Aluminum EMI / RF Shield
A shield made from aluminum (AL) or an aluminum-based alloy coated with a solderable plating such as nickel or tin provides thermal improvement over existing shielding materials. The shield for circuitry on a circuit board comprising an aluminum material plated with a solderable material, the shield providing electromagnetic interference and radio frequency interference shielding and heat transfer when positioned over a circuit.
1 . A two piece shield attached to a circuit board for providing electromagnetic interference and radio frequency interference shielding and heat transfer when positioned over a circuit, comprising:
a fence made of a first material, the fence attachable to a circuit board; and
a lid attached to the fence, the lid made of a second material.
2 . The two piece shield of claim 1 , wherein the first material is nickel silver.
3 . The two piece shield of claim 1 , wherein the second material is aluminum.
4 . The two piece shield of claim 3 , wherein the second material is plated with nickel.
5 . The two piece shield of claim 3 , wherein the second material is plated with copper.
6 . The two piece shield of claim 3 , wherein the second material is plated with tin.
7 . The two piece shield of claim 1 , wherein the lid is snapped on to the fence.
8 . The two piece shield of claim 1 , wherein the shield comprises a top wall and one or more side walls.
9 . The two piece shield of claim 6 , further comprising heat dissipating fins attached to the top wall of the shield.
10 . The two piece shield of claim 1 , wherein the shield is peelable.
11 . The two piece shield of claim 1 , wherein the shield is non-peelable.
12 . A circuit shield assembly comprising:
a circuit board including circuitry thereon;
a two piece shield including a fence and a lid, the fence and lid containing aluminum plated with a solderable material, the fence attached to the circuit board enclosing at least a portion of the circuitry, the two piece shield transferring heat generated by the circuitry.
13 . The two piece shield of claim 12 , wherein the aluminum comprises an aluminum based alloy.
14 . The two piece shield of claim 12 , wherein the solderable material comprises at least one of nickel, copper, and tin.
15 . The two piece shield of claim 14 , wherein the shield further comprises heat dissipating fins attached to the top wall.
16 . The two piece shield of claim 12 , wherein the shield is peelable.
17 . The two piece shield of claim 12 , wherein the shield is non-peelable.