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LED with an InGaN die is highly sensitive to voltage surges generated by the On/Off status change and discharges of static electricity through friction with synthetic materials,
which may cause severe damage to the die or undermine its reliability.
Damaged products may experience conditions such as extremely high reverse current, or a decrease of forward rise voltage, deteriorating its optical characteristic.
Stanley InGaN products are designed to withstand up to 1,000V under the EIAJ ED-4701/300 Test #304 (HBM)((Electrification model: C=100pF, R2=1.5KΩ)),
and are packed with anti-static components. However, the following precautions and measures are vital in ensuring product quality during shipment.
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1. Design Precautions
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If InGaN products are incorporated into the circuit design,
please make sure that surge voltage generated during the On/Off state change will not circulate directly to the product, by installing a protective circuit.
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2. Electrification/Static Electricity protection measures during operation.
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Stanley recommends the following precautions in order to avoid product (die) damage from static electricity, when an operator and other materials electrified by friction come into contact with the product.
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1.
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Do not place electrified non-conductive materials near the LED product.
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2.
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Avoid LED products from coming into contact with metallic materials
(Should the metallic material be electrified, the sudden surge voltage will most likely damage the product).
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3.
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Avoid a working process which may cause the LED product to rub against other materials.
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4.
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Install ground wires for any equipment, where they can be installed, with measures to avoid static electricity surges.
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5.
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Prepare a ESD Protective area by placing a Conductive Mattress (108 109Ω) and Ionizer to remove any static electricity.
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6.
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Operators should wear a protective wrist-strap.
(Typically, protective wrist-strap will be equipped with 1MΩ resistors in series connection.)
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7.
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Operators should wear conductive work-clothes, shoes and work on a conductive floor.
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8.
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To handle the products directly, Stanley recommends the use of ceramic, and not metallic, tweezers. If a soldering iron isused, the ground wire should be removed from the iron.
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3. Operating Environment
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1.
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A dry environment is more likely to cause static electricity. Although a dry environment is ideal for storage of LED products, during the soldering process, Stanley recommends an environment with approximately 50% humidity.
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2.
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Recommended static electricity level in the working environment is 150V, which is the same value as Integrated Circuits (which are sensitive to static electricity).
(150V is The representative value. Because itis llkely to differ according to the product. please deforehand. affirm it after the reguestof the specification)
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3.
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Container made of conductive material is recommended for storing the products.
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