20CJQ045
Vishay High Power Products
Schottky Rectifier, 2 x 1 A
FEATURES
• Small foot print, surface mountable
Base
common
4
• Low profile
• Very low forward voltage drop
• High frequency operation
• Guard ring for enhanced ruggedness and long term
reliability
Anode
3
SOT-223
Anode
1
2
Common
cathode
• Common cathode
• Designed and qualified for industrial level
DESCRIPTION
PRODUCT SUMMARY
I
F(AV)
V
R
2x1A
45 V
The 20CJQ045 surface mount Schottky rectifier series has
been designed for applications requiring very low forward
drop and very small foot prints. Typical applications are in
portables, switching power supplies, converters, automotive
system, freewheeling diodes, battery charging, and reverse
battery protection.
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
I
F(AV)
V
RRM
I
FSM
V
F
T
J
t
p
= 5 µs sine
1 Apk, T
J
= 125 °C (per leg)
CHARACTERISTICS
Rectangular waveform
VALUES
2
45
390
0.50
- 55 to 150
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
DC reverse voltage
Working peak reverse voltage
SYMBOL
V
R
V
RWM
20CJQ045
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average
forward current
See fig. 5
per leg
I
F(AV)
per device
50 % duty cycle at T
C
= 102 °C, rectangular waveform
5 µs sine or 3 µs rect. pulse
I
FSM
10 ms sine or 6 ms rect. pulse
E
AS
I
AR
T
J
= 25 °C, I
AS
= 1 A, L = 4 mH
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
Following any rated
load condition and with
rated V
RRM
applied
2
A
390
23
2
1
mJ
A
SYMBOL
TEST CONDITIONS
50 % duty cycle at T
C
= 126 °C, rectangular waveform
VALUES
1
UNITS
Maximum peak one cycle non-repetitive
surge current per leg
See fig. 7
Non-repetitive avalanche energy per leg
Repetitive avalanche current per leg
Document Number: 93272
Revision: 22-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
20CJQ045
Vishay High Power Products
Schottky Rectifier, 2 x 1 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
1A
Maximum forward voltage drop per leg
See fig. 1
V
FM (1)
2A
1A
2A
Maximum reverse leakage
current per leg
See fig. 2
Typical junction capacitance per leg
Typical series inductance per leg
Maximum voltage rate of change
Note
(1)
Pulse width < 300 µs, duty cycle < 2 %
I
RM (1)
C
T
L
S
dV/dt
T
J
= 25 °C
V
R
= Rated V
R
T
J
= 125 °C
V
R
= 5 V
DC
(test signal range 100 kHz to 1 MHz) 25 °C
Measured lead to lead 5 mm from package body
Rated V
R
10
70
6
7700
pF
nH
V/µs
TEST CONDITIONS
T
J
= 25 °C
VALUES
0.54
0.67
0.50
0.65
0.1
mA
V
UNITS
T
J
= 125 °C
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
Maximum junction and
storage temperature range
Maximum thermal resistance,
junction to ambient
Maximum thermal resistance,
junction to lead
Approximate weight
Marking device
Note
(1)
SYMBOL
T
J (1)
, T
Stg
R
thJA
DC operation
R
thJL
TEST CONDITIONS
VALUES
- 55 to 150
65
UNITS
°C
°C/W
25
0.13
0.0045
g
oz.
2CJQF
Case style SOT-223
dP
tot
1
------------ < ------------- thermal runaway condition for a diode on its own heatsink
-
-
dT
J
R
thJA
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2
For technical questions, contact: diodes-tech@vishay.com
Document Number: 93272
Revision: 22-Aug-08
20CJQ045
Schottky Rectifier, 2 x 1 A
Vishay High Power Products
100
10
R
everse Current - I
R
(mA)
10
1
T
J
= 150°C
125°C
100°C
0.1
0.01
0.001
75°C
50°C
25°C
Ins
tantaneous Forward Current - I
F
(A)
0.0001
0
5
10
15 20 25 30 35 40
45
Reverse Voltage - V
R
(V)
T = 150°C
1
J
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
100
T
J
= 125°C
T
J
= 25°C
Junction Capac itance - C
T
(pF
)
T
J
= 25°C
0.1
0
0.4
0.8
1.2
1.6
Forward Voltage Drop - V
FM
(V)
10
0
10
20
30
40
50
R
everse Voltage - V (V)
R
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage
(Per Leg)
100
T
herma l Impedanc e Z
thJC
(°C/ W)
10
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
P
DM
1
S
ingle Pulse
(T
hermal Resistance)
Notes:
t1
t2
1. Duty fac tor D = t 1/ t 2
2. Peak T = P x Z
thJC
+ T
C
J
DM
0.1
1
10
100
0.1
0.00001
0.0001
0.001
0.01
t 1 , Rectangular Pulse Duration (S
econds)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 93272
Revision: 22-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
20CJQ045
Vishay High Power Products
Schottky Rectifier, 2 x 1 A
150
Allowable Case T
emperature - (°C)
140
Average Power Los - (Watts)
s
2.5
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
130
120
110
100
90
80
70
60
0
0.5
1
1.5
2
2.5
3
Average Forward Current - I
F(AV)
(A)
see note (1)
2
DC
1.5
RMS Limit
1
S
quare wave (D = 0.50)
80% Rated V
R
applied
0.5
0
0
0.5
1
1.5
2
2.5
3
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
1000
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Non-Repetitive S
urge Current - I
FSM
(A)
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
10
100
1000
10000
S
quare Wave Pulse Duration - t p (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
L
High-speed
switch
Freewheel
diode
40HFL40S02
+ V
d
= 25 V
D.U.T.
IRFP460
R
g
= 25
Ω
Current
monitor
Fig. 8 - Unclamped Inductive Test Circuit
Note
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= 80 % rated V
R
(1)
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4
For technical questions, contact: diodes-tech@vishay.com
Document Number: 93272
Revision: 22-Aug-08
20CJQ045
Schottky Rectifier, 2 x 1 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
2
1
1
2
3
4
5
6
7
-
-
-
0
2
C
3
J
4
Q
5
045
6
-
7
Current rating (2 = 2 A)
Schottky rectifier series
Circuit configuration:
C = Common cathode
-
Package:
J = SOT-223
-
-
Schottky “Q” series
Voltage rating (045 = 45 V)
None = Standard production
PbF = Lead (Pb)-free
-
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
Packaging information
http://www.vishay.com/doc?95022
http://www.vishay.com/doc?95031
http://www.vishay.com/doc?95035
Document Number: 93272
Revision: 22-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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