1 Scope

Summary of Topics:

This revision of ANSI/UL 746E dated September 22, 2021 includes the following changes:

– Updating Definitions of Varnish Building Blocks for Base Materials; 2.34A, 2.42A, 2.48A, 2.48B, 2.49A, 2.60A, 2.72A – 2.72D, 2.78A – 2.78C, 2.79A – 2.79F, 2.81, 2.83A and 7.1A

– Clarification of Industrial Laminate Definition; 2.53

– Editorial Updates; 2.4, 2.34, 4.5, 19.5.1.2, Table 7.2, Table 8.2, 7.13, 21.1.2, 22.1.7, 22.2.3, Table 22.1, 22.3.2, 22.3.3, 22.6.1.1, Figure 22.3, 22.6.1.5, and SA6.2

– Correction of Thermal Indices for FR-4.0 and FR-4.1 in Table 10.2