LED Component Datasheet - Revision 4 - Lifecycle Information - English Technical Document

1. Product Overview

Wannan takardar bayanan fasaha tana ba da cikakken bayani game da wani sashi na LED. Babban abin da aka fi mayar da hankali a cikin ɓangaren da aka ba da shi na takardar shine sanarwar a hukumance game da matsayin rayuwar samfurin da tarihin bita. An tabbatar da cewa sashi yana cikin matakin "Bita", wanda ke nuna cewa wani sigar samfurin ne mai aiki, wanda aka sabunta. An ƙayyade ranar saki a matsayin Oktoba 16, 2015, kuma an yiwa lokacin da ya ƙare alama a matsayin "Har Abada," wanda ke nuna babu wata ranar ƙarshen rayuwa da aka tsara a lokacin sakin wannan bita. Wannan kwanciyar hankali yana da mahimmanci ga ƙira na dogon lokaci na samfur da tsarin tsarin samar da kayayyaki.

Babban fa'idar amfani da sashi mai ƙayyadaddun rayuwa mai ƙarfi shine amincinsa a cikin masana'antu da ƙira. Injiniyoyi za su iya haɗa wannan sashi cikin tsarin su cikin kwarin gwiwa ba tare da damuwa game da lalacewa na gaba ba. Kasuwar da aka yi niyya ta haɗa da aikace-aikacen da ke buƙatar mafita mai ɗorewa, mai ɗorewa, kamar hasken gine-gine, alamar kasuwanci, alamomin masana'antu, da na'urorin lantarki na mabukaci inda aikin daidaitaccen aiki a tsawon lokaci ya fi muhimmanci.

2. Bincike na Fasaha mai zurfi

Yayin da abin da aka fitar na PDF ya mayar da hankali kan bayanan gudanarwa, cikakken takardar bayanan LED yawanci ya ƙunshi cikakkun ma'auni na fasaha masu mahimmanci ga injiniyoyin zane. Sashe masu zuwa suna zayyana mahimman ma'auni waɗanda za a bincika bisa daidaitattun takaddun masana'antu don irin waɗannan sassa.

2.1 Halayen Haske da Launi

Halayen hoto suna ayyana fitowar haske da inganci. Mahimman ma'auni sun haɗa da juzu'in haske (wanda aka auna a cikin lumens), wanda ke nuna jimlar ƙarfin hasken da aka fitar. Zazzabi mai alaƙa da launi (CCT) yana ayyana ko hasken ya bayyana dumi, tsaka-tsaki, ko sanyi mai fari, yawanci daga 2700K zuwa 6500K. Fihirisar Fitar Launi (CRI) ma'auni ne na ikon tushen haske na bayyana launuka na abubuwa daban-daban da aminci idan aka kwatanta da madaidaicin tushen haske ko na halitta, tare da ƙimar sama da 80 ana son su don yawancin aikace-aikace. Babban tsayin raƙuman ruwa ko kololuwar tsayin raƙuman ruwa yana ƙayyadad da launin LEDs masu launi ɗaya. Don fararen LEDs, ana ba da daidaitattun launi (x, y akan zanen CIE 1931) don tabbatar da daidaiton launi da rarrabawa.

2.2 Sigogin Lantarki

Electrical parameters are fundamental for circuit design. The forward voltage (Vf) is the voltage drop across the LED when operating at a specified forward current (If). This is a critical parameter for driver design. The typical forward current is the recommended operating current, often 20mA, 150mA, 350mA, or higher for power LEDs. Maximum ratings for forward current, reverse voltage, and power dissipation define the absolute limits beyond which the device may be permanently damaged. The electrostatic discharge (ESD) withstand voltage, typically specified per the Human Body Model (HBM), indicates the component's sensitivity to static electricity, a key factor for handling and assembly.

2.3 Halayen Zafi

LED performance and lifespan are heavily influenced by temperature. The junction temperature (Tj) is the temperature at the semiconductor chip itself. The thermal resistance from junction to solder point or ambient (Rth j-sp or Rth j-a) quantifies how effectively heat is conducted away from the chip. A lower thermal resistance is better. The maximum allowable junction temperature (Tj max) is the highest temperature the LED can withstand without degradation. Proper thermal management, involving heatsinks and PCB design, is essential to maintain Tj within safe limits, ensuring long-term lumen maintenance and reliability.

3. Bayanin Tsarin Binning

Manufacturing variations necessitate a binning system to group LEDs with similar characteristics, ensuring consistency in end products.

3.1 Binning Tsawon Zango / Zazzabi Launi

LEDs are sorted into bins based on their chromaticity coordinates or CCT. A typical binning structure uses a grid on the CIE chromaticity diagram. Tighter bins (smaller areas on the diagram) represent higher color consistency but may come at a higher cost. This is crucial for applications where multiple LEDs are used side-by-side, as visible color differences are undesirable.

3.2 Binning Kwararar Hasken Hasken

LEDs are also binned according to their light output at a standard test current. Bins are defined by a minimum and maximum luminous flux value. This allows designers to select LEDs that meet specific brightness requirements for their application, balancing performance and cost.

3.3 Binning Ƙarfafawa na Gaba

Forward voltage is binned to ensure predictable electrical behavior in series or parallel strings. Grouping LEDs with similar Vf values helps in designing efficient driver circuits and prevents current imbalance in parallel configurations, which can lead to uneven brightness and reduced lifespan.

4. Performance Curve Analysis

Graphical data provides deeper insight into LED behavior under varying conditions.

4.1 Current vs. Voltage (I-V) Curve

The I-V curve shows the relationship between the forward current through the LED and the voltage across it. It is non-linear, exhibiting a turn-on or knee voltage below which very little current flows. The curve is essential for determining the operating point and for designing constant current drivers, which are preferred over constant voltage drivers for LEDs.

4.2 Temperature Characteristics

Graphs typically show how forward voltage decreases with increasing junction temperature (a negative temperature coefficient) and how luminous flux degrades as temperature rises. Understanding these relationships is vital for designing thermal management systems to maintain optimal performance, especially in high-power or high-ambient-temperature applications.

4.3 Spectral Power Distribution

Taswirar rarraba bakan tana zana ƙarfin haske da aka fitar a kowane tsayin raƙuman ruwa. Ga fitilun LED masu tushen shuɗi da phosphor, tana nuna kololuwar shuɗi da mafi faɗin bakan rawaya da aka canza ta hanyar phosphor. Siffar wannan lanƙwasa tana ƙayyadaddun CCT da CRI na LED.

5. Mechanical and Packaging Information

Ƙayyadaddun zahiri suna tabbatar da haɗin kai mai kyau cikin taron ƙarshe.

5.1 Outline Dimensions

An ba da cikakken zanen ma'auni, yana nuna tsayin LED, faɗi, tsayi, da duk wani mahimmin izini. Girman fakitin gama gari sun haɗa da 2835, 5050, 5730, da sauransu, inda lambobin ke wakiltar tsayi da faɗi a cikin kashi goma na milimita (misali, 2.8mm x 3.5mm).

5.2 Pad Layout and Solder Pad Design

An ba shawarar ƙafa ko tsarin ƙasa don PCB an ƙayyade. Wannan ya haɗa da girman, siffa, da tazara na tagulla na tagulla waɗanda za a yi wa LED's tashoshi. Yin bin wannan ƙirar yana da mahimmanci don amintaccen haɗin gwiwa, daidaitaccen watsi na zafi, da kuma daidaita kai yayin sake kwarara.

5.3 Polarity Identification

Hanyar gano anode da cathode an nuna a fili. Ana yin hakan sau da yawa ta hanyar alama akan kunshin (kamar notch, ɗigo, ko sashen kusurwa), tsayin jagorar daban-daban, ko alama akan tef da reel. Daidai polarity yana da mahimmanci don aikin na'urar.

6. Jagororin Siyayya da Haɗawa

6.1 Bayanin Siyayya ta Reflow

An ba da shawarar bayanin yanayin zafi na reflow, yawanci jadawali na zafi da lokaci. Mahimman sigogi sun haɗa da ƙimar hawan preheat, lokacin jiƙa da zafin jiki, kololuwar zafin jiki (wanda bai kamata ya wuce matsakaicin zafin jiki na LED ba, sau da yawa kusan 260°C na 'yan daƙiƙa kaɗan), da ƙimar sanyaya. Bin wannan bayanin yana hana girgizar zafi da lalacewa ga kunshin LED ko ciki die.

6.2 Abubuwan Kula da Gudanarwa

Guidelines include using ESD-safe practices, avoiding mechanical stress on the lens, not cleaning with certain solvents that may damage the silicone or epoxy lens, and ensuring the PCB is clean and flat. Recommendations for storage conditions (typically in a dry, low-humidity environment at moderate temperature) are also given to preserve solderability and performance.

7. Bayanin Marufi da Oda

7.1 Packaging Specifications

The component is supplied on tape and reel for automated assembly. The datasheet specifies the reel dimensions, tape width, pocket spacing, and the quantity of LEDs per reel (e.g., 2000 or 4000 pieces).

7.2 Labeling and Part Numbering

An bayyana tsarin sunan samfurin. Lambar sashi ta yau da kullun tana ɓoye mahimman halaye kamar girman fakitin, launi, rumbun haske, rumbun ƙarfin lantarki, da rumbun CCT. Fahimtar wannan lambar wajibi ce don yin oda daidai. Alamu akan reel ɗin sun haɗa da lambar sashi, adadi, lambar kuri'a, da lambar kwanan wata don bin sawu.

8. Application Recommendations

8.1 Typical Application Circuits

Ana haɗa zane-zane na da'irori na tuƙi na asali. Mafi yawanci shine resistor na jeri tare da tushen ƙarfin lantarki mai tsayi, wanda ya dace da alamomin ƙarfin lantarki kaɗan. Don aikace-aikace masu ƙarfi ko na daidaito, ana ba da shawarar da'irori na tuƙi na yau da kullun ta amfani da ICs na musamman ko transistors don tabbatar da tsayayyen fitowar haske ba tare da la'akari da bambance-bambancen ƙarfin lantarki na gaba ba.

8.2 Abubuwan Tunani na Zane

Muhimman abubuwan tunani sun haɗa da sarrafa zafi (yankin tagulla na PCB, vias, mai yuwuwar heatsink), zanen gani (zaɓin ruwan tabarau, masu watsawa, masu haskakawa), shimfidar lantarki (rage yankin madauki, ingantaccen ƙasa don tuƙi), da jagororin rage ƙima (aiki ƙasa da ƙididdiga mafi girma don ingantaccen aminci).

9. Kwatanta na Fasaha da Bambanci

Ko da sunan abokan hamayya ba a ambata, amfanin fasahar wannan bangaren na iya zama mai haske. Waɗannan na iya haɗawa da mafi girman ingancin haske (lumens a kowace watt), mafi kyawun daidaiton launi saboda ingantaccen binning, mafi girman aikin zafi wanda ke haifar da tsawon rayuwa (L70, L90 ratings), mafi girman aminci da kima na ESD, ko ƙaramin girman fakitin da ke ba da damar ƙirar haske mai yawa. Matsayin rayuwa na "Forever" da kansa ya bambanta sosai ga ayyukan da ke buƙatar samuwa na dogon lokaci.

10. Tambayoyin da ake yawan yi (FAQ)

Q: Me ake nufi da "LifecyclePhase: Revision"?
A: Yana nuna samfurin yana cikin yanayi mai aiki, an sabunta shi. An sake fasalin ƙira (zuwa Revision 4), kuma a halin yanzu ana ƙirƙira da sayar da shi. Ba a daina amfani da shi ba ko kuma yana gab da ƙarewa.

Q: Lokacin da ya ƙare shine "Forever." Shin wannan yana tabbatar da cewa ba za a daina wannan sashi ba?
A: "Forever" a cikin wannan mahallin yana nufin babu ƙayyadaddun ranar dakatarwa da aka saita a lokacin fitar da wannan takarda. Yana nufin niyyar tallafi na dogon lokaci, amma masana'antun suna da 'yancin dakatar da samfuran tare da isassun sanarwa, yawanci ta hanyar Sanarwar Canjin Samfuri (PCN).

Q: Yaya ake fassara ranar saki?
A: Ranar saki (2015-10-16) ita ce lokacin da aka fitar da Revision 4 na wannan takardar bayanan da kuma sigar samfurin da ta dace bisa hukuma. Wannan yana da mahimmanci don sarrafa siga da tabbatar da cewa kana amfani da sabbin ƙayyadaddun bayanai.

Q: Shin zan iya haɗa fitilun LED daga kwandon daban-daban a cikin samfura na?
A: Ba a ba da shawarar ba don aikace-aikacen da daidaiton bayyanar yake da mahimmanci. Haɗa kwandon na iya haifar da bambance-bambance a bayyane a launi ko haske. Don mafi kyawun sakamako, ƙayyade kuma yi amfani da fitilun LED daga kwandon guda ɗaya, mai matsi.

11. Nazarin Lamuran Aikace-aikace na Aiki

Nazarin Aiki na 1: Na'urar Fitilar LED ta Layi don Hasken Ofis
Mai zane yana ƙirƙirar na'urar haske mai rataye ta layi don wuraren ofis. Ta amfani da takardar bayanan, suna zaɓar babban CRI, kwandon CCT na 4000K don jin daɗin gani. Suna ƙididdige adadin fitilun LED da ake buƙata bisa ga maƙasudin lumens kowace na'ura da kwandon ɗigon haske. Ana amfani da bayanan juriya na zafi don ƙirƙira PCB na aluminum tare da isassun ramukan zafi don kiyaye zafin haɗin gwiwa a ƙasa da 85°C, yana tabbatar da cewa an cimma ƙayyadaddun rayuwar L90 na sa'o'i 50,000. An shirya bayanin reflow a cikin layin taron SMT.

Nazarin Aiki na 2: Naúrar Hasken Baya don Nuni na Masana'antu
An engineer is designing a ruggedized display requiring even backlighting. They choose this LED for its stable lifecycle, guaranteeing future repair part availability. They use the forward voltage binning information to design parallel strings with matched Vf to ensure current balance. The mechanical drawing confirms the LED fits within the slim cavity of the display assembly. The soldering guidelines are followed to prevent lens damage during assembly.

12. Gabatarwar Ka'idar Aiki

Light Emitting Diodes (LEDs) are semiconductor devices that emit light when an electric current passes through them. This phenomenon is called electroluminescence. When a forward voltage is applied across the p-n junction of the semiconductor material (commonly based on gallium nitride (GaN) for blue/white LEDs), electrons from the n-type region recombine with holes from the p-type region in the active layer. This recombination releases energy in the form of photons (light). The wavelength (color) of the emitted light is determined by the energy bandgap of the semiconductor material. White light is typically generated by using a blue LED chip coated with a yellow phosphor; some of the blue light is converted to yellow, and the mixture of blue and yellow light is perceived as white. The efficiency of this conversion process and the quality of the materials directly impact the LED's efficacy, color quality, and longevity.

13. Trends da Ci gaban Fasaha

Masana'antar LED tana ci gaba da haɓaka tare da wasu bayyanannun abubuwan da ke faruwa. Ingantacciyar inganci tana ƙaruwa a hankali, tare da samfuran dakin gwaje-gwaje sun wuce lumens 200 a kowace watt kuma manyan LED na kasuwanci galibi suna cimma 150-180 lm/W. Wannan yana haifar da ceton makamashi. Ana mai da hankali sosai kan inganta ingancin launi, tare da babban CRI (90+) da cikakken bakan LED suna zama mafi yaduwa don aikace-aikacen da ke buƙatar ingantaccen haske, kamar tallace-tallace da hasken gidan kayan gargajiya. Ƙananan ƙirar yana ci gaba, tare da fakitin LED na ma'aunin guntu (CSP) suna kawar da fakitin gargajiya don ƙananan siffofi da ingantaccen aikin zafi. Hasken wayo da haɗin kai yana haifar da haɗa na'urorin sarrafawa da na'urori masu auna firikwensin kai tsaye tare da na'urorin LED. Bugu da ƙari, ana ci gaba da bincike kan sabbin kayan kamar perovskites don hasken zamani na gaba da fasahar nuni. Hanyar zuwa ga hasken da ya dace da ɗan adam, wanda ke la'akari da tasirin hasken da ba na gani ba akan yanayin circadian, shima yana rinjayar manufofin rarraba ƙarfin bakan don sabbin samfura.