SCHOTTKY RECTIFIER
80 Amp, 45V
80SCLQ045
Major Ratings and Characteristics
Description/Features
10/06/00
CASE STYLE
IR Case Style SMD-1
www.irf.com
1
Characteristics
80SCLQ045 Units
I
F(AV)
80
A
V
RRM
(Per Leg)
45
V
I
FSM
@ tp = 8.3ms half-sine
(Per Leg)
250
A
V
F
@ 40Apk, T
J
=125C
0.62
V
(Per Leg)
T
J
, T
stg
Operating and storage
-55 to 150
C
ANODE COMMON ANODE
CATHODE
2
1
3
HIGH EFFICIENCY SERIES
The 80SCLQ045 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 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
Surface Mount
Lightweight
PD -93972
80SCLQ045
2
www.irf.com
Part number
80SCLQ045
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
80
A
50% duty cycle @ T
C
= 84C, square waveform
See Fig. 5
I
FSM
Max. Peak One Cycle Non - Repetitive
250
A
@ t
p
= 8.3 ms half-sine
Surge Current (Per Leg)
Absolute Maximum Ratings
Parameters
Limits
Units
Conditions
V
FM
Max. Forward Voltage Drop
0.62
V
@ 30A
(Per Leg) See Fig. 1
0.67
V
@ 40A
T
J
= -55C
0.70
V
@ 45A
0.85
V
@ 80A
0.57
V
@ 30A
0.63
V
@ 40A
T
J
= 25C
0.66
V
@ 45A
0.88
V
@ 80A
Electrical Specifications
0.87
V
@ 80A
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)
2.6 g
Die Size (Typical)
150X180 mils
Thermal-Mechanical Specifications
Case Style
SMD-1
L
S
Typical Series Inductance (Per Leg)
5.9
nH
Measured from center of cathode pad to center of
anode pad
C
T
Max. Junction Capacitance (Per Leg)
2000
pF
V
R
= 5V
DC
( 1MHz, 25C )
I
RM
Max. Reverse Leakage Current
0.6
mA
T
J
= 25C
(Per Leg) See Fig. 2
80
mA
T
J
= 100C
V
R
= rated V
R
195
mA
T
J
= 125C
0.62
V
@ 40A T
J
= 125C
0.53
V
@ 30A
0.64
V
@ 45A
80SCLQ045
www.irf.com
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)
0.01
0.1
1
10
100
1000
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
80SCLQ045
4
www.irf.com
Fig. 5 - Max. Allowable Case Temperature Vs.
Average Forward Current (Per Leg)
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
IR EUROPEAN REGIONAL CENTRE: 439/445 Godstone Rd, Whyteleafe, Surrey CR3 OBL, UK Tel: ++ 44 (0)20 8645 8000
IR CANADA: 15 Lincoln Court, Brampton, Ontario L6T3Z2, Tel: (905) 453 2200
IR GERMANY: Saalburgstrasse 157, 61350 Bad Homburg Tel: ++ 49 (0) 6172 96590
IR ITALY: Via Liguria 49, 10071 Borgaro, Torino Tel: ++ 39 011 451 0111
IR JAPAN: K&H Bldg., 2F, 30-4 Nishi-Ikebukuro 3-Chome, Toshima-Ku, Tokyo 171 Tel: 81 (0)3 3983 0086
IR SOUTHEAST ASIA: 1 Kim Seng Promenade, Great World City West Tower, 13-11, Singapore 237994 Tel: ++ 65 (0)838 4630
IR TAIWAN:16 Fl. Suite D. 207, Sec. 2, Tun Haw South Road, Taipei, 10673 Tel: 886-(0)2 2377 9936
Data and specifications subject to change without notice. 10/00
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
0
20
40
60
80
100
120
Average Forward Current - IF(AV) (A)
0
20
40
60
80
100
120
140
160
180
Allowable Case Temprature - (C)
80SCLQ045
R thJC = 1.25C/W
DC
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)
PDF 
ZIP