LC6.5 thru LC170A, e3
1500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
SCHEMATIC APPLICATIONS
The TVS low capacitance device configuration is shown in Figure 2. As a further option for unidirectional applications, an additional low
capacitance rectifier diode may be used in parallel in the same polarity direction as the TVS as shown in Figure 3. In applications where random
high voltage transients occur, this will prevent reverse transients from damaging the internal low capacitance rectifier diode and also provide a
low voltage conducting direction. The added rectifier diode should be of similar low capacitance and also have a higher reverse voltage rating
than the TVS clamping voltage V
C
. The Microsemi recommended rectifier part number is the “LCR80” for the application in Figure 5. If using two
(2) low capacitance TVS devices in anti-parallel for bidirectional applications, this added protective feature for both directions (including the
reverse of each rectifier diode) is also provided. The unidirectional and bidirectional configurations in Figure 3 and 4 will both result in twice the
capacitance of Figure 2.
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Microsemi
.C
OM
FIGURE 2
TVS with internal Low
Capacitance Diode
FIGURE 3
Optional Unidirectional
configuration (TVS and
separate rectifier diode)
in parallel)
FIGURE 4
Optional Bidirectional
configuration (two TVS
devices in anti-parallel)
PACKAGE DIMENSIONS
LC6.5 thru LC170A
DO-13 (or DO-202AA)
Copyright
©
2008
10-29-2008 REV E
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 4
MICROSEMI [ MICROSEMI CORPORATION ]
