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Wrist Straps and Heel Grounders - Vital ESD Protection!
As microelectronic components have become smaller and more sophisticated, the danger of their being damaged by electrostatic discharge (ESD) has become proportionally greater. Even very small charges—so small that an operator may not even notice them!—can seriously degrade or destroy many static-sensitive devices.
Making sure that operators are electrically discharged before they begin handling and assembly procedures isn’t enough to assure product safety. Even the slightest movements, such as shifting in a seat, can cause the regeneration of potentially disastrous charges. As a result, it has become crucial to provide proper grounding for operators at every manufacturing and packaging stage.
Conductive wrist straps provide the most reliable, economical safeguard against this regeneration of electrostatic charge. Because they maintain a continuous path to ground, they should be an integral part of the microelectronics work station. Terra offers a complete line to suit applications in even the cleanest environment.
Why Use Two 2-Meg Resistor Heel Grounders?
Terra highly recommends that personnel in static-sensitive areas wear two heel straps, one on each foot, to increase the integrity of the body-to-ground connection. Wearing a foot grounder on each foot ensures contact with ground via the ESD floor, even when one foot is lifted. This will more reliably remove static charges generated by human movement and more reliably protect ESDS devices.
For enhanced safety from accidental contact with equipment line voltage, we recommend using foot grounders with 2 megohm resistors. Underwriters Laboratories and OSHA recommend a minimum of 1 megohm resistance-toground (RTG) in order to limit electrical current exposure to a maximum of 0.00025 amperes. When an operator has both feet on the floor, with each foot grounder having a 1 megohm resistor in series with the ground path, then the operator’s combined RTG, in parallel, is only 1⁄2 megohm. That is, his equivalent resistance is halved and he is at risk of exposure to 0.00050 amperes in case of contact with 250 VAC line voltage.
By wearing two foot grounders, each with a 2 megohm resistor in series to ground, operators comply with the UL and OSHA recommendations at all times. The operator’s RTG is 2 megohms when one foot only is grounded, and he meets the minimum recommended resistance of 1 megohm RTG when both feet are grounded.
All our foot grounders with resistors have been tested by Underwriters Laboratory and are UL listed.
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Static-Sensing Ionizers by KeyenceStockedGroup of 4 products2005-PP-01 71965FromRequest QuoteSome ship in 5 - 7 daysISO 7 Icon
Stocked
1 Voltage1 Type4 Length4 Number of Emitters1 ISO ClassVoltage: PWR SUPLYType: IonizerLength: 14", 24", 33", 43"Number of Emitters: 4, 6, 12, 16ISO Class: ISO 5
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Blow-Off GunBalanced stream of ions neutralizes surfaces charges to eliminate static cling as a burst of clean air or nitrogen dislodges and removes particle. Low-voltage system is intrinscially safe, includes submicron particle filter
Ion BarProvides a continuous stream of static-neutralizing ions to protect sensitive materials against ESD; models available for attaching to cleanroom ceiling T-grid, laminar flow hood, or glove box
Ion Bar EmittersReplacement titanium ionizing emitter tips (pair)
Features and Benefits
Cleanroom Ionizing Blow-Off Gun
This cleanroom Ionizing Blow-off Gun neutralizes static surface charges to protect sensitive parts from electrostatic discharge (ESD); a controlled burst of clean air or nitrogen then removes particles.
Ionizing Gun: LED Power Indicator
LED indicates when the Cleanroom Ionizing Blow-Off Gun is discharging ions and emitting clean air or nitrogen; low-voltage power source is intrinscially safe and meets static decay requirements
Desiccator Cabinet Ionizing Module
Ionizing modules are available for desiccator cabinets, glove boxes and other enclosures to ensure static-safe storage and processing (shown: ionizing unit on 2-chamber desiccator)
Ionizing Bar Mounts to Cleanroom Ceiling
Intrinsically safe low-voltage ionizing bar mounts to a fan/filter unit on a cleanroom ceiling or inside a laminar flow hood to neutralize static charges on the work station below.
Ion Guns & Ionizers
Terra Universal ionizing Bar: Static-Decay Test- Ionizing Blow-Off Gun Demonstration
- Static-Neutralizing Blow-Off Gun
- Ionizing Bar Mounts to Hood or Cleanroom to eliminate ESD
Static decay test using charged plated monitor placed below a cleanroom-mounted ionizing bar | 2005-05A displayed Terra Universal ionizing Bar: Static-Decay Test Watch us put our ion bar to the test in this simulation using a charged surface in a cleanroom. We record the time needed to neutralize the positive and negative charges, creating a static-free working area.
Demonstration video showing how the Ionizing Blow-Off Gun operates Ionizing Blow-Off Gun Demonstration This video demonstrates how the Ionizing Blow-Off Gun eliminates static charges from surfaces and components (includes static-decay test).
This Ionizing Blow-Off Gun neutralizes statuc charges and removes particles with a burst of clean air or nitrogen | 2005-55 displayed Static-Neutralizing Blow-Off Gun This Ionizing Blow-Off Gun neutralizes statuc surface charges to protect sensitive parts from electrostatic discharge (ESD); a controlled burst of clean air or nitrogen then removes particles.
Static-neutralizing bars safely neutralize surface charges to protect against electro static discharge (ESD) | 2005-31 displayed Ionizing Bar Mounts to Hood or Cleanroom to eliminate ESD the Fan/Filter Unit of a cleanroom or laminar flow hood disperses the balanced stress of ion emitted by the Ionizing Bar, neutralizing static charges on the work surface to protect senstive parts against electro-static discharge (ESD).
