Reverse Voltage 20 to 40V
Forward Current 1.0A
Maximum Ratings and Thermal Characteristics
(T
A
= 25C unless otherwise noted)
Parameter
Symbol
1N5817
1N5818
1N5819
Unit
* Maximum repetitive peak reverse voltage
V
RRM
20
30
40
V
Maximum RMS voltage
V
RMS
14
21
28
V
* Maximum DC blocking voltage
V
DC
20
30
40
V
* Maximum non-repetitive peak reverse voltage
V
RSM
24
36
48
V
* Maximum average forward rectified current
0.375" (9.5mm) lead length at T
L
=90C
I
F(AV)
1.0
A
* Peak forward surge current, 8.3ms single
half sine-wave superimposed on rated load
I
FSM
25
A
(JEDEC Method) at T
L
=70C
Typical thermal resistance junction-to-ambient (glass)
R
JA
130
(Note 2)
junction-to-ambient (plastic)
R
JA
50
C/W
junction-to-lead (plastic)
R
JL
15
*Storage temperature range
T
J,
T
STG
65 to +125
C
Electrical Characteristics
(T
A
= 25C unless otherwise noted)
Parameter
Symbol
1N5817
1N5818
1N5819
Unit
* Maximum instantaneous forward voltage at 1.0
(Note 1)
V
F
0.450
0.550
0.600
V
* Maximum instantaneous forward voltage at 3.1
(Note 1)
V
F
0.750
0.875
0.900
V
* Maximum average reverse current
T
A
= 25C
I
R
1.0
mA
at rated DC blocking voltage
(Note 1)
T
A
= 100C
10
Typical junction capacitance at 4.0V, 1.0MHz
C
J
110
pF
*
JEDEC registered values
Notes: (1) Pulse test: 300
s pulse width, 1% duty cycle
(2) Thermal resistance from junction to lead vertical P.C.B. mounted, 0.375" (9.5mm) lead length with 1.5 x 1.5" (38 x 38mm) copper pads
Features
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
Low power loss, high efficiency
For use in low voltage high frequency inverters, free
wheeling, and polarity protection applications
Guardring for overvoltage protection
Mechanical Data
Case: JEDEC DO-204 AL molded plastic body, glass
body or glass MELF body
Terminals: Plated leads, solderable per
MIL-STD-750, Method 2026
High temperature soldering guaranteed: 250C/10
seconds at terminals for MELF and 0.375" (9.5mm) lead
length, 5lbs (2.3kg) tension for axials
Polarity: Color band denotes cathode end
(band is green on MELF)
Weight: plastic body DO-41: 0.34g
glass body DO-41: 0.35g
glass MELF: 0.25g
0.107 (2.7)
0.080 (2.0)
0.034 (0.86)
0.028 (0.71)
DIA.
1.0 (25.4)
MIN.
1.0 (25.4)
MIN.
0.205 (5.2)
0.160 (4.1)
DIA.
DO-204AL (DO-41)
Use "G" suffix
if glass body DO-41
0.022 (0.55)
0.205 (5.2)
0.189 (4.8)
0.102 (
2
.6)
0.094 (
2
.4)
Cathode Mark
Use "M" Suffix if body is MELF
Dimensions in inches and (millimeters)
*
2.6 mm max. for glass DO-41
**
4.1 mm max. for glass DO-41
Glass MELF
*
* *
1N5817 thru 1N5819
Vishay Semiconductors
formerly General Semiconductor
Schottky Barrier Rectifiers
Document Number 88525
www.vishay.com
25-Jun-02
1
Instantaneous F
orw
ard Current (A)
50
10
Instantaneous Re
v
erse Current (mA)
1.0
0.1
0.01
Fig. 1 - Forward Current Derating Curve
0
0.25
0.5
0.75
0
40
60
20
80
100
120
140
1.0
A
v
er
age F
orw
ard Current (A)
P
eak F
orw
ard Surge Current (A)
Number of Cycles at 60 H
Z
Fig. 2 - Maximum Non-Repetitive Peak
Forward Surge Current
Case Temperature (
C)
Fig. 3 - Typical Instantaneous
Forward Characteristics
1.0
10
100
0.01
0.001
0.1
T
J
= 125
C
Resistive or
Inductive Load
0.375" (9.5mm)
Lead Length
T
r
ansient
Ther
mal Impedance (
C/W)
0.01
1
10
100
10
100
0.1
0.1
1
t -- Pulse Duration (sec.)
T
J
= 125
C
Fig. 5 - Typical Junction Capacitance
J
unction Capacitance (pF)
1
10
100
100
400
10
0.1
Reverse Voltage (V)
T
J
= 25
C
f = 1.0 MH
Z
V
sig
= 50mVp-p
Instantaneous Forward Voltage (V)
0
0.4
0.2
1.2
0.8
0.6
1.4
1.6
1.0
Pulse Width = 300
s
1% Duty Cycle
0
20
100
40
60
80
Fig. 6 - Typical Transient
Thermal Impedance
Percent of Rated Peak Reverse Voltage (%)
T
J
= 25
C
T
J
= 75
C
T
J
= 25
C
Fig. 4 - Typical Reverse Characteristics
1
10
100
0
5
10
15
20
25
30
Ratings and
Characteristic Curves
(T
A
= 25C unless otherwise noted)
1N5817 thru 1N5819
Vishay Semiconductors
formerly General Semiconductor
www.vishay.com
Document Number 88525
2
25-Jun-02
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