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جمال محمد صلوات - تكنولوژیsmd چیست؟
 
جمال محمد صلوات
السلام علیك یا اباعبدالله الحسین
چهارشنبه 20 خرداد 1394

SMD LED چیست(اس ام دی ال ای دی)؟


 مخفف Surface Mounted Device می باشد که به تکنولوژی در ساخت محصولات الکترونیکی گفته می شود که برخلاف قطعات DIP برپایه لحیم کاری بدون استفاده از سوراخ بر روی بورد بنا شده است.تکنولوژی SMD در LED ال ای دی ها کاربرد فراوانی دارد ، به طوری که اکثر قطعات ال ای دی LED مورد استفاده در موارد روشنایی و نورپردازی برپایه این تکنولوژی ساخته شده اند.

مزایای تکنولوژی اس ام دی SMD برای محصولات ال ای دی LED مورد استفاده در روشنایی و نورپردازی :

SMD

همان طور که پیش از این در مبحث ال ای دی های دی آی پی DIP LED  گفته بودیم ، مشکل اصلی ال ای دی های DIP عدم امکان استفاده از هیت سینک های خارجی است.برای رفع این مشکل و در نتیجه امکان بالا بردن توان و طول عمر ال ای دی LED ها و همچنین بهبود کیفیت لحیم کاری ال ای دی LED ها ، تولید کنندگان به تولید ال ای دی LED های اس ام دی SMD روی آوردند.این ال ای دی LED ها دارای دو یا چند پایه برای لحیم کاری به اضافه یک پد مخصوص برای انتقال حرارت هستند.معمولا جنس این پد از جنس مس با کیفیت است و ال ای دی LED هایی که فاقد مس مرغوب یا فلزات مناسب تر هستند در انتقال حرارت به مشکل بر خواهند خورد و دارای طول عمر مناسب نخواهند بود.

ادام مطلب را در زیر بخوانید..........

نمایی از یک ال ای دی اس ام دی SMD LED

نمایی از یک ال ای دی اس ام دی SMD LED

چیپ های اس ام دی دارای انواع مختلف می باشند.بر خلاف تصور عموم مرد ، ال ای دی های پاور Power LED نیز به علت شیوه لحیم کاری آن ها جز دسته اس ام دی SMD ها قرار می گیرند.

ال ای دی پاور Power LED ادیسون

ال ای دی پاور Power LED ادیسون

از انواع این ال ای دی LED ها می توان به چیپ های SMD اس ام دی ۵۰۵۰ ، ۳۵۲۸ ، ۵۶۳۰ و غیره اشاره کرد که در ال ای دی استریپ ها Strip LED ، نواری و خطی کاربرد دارند.

چیپ ال ای اس ام دی 5630 5630 SMD LED Chip

چیپ ال ای اس ام دی ۵۶۳۰
۵۶۳۰ SMD LED Chip

از نکاتی که باید در مورد چیپ های ال ای دی اس ام دی SMD LED Chips اشاره کرد استفاده از سیم های طلایی Golden Wires در ساختار آن هاسدت ، در زیر چند تصویر نمونه را برای درک بهتر موضوع قرار می دهیم :

یک تصویر با کنتراست بالا از یک ال ای دی اس ام دی توان بالا High Power SMD LED Chip[

یک تصویر با کنتراست بالا از یک ال ای دی اس ام دی توان بالا High Power SMD LED Chip

ساختار یک پاور ال ای دی Power LED

ساختار یک پاور ال ای دی Power LED

همان طور که گفتیم در چیپ های اس ام دی از سیم طلا Golden Wire بهره برده می شود ، لذا یکی از راه های تشخیص اس ام دی SMD ها از سی او بی COB ها همین است ، چرا که سی او بی COB ها به حای سیم های طلا از بورد هایی به منظور برقراری اتصالات بهره می برند.



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