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NESM026D Datasheet(PDF) 6 Page - NICHIA CORPORATION |
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NESM026D Datasheet(HTML) 6 Page - NICHIA CORPORATION |
6 / 17 page NICHIA STS-DA1-2803B <Cat.No.140310> 5 SOLDERING • Recommended Reflow Soldering Condition(Lead-free Solder) • Recommended Hand Soldering Condition Temperature 350°C Max Soldering Time 3sec Max ● Recommended Soldering Pad Pattern (単位 Unit: mm) 1 1.8 1.8 4.6 * This LED is designed to be reflow soldered on to a PCB. If dip soldered, Nichia cannot guarantee its reliability. * Reflow soldering must not be performed more than twice. Hand soldering must not be performed more than once. * Avoid rapid cooling. Ramp down the temperature gradually from the peak temperature. * Nitrogen reflow soldering is recommended. Air flow soldering conditions can cause optical degradation, caused by heat and/or atmosphere. * Repairing should not be done after the LEDs have been soldered. When repairing is unavoidable, a double-head soldering iron should be used. It should be confirmed beforehand whether the characteristics of the LEDs will or will not be damaged by repairing. * When soldering, do not apply stress to the LED while the LED is hot. * When using a pick and place machine, choose an appropriate nozzle for this product. * This product can differ in optical characteristics depending on both the number of reflow cycles and reflow temperature conditions. In a single display, only LEDs with both the same number of reflow cycles and reflow temperature conditions should be used regardless of the application type (e.g. rental and/or permanent installations). * The recommended soldering pad pattern is designed for attachment of the LED without problems. When precise mounting accuracy is required, such as high-density mounting, ensure that the size and shape of the pad are suitable for the circuit design. * Consider factors such as the reflow soldering temperature, hand soldering temperature, etc. when choosing the solder. * When flux is used, it should be a halogen free flux. Ensure that the manufacturing process is not designed in a manner where the flux will come in contact with the LEDs. * Make sure that there are no issues with the type and amount of solder that is being used. 120sec Max Pre-heat 180 to 200°C 260°CMax 10sec Max 60sec Max Above 220°C 1 to 5°C per sec |
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