Bulletin PD-20590 rev. B 11/04
1N5818
1N5819
SCHOTTKY RECTIFIER
1.0 Amp
Major Ratings and Characteristics
Description/Features
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.
Characteristics
Values
Units
IF(AV) Rectangular
1.0
A
30/40
V
Low profile, axial leaded outline
IFSM @ tp = 5 µs sine
225
A
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
VF
@ 1 Apk, T J = 25°C
0.55
V
TJ
range
- 40 to 150
°C
waveform
VRRM
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free plating
CASE STYLE AND DIMENSIONS
Device Marking: 1N581X
Conform to JEDEC Outline DO-204AL (DO-41)
Dimensions in millimeters and inches
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1
1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
Voltage Ratings
Part number
VR
1N5818
1N5819
30
40
Max. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Absolute Maximum Ratings
Parameters
Value
Units
1.0
A
50% duty cycle @ TL =90 °C, rectangular wave form
A
5µs Sine or 3µs Rect. pulse Following any rated
load condition and with
10ms Sine or 6ms Rect. pulse rated V
RRM applied
IF(AV) Max. Average Forward Current
Conditions
* See Fig. 4
IFSM
Max. Peak One Cycle Non-Repetitive
225
Surge Current * See Fig. 6
35
Electrical Specifications
Parameters
VFM
Max. Forward Voltage Drop
* See Fig. 1
IRM
1N5818 1N5819 Units
(1)
Conditions
0.55
0.6
V
@ 1A
0.71
0.73
V
@ 2A
0.875
0.9
V
@ 3A
0.5
0.55
V
@ 1A
0.61
0.63
V
@ 2A
0.77
0.79
V
@ 3A
Max. Reverse Leakage Current
1.0
* See Fig. 2
6.0
mA
T J = 100°C
12
mA
T J = 125°C
(1)
mA
TJ = 25 °C
TJ = 125 °C
T J = 25°C
VR = rated VR
CT
Max. Junction Capacitance
60
pF
V R = 5VDC (test signal range 100 to 1Mhz) 25°C
LS
Typical Series Inductance
8.0
nH
Measured lead to lead 5mm from pack. body
10000
V/µs
dv/dt Max. Voltage Rate of Change
(Rated VR)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
Value
Units
TJ
Max. Junction Temperature Range
-40 to 150
°C
Tstg
Max. Storage Temperature Range
-40 to 150
°C
RthJL Max. Thermal Resistance Junction
to Lead
(2)
wt
Approximate Weight
Case Style
80
Conditions
°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
T J = 150˚C
10
1
125˚C
0.1
0.01
25˚C
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
0.1
0
0.2
0.4
0.6
0.8
1
1.2
Forward Voltage Drop - VFM (V)
Fig. 1 - Typ. Forward Voltage Drop Characteristics
Junction Capacitance - C T (pF)
Instantaneous Forward Current - I
F
(A)
Reverse Current - I R (mA)
10
T = 25˚C
J
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
0.8
160
140
Average Power Loss (Watts)
Allowable Lead Temperature (°C)
Bulletin PD-20590 rev. B 11/04
DC
120
100
80
Square wave (D = 0.50)
Rated Vr applied
60 see note (3)
0.6
RMS Limit
0.4
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
DC
0.2
0
40
0
0.2 0.4 0.6 0.8
1
0
1.2 1.4 1.6
0.5
1
1.5
Average Forward Current - I F(AV) (A)
Fig. 4 - Typ. Allowable Lead Temperature
Vs. Average Forward Current
Fig. 5- Forward Power Loss Characteristics
1000
Non-Repetitive Surge Current - I
(A)
FSM
Average Forward Current - I F(AV) (A)
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
100
10
10
100
1000
10000
Square Wave Pulse Duration - tp (microsec)
Fig. 6 - Typ . Non-Repetitive Surge Current
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x V FM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR
4
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1N5818, 1N5819
Bulletin PD-20590 rev. B 11/04
Ordering Information Table
Device Code
1N5819
TR
1
2
1N5818 = 1A, 30V
1
-
Part Number
2
-
TR= Tape & Reel package (5000 pcs)
-
1N5819 = 1A, 40V
= Box package (1000 pcs)
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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