MSMCGLCE6.5A – MXLSMCGLCE170Ae3, MSMCJLCE6.5A – MXLSMCJLCE170Ae3

Application Schematics

 Data Sheet

© 2013-2026 Microchip Technology Inc. and its subsidiaries

DS00005170C - 9

5.

Application Schematics

The TVS low capacitance device configuration is shown in Figure 5-1. 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 5-2. 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 VC. The Microchip recommended rectifier part number for the application in

Figure 5-2 is the “SMBJLCR80” or “SMBGLCR80” depending on the terminal configuration desired. 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 inherently

provided in Figure 5-3. The unidirectional and bidirectional configurations in Figure 5-2 and Figure

5-3 will both result in twice the capacitance of Figure 5-1.

Figure 5-1. TVS With Internal Low Capacitance Rectifier

Diode

Figure 5-2. Optional Unidirectional Configuration (TVS

and Separate Rectifier Diode in Parallel)

Figure 5-3. Optional Bidirectional Configuration (Two TVS Devices in Anti-Parallel)