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XSL-375-TB-5 Datasheet(PDF) 4 Page - Roithner LaserTechnik GmbH |
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XSL-375-TB-5 Datasheet(HTML) 4 Page - Roithner LaserTechnik GmbH |
4 / 5 page 05.08.2010 XSL-375-TB-5 4 of 5 3. Soldering Conditions • Solder the LEDs no closer than 3 mm from the base of the lead. • Recommended soldering conditions: Dip Soldering Hand Soldering Pre-Heat 120 °C Max. Temperature 350 °C Max. Pre-Heat Time 60 Seconds Max. Soldering Time 3 Seconds Max. Solder Bath Temperature 260 °C Max. Dipping Time 5 Seconds Max. Dipping Position No lower than 3 mm from the base of the epoxy bulb Position Not closer than 3 mm from the base of the epoxy bulb • Although the recommended soldering conditions are specified in the above table, dip or hand soldering at the lowest possible temperature is desirable for the LEDs. • A rapid-rate process is not recommended for cooling the LEDs down from the peak temperature. • Dip soldering and hand soldering should not be done more than one time. • Do not apply any stress to the lead particularly when heated. • The LEDs must not be repositioned after soldering. • After soldering the LEDs, the lead should be protected from mechanical shock or vibration until the LEDs return to room temperature. • Direct soldering onto a PC board should be avoided. Mechanical stress to the resin may be caused from warping of the PC board or from the clinching and cutting of the lead frames. When it is absolutely necessary, the LEDs may be mounted in this fashion but the customer will assume responsibility for any problems. Direct soldering should only be done adter testing has confirmed that no damage, such as wire bond failure or resin deterioration, will occur. Those LEDs should not be soldered directly to double sided PC boards because the heat will deteriorate the epoxy resin. • When it is necessary to clamp the LEDs to prevent soldering failure, it is important to minimize the mechanical stress on the LEDs. • Cut the LED leads at room temperature. Cutting the leads at high temperature may cause the failure of the LEDs. 4. Static Electricity • The LEDs are very sensitive to Static Electricity and surge voltage. So it is recommended that a wrist band or an anti-electrostatic glove be used when handling the LEDs. • All devices, equipment and machinery must be grounded properly. It is recommended that precautions should be taken against surge voltage to the equipment that mounts the LEDs. |
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