SGS Thomson Microelectronics 1N5819, 1N5818, 1N5817 Datasheet
®
LOW DROP POWER SCHOTTK Y RECTIFIER
MAIN PRODUCTS CHARACTE RISTICS
1N581x
I
F(AV)
V
RRM
T
j
(max) 0.45 V
V
F
1 A
40 V
150°C
FEATURES AND BENE FITS
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSE S
EXTREMELY FAST SWITCHING
LOW FORWARD V O LTAGE DROP
DESCRIPTION
Axial Power Schottky rectifier suited for Switch
Mode Power Supplies and high frequency DC to
DC converters. Packaged in DO41 these devices
are intended for use in low voltage, high frequency
inverters, free wheeling, polarity protection and
small battery chargers.
ABSOLUTE RATINGS (limiting values)
Symbol Parameter
V
RRM
I
F(RMS)
I
F(AV)
I
FSM
T
stg
Tj
dV/dt
Repetitive peak reverse voltage
RMS forward current
Average forward current TL = 125°C
Surge non repetitive forward current tp = 10 ms
Storage temperature range
Maximum operating junction temperature *
Critical rate of rise of rev erse v oltage
δ = 0.5
Sinusoidal
DO41
Value
1N5817 1N5818 1N5819
20 30 40 V
10 A
1A
25 A
- 65 to + 150 °C
150 ° C
10000 V/µs
Unit
dPtot
* :
July 1999 - Ed: 2A
dTj
<
Rth(j−a
1
thermal runaway condition for a diode on its own heatsink
)
1/5
1N581x
THERMA L RE SISTA NC ES
Symbol Parameter Value Unit
R
R
th (j-a)
th (j-l)
Junction to ambient
Junction to lead
STATIC ELECTRICAL CHARACTE RISTICS
Symbol Parameter Tests Conditions 1N5817 1N5818 1N5819 Unit
Lead length = 10 mm 100 °C/W
Lead length = 10 mm 45 °C/W
*
I
R
V
F
Reverse leakage
current
*
Forward voltage drop Tj = 25°CI
Tj = 25°CV
Tj = 100°C
Tj = 25°CI
= V
R
= 1 A
F
= 3 A
F
RRM
Pulse test : * tp = 380 µs, δ < 2%
To evaluate the conduction losses use the following equations :
P = 0.3 x I
P = 0.3 x I
F(AV)
F(AV)
+ 0.090 I
+ 0.150 I
F2(RMS )
F2(RMS )
for 1N5817 / 1N5818
for 1N5819
111mA
10 10 10 mA
0.45 0.55 0.6 V
0.75 0.875 0.9 V
Fig. 1: Average forward power dissipation versus
average forward current (1N5817/1N5818).
PF(av)(W)
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
δ = 0.05
δ = 0.1
δ = 0.2
IF(av) (A)
2/5
δ = 0.5
=tp/T
δ
δ = 1
T
tp
Fig. 2: Average forward power dissipation versus
average forward current (1N5819).
PF(av)(W)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
δ = 0.05
δ = 0.1
δ = 0.2
IF(av) (A)
δ
δ = 0.5
=tp/T
δ = 1
T
tp
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