LTW-206DCG-TMS LED Fari PLCC Datasheet - 3.0x2.8x1.9mm - 3.1V - 120mW - Takardun Fasaha na Hausa

1. Bayanin Samfur Jerin LTW (LiteOn White PLCC LED) yana wakiltar tushen haske mai ƙarancin wutar lantarki kuma mai ƙanƙanta sosai. Ya haɗa tsawon rayuwa da babban aminci da ke cikin LED tare da matakan haske masu gasa da fasahohin haske na al'ada. Wannan samfurin yana ba da sassaucin zane mai mahimmanci da fitar da haske mai yawa, yana ba da damar sabbin dama don fitilar ƙwaƙƙwaran (solid-state lighting) don maye gurbin tushen haske na al'ada a aikace-aikace daban-daban.

1.1 Siffofi Masu Muhimmanci - Tushen LED mai ƙarfi. - Fitowar haske nan take (lokacin amsa bai wuce 100 nanoseconds ba). - Aiki da ƙarancin wutar lantarki DC. - Kunshin mai ƙarancin juriya na zafi (low thermal resistance). - Ya bi ka'idojin RoHS (Ƙuntata Abubuwan Haɗari). - Ya dace da hanyoyin solder reflow marasa gubar.

1.2 Aikace-aikacen Manufa Wannan LED ya dace da fa'ida mai yawa na haskakawa, gami da amma ba'a iyakance ga: - Fitilun karatu na cikin mota, bas, da jiragen sama. - Haskakawa mai sauƙin ɗauka kamar fitilun hannu da fitilun keke. - Fitilun ƙasa da hasken shiriya. - Haskakawa na ado da nishaɗi. - Fitilun bollard, tsaro, da lambu. - Fitilun cove, ƙarƙashin shiryayye, da aiki. - Alamomin zirga-zirga, fitilu masu haske, da fitilun ƙetare layin dogo/gefe. - Haskakawar gine-ginen kasuwanci da na gida na ciki da waje. - Alamomin da aka haskaka gefe (misali, alamun fita, nunin tallace-tallace).

• 2. Ma'auni na Fasaha: Cikakken Bayani na Haƙiƙa 2.1 Matsakaicin Matsakaicin Ƙimar Waɗannan ƙimar suna ayyana iyakokin da za su iya haifar da lalacewa na dindindin ga na'urar. Ba a ba da shawarar aiki a ko fiye da waɗannan iyakokin ba. - Ragewar Wutar Lantarki (Power Dissipation): 120 mW. Wannan shine matsakaicin wutar lantarki da kunshin zai iya fitarwa a matsayin zafi a ƙayyadaddun yanayi. - Matsakaicin Wutar Lantarki ta Gaba (Peak Forward Current): 100 mA (a cikin 1/10 duty cycle, 0.1ms faɗin bugun jini). Don gajerun bugun jini, LED na iya ɗaukar wutar lantarki mafi girma fiye da ƙimar ci gaba. - Wutar Lantarki ta Gaba ta DC (DC Forward Current): 30 mA. Matsakaicin wutar lantarki ta gaba ta ci gaba da aka ba da shawarar don aiki mai dogon lokaci mai aminci. - Ƙarfin Wutar Lantarki ta Baya (Reverse Voltage): 5 V. Wuce wannan ƙarfin wutar lantarki a cikin bias na baya zai iya haifar da gazawa nan take. - Kewayon Yanayin Zafin Aiki (Operating Temperature Range): -30°C zuwa +85°C. Kewayon yanayin yanayi don aikin na'urar na al'ada. - Kewayon Yanayin Zafin Ajiya (Storage Temperature Range): -40°C zuwa +100°C. - Yanayin Solder Reflow (Reflow Soldering Condition): Yana jure zafin kololuwar 260°C na dakika 10, yana dacewa da daidaitattun bayanan reflow marasa gubar (misali, bisa J-STD-020D). - Bayani Mai Muhimmanci: Yin aiki da LED a ƙarƙashin yanayin bias na baya a cikin da'irar aikace-aikace na iya haifar da lalacewar kayan aiki ko gazawa. Zanen da'ira mai kyau don hana ƙarfin wutar lantarki na baya yana da mahimmanci.
• 2.2 Halayen Lantarki da Haske An auna a Ta=25°C tare da IF = 20 mA, sai dai idan an faɗi. Waɗannan su ne ma'auni na aiki na yau da kullun. - Ƙarfin Haske (Luminous Flux, Φv): Ƙimar yau da kullun ita ce 9.00 lm, tare da mafi ƙarancin 6.75 lm. Wannan yana ƙididdige jimillar fitowar haske da ake iya gani. - Ƙarfin Haske a Wani Shugabanci (Luminous Intensity): Ƙimar yau da kullun ita ce 3100 mcd (millicandela), tare da mafi ƙarancin 2200 mcd. Wannan yana auna ƙarfin haske a kowane kusurwa mai ƙarfi, mai alaƙa da haske mai shugabanci. - Kusurwar Dubawa (Viewing Angle, 2θ1/2): Digiri 120. Wannan shine cikakken kusurwar da ƙarfin haske ya rabi na ƙimar kololuwa (a 0°). - Ma'auni na Launi (Chromaticity Coordinates, CIE 1931): Ƙimar yau da kullun sune x=0.282, y=0.265. Wannan yana ayyana launin farin baki akan zanen ma'auni na launi. Yakamata a yi amfani da juzu'i na ±0.01 ga waɗannan ma'auni. - Ƙarfin Wutar Lantarki ta Gaba (Forward Voltage, VF): Yau da kullun 3.1 V, tare da matsakaicin 3.1 V da mafi ƙarancin 2.7 V a 20 mA. - Bayanan Aunawa: Ana auna ƙarfin haske ta amfani da haɗin firikwensin / tacewa wanda ya kusanci lakatun amsa ido na CIE photopic. Ma'aunin gwaji don ma'auni na launi da ƙarfin haske shine CAS140B. Yakamata a yi taka tsantsan na ESD (Fitowar Wutar Lantarki ta Electrostatic) yayin gudanarwa don hana lalacewa.
• 3. Bayanin Tsarin Rarraba (Binning) An rarraba LED zuwa rukunoni don tabbatar da daidaito a cikin ma'auni masu mahimmanci. Wannan yana ba masu zane damar zaɓar sassa waɗanda suka dace da takamaiman buƙatunsu na ƙarfin wutar lantarki, ƙarfin haske, da launi. 3.1 Rarraba Ƙarfin Wutar Lantarki ta Gaba (VF) Ana rarraba LED bisa ƙarfin wutar lantarki ta gaba a IF = 20 mA. Rarraba yana tabbatar da buƙatun direba da ake iya hasasawa. - V0: 2.7V - 2.8V - V1: 2.8V - 2.9V - V2: 2.9V - 3.0V - V3: 3.0V - 3.1V Juzu'i akan kowane rukunin VF shine ±0.05 V. 3.2 Rarraba Ƙarfin Haske (Luminous Flux) da Ƙarfi (Intensity) Ana rarraba LED don ƙarfin haske (lm) da ƙarfin haske mai alaƙa (mcd) a IF = 20 mA. An ba da ƙimar ƙarfi don tunani. Rukunoni suna kewayo daga (6.75-7.00 lm / 2200-2300 mcd) zuwa (8.75-9.00 lm / 3000-3100 mcd). Juzu'i akan kowane rukunin ƙarfin haske da ƙarfin haske shine ±10%. 3.3 Rarraba Launi (Chromaticity) An sarrafa launin farin haske sosai ta hanyar rarraba ma'auni na launi akan zanen CIE 1931. Matsayi da yawa (misali, Z1, Z2, A1, A2, B1, B2, C1, C2, da sauransu, tare da bambance-bambance) suna ayyana takamaiman murabba'ai akan jirgin saman ma'auni x,y. Wannan yana tabbatar da daidaiton launi a cikin guntu. Juzu'i ga kowane rukunin launi (x, y) shine ±0.01.
• 4. Bincike akan Lakatunan Aiki Takardun bayanan yana nuni zuwa lakatunan halaye na yau da kullun (wataƙila ana samun su akan shafi na 6/13). Duk da yake ba a sake fitar da takamaiman zane-zane a cikin rubutun ba, ana iya ƙididdige yanayin aikin LED na yau da kullun: - Lakatun I-V (Wutar Lantarki-Ƙarfin Wutar Lantarki): Zai nuna alaƙar ma'auni tsakanin wutar lantarki ta gaba da ƙarfin wutar lantarki ta gaba, mai mahimmanci ga zanen direba. - Ƙarfin Haske vs. Wutar Lantarki ta Gaba: Zai kwatanta yadda fitowar haske ke ƙaruwa tare da wutar lantarki, yawanci a cikin alaƙar kusa da layi a cikin kewayon aiki kafin raguwar inganci. - Ƙarfin Haske vs. Yanayin Zafin Muhalli: Zai nuna raguwar fitowar haske yayin da zafin haɗin gwiwa ya tashi, yana nuna mahimmancin sarrafa zafi. - Ƙarfin Haske na Dangantaka vs. Kusurwar Dubawa: Zai tsara tsarin radiyo na sarari, yana tabbatar da kusurwar dubawa na digiri 120. - Rarraba Ƙarfin Wutar Lantarki na Spectrum: Ga LED fari (mai yuwuwa an canza shi zuwa phosphor), wannan zai nuna babban kololuwar fitarwa a yankin shuɗi (daga mutuwa) da mafi faɗin fitarwa na phosphor rawaya, haɗuwa don samar da farin haske.
• 5. Bayanin Injiniya da Kunshin 5.1 Girman Bayyananne LTW-206DCG-TMS kunshin PLCC (Plastic Leaded Chip Carrier) ne. Ma'auni masu mahimmanci (duk a cikin mm, juzu'i ±0.1 mm sai dai idan an lura) sun haɗa da: - Tsawon kunshin gabaɗaya: 3.0 mm - Faɗin kunshin gabaɗaya: 2.8 mm - Tsayin kunshin gabaɗaya: 1.9 mm - Tazarar jagora da girman bisa cikakken zane. 5.2 Gidan PCB da Aka Ba da Shawara An ba da zanen tsarin ƙasa don solder reflow na infrared ko tururi. Wannan yana tabbatar da samuwar haɗin solder mai kyau, canja wurin zafi, da kwanciyar hankali na injiniya. Zanen yawanci ya haɗa da zanen taimakon zafi don sarrafa zafi yayin solder da aiki. 5.3 Gano Polarity Kunshin ya haɗa da mai nuna polarity (yawanci notch ko kusurwa mai siffa akan ruwan tabarau ko jiki) don gano jagora na cathode (-). Daidaitaccen shugabanci yana da mahimmanci ga aikin da'ira.
• 6. Jagororin Solder da Haɗawa 6.1 Ma'auni na Solder Reflow An ƙididdige kayan aikin don solder reflow marasa gubar tare da zafin kololuwar 260°C na dakika 10. Ana ba da shawarar bin daidaitaccen bayanan reflow wanda ya bi J-STD-020D. Matakan dumama kafin aiki suna da mahimmanci don rage girgizar zafi. 6.2 Tsaftacewa Kada a yi amfani da masu tsaftacewa na sinadarai waɗanda ba a bayyana su ba saboda suna iya lalata kunshin filastik. Idan tsaftacewa ya zama dole bayan solder, nutsar da cikin barasa na ethyl ko isopropyl a yanayin zafi na al'ada na ƙasa da minti ɗaya yana yarda. 6.3 Ajiya da Gudanarwa - Hatsarin Danshi (Moisture Sensitivity): An rarraba wannan samfurin a matsayin Matakin Hatsarin Danshi (MSL) 3 bisa JEDEC J-STD-020. Ana buƙatar taka tsantsan don hana fashewar popcorn yayin reflow. - Kunshin da aka Rufe (Sealed Package): Lokacin da aka adana shi a cikin jakar sa ta hana danshi ta asali tare da busassun abu, yakamata a ajiye shi a ≤30°C da ≤90% RH. Tsawon rayuwar shiryayye shekara ɗaya ne daga ranar rufe jakar. - Bayan Buɗe Jaka (After Bag Opening): Da zarar an buɗe, yakamata a yi amfani da abubuwan aiki a cikin takamaiman tsawon rayuwar bene (ba a bayyana a sarari amma an nuna shi don MSL3) ko a sake gasa su bisa jagororin. Ajiya yakamata ta kasance a ≤30°C da ƙarancin zafi. - Kariya daga ESD (ESD Protection): LED yana da hankali ga fitar da wutar lantarki ta electrostatic. Gudanarwa dole ne ya haɗa da matakan hana tashin hankali (belun wuyan hannu, tashoshin aiki masu tushe, kumfa mai ɗaukar wutar lantarki).

7. Bayanin Kunshin da Oda 7.1 Kunshin Kaset da Reel Ana ba da LED akan kaset mai ɗaukar kaya da reel don haɗawa ta atomatik. - Girman Kaset (Tape Dimensions): An ba da cikakkun ma'auni don tazarar aljihu, faɗi, da daidaitawar ramin sprocket. - Girman Reel (Reel Dimensions): An ba da ƙayyadaddun bayanai don daidaitattun reel na inci 7. - Adadin Kunshin (Packing Quantity): Matsakaicin guda 2000 a kowane reel na inci 7. Mafi ƙarancin adadin kunshin don ragowar kuri'u shine guda 500. - Inganci (Quality): Matsakaicin adadin abubuwan da ba a samu a jere a cikin kaset shine biyu. Kunshin ya bi ƙayyadaddun EIA-481-1-B.

8. Abubuwan da Ake La'akari da Zane na Aikace-aikace 8.1 Gudanar da Zafi Ko da yake kunshin yana da ƙarancin juriya na zafi, dole ne a sarrafa ragewar wutar lantarki na 120 mW. PCB da aka ƙera da kyau tare da isasshen yanki na jan ƙarfe (ta amfani da gidan da aka ba da shawarar a matsayin mai sanyaya zafi) yana da mahimmanci don kiyaye ƙarancin zafin haɗin gwiwa (Tj). Babban Tj yana rage fitowar haske (rage ƙimar lumen), yana canza launi, kuma yana rage tsawon rayuwa. 8.2 Gudanar da Wutar Lantarki (Current Driving) Yi amfani da direba na wutar lantarki mai tsayi, ba tushen ƙarfin wutar lantarki mai tsayi ba, don fitowar haske mai kwanciyar hankali da abin iya hasasawa. Yakamata a ƙera direba don yin aiki a cikin Matsakaicin Matsakaicin Ƙimar (matsakaicin 30 mA DC). Yi la'akari da rage wutar lantarki don aikace-aikacen yanayin zafi mai girma don inganta aminci. 8.3 Zane na Haske (Optical Design) Kusurwar dubawa na digiri 120 ta dace da haskakawa mai faɗi. Don ƙarin haskoki da aka mayar da hankali, za a buƙaci na'urorin haske na biyu (ruwan tabarau, masu nuni). Girman tushen ƙanƙanta yana sa ya dace da tsarin haske daban-daban.

• 9. Kwatancen Fasaha da Bambance-bambance Duk da yake ba a cikin takardun bayanan kwatancen kai tsaye tare da wasu samfuran ba, ana iya ƙididdige manyan bambance-bambancen wannan LED PLCC: - Babban Ƙarfin Haske (High Luminous Intensity): A 3100 mcd na yau da kullun, yana ba da babban haske mai shugabanci don girman kunshinsa. - Faɗin Kusurwar Dubawa (Wide Viewing Angle): Kusurwar digiri 120 tana ba da haskakawa mai faɗi, daidai gwargwado idan aka kwatanta da LED masu kusurwa mai ƙunƙuntacciyar hanya. - Dacewar Reflow (Reflow Compatibility): Dacewar solder reflow marasa gubar yana ba da damar haɗawa mai tsada, mai yawa na SMT (Fasahar Haɗawa ta Surface Mount). - Cikakken Rarraba (Comprehensive Binning): Matsanancin rarraba akan ƙarfin wutar lantarki, ƙarfin haske, da launi yana ba da damar takamaiman da kuma daidaitaccen aiki a cikin samfuran ƙarshe.
• 10. Tambayoyin da Ake Yawan Yi (Dangane da Ma'auni na Fasaha) 10.1 Menene bambanci tsakanin Ƙarfin Haske (lm) da Ƙarfin Haske a Wani Shugabanci (mcd)? Ƙarfin Haske yana auna jimillar adadin haske da ake iya gani da aka fitar a kowane shugabanci (an haɗa shi akan siffa). Ƙarfin Haske a Wani Shugabanci yana auna yadda haske ya bayyana a takamaiman shugabanci. Wannan LED yana da babban ƙarfi (mcd) saboda zanen kunshinsa, ko da yake jimillar ƙarfinsa (lm) yana da matsakaici. Hasken digiri 120 yana yada wannan ƙarfin a kan yanki mai faɗi. 10.2 Shin Zan iya Gudanar da wannan LED a 30 mA a ci gaba? Ee, 30 mA shine matsakaicin wutar lantarki ta gaba ta DC da aka ba da shawarar. Duk da haka, don mafi kyawun tsawon rayuwa da kuma la'akari da yanayin zafi na ainihi, yawanci ana ba da shawarar tuƙi a ƙarancin wutar lantarki (misali, 20 mA, kamar yadda aka yi amfani da shi don gwaji). Koyaushe tabbatar da cewa zafin haɗin gwiwa ya kasance cikin iyakoki masu aminci ta hanyar sanyaya zafi mai kyau. 10.3 Ta yaya zan fassara rukunin Ma'auni na Launi (Chromaticity Coordinate bins)? Rukunoni (Z1, A1, B1, da sauransu) suna ayyana ƙananan yankuna akan zanen sararin launi na CIE 1931. Zaɓin LED daga rukunin ɗaya yana tabbatar da ƙaramin bambancin launi a aikace-aikacenku. Teburin da aka bayar yana ba da iyakokin ma'auni na x,y ga kowane rukunin. Yawanci za ku ƙayyade lambar rukunin da ake so lokacin yin oda. 10.4 Shin resistor mai iyakance wutar lantarki ya isa ya gudanar da wannan LED? Don sauƙaƙan aikace-aikace marasa mahimmanci tare da samar da ƙarfin wutar lantarki DC mai kwanciyar hankali, ana iya amfani da resistor na jerin don saita wutar lantarki. Duk da haka, saboda bambancin VF (rarraba daga 2.7V zuwa 3.1V), wutar lantarki kuma don haka haske zai bambanta tsakanin LED. Don daidaitaccen aiki, musamman tare da LED da yawa ko daga tushen ƙarfin wutar lantarki mai canzawa (kamar baturi), ana ba da shawarar sosai da'irar direba ta LED mai wutar lantarki mai tsayi.
• 11. Misalan Amfani na Aiki 11.1 Fitilar Aiki Mai Sauƙin ɗauka - Yanayi (Scenario): Zana fitilar aiki mai ƙanƙanta, mai amfani da baturi. - Aiwatarwa (Implementation): An shirya LED guda huɗu na LTW-206DCG-TMS akan ƙaramin PCB. Ana gudanar da su a cikin tsari na 2-series, 2-parallel ta mai canza ƙarfi / direba mai wutar lantarki mai tsayi daga baturin Li-ion guda ɗaya na 3.7V. An saita direba zuwa ~18 mA kowace LED don tsawaita rayuwar baturi yayin ba da haske mai yawa. Faɗin hasken digiri 120 yana ba da kyakkyawan ɗaukar yanki akan teburin aiki. Za a zaɓi rukunin VF mai ƙarancin (V0) don haɓaka inganci daga baturi. 11.2 Na'urar Baya ga Alamar da aka haskaka gefe (Edge-Lit Sign) - Yanayi (Scenario): Ƙirƙirar baya mai daidaitawa don alamar fita mai bakin ciki. - Aiwatarwa (Implementation): Ana sanya LED da yawa tare da ɗaya ko fiye gefuna na farantin jagorar haske na acrylic. Babban ƙarfin haske na LED yana ba su damar haɗuwa cikin inganci cikin jagorar haske. Ana amfani da LED daga rukunin launi mai tsauri ɗaya (misali, A2) da rukunin ƙarfin haske (misali, 82) don tabbatar da daidaiton launi da haske a fuskantar alamar. Kunshin SMT yana ba da damar haɗawa mai ƙanƙanta sosai.
• 12. Ka'idar Aiki LED (Light Emitting Diode) na'urar semiconductor ce da ke fitar da haske lokacin da wutar lantarki ta wuce ta cikinta. Wannan al'amari, da ake kira electroluminescence, yana faruwa lokacin da electrons suka sake haɗuwa tare da ramukan electron a cikin na'urar, suna sakin makamashi a cikin nau'in photons. Launin haske yana ƙaddara ta hanyar tazarar band na makamashi na kayan semiconductor. LTW-206DCG-TMS LED fari ne, wanda galibi ana ƙirƙira shi ta amfani da guntu na semiconductor mai fitar da shuɗi wanda aka lulluɓe da phosphor rawaya. Wasu daga cikin hasken shuɗi ana canza su zuwa rawaya ta hanyar phosphor, kuma haɗuwar hasken shuɗi da rawaya idon ɗan adam yana ganin shi azaman fari.
• 13. Trends na Fasaha Masana'antar haskakawa ta ƙwaƙƙwaran (solid-state lighting) tana ci gaba da haɓaka tare da trends da yawa bayyananne: - Ƙara Ingantacciyar Aiki (Increased Efficacy): Ci gaba da ci gaba yana nufin samar da ƙarin lumens a kowace watt (lm/W), rage amfani da wutar lantarki don fitowar haske iri ɗaya. - Ingantacciyar Ingancin Launi (Improved Color Quality): Ci gaba a cikin fasahar phosphor da zane-zane na guntu da yawa yana haifar da ƙimar ƙimar Fitar da Launi (CRI) mafi girma da mafi daidaitattun maki launi. - Ƙananan Girma (Miniaturization): Kunshin yana ci gaba da raguwa yayin kiyayewa ko ƙara fitowar haske, yana ba da damar mafita masu haske masu ƙanƙanta kuma masu hankali. - Haɗin Kai mai Hikima (Smart Integration): Ana ƙara haɗa LED tare da da'irar sarrafawa, firikwensin, da hanyoyin sadarwa don ƙirƙirar tsarin haske mai hankali, mai haɗin kai. - Amincewa & Tsawon Rayuwa (Reliability & Lifetime): An ci gaba da mayar da hankali kan haɓaka amincin dogon lokaci da kula da lumen, tura tsawon rayuwar aiki fiye da haske na al'ada. LTW-206DCG-TMS, a matsayin abu mai ƙarfi, mai iya solder reflow na PLCC, yayi daidai da trends na ƙananan girma da dacewa da hanyoyin kera masu yawa, atomatik.
• Cove, undershelf, and task lighting.
• Traffic signaling, beacons, and rail crossing/wayside lights.
• Indoor and outdoor commercial and residential architectural lighting.
• Edge-lit signs (e.g., exit signs, point-of-sale displays).

. Technical Parameters: In-Depth Objective Interpretation

.1 Absolute Maximum Ratings

These ratings define the limits beyond which permanent damage to the device may occur. Operation at or beyond these limits is not advised.

• Power Dissipation: mW. This is the maximum power the package can dissipate as heat under specified conditions.
• Peak Forward Current: mA (at 1/10 duty cycle, 0.1ms pulse width). For short pulses, the LED can handle higher current than its continuous rating.
• DC Forward Current: mA. The maximum recommended continuous forward current for reliable long-term operation.
• Reverse Voltage: V. Exceeding this voltage in reverse bias can cause immediate failure.
• Operating Temperature Range:-30°C to +85°C. The ambient temperature range for normal device function.
• Storage Temperature Range:-40°C to +100°C.
• Reflow Soldering Condition:Withstands 260°C peak temperature for 10 seconds, compatible with standard lead-free reflow profiles (e.g., per J-STD-020D).

Important Note:Operating the LED under reverse bias conditions in an application circuit may lead to component damage or failure. Proper circuit design to prevent reverse voltage is essential.

.2 Electro-Optical Characteristics

Measured at Ta=25°C with IF = 20 mA, unless otherwise stated. These are the typical performance parameters.

• Luminous Flux (Φv):Typical value is 9.00 lm, with a minimum of 6.75 lm. This quantifies the total visible light output.
• Luminous Intensity:Typical value is 3100 mcd (millicandela), with a minimum of 2200 mcd. This measures luminous flux per solid angle, relevant for directional brightness.
• Viewing Angle (2θ_/2): degrees. This is the full angle at which the luminous intensity is half of the peak intensity (at 0°).
• Chromaticity Coordinates (CIE 1931):Typical values are x=0.282, y=0.265. This defines the white point color on the chromaticity diagram. A tolerance of ±0.01 should be applied to these coordinates.
• Forward Voltage (V_F):Typically 3.1 V, with a maximum of 3.1 V and a minimum of 2.7 V at 20 mA.

Measurement Notes:Luminous flux is measured using a sensor/filter combination approximating the CIE photopic eye-response curve. The test standard for chromaticity coordinates and luminous flux is CAS140B. Proper ESD (Electrostatic Discharge) precautions are mandatory during handling to prevent damage.

. Binning System Explanation

The LED is classified into bins to ensure consistency in key parameters. This allows designers to select parts matching their specific requirements for voltage, flux, and color.

.1 Forward Voltage (V_F) Binning

LEDs are sorted based on their forward voltage at IF = 20 mA. The binning ensures predictable driver requirements.

• V0:.7V - 2.8V
• V1:.8V - 2.9V
• V2:.9V - 3.0V
• V3:.0V - 3.1V

Tolerance on each V_Fbin is ±0.05 V.

.2 Luminous Flux & Intensity Binning

LEDs are binned for both luminous flux (lm) and correlated luminous intensity (mcd) at IF = 20 mA. The intensity value is provided for reference.

• Bins range from64(6.75-7.00 lm / 2200-2300 mcd) to84(8.75-9.00 lm / 3000-3100 mcd).

Tolerance on each luminous intensity and luminous flux bin is ±10%.

.3 Color (Chromaticity) Binning

The white light color is tightly controlled through chromaticity coordinate binning on the CIE 1931 diagram. Multiple ranks (e.g., Z1, Z2, A1, A2, B1, B2, C1, C2, etc., with sub-variants) define specific quadrangles on the x,y coordinate plane. This ensures color consistency within a batch. The tolerance for each hue (x, y) bin is ±0.01.

. Performance Curve Analysis

The datasheet references typical characteristic curves (presumably found on page 6/13). While the specific graphs are not reproduced in the text, standard LED performance trends can be inferred:

• I-V (Current-Voltage) Curve:Would show the exponential relationship between forward current and forward voltage, crucial for driver design.
• Luminous Flux vs. Forward Current:Would illustrate how light output increases with current, typically in a near-linear relationship within the operating range before efficiency droop.
• Luminous Flux vs. Ambient Temperature:Would demonstrate the decrease in light output as the junction temperature rises, highlighting the importance of thermal management.
• Relative Intensity vs. Viewing Angle:Would plot the spatial radiation pattern, confirming the 120-degree viewing angle.
• Spectral Power Distribution:For a white LED (likely phosphor-converted), this would show a broad emission peak in the blue region (from the die) and a broader yellow phosphor emission, combining to produce white light.

. Mechanical & Package Information

.1 Outline Dimensions

The LTW-206DCG-TMS is a PLCC (Plastic Leaded Chip Carrier) package. Key dimensions (all in mm, tolerance ±0.1 mm unless noted) include:

• Overall package length: 3.0 mm
• Overall package width: 2.8 mm
• Overall package height: 1.9 mm
• Lead spacing and size as per the detailed drawing.

.2 Recommended PCB Attachment Pad

A land pattern design is provided for infrared or vapor phase reflow soldering. This ensures proper solder joint formation, thermal transfer, and mechanical stability. The design typically includes thermal relief patterns to manage heat during soldering and operation.

.3 Polarity Identification

The package includes a polarity indicator (typically a notch or a chamfered corner on the lens or body) to identify the cathode (-) lead. Correct orientation is vital for circuit operation.

. Soldering & Assembly Guidelines

.1 Reflow Soldering Parameters

The component is rated for lead-free reflow soldering with a peak temperature of 260°C for 10 seconds. It is recommended to follow a standard reflow profile compliant with J-STD-020D. Preheating stages are critical to minimize thermal shock.

.2 Cleaning

Unspecified chemical cleaners should not be used as they may damage the plastic package. If cleaning is necessary post-soldering, immersion in ethyl alcohol or isopropyl alcohol at normal temperature for less than one minute is acceptable.

.3 Storage & Handling

• Moisture Sensitivity:This product is classified as Moisture Sensitivity Level (MSL) 3 per JEDEC J-STD-020. Precautions are required to prevent popcorn cracking during reflow.
• Sealed Package:When stored in its original moisture-proof bag with desiccant, it should be kept at ≤30°C and ≤90% RH. The shelf life is one year from the bag seal date.
• After Bag Opening:Once opened, components should be used within a specified floor life (not explicitly stated but implied for MSL3) or re-baked according to guidelines. Storage should be at ≤30°C and low humidity.
• ESD Protection:The LED is sensitive to electrostatic discharge. Handling must involve anti-static measures (wrist straps, grounded workstations, conductive foam).

. Packaging & Ordering Information

.1 Tape and Reel Packaging

The LEDs are supplied on embossed carrier tape and reel for automated assembly.

• Tape Dimensions:Detailed dimensions for pocket pitch, width, and sprocket hole alignment are provided.
• Reel Dimensions:Specifications for standard 7-inch reels are given.
• Packing Quantity:A maximum of 2000 pieces per 7-inch reel. The minimum packing quantity for remainder lots is 500 pieces.
• Quality:The maximum number of consecutive missing components in the tape is two. Packaging complies with EIA-481-1-B specifications.

. Application Design Considerations

.1 Thermal Management

Although the package has low thermal resistance, the 120 mW power dissipation must be managed. A properly designed PCB with adequate copper area (using the recommended pad as a heatsink) is necessary to maintain a low junction temperature (Tj). High Tj reduces light output (lumen depreciation), shifts color, and shortens lifetime.

.2 Current Driving

Use a constant current driver, not a constant voltage source, for stable and predictable light output. The driver should be designed to operate within the Absolute Maximum Ratings (max 30 mA DC). Consider derating the current for high ambient temperature applications to improve reliability.

.3 Optical Design

The 120-degree viewing angle is suitable for wide-area illumination. For more focused beams, secondary optics (lenses, reflectors) will be required. The small source size makes it compatible with various optical systems.

. Technical Comparison & Differentiation

While a direct side-by-side comparison with other products is not in the datasheet, key differentiators of this PLCC LED can be inferred:

• High Luminous Intensity:At 3100 mcd typical, it offers high directional brightness for its package size.
• Wide Viewing Angle:The 120-degree angle provides broad, even illumination compared to narrower-angle LEDs.
• Reflow Compatibility:Lead-free reflow soldering compatibility enables cost-effective, high-volume SMT (Surface Mount Technology) assembly.
• Comprehensive Binning:Tight binning on voltage, flux, and color allows for precise and consistent performance in end products.

. Frequently Asked Questions (Based on Technical Parameters)

.1 What is the difference between Luminous Flux (lm) and Luminous Intensity (mcd)?

Luminous Flux measures the total amount of visible light emitted in all directions (integrated over a sphere). Luminous Intensity measures how bright the light appears in a specific direction. This LED has high intensity (mcd) due to its package design, even though its total flux (lm) is moderate. The 120-degree beam spreads this intensity over a wide area.

.2 Can I drive this LED at 30 mA continuously?

Yes, 30 mA is the maximum recommended DC forward current. However, for optimal lifetime and to account for real-world thermal conditions, driving at a lower current (e.g., 20 mA, as used for testing) is often advisable. Always ensure the junction temperature remains within safe limits through proper heatsinking.

.3 How do I interpret the Chromaticity Coordinate bins?

The bins (Z1, A1, B1, etc.) define small regions on the CIE 1931 color space diagram. Selecting LEDs from the same bin ensures minimal color variation in your application. The provided table gives the x,y coordinate boundaries for each bin. You would typically specify the desired bin code when ordering.

.4 Is a current-limiting resistor sufficient to drive this LED?

For simple, non-critical applications with a stable DC voltage supply, a series resistor can be used to set the current. However, due to the V_Fvariation (binning from 2.7V to 3.1V), the current and thus brightness will vary between LEDs. For consistent performance, especially with multiple LEDs or from a variable voltage source (like a battery), a dedicated constant-current LED driver circuit is strongly recommended.

. Practical Use Case Examples

.1 Portable Task Light

Scenario:Designing a compact, battery-powered work light.

Implementation:Four LTW-206DCG-TMS LEDs are arranged on a small PCB. They are driven in a 2-series, 2-parallel configuration by a boost converter/constant current driver from a single 3.7V Li-ion battery. The driver is set to ~18 mA per LED to extend battery life while providing ample light. The wide 120-degree beam offers good area coverage on a workbench. The low V_Fbin (V0) would be selected to maximize efficiency from the battery.

.2 Backlight Unit for an Edge-Lit Sign

Scenario:Creating an even backlight for a thin exit sign.

Implementation:Multiple LEDs are placed along one or more edges of an acrylic light guide plate. The high luminous intensity of the LEDs allows them to couple efficiently into the light guide. LEDs from the same tight color bin (e.g., A2) and flux bin (e.g., 82) are used to ensure uniform color and brightness across the sign face. The SMT package allows for a very low-profile assembly.

. Operating Principle

A Light Emitting Diode (LED) is a semiconductor device that emits light when an electric current passes through it. This phenomenon, called electroluminescence, occurs when electrons recombine with electron holes within the device, releasing energy in the form of photons. The color of the light is determined by the energy band gap of the semiconductor material. The LTW-206DCG-TMS is a white LED, which is typically created by using a blue-emitting semiconductor chip coated with a yellow phosphor. Some of the blue light is converted to yellow by the phosphor, and the mixture of blue and yellow light is perceived as white by the human eye.

. Technology Trends

The solid-state lighting industry continues to evolve with several clear trends:

• Increased Efficacy:Ongoing development aims to produce more lumens per watt (lm/W), reducing energy consumption for the same light output.
• Improved Color Quality:Advancements in phosphor technology and multi-chip designs lead to higher Color Rendering Index (CRI) values and more consistent color points.
• Miniaturization:Packages continue to shrink while maintaining or increasing light output, enabling ever-smaller and more discreet lighting solutions.
• Smart Integration:LEDs are increasingly combined with control circuitry, sensors, and communication interfaces to create intelligent, connected lighting systems.
• Reliability & Lifetime:Focus remains on enhancing long-term reliability and lumen maintenance, pushing operational lifetimes further beyond traditional lighting.

The LTW-206DCG-TMS, as a high-intensity, reflow-solderable PLCC component, aligns with the trends of miniaturization and compatibility with automated, high-volume manufacturing processes.