Static Shielding Bag Choices P/N: See Data Sheet According to ANSI/ESD S-20.20, when sensitivity is unknown, static shielding packaging should be used. Static shielding bags are the primary method of packaging cards and assemblies for protection against damage by static electricity. SCC 1000 Metal-In Static Shielding Bag: The most widely used bag structure for static protective packaging. Metal-in Shielding Bags are durable because the metal shield is positioned between two layers of plastic. Complies with MIL-PRF-81705D, EIA 625, EIA 541, ANSI/ESD S-20.20. SCC 1500 Metal-Out Static Shielding Bag: Used where device sensitivity to charge retention is the primary consideration. Provides low charge retention and fast discharge by placing the metal layer near the outer surface. Complies with MIL-PRF-81705D, EIA 625, EIA 541, ANSI/ESD S-20.20.