LED焊接保存常识.doc

1,Operating and Inspection Instructions:(1) Soldering with a cauterant: The interval should not be more than 3 senconds and not be less than 2mm to the epoxy ,the temperature of cauterant tip should not be higher than 300oC.(2) Dipping-solder: The interval should not be more than 5 senconds and not be less than 2mm to the epoxy ,the temperature should not be higher than 260oC.2,Forming of lead pin(1) 2mm to the epoxy is the Minimum interval for bending lead pin.(2) Tongs must be used while the pin is being formed,or we can ask some professional person to do it.(3) Any forming on lead pin must be finished before soldering.(4) The interval between pins must be identical to which on the circuitry board.3，Mounting(1) Pay attention to putting kinds of partners in correct anode and cathode .No part is allowed to be near to some heated componets .It must be working under the margin condition demanded.(2) Avoid mounting while lead pin is distorted.(3) Calculate the holes interval and tolerance in circuitry board and pins before mounting,so as not to cause any exorbitant stress on pins.(4) Localizer（guide sheath） is one of tools recommended for having the position fixed.(5) Avoid any shaking or exorbitant stress on LED before the temprature fall to normal.4,CleaningPay more attention to cleaning when some chemist is used,because some of these chemist,such as chlorethylene,acetone,may damage the surface of epoxy and fade it as well.We can clean and dig LED with ethano within 3 minutes in normal temperature.5,Operating and storage temprature(1)LED Lamps: Topr 25oC 85oC Tstg 40oC 100oC(2)LED Displays: Topr 20oC 70oC Tstg 20oC 85oC(3)Out-Door LED lamps: Topr 30oC 60oC Tstg 20oC 70oC安装方法|清洁|成形|焊接|电流|判定的项目和标准|安装方法 注意各类器件外线的排列，以防极性装错。器件不可与发热元件靠得太近，工作条件不要超过其规定的极限。 务必不要在引脚变形的情况下安装LED。 当决定在孔中安装时，计算好面孔及线路板上孔距的尺寸和公差以免支架受过度的压力。 安装LED时，建意用导套定位。 在焊接温度回到正常以前，必须避免使LED受到任何的震动或外力 (1) Pay attention to arrange the pins or leads, in order to avoid making the wrong polar. No part is allowed to be near to some heated components. It must be working under the margin condition demanded.(2) Avoid mounting while lead pin is distorted.(3) Calculate the holes interval and tolerance in circuitry board and pins before mounting, so as not to cause any exorbitant stress on pins.(4) Localizer（guide sheath） is one of tools recommended for having the position fixed.(5) Avoid any shaking or exorbitant stress on LED before the temperature fall to normal.返回页首 清洁 请勿用有机溶剂(如丙酮、天那水等)清洗或擦拭发光管胶体,使得环氧树酯表面粗化,造成发光 不正常或者胶体内部破裂,导致发光管内部金丝与芯片或芯片与支架的连接破坏，造成不发光或发光不 正常；发光二极管的管脚外表为镀银或镀锡，请勿破坏其表面镀层，以免造成氧化过快。如必须清洁，请用酒精清洁不超过一分钟，强烈建议用超声波清洗发光二极管。 Pay more attention to cleaning when some chemist is used, because some of these chemist, such as chloroethylene, acetone, may damage the surface of epoxy and fade it as well, or damage its bonding of gold wire and chip, or damage the bonding of chip and Leads, all those will lead to failure to lighting; Pay attention to protect the surface of pins, for it is silver-gilt or tinned, to avoid accelerated oxidation. Dont over 1 minutes while Cleaned by ethanol, if cleaning is necessary. Cleaned by super-sonic machine is recommended. 返回页首 形成 LED在弯脚或折脚时请不要离胶体太近或紧靠LED的胶体，应与胶体边缘保持2mm以上的距离，否则会使LED胶体里面胶体与金线分离；管脚在同一处的折叠次数不能太多 (1) 2mm to the epoxy is the Minimum interval for bending lead pin.(2) Tongs must be used while the pin is being formed (3) Any forming on lead pin must be finished before soldering.(4) The interval between pins must be identical to which on the circuitry board. (5) Dont form the pins several times at the same point返回页首 焊接 烙铁焊接：烙铁（最高30W）尖端温度不超过300；焊接时间不超过3秒；焊接位置至少离胶体2毫米。 浸焊：浸焊最高温度260；浸焊时间不超过5秒；浸焊位置至少离胶体2毫米。 请勿带电作业。 (1) Soldering by cauterant: The interval time should not be more than 3 seconds and not be less than 2mm to the epoxy ,the temperature of cauterant tip should not be higher than 300oC.(2) Dipping-solder: The interval should not be more than 5 seconds and not be less than 2mm to the epoxy ,the temperature should not be higher than 260oC.返回页首 电流 由于LED具有随着电压稍加而电流迅速增加之特性，过高的电流会引起LED灯的烧坏及亮度的超速衰减，应加上一个电阻与LED串联，起到限流作用，LEDs应在相同的电流条件下工作，一般建议通LED之电流为20mA. Resistor is recommended to connect in series with LED, in order to limit the current. For LED has one character, that is, while the voltage increase, the current will be increase rapidly. The volume of current should be the same for all LEDs in application, and 20mA is recommended.返回页首 判定的项目和标准SAMPLING PLANU.S. Ministry of defence MIL-STD-105E level II (Single Sample Plans)INSPECTION ITEMS AND CRITERION FOR JUDGEMENTMeasuring Methods for Light Emitting Diodes (No. 11830) and Light Emitting Diodes (No.11829).Stipulated by Ministry of Economical Affairs of R.O.C. and by reference to QC standards prevailing in prominent LED plants worldwide.RELIABILITY TESTSGeneral Provisions for Environmental Tests of CNS-Categorized Electronics Parts, 3623-3634, 567, 11233-11238, and U.S. Ministry of National Defence MIL-STD-750 Specifications. TEST CONDITIONS THERMAL SHOCKTEST LED placed in a chamber (-44C) for 20 minutes, temperature increased instantaneously to + 88C for 20 minutes.The duration of the test shall be for 10 complete cycles.HUMIDITYTEST LED placed in humidity chamber which is maintained at 40C, 95% R.H.The duration of test is for 96 hours.LIFETEST LED connected to a source of power and charged with 10mA at room temperature (25C) for 1000 hours.SOLDERABILITYTEST The pins of LED (1.6mm f