Conformity Magazine- May 2008 - (Page 16) Following is a list of the current ESD Association standards documents: ANSI/ESD S1.1-2006, Wrist Straps This document establishes test methods for evaluating the electrical and mechanical characteristics of wrist straps. It includes improved test methods and performance limits for evaluation, acceptance, and functional testing of wrist straps. ANSI/ESD STM2.1-1997, Garments This standard test method provides test methods for measuring the electrical resistance of garments used to control electrostatic discharge. It covers procedures for measuring sleeve-to-sleeve and point-to-point resistance. ANSI/ESD STM3.1-2006, Ionization Test methods and procedures for evaluating and selecting air ionization equipment and systems are covered in this standard test method. This document establishes measurement techniques to determine ion balance and charge neutralization time for ionizers. ANSI/ESD SP3.3-2006, Periodic Verification of Air Ionizers This standard practice provides test methods and procedures for periodic verification of the performance of air ionization equipment and systems (ionizers). ANSI/ESD S4.1-2006, Worksurfaces—Resistance Measurements This standard establishes test methods for measuring the electrical resistance of worksurface materials used at workstations for protection of ESD susceptible items. It includes methods for evaluating and selecting materials. ANSI/ESD STM4.2-2006, ESD Protective Worksurfaces—Charge Dissipation Characteristics This standard test method provides a test method to measure the electrostatic charge dissipation characteristics of worksurfaces used for ESD control. ANSI/ESD STM5.1-2007, Human Body Model (HBM)—Component Level This standard test method updates and revises an existing standard. It establishes a procedure for testing, evaluating and classifying the ESD sensitivity of components to the defined Human Body Model (HBM). ANSI/ESD SP5.1.1-2006, Human Body Model (HBM) and Machine Model (MM) Alternative Test Method: Supply Pin Ganging— Component Level This standard practice (SP) establishes an alternative test method (Supply Pin Ganging) to perform Human Body Model (HBM) or Machine Model (MM) component level ESD tests when the component or device pin count exceeds the ESD Simulator tester channels. This alternative test method is limited to components with greater than 512 pins or balls. If an ESD simulator above 512 pins is not available, then this SP can be used as a guide to ESD stress components with greater than 512 pins or balls using a lower pin count ESD simulator. For those components (e.g., ball grid array) that interconnect different power leads through common, lowresistance power and ground planes in the package, the number of power and ground leads can be reduced by ganging or grouping supply pins together on a custom test fixture board. ANSI/ESD SP5.1.2-2006, Human Body Model (HBM) and Machine Model (MM) Alternative Test Method: Split Signal Pin—Component Level This standard practice (SP) document establishes an alternative test method (Split Signal Pin) to perform Human Body Model (HBM) or Machine Model (MM) component level ESD tests when the component or device pin count exceeds the ESD simulator tester channels. This alternative test method is limited to components with greater than 512 pins or balls. If an ESD simulator above 512 pins is not available, then this SP can be used as a guide to ESD stress components with greater than 512 pins or balls using a lower pin count ESD simulator. For high pin count components (e.g., ball grid array) with a large number of signal pins, the total number of pins can be reduced by splitting the signal pins into two or more equal sets or subgroups. ANSI/ESD STM5.2-1999, Machine Model (MM)—Component Level This standard test method establishes a test procedure for evaluating the ESD sensitivity of components to a defined machine model. It also provides a system of classifying the sensitivity of these components. ANSI/ESD STM5.3.1-1999, Charged Device Model (CDM)— Component Level This standard test method establishes the procedures for testing, evaluating and classifying the ESD sensitivity components to a defined charged device model. ANSI/ESD SP5.3.2-2004, Sensitivity Testing Socketed Device (SDM)—Component Level This standard practice provides a test method for generating a Socketed Device Model (SDM) test on a component integrated circuit (IC) device. ANSI/ESD SP5.4-2004, Transient Latch-up Testing—Component Level—Supply Transient Stimulation This standard practice was developed to instruct the reader on the methods and materials needed to perform transient latch-up testing. ANSI/ESD SP5.5.1-2004, Transmission Line Pulse (TLP)— Component Level This standard practice defines a method for pulse testing to evaluate the voltage current response of the component under test. ANSI/ESD S6.1-2005, Grounding This standard specifies the parameters, materials, equipment and test procedures necessary to choose, establish, vary and maintain an electrostatic discharge control grounding system for use within an ESD protected area for protection of ESD susceptible items and specifies the criteria for establishing ESD bonding. ANSI/ESD S7.1-2005, Resistive Characterization of Materials—Floor Materials Measurement of the electrical resistance of various floor materials such as floor coverings, mats, and floor finishes is covered in this document. Table 2: ESD Association Standards Documents 1 Conformity mAy 2008
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