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HLMP-0401 Datasheet(PDF) 8 Page - AVAGO TECHNOLOGIES LIMITED |
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HLMP-0401 Datasheet(HTML) 8 Page - AVAGO TECHNOLOGIES LIMITED |
8 / 8 page For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2015 Avago Technologies. All rights reserved. AV02-1554EN - June 24, 2015 Figure 7. Recommended wave soldering profile Precautions Lead Forming • The leads of an LED lamp may be preformed or cut to length prior to insertion and soldering into PC board. • If lead forming is required before soldering, care must be taken to avoid any excessive mechanical stress induced to LED package. Otherwise, cut the leads of LED to length after soldering process at room temperature. The solder joint formed will absorb the mechanical stress of the lead cutting from traveling to the LED chip die attach and wirebond. • It is recommended that tooling made to precisely form and cut the leads to length rather than rely upon hand operation. Soldering Conditions • Care must be taken during PCB assembly and soldering process to prevent damage to LED component. • The closest LED is allowed to solder on board is 1.59 mm below the body (encapsulant epoxy) for those parts without standoff. • Recommended soldering conditions: Wave Soldering Manual Solder Dipping Pre-heat Temperature 105°C Max. – Pre-heat Time 30 sec Max. – Peak Temperature 250°C Max. 260°C Max. Dwell Time 3 sec Max. 5 sec Max. • Wave soldering parameter must be set and maintained according to recommended temperature and dwell time in the solder wave. Customer is advised to periodically check on the soldering profile to ensure the soldering profile used is always conforming to recommended soldering condition. • If necessary, use fixture to hold the LED component in proper orientation with respect to the PCB during soldering process. • Proper handling is imperative to avoid excessive thermal stresses to LED components when heated. Therefore, the soldered PCB must be allowed to cool to room temperature, 25°C, before handling. • Special attention must be given to board fabrication, solder masking, surface plating and lead holes size and component orientation to assure solderability. • Recommended PC board plated through hole sizes for LED component leads: LED Component Lead Size Diagonal Plated Through Hole Diameter 0.457 x 0.457 mm (0.018 x 0.018 inch) 0.646 mm (0.025 inch) 0.976 to 1.078 mm (0.038 to 0.042 inch) 0.508 x 0.508 mm (0.020 x 0.020 inch) 0.718 mm (0.028 inch) 1.049 to 1.150 mm (0.041 to 0.045 inch) Note: Refer to application note AN1027 for more information on soldering LED components. LAMINAR WAVE BOTTOM SIDE OF PC BOARD HOT AIR KNIFE TURBULENT WAVE FLUXING PREHEAT 0 10 20 30 50 100 150 200 250 30 40 50 TIME – SECONDS 60 70 80 90 100 TOP SIDE OF PC BOARD CONVEYOR SPEED = 1.83 M/MIN (6 FT/MIN) PREHEAT SETTING = 150 °C (100C PCB) SOLDER WAVE TEMPERATURE = 245 °C AIR KNIFE AIR TEMPERATURE = 390 °C AIR KNIFE DISTANCE = 1.91 mm (0.25 IN.) AIR KNIFE ANGLE = 40 SOLDER: SN63; FLUX: RMA NOTE: ALLOW FOR BOARDS TO BE SUFFICIENTLY COOLED BEFORE EXERTING MECHANICAL FORCE. |
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