LED Device Specification - Lifecycle Revision 2 - Technical Documentation

1. Product Overview

Wannan takardar ƙayyadaddun fasaha tana magana ne akan wani na'urar LED (Light Emitting Diode) ta musamman. Babban abin da takardar ta mayar da hankali akai shi ne sarrafa tsawon rayuwarta da sarrafa bita, wanda ke nuna cewa ƙirar samfurin ta cika balaga kuma ta tsaya tsayin daka. An yi ta ambaton "Bita: 2" da "Lokacin aiki: Har abada" akai-akai, wanda ke nuna cewa wannan takarda ce ta ƙarshe ta ƙayyadaddun na'urar da aka yi bita aƙalla sau ɗaya a baya, kuma yanzu ta zama takarda ta dindindin da ake kallo. Irin waɗannan na'urori masu cikakken bayanai, kasuwarsu ta haɗa da masana'antun da ke buƙatar samar da amintaccen samfurin haske na dogon lokaci, kamar haske na gabaɗaya, hasken mota, alamun kasuwanci da kayan lantarki na masu amfani. Babban fa'idarta shi ne kwanciyar hankalin da aka rubuta, wanda ke ba injiniyoyi da ƙungiyoyin sayayya amincewa cewa za a sami daidaito a cikin na'urar da amintaccen samarwa a tsawon rayuwar samfur.

2. Document Lifecycle and Revision Information

Abubuwan da aka bayar suna mai da hankali gaba ɗaya akan bayanan meta na takardar. An yiwa matakin tsawon rayuwar alama a sarari da "Bita", lambar bita kuma "2". Wannan yana nuna cewa an sabunta abubuwan fasaha na wannan takardar ƙayyadaddun bayanai daga sigar da ta gabata (Bita 1). An yiwa "Lokacin aiki" alama da "Har abada", ma'ana wannan sigar takardar tana nufin zama dindindin, maras ƙarewa, abin kallo na wannan takamaiman bita na samfur. An rubuta ranar saki na Bita 2 a matsayin 1 ga Disamba, 2014. Wannan tarihin ranar yana nuna cewa an daskare ƙayyadaddun samfur a lokacin, kuma tun daga wannan lokacin ana samar da ko kuma ana samar da na'urar bisa waɗannan sigogi. Fahimtar wannan tarihin bita yana da mahimmanci ga bin sawu, musamman lokacin kwatanta ayyuka ko maye gurbin na'urori a cikin ƙirar da ake da su.

3. Technical Parameters: In-depth and Objective Interpretation

Ko da takaitaccen yanki na PDF bai lissafa takamaiman sigogi na lambobi ba, amma ga na'urar da ke da bita ta ƙarshe, daidaitaccen ƙayyadaddun LED yawanci ya ƙunshi sassa masu zuwa. Waɗannan an samo su ne daga daidaitattun ayyukan masana'antu na irin waɗannan takaddun.

3.1 Photometric and Color Characteristics

本节将详述光输出和质量。关键参数包括光通量（以流明lm为单位），它定义了光的感知功率。对于定向LED，可能会指定发光强度（以坎德拉cd为单位）。主波长（针对单色LED）或相关色温（CCT，针对白光LED，以开尔文K为单位）定义了出光的颜色。对于白光LED，显色指数（CRI，Ra）是一个关键指标，表示在光源下颜色呈现的自然程度，对于许多应用而言，更高的值（例如>80）是理想的。

3.2 Electrical Parameters

Ƙayyadaddun lantarki shine tushen ƙira na'urar kewayawa. Ƙarfin lantarki na gaba (Vf) shine raguwar ƙarfin lantarki a ƙarshen LED yayin aiki a ƙayyadaddun igiyar ruwansa, ga farin LED na yau da kullun, yawanci yana tsakanin 2.8V zuwa 3.6V. Igya ta gaba (If) ita ce igiyar aiki da aka ba da shawarar (misali 20mA, 60mA, 150mA), wanda ke shafar fitar da haske da rayuwa kai tsaye. Ƙarfin lantarki na baya (Vr) yana ƙayyade matsakaicin ƙarfin lantarki na baya da aka yarda kafin lalacewa mai yuwuwa. Yin amfani da wutar lantarki ana ƙididdige shi azaman Vf * If, dole ne a sarrafa zafi.

3.3 Thermal Characteristics

Ayyukan LED da rayuwa sun dogara sosai akan zafin jiki. Thermal resistance daga junction zuwa muhalli (RθJA) wani muhimmin ma'auni ne, wanda ake bayyana shi da °C/W, yana nuna yadda zafi ke wucewa daga guntu na LED (junction) zuwa muhallin da ke kewaye. Ƙananan ƙimar yana nuna ingantacciyar hanyar fitar da zafi. Matsakaicin zafin junction (Tj max) shine mafi girman zafin da guntun semiconductor da kansa ya yarda da shi, yawanci yana kusa da 125°C. Wuce wannan iyaka yana rage yawan kiyaye haske da sauri, kuma yana iya haifar da gazawa mai tsanani.

4. Binning System Description

Samuwar LED tana da bambance-bambance na halitta. Rarrabawa shine tsarin rarraba LED zuwa ƙungiyoyi (bins) bisa ga muhimman ma'auni, don tabbatar da daidaito a cikin jeri.

4.1 Wavelength/Color Temperature Binning

Ana rarraba LED bisa ga daidaitaccen tsawon zango (don LED masu launi) ko kuma alaƙar zafin launi (don LED farin haske). Tsarin rarrabawar LED farin haske na yau da kullun na iya rarraba LED cikin 2 mataki ko 3 mataki na MacAdam ellipse a kan taswirar launi, yana tabbatar da ƙarancin bambancin launi da ake iya gani tsakanin raka'a. Matsakaicin CCT na yau da kullun sun haɗa da 2700K, 3000K (warm white), 4000K (neutral white), da 6500K (cool white).

4.2 Luminous Flux Binning

LEDs are also binned based on their light output at a specific test current. A bin code (e.g., luminous flux bin) indicates the minimum and maximum luminous flux for that group. This allows designers to select a bin that meets their minimum brightness requirements while controlling cost, as bins with higher luminous flux are typically more expensive.

4.3 Bincike na ƙarfin lantarki mai gaba

Binning by forward voltage (Vf) aids in designing efficient drive circuits, especially when multiple LEDs are connected in series. Matching Vf bins ensures more uniform current distribution and brightness across the array, thereby improving overall system performance and reliability.

5. Bincike na lanƙwasa aiki

Graphical data provides deeper insight than simple tabular specifications.

5.1 Lanƙwasa I-V

Wannan lanƙwasa yana nuna alaƙar da ba ta layi tsakanin halin yanzu mai zuwa da ƙarfin lantarki mai zuwa. Yana da mahimmanci don zaɓar mai tuki mai iyakancewa da ya dace. Lanƙwasa tana nuna ƙarfin lantarki mai iyaka (inda halin yanzu ya fara gudana sosai) da juriya mai motsi na yankin aiki.

5.2 Halayen zafin jiki

Muhimman jadawali sun haɗa da haske mai gudana vs. zafin haɗin gwiwa, yawanci suna nuna fitarwa yana raguwa yayin da zafin jiki ya tashi. Ƙarfin lantarki mai zuwa vs. zafin haɗin gwiwa shima yana da mahimmanci, saboda Vf yana da ƙimar zafin jiki mara kyau (yana raguwa tare da hawan zafin jiki), wanda zai iya shafar tsarin tuƙi mai ƙarfin lantarki mai dindindin.

5.3 Spectral Power Distribution (SPD)

Ga LED mai farin haske, zanen SPD yana nuna ƙarfin dangi na haske a cikin kewayon bakan da ake iya gani. Yana bayyana kololuwar LED mai bugun shuɗi da kuma mafi faɗin bakan fitarwa na phosphor, yana ba da tabbacin gani na CCT, kuma yana ba da damar lissafin ma'auni kamar CRI da kewayon launi.

6. Mechanical and Packaging Information

Physical specifications ensure correct integration into the final product.

6.1 Dimension Drawing

Detailed mechanical drawings provide key dimensions: package length, width, and height (e.g., 2.8mm x 3.5mm x 1.2mm for a 2835 package). It also shows lens shape, lead frame details, and any mounting features.

6.2 Pad Layout and Pad Design

Provides recommended pad patterns for PCB (Printed Circuit Board) layout, including pad dimensions, spacing (pitch), and shape. Following this design is crucial for reliable soldering and optimal heat transfer from the LED's thermal pad (if present) to the PCB.

6.3 Polarity Marking

Datasheet yana nuna filin anod (+) da katod (-). Yawanci ana nuna shi ta hanyar zane mai ramuka, yankakken kusurwa, alama akan na'ura, ko tsayin filin daban-daban. Daidaitaccen polarity shine abin da ake buƙata don aikin na'urar.

7. Soldering and Assembly Guide

Daidaitaccen sarrafawa yana tabbatar da dogaro da hana lalacewa.

7.1 Reflow Soldering Temperature Profile

Yana ba da shawarar siffar zazzabi na solder na reflow, gami da dumama, da'ira, reflow (kololuwar zazzabi) da saurin sanyaya. Matsakaicin kololuwar zazzabi (misali, 260°C na 'yan dakiku) da lokacin sama da layin ruwa (TAL) sune mahimman iyakoki don guje wa lalata ruwan tabarau na LED epoxy ko haɗin ciki.

7.2 Precautions and Operations

Guidelines include using ESD (Electrostatic Discharge) protection measures, avoiding mechanical stress on the lens, not using certain solvents for cleaning, and ensuring controlled soldering iron tip temperature during manual repairs.

7.3 Yanayin Ajiya

Recommended storage conditions to prevent moisture absorption (which may cause the "popcorn" effect during reflow soldering) and material degradation. This typically involves storage in a dry environment with moderate temperature and low humidity, using moisture barrier bags for long-term storage.

8. Bayanin Marufi da Oda

8.1 Ƙa'idodin Marufi

Describes the packaging form, such as tape dimensions (e.g., 8mm or 12mm tape width), reel quantities (e.g., 2000 or 4000 pieces per reel), and embossed carrier tape specifications. This information is necessary for automated pick-and-place assembly equipment.

8.2 Bayanin Alama

It explains the information printed on the reel label, which typically includes part number, quantity, lot number, date code, as well as luminous flux and color binning codes.

8.3 Part Number Coding Rules

Interprets the part number structure. A typical part number may contain codes for package type, color temperature, luminous flux bin, forward voltage bin, and Color Rendering Index (CRI). This allows for precise ordering of desired performance characteristics.

9. Application Recommendations

9.1 Typical Application Scenarios

Based on its inferred specifications (Stable Revision, Common Package), this LED is suitable for a wide range of applications requiring reliable, mid-power illumination. These applications include LED bulbs and tubes for residential/commercial lighting, backlighting for LCD displays and TVs, automotive interior lighting, architectural decorative lighting, and general indicator lights.

9.2 Design Considerations

Key design factors include thermal management (using sufficient PCB copper area or a heatsink), driver selection (constant current drive is strongly recommended over constant voltage drive), optical design (lenses or diffusers for the desired beam shape), and ensuring electrical parameters (Vf, If) are compatible with the chosen driver topology.

10. Kwatanta da bambance-bambancen fasaha

While a direct comparison requires specific competitor devices, the advantages of a device with a "Revision 2, Permanent" lifecycle status are clear. It offers design stability, reducing the risk of future changes requiring circuit redesign. Long-term supply simplifies supply chain management for products with long manufacturing lifespans. The very existence of a detailed, multi-revision datasheet demonstrates the manufacturer's commitment to product quality and customer support.

11. Tambayoyin da ake yawan yi (FAQ)

What does "Lifecycle Stage: Revision" mean?
It indicates that the product's technical specifications have been updated from a previous version. This document (Revision 2) supersedes the earlier version.

Why is the "Validity Period" listed as "Permanent"?
This indicates that the datasheet for this specific revision is a permanent reference document. The specifications for Revision 2 are fixed and will not expire or be automatically replaced.

How do I select the correct bin code when ordering?
Select the bin based on your application's requirements for color consistency (CCT/Wavelength bin), minimum brightness (Luminous Flux bin), and electrical matching (Voltage bin) in multi-LED designs. Please refer to the binning tables in the full datasheet.

Can I drive this LED directly with a constant voltage source?
It is not recommended. LEDs are current-driven devices. A small variation in forward voltage causes a large change in current, which can lead to overheating. Always use a constant current driver or a current-limiting resistor with a stable voltage source.

12. Misalan aikace-aikace na ainihi

Case 1: LED Tube Retrofit:Engineers designed a T8 LED tube. They selected this LED based on its luminous flux bin to meet the target lumen value, used the high CRI bin to provide quality light for the office, and ensured long life within the narrow aluminum housing based on its thermal characteristics. Stable binning guaranteed that the performance of the second production batch was identical to the first prototypes.

Case 2: Automotive Dome Light:Designers used this LED for interior dome lighting. The forward voltage binning allowed them to efficiently connect three LEDs in series to match the 12V automotive electrical system with a simple linear current regulator. The comprehensive datasheet, including soldering profiles, ensured the LEDs could withstand the high-temperature reflow soldering process used for vehicle PCB assembly.

13. Taƙaitaccen bayani game da yadda ake aiki

An LED is a semiconductor p-n junction diode. When a forward voltage is applied, electrons from the n-type material and holes from the p-type material recombine within the active region, releasing energy in the form of photons (light). The specific wavelength (color) of the emitted light is determined by the bandgap energy of the semiconductor material used (e.g., InGaN for blue/UV, AlInGaP for red/amber). White LEDs are typically created by coating a blue or UV LED chip with phosphor material. The phosphor absorbs some of the primary light and re-emits it at longer wavelengths (yellow, red), which mixes with the remaining blue light to produce white light of a specific CCT.

14. Technology Trends and Development

LED endüstrisi gelişmeye devam ediyor. Trendler arasında ışık verimliliğinin artırılması (watt başına daha fazla lümen), renk kalitesinin iyileştirilmesi (daha iyi kırmızı renk sunumu için daha yüksek CRI ve R9 değerleri), daha yüksek güvenilirlik ve daha uzun ömür elde edilmesi yer alıyor. Paket küçültme hala bir trenddir, daha iyi spektral kontrol ve daha yüksek verimlilik için yeni fosforların geliştirilmesi de öyle. Ayrıca, akıllı aydınlatma ve İnsan Merkezli Aydınlatma (HCL), gün boyunca CCT ve yoğunluğu ayarlanabilen, dinamik, ayarlanabilir beyaz ışık sistemleri oluşturmak için LED'lerin sensörler ve kontrolörlerle entegrasyonunu teşvik ediyor. Bu spesifikasyon belgesinde açıklanan cihazlar, bu devam eden teknolojik süreçte olgun ve kararlı bir düğümü temsil etmektedir.