PD-20503D
SCHOTTKY RECTIFIER
HIGH EFFICIENCY SERIES
35CLQ045
35A, 45V
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
(Per Leg)
I
FSM
@ tp = 8.3ms half-sine
(Per Leg)
V
F
@ 20Apk, T
J
= 125°C
(Per Leg)
35CLQ045 Units
35
45
300
0.57
A
V
A
V
°C
Description / Features
The 35CLQ045 center tap Schottky rectifier has been
expressly designed to meet the rigorous requirements of
HiRel environments. It is packaged in the hermetic surface
mount SMD-1 ceramic 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 controlled
drawings to TX, TXV and S levels.
•
•
•
•
•
Hermetically Sealed
Center Tap
Low Forward Voltage Drop
High Frequency Operation
Guard Ring for Enhanced Ruggedness and Long
Term Reliability
• Surface Mount
• Lightweight
T
J
, T
stg
Operating and storage
-55 to 150
CASE STYLE
( ISOLATED BASE )
2
1
3
ANODE COMMON ANODE
CATHODE
Case Outline and Dimensions - SMD-1
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1
09/21/12
35CLQ045
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V) (Per Leg)
V
RWM
Max. Working Peak Reverse Voltage (V) (Per Leg)
35CLQ045
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)
300
A
@ t
p
= 8.3 ms half-sine
Limits
35
Units
A
Conditions
50% duty cycle @ T
C
= 80°C, rectangular waveform
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(Per Leg) See Fig. 1
Limits
0.73
0.83
0.63
0.75
0.57
0.71
Units
V
V
V
V
V
V
mA
mA
pF
nH
@ 20A
@ 35A
@ 20A
@ 35A
@ 20A
@ 35A
Conditions
T
J
= -55°C
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
Max. Junction Capacitance (Per Leg)
Typical Series Inductance (Per Leg)
0.5
20
1400
2.8
T
J
= 25°C
T
J
= 125°C
V
R
= 5V
DC
( 1MHz, 25°C )
Measured from center of cathode pad to center of
anode pad
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
Case Style
2.6
150X150
SMD-1
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
Pulse Width < 300µs, Duty Cycle < 2%
2
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35CLQ045
100
100
10
1
0.1
0.01
0.001
T
J
= 150°C
125°C
100°C
25°C
Instantaneous Forward Current - I F (A)
10
0.0001
0
10
20
30
40
50
A
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
Tj = 125°C
1
Tj = 25°C
10000
Tj = -55°C
T
J
= 25°C
1000
0.1
0.0
0.2
0.4
0.6
0.8
1.0
1.2
100
0
10
20
30
40
Forward Voltage Drop - V F (V)
A
50
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
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3
35CLQ045
10
Thermal Response ( Z thJC )
1
D = 0.50
0.20
P
DM
t
1
0.1
0.10
0.05
0.02
0.01
SINGLE PULSE
( THERMAL RESPONSE )
t
2
0.01
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
0.001
1E-005
0.0001
0.001
0.01
0.1
1
t1 , Rectangular Pulse Duration (sec)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
160
Allowable Case Temperature - (°C)
140
120
DC
R
(DC) = 0.7°C/W
thJC
100
80
60
40
20
0
0
10
20
30
40
50
60
70
80
Square Wave (D=0.50)
80% Rated VR applied
Average Forward Current - I F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature Vs.
Average Forward Current (Per Package)
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233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
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TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 09/2012
4
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