IRF 20CLQ045

PD -20352F
20CLQ045
SCHOTTKY RECTIFIER
HIGH EFFICIENCY SERIES
20A, 45V
Major Ratings and Characteristics
Characteristics
Description/Features
20CLQ045 Units
IF(AV) Rectangular
waveform
VRRM (Per Leg)
20
A
45
V
IFSM @ tp = 8.3ms half-sine
(Per Leg)
250
A
VF @ 10Apk, TJ =125°C
(Per Leg)
0.48
V
TJ, Tstg Operating and storage -55 to 150
°C
The 20CLQ045 center tap Schottky rectifier has been
expressly designed to meet the rigorous requirements of
hi-rel 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
CASE STYLE
(ISOLATED BASE)
2
1
3
ANODE COMMON ANODE
CATHODE
Case Outline and Dimensions SMD-1
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12/03/03
20CLQ045
Voltage Ratings
Part number
VR
20CLQ045
Max. DC Reverse Voltage (V) (Per Leg)
45
VRWM Max. Working Peak Reverse Voltage (V) (Per Leg)
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current
Limits
Units
20
A
50% duty cycle @ TC = 100°C, rectangular waveform
Conditions
250
A
@ tp = 8.3 ms half-sine
See Fig. 5
I FSM
Max. Peak One Cycle Non - Repetitive
Surge Current (Per Leg)
Electrical Specifications
Parameters
Limits
Units
Max. Forward Voltage Drop
0.57
V
@ 10A
(Per Leg) See Fig. 1Q
0.69
V
@ 20A
0.48
V
@ 10A
0.61
V
@ 20A
Max. Reverse Leakage Current
0.5
mA
TJ = 25°C
(Per Leg) See Fig. 2 Q
15
mA
TJ = 125°C
CT
Max. Junction Capacitance (Per Leg)
900
pF
LS
Typical Series Inductance (Per Leg)
5.9
nH
V FM
I RM
Conditions
TJ = 25°C
TJ =1 25°C
VR = rated VR
VR = 5VDC ( 1MHz, 25°C )
Measured from center of cathode pad to center of
anode pad
Thermal-Mechanical Specifications
Parameters
Limits Units
Conditions
TJ
Max.Junction Temperature Range
-55 to 150
Tstg
Max. Storage Temperature Range
-55 to 150
°C
1.67
°C/W
DC operation
0.83
°C/W
DC operation
RthJC Max. Thermal Resistance, Junction
°C
See Fig. 4
to Case (Per Leg)
RthJC Max. Thermal Resistance, Junction
to Case (Per Package)
wt
Weight (Typical)
Die Size
Case Style
2.6
g
125X125
mils
SMD-1
Q Pulse Width < 300µs, Duty Cycle < 2%
2
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20CLQ045
100
TJ = 175°C
10
150°C
125°C
1
75°C
0.1
50°C
0.01
25°C
0.001
A
0.0001
0
5
10
15
20
25
30
35
40
45
Fig. 2 - Typical Values of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
Fig. 3 - Typical Junction Capacitance Vs.
Reverse Voltage (Per Leg)
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20CLQ045
Thermal Response (Z thJC )
10
1
D = 0.50
0.20
0.10
0.1
0.02
0.01
0.01
0.00001
P DM
0.05
t1
SINGLE PULSE
(THERMAL RESPONSE)
t2
Notes:
1. Duty factor D = t 1 / t 2
2. Peak TJ = P DM x Z thJC + TC
0.0001
0.001
0.01
0.1
1
10
t1 , Rectangular Pulse Duration (sec)
Fig. 4 - Max. Thermal Impedance ZthJC Characteristics (Per Leg)
20CLQ045
R thJC (DC) = 0.83°C/W
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
IR LEOMINSTER : 205 Crawford St., Leominster, Massachusetts 01453, USA Tel: (978) 534-5776
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.
Data and specifications subject to change without notice. 12/03
4
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