Bulletin PD-20590 rev. B 11/04
1N5818
1N5819
SCHOTTKY RECTIFIER
1.0 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular
waveform
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 1 Apk, T
J
= 25°C
range
Description/Features
Units
A
V
A
V
°C
The 1N5818/ 1N5819 axial leaded Schottky rectifier has been
optimized for very low forward voltage drop, with moderate
leakage. Typical applications are in switching power supplies,
converters, free-wheeling diodes, and reverse battery
protection.
Low profile, axial leaded outline
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free plating
Values
1.0
30/40
225
0.55
- 40 to 150
CASE STYLE AND DIMENSIONS
Device Marking: 1N581X
Conform to JEDEC Outline DO-204AL (DO-41)
Dimensions in millimeters and inches
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1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
Voltage Ratings
Part number
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
1N5818
30
1N5819
40
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward Current
* See Fig. 4
I
FSM
Max. Peak One Cycle Non-Repetitive
Surge Current * See Fig. 6
225
35
A
Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM
applied
5µs Sine or 3µs Rect. pulse
Value
1.0
Units
A
Conditions
50% duty cycle @ T
L
=90 °C, rectangular wave form
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
* See Fig. 1
(1)
1N5818 1N5819
Units
0.55
0.71
0.875
0.5
0.61
0.77
0.6
0.73
0.9
0.55
0.63
0.79
1.0
6.0
12
V
V
V
V
V
V
mA
mA
mA
pF
nH
V/µs
Conditions
@ 1A
@ 2A
@ 3A
@ 1A
@ 2A
@ 3A
T
J
= 25°C
T
J
= 100°C
T
J
= 125°C
V
R
= 5V
DC
(test signal range 100 to 1Mhz) 25°C
Measured lead to lead 5mm from pack. body
V
R
= rated V
R
T
J
= 125 °C
T
J
= 25 °C
I
RM
Max. Reverse Leakage Current
* See Fig. 2
(1)
C
T
L
S
Max. Junction Capacitance
Typical Series Inductance
60
8.0
10000
dv/dt Max. Voltage Rate of Change
(Rated V
R
)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Value
-40 to 150
-40 to 150
80
Units
°C
°C
Conditions
R
thJL
Max. Thermal Resistance Junction
to Lead
(2)
wt
Approximate Weight
Case Style
°C/W DC operation (* See Fig. 4)
0.33(0.012) g (oz.)
DO-204AL(DO-41)
(2) Mounted 1 inch square PCB, thermal probe connected to lead 2mm from package
2
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1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
100
Reverse Current - I
R
(mA)
10
10
1
T J = 150˚C
125˚C
0.1
0.01
25˚C
Instantaneous Forward Current - I
F
(A)
0.001
0.0001
0
10
20
30
40
Reverse Voltage - V
R
(V)
1
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
100
Tj = 150˚C
Tj = 125˚C
Tj = 25˚C
Junction Capacitance - C
T
(pF)
T = 25˚C
J
0.1
0
0.2
0.4
0.6
0.8
1
1.2
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Typ. Forward Voltage Drop Characteristics
10
0
10
20
30
40
50
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
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1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
Allowable Lead Temperature (°C)
160
140
120
100
80
Square wave (D = 0.50)
Rated Vr applied
0.8
Average Power Loss (Watts)
DC
0.6
RMS Limit
0.4
0.2
60
see note (3)
40
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6
Average Forward Current - I
F(AV)
(A)
Fig. 4 - Typ. Allowable Lead Temperature
Vs. Average Forward Current
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
DC
0
0
0.5
1
1.5
Average Forward Current - I
F(AV)
(A)
Fig. 5- Forward Power Loss Characteristics
Non-Repetitive Surge Current - I
(A)
FSM
1000
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
100
10
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 6 - Typ . Non-Repetitive Surge Current
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
4
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1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
Ordering Information Table
Device Code
1N5819
1
TR
2
1N5818 = 1A, 30V
1
2
-
-
Part Number
TR= Tape & Reel package (5000 pcs)
-
= Box package (1000 pcs)
1N5819 = 1A, 40V
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level and Lead-Free.
Qualification Standards can be found on IR's Web site.
IR WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 11/04
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