Electrostatic Discharge (ESD) Module Practice Test

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• A ______ breakdown occurs when the threshold or maximum electric field strength of the dielectric medium is reached and bonded electrons within the medium break free and flow with the dielectric.
• What is the role of ionizers in ESD control?
• The positively charged part of an atom is a/an ______, and the negatively charged part is a/an ________.
• What does a wrist strap provide and what is its typical resistance limit?
• Which breakdown results in a high leakage path around the junction due to narrowing of the surface space-charge layer?
• Roll shirt sleeves above the _____ prior to and during repair, handling, or inspection of ESDS items.
• Which description corresponds to the old version of the ESD symbol?
• In an ESD Control Survey, what is the first step?
• During the handoff, what should the receiving area do to protect ESDS items?
• Which component is required for use with the variable voltage probes for megohmmeter?
• Which of the following is NOT a principal component of the static control work station?
• What is the periodic testing interval for stored soldering guns or irons?
• How does a dry environment affect ESD risk?
• What is the purpose of ESD awareness training for field service technicians?
• Which term describes an enclosure that shields from external static fields?
• How should ESDS devices be handled and stored to minimize ESD risk?
• What is required at the test bench when ESDS items under test are distant from the test console?
• Damaging static discharges could affect the _______, durability, and reliability of electronic communications equipment.
• ________ causes most of the damage in film type resistor packages.
• An ESDS component has a protective marking. What information does this marking convey?
• Describe ESD Symbols: Which statement correctly describes the protective symbol?
• Which ESD failure type is described as partial failure or breakdown of an ESDS item that is not crucial at the moment to operation and may take years to manifest?
• Why should you avoid touching connector pins on ESDS devices?
• What is the function of ESD-safe packaging in transit and storage?
• A properly ________ ESD work station is important because it prevents failure, injury, and damage of sensitive electronic items.
• What is a common layout feature of an EPA to control charge buildup during assembly?
• Which breakdown is also known as avalanche degradation and involves minimal heat diffusion from dissipation areas?
• Which is a core requirement of an ESD Protected Area (EPA)?
• Which type of clothing is not a static generating source?
• ESD damage may be caused by direct contact or by a charged item's ______ field.
• Which action is taken to prevent future ESD-related issues after an event?
• How can you verify that an EPA's grounding network is functioning properly?
• The ________ is required for ensuring ground conductors are effective for static drainage.
• ESD marking procedures shall be utilized on all ESDS items, ______, ESD packaging materials, and on ESDS item storage cabinets and bins.
• What is a typical indication that a wrist strap tester is showing proper grounding?
• Measures taken by all personnel who handle ESDS items will not help prevent damage of electronic parts, assemblies, and equipment. [True/False]
• What strategies reduce ESD risk when handling connectors and cables?
• What is perhaps the single most important item for effective static control and prevention for handling ESD items?
• Describe the difference between shielding bags and anti-static bags used in ESDS packaging.
• How should wrist straps be tested and how often?
• What does CPGS stand for?
• What is the purpose of ESD audits and how are they typically conducted?
• Which statement about the ESD Control area survey document is correct?
• Which product detects and measures the presence of static charge emanating from a charge-generating source?
• What constitutes a proper field return path to ground for a device?
• A _______________ and non-charge generating materials shall be used as packaging materials.
• An ESDS item remains ESDS until either a complete electrostatic shield exists around it or it can be shown by testing that it is protected from static voltages above how many volts?
• What is the Charged-Board Model (CBM) and when is it considered relevant?
• After being added to computer boards, components remain susceptible to damage from which two electrical phenomena?
• Which pairing correctly matches a device type with its commonly associated ESD failure mode?
• Where should the ESD Control area survey be stored to be readily accessible?
• In which environment is static electricity most common?
• Explain the ESD Types of Material.
• What type of clothing is NOT a static generating source?
• Personnel removing conductive end-caps without ESD protective equipment must maintain contact with the ______.
• The primary purpose of a Common Point Ground System (CPGS) is providing a single source for charge ___________.
• What is the recommended sequence for donning PPE in an EPA?
• Electrical charge (static electricity) is the quantity of electricity, negative or positive, held by an object at rest and construed as an excess or deficiency of _________.
• What is the purpose of a balance check on an ionizer?
• What are the three pillars of an effective ESD control program?
• ESD sensitive devices are defined as devices with failure thresholds between 0 and ______ volts.
• Which attention or caution statement should be placed adjacent to the universal susceptibility symbol on equipment containing ESDS parts and/or assemblies?
• Increasing the level of which environmental factor will help alleviate but not eliminate existing ESD problems?
• The ground connection of ESD control work stations shall be of sufficient __________ strength to minimize the possibility of inadvertent ground disconnections.
• What is the purpose of a wrist strap tester?
• What term is defined as 'a stored electrical charge at rest'?
• After being added to computer boards, components are still susceptible to which two types of damage?
• What are the key characteristics of the Human Body Model (HBM) used in ESD testing?
• Briefly describe the Machine Model (MM) and how it differs from the HBM.
• When verifying that the device still operates correctly after an ESD event, which step is performed?
• What would be checked FIRST to determine if an item is ESDS and it is not clearly marked?
• The discharge of voltage potential is considered detrimental to electronic devices.
• Which of the following describes a device that provides a pass or fail indicator for electrical continuity and resistance of a wrist strap?
• A common point ground system (CPGS) provides a single source of charge _________.
• Measures taken by all personnel who handle ESD sensitive items will help prevent ______ to/of electronic parts, assemblies, and equipment.
• The first action in an ESD Control Survey is to:
• It is good practice to use banana clips in the AC outlet third wire to ground ESD control work stations.
• Is contact required between two objects for discharge of static electricity to occur?
• Place ESD labels on the outermost bag on _ side(s) when ESDS items are packaged.
• Which statement correctly describes direct and indirect electrostatic discharges, and which is typically more damaging?
• If Object B is positively charged, determine the charge of Objects A and C using the principles of charged object interaction.
• How many ESD warning labels are placed on outermost container of packaging containing ESDS items?
• What risk is associated with maintaining very low humidity in an ESD environment?
• Items meeting predefined construction methods for ESDS are designated in the SENSITIVE category because they can fail with ESD levels from what range?
• Which material type is designed to prevent static buildup in ESDS handling environments?
• When working at an ESD control workstation, roll sleeves at a minimum to above the _____ prior to and during repair, handling, or inspection of items.
• Which term describes the document that should be maintained in ESD work areas?
• The work area must have a(n) ______ to allow handling ESDS items outside of protective packaging without a wrist strap.
• A/An ___ is another term used to describe an atom that has an excess or deficiency of electrons.
• What is the typical content of an ESD audit report?
• What does ESDS stand for?
• ESD must be applied to prevent equipment damage during installation, ______, and repair.
• Transport and storage ESDS items should be kept in static shielding and __________.
• If Object B is negatively charged, which statement describes the charges of Object A and B?
• Which type of failure is described as not easily detected and may cause erratic operation?
• To identify ESDS item when not clearly marked which standard?
• Which item is explicitly noted as not requiring ESD marking?
• What labeling practice should accompany the transfer of ESDS devices between areas?
• The ______ failure of an ESD sensitive item is not crucial at that moment to the operation of the device.
• Which type of failure generally causes an ESD sensitive item to give low output or other erroneous signals?
• What is NOT considered susceptible to ESD?
• Name the four common ESD discharge models used in industry testing.
• What happens when humidity is too low in an ESD-controlled environment?
• What is the purpose of grounding in ESD control?
• Which version of the ESD symbol is described as a triangle with a hand in it?
• The charges on two substances rubbed together are
• What is one effective method to reduce ESD risk in a cleanroom environment?
• When ESDS items are tested away from the console, which item is specifically required?
• Which device feature is most at risk during a strong ESD event?
• Name a common ESD compliance standard used in industry and what it covers.
• What is the purpose of wrist strap testers?
• During soldering or rework, which practices support ESD control?
• The ESD Control area survey document is stored in which location?
• How should ESDS devices be stored and labeled?
• What is the purpose of applying anti-static coatings on surfaces in an ESD environment?
• What is the recommended method for transferring ESDS devices between rooms or departments?
• Which pair is listed as a source of static electricity?
• What should be done after discovering an ESDS item outside its packaging?
• The quantity of charge accumulated is dependent on the size, shape, composition, and electrical __________ of the substances making up the charging and insulating bodies.
• ___ humidity will aggravate existing ESD problems.
• In ESD control, the process of removing static charges from items by providing a path to ground is called.
• What is a typical failure mode for devices subjected to ESD?
• What is NOT a typical source of static electricity?
• What is the consequence of not using grounded tools during ESD-sensitive work?
• In an ESD audit report, who is typically identified as responsible for corrective actions and CAPA status?
• What does ESD stand for and why is it a concern for electronics?
• After an ESD event, what is the first action recommended to prevent latent damage?
• What is required at the bench to support distant ESDS testing?
• Which model is most relevant when boards carry charge during handling or transport?
• Which ESD failure type is described as partial electronic part breakdown of an ESDS item and generally causes the item to give low output or other erroneous signals?
• Electrical Integrity in ESD control equipment refers to which aspect?
• Which action focuses on reducing the risk of recurrence by addressing root causes after an ESD event?
• Which environmental change helps alleviate ESD problems but does not fully eliminate them?
• What is the primary function of ionizers in an ESD-controlled environment?
• Cabinets that have been designated for ESDS storage should be properly _____________.
• Which discharge type is considered detrimental to electronic devices?
• A ______ breakdown results in a high leakage path around the junction due to the narrowing of the junction space charge layer of the surface.
• Which instrument measures resistance of static control materials in the range 1 to 1000 megohms?
• Where should ESDS items be placed within an EPA to minimize charging?
• Which flooring has the same damaging effect to ESDS items as carpeted flooring?
• Which is NOT susceptible to ESD?
• A ___________ monitor provides continuous assurance the wrist strap is working and alarms immediately when a disconnect from the technician to the ground occurs.
• Where should ESDS items be handled outside of ESD protective packaging?
• Only handle ESDS items outside of ESD protective packaging or non-protective packaging materials at ESD ________.
• Which of the following is a plausible consequence of a catastrophic ESD event?
• Which breakdown is typically preceded by a thermal secondary breakdown and forms a resistance path across the junction?
• In which environment is static electricity most likely at its highest level?
• Which breakdown occurs when the dielectric reaches its electric field threshold and bonded electrons break free and flow with the dielectric?
• Which statement best describes the ESD Control area survey document?
• Which material type primes generators of static electricity, difficult to ground?
• Which device is used to measure resistance on static dissipative work surfaces, floors, shoes or garments?
• Which action defines the boundary of the workspace in ESD control?
• Dissipative materials are defined by charge flowing to ground more slowly and in a controlled manner.
• After an ESD event, which action should be completed to ensure the device is safely re-handled?
• What is the recommended grounding practice for equipment in an ESD Protected Area (EPA)?
• If fragile assemblies with exposed ESDS parts are too fragile for transport in bags or pouches, then lidded _________ tote boxes with non-corrosive conductive foam interiors shall be used.
• Components on equipment boards are still ______ to current and voltage if leads are attached to the board.
• If ESDS items under test are distant, which device is required at the bench?
• ESD test equipment verifies ______ of ESD control products.
• What does NOT require proper ESD marking?
• Which statement best describes ESDS packaging requirements?
• Static discharge can occur without direct contact between two objects.
• ESD charging is the transfer of ________ from within the body, or from one body to another.
• Which step involves examining the device for signs of damage that would not be apparent at a glance?
• Which of the following is NOT a principal component of static control workstations?
• In HBM testing, what is the purpose of the series resistor?
• What information does an ESD label convey on ESDS devices?
• Which action is typically part of preparing the ESD work area documentation?
• Which instrument measures the air speed coming from the ionizer during periodic inspections?
• For ESDS storage cabinets, which practice is recommended?
• Which ESD failure type is the total failure of electronic parts, assemblies, and equipment caused by static discharge?
• ESD sensitive items can be partially damaged by exposure to static charge levels as low as __ percent of their susceptibility values.
• Damaging static discharges may affect the quality, durability, and reliability of electronic equipment.
• Which device tests the ionizer's effectiveness by measuring charge decay times and offset voltages for the positive and negative charges?
• What is the periodic testing interval for stored ESD work surfaces?
• Which element is associated with the common ground point in ESD symbol descriptions?
• ESD susceptibility stops when a Faraday Cage exists around the item.
• Which failure mechanisms are energy dependent?
• Which action constitutes implementing measures to prevent recurrence of ESD damage?
• What does ESD stand for?
• Which action should be performed to immediately safeguard the device after an ESD event?
• Charge flows to ground more slowly and controlled.
• What action should be taken if an ESDS item is found outside its EPA or packaging?
• What is the role of ionizers in ESD control?
• Which step would you perform to verify that the device's functions operate as intended after ESD?
• How can you reduce tribocharging of plastics used in packaging?
• How does ESD risk typically manifest on automated assembly lines?
• Why is maintaining consistent ESD controls across vendors important?
• Which action is recommended to ensure the device is properly prepared for subsequent testing after an ESD event?
• Which description correctly identifies the symbol described as a triangle with a hand in it?
• In ESD terms, how do static-dissipative materials differ from conductive materials?
• What interior should lidded conductive tote boxes have for fragile ESDS parts?
• Current-cause failures primarily affect ______ devices.
• What is the role of testing and calibration of ESD equipment such as wrist strap testers, ionizers, and mats?
• Shielding made to withstand ESD generating fields including those generated from outside sources, is type __.
• ESD Controls are the same for every work area.
• Which activity directly assesses the device's functional integrity following an ESD event?
• A ____ breakdown is usually preceded by a thermal secondary breakdown and results in the formation of a resistance path across the junction.
• Damaging static discharges may affect the quality, __________, and reliability of electronic communications equipment.
• A ________________ breakdown, also known as avalanche degradation, occurs when there is little diffusion of heat from the areas of power dissipation of semiconductors whereas temperatures can approach and reach a material's melt temperature resulting in junction shorts.
• What is the recommended practice for cleaning ESD protection materials?
• What is an ESD Protected Area (EPA) and what are its core components?
• To minimize future ESD problems, which action should be taken after an event?
• What is the benefit of having a properly grounded ESD workstation?
• A(n) __________ is required when ESD work areas use bench top ionizers.
• Name two types of ESD-safe footwear.
• How are ESDS devices identified?
• Ensure the ground connection of an ESD Control Workstation has sufficient _________ strength to prevent inadvertent ground disconnection.
• What category of failure causes thermal and path breakdown in bipolar devices such as diodes and electronic circuits with junctions?
• Which is a core component of the ESD control program pillars?
• A copy of which document shall be kept in a readily accessible file in ESD work areas?
• Which device verifies that ground conductors are effective for static drainage?
• Which step involves a visual inspection for any obvious damage after an ESD event?
• The _________ custom static control work station is one in which an existing workbench is retrofitted with an anti-static (dissipative) work surface providing extra protections from damage for delicate ESDS items.
• You can handle ESDS items outside of protective packaging on an ESD flooring system.
• Which of the following best describes an ESD-safe tool?
• What category of failure is the cause of most damage in metal-oxide semiconductors and film type resistor packages commonly used in voltage-divider circuitry by breaking down the dielectric medium of the device?
• Which fabric is NOT a static generating source?
• ESDS items can be partially damaged or weakened by exposure to static charge levels as low as what percent of their susceptibility levels?
• On packaging, where should ESD labels be placed?
• In the sequence of post-ESD procedures, which step confirms there are no functional faults detected?
• How can humidity and temperature be used to control ESD risk without compromising electronics?
• Which of the following combinations models a human discharging into a device in HBM testing?
• What is the Charged-Device Model (CDM) and why is it particularly challenging for devices?
• What is the primary purpose of an ESD control program in manufacturing and handling of ESDS devices?
• Which term describes the material used to shield ESDS items from electrostatic fields?
• __________ impede the free flow of electrons, and __________ permit the free flow of electrons.
• What is latent damage in ESD terms and why is it a concern?
• Which device provides grounding for distant ESDS testing?
• How does triboelectric charging occur and how can it lead to an ESD event?
• Which ESD model involves a charged device discharging directly to ground or a handler?
• What is the primary purpose of ESD-safe soldering equipment?
• After an ESD event, which step specifically looks for damage that may not be immediately visible?
• Why is humidity control often recommended in ESD-sensitive environments?
• During repackaging of an ESDS item, what verification should be performed?
• Anti-Static materials include virgin cotton, wood, and paper products.