
35
Units
A
Conditions
50% duty cycle @ T
C
= 114 °C, square waveform
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) See Fig. 1Q
Limits
0.71
0.88
0.68
0.92
0.65
0.94
Units
V
V
V
V
V
V
mA
mA
mA
pF
nH
@ 17.5A
@ 35A
@ 17.5A
@ 35A
@ 17.5A
@ 35A
T
J
= 25°C
T
J
= 100°C
T
J
= 125°C
Conditions
T
J
= -55°C
T
J
= 25°C
T
J
= 125°C
I
RM
Max. Reverse Leakage Current
(Per Leg) See Fig. 2Q
0.1
7.0
26
V
R
= rated V
R
C
T
L
S
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
1320
7.8
V
R
= 5V
DC
( 1MHz, 25°C )
Measured from anode lead to cathode lead
6mm ( 0.025 in.) from package
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max.Junction Temperature Range
Max. Storage Temperature Range
to Case (Per Leg)
R
thJC
Max. Thermal Resistance, Junction
to Case (Per Package)
wt
Weight (Typical)
Die Size (Typical)
Case Style
Q
Pulse Width < 300µs, Duty Cycle < 2%
9.3
170X115
g
mils
0.7
°C/W
DC operation
Limits Units
-55 to 150
-55 to 150
1.4
°C
°C
°C/W
DC operation
Conditions
R
thJC
Max. Thermal Resistance, Junction
See Fig. 4
TO-254AA
2
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35CGQ045
100
10
125°C
100°C
Reverse Current - I R ( mA )
1
75°C
0.1
0.01
25°C
100
0.001
0.0001
0
10
20
30
40
50
Reverse Voltage - V R (V)
Instantaneous Forward Current - I F (A)
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
10
10000
Tj = 125°C
Tj = 25°C
Junction Capacitance - CT (pF)
T J = 25°C
1000
Tj = -55°C
1
0.0
0.2
0.4
0.6
0.8
1.0
Forward Voltage Drop - V F (V)
100
0
10
20
30
40
50
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Reverse Voltage -VR (V)
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage (Per Leg)
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3
35CGQ045
10
Thermal Response (Z
thJC
)
1
D = 0.50
0.20
0.10
0.1
0.05
0.02
0.01
SINGLE PULSE
(THERMAL RESPONSE)
0.0001
0.001
0.01
0.01
0.00001
Notes:
1. Duty factor D = t
1
/ t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.1
1
10
P
DM
t
1
t
2
t
1
, Rectangular Pulse Duration (sec)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
180
Allowable Case Temprature - (°C)
160
140
120
35CGQ045
R thJC = 0.7°C/W
DC
100
80
60
40
20
0
0
10
20
30
40
50
60
Average Forward Current - I F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature Vs.
Average Forward Current
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
4
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