1N5817, 1N5818, 1N5819
NOTE 6. — HIGH FREQUENCY OPERATION
Since current flow in a Schottky rectifier is the result of
majority carrier conduction, it is not subject to junction
diode forward and reverse recovery transients due to
minority carrier injection and stored charge. Satisfactory
circuit analysis work may be performed by using a model
consisting of an ideal diode in parallel with a variable
capacitance. (See Figure 10.)
Rectification efficiency measurements show that
operation will be satisfactory up to several megahertz. For
example, relative waveform rectification efficiency is
approximately 70 percent at 2.0 MHz, e.g., the ratio of dc
power to RMS power in the load is 0.28 at this frequency,
whereas perfect rectification would yield 0.406 for sine
wave inputs. However, in contrast to ordinary junction
diodes, the loss in waveform efficiency is not indicative of
power loss: it is simply a result of reverse current flow
through the diode capacitance, which lowers the dc output
voltage.
200
C, CAPACITANCE (pF)
100
70
50
30
20
T
J
= 25°C
f = 1.0 MHz
1N5817
1N5818
1N5819
10
0.4 0.6 0.8 1.0
2.0
4.0 6.0 8.0 10
V
R
, REVERSE VOLTAGE (VOLTS)
20
40
Figure 10. Typical Capacitance
ORDERING INFORMATION
Device
1N5817
1N5817G
1N5817RL
1N5817RLG
1N5818
1N5818G
1N5818RL
1N5818RLG
1N5819
1N5819G
1N5819RL
1N5819RLG
Package
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Axial Lead*
Shipping
†
1000 Units / Bag
1000 Units / Bag
5000 / Tape & Reel
5000 / Tape & Reel
1000 Units / Bag
1000 Units / Bag
5000 / Tape & Reel
5000 / Tape & Reel
1000 Units / Bag
1000 Units / Bag
5000 / Tape & Reel
5000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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