Electrostatic Dissipative (ESd) Plastic

An electrostatic dissipative (ESd) plastic has a combination of static dissipation, high strength, and high heat resistance. Semitron ESd 520HR has a surface resistivity of 10¹⁰-10¹² ohms/square, a tensile modulus of 800,000, and a heat deflection temperature (at 264 psi) of 520°F. The ESd material, which is available in stock shapes for machining, is suited for making static-dissipative nests, sockets, and contactors for testing semiconductor equipment, and other device handling components. ESd 520HR also has a low coefficient of thermal expansion, high compressive strength, good wear resistance, and can be machined to very tight tolerances, all of which are important benefits for nests and sockets used in testing semiconductor devices.

Other materials for the semiconductor industry available from the company are: Semitron ESd 225 (surface resistivity of 10¹⁰ omega/sq and a heat deflection temperature of 225°F), Semitron ESd 410C (surface resistivity of 10⁴-10⁶ omega/sq and a heat deflection temperature of 420°F), and Semitron ESd 500HR (surface resistivity of 10¹⁰-10¹² omega/sq and a heat deflection temperature of 500°F).

DSM Engineering Plastic Products, Inc., Polymer Corp., 2120 Fairmont Ave., P.O. Box 14235, Reading. PA 19612-4235. Contact: Kress Schwartz, 610-320-6639; Fax: 610-320-6868.