1. Bayanin Samfur
T7C series yana wakiltar babban aikin LED fari mai kallon sama, wanda aka tsara don aikace-aikacen haske na gabaɗaya masu buƙatu. Wannan na'urar tana amfani da ƙirar fakitin da aka inganta don zafi don sauƙaƙe zubar da zafi, wanda ke da mahimmanci don kiyaye aiki da tsawon rayuwa. Ƙaramin ƙafar 7070 (7.0mm x 7.0mm) yana ɗauke da ƙirar LED mai fitarwa mai ƙarfi wanda ke iya aiki a manyan igiyoyin tuƙi. Babban fa'idodinsa sun haɗa da fitar da haske mai yawa, ƙarfin sarrafa halin yanzu, da faɗin kusurwar kallo, wanda ya sa ya dace da ayyukan haske iri-iri. An yi nufin samfurin don hasken gine-gine da na ado, mafita na sake gyara, haske na gabaɗaya, da hasken baya na alamar ciki/waje. Ya bi ka'idojin RoHS kuma ya dace da hanyoyin siyar da guduro marasa gubar.
2. Bincike Mai zurfi na Ma'auni na Fasaha
2.1 Halayen Lantarki da Na Gani
Babban aikin LED an ayyana shi a zafin haɗin gwiwa (Tj) na 25°C da halin yanzu na gaba (IF) na 180mA. Fitar da haske yana bambanta sosai tare da Matsakaicin Zafin Launi (CCT) da Ma'aunin Fitar Launi (CRI). Misali, LED 6500K tare da CRI na 70 (Ra70) yana ba da haske na yau da kullun na lumens 1430, tare da mafi ƙarancin ƙimar da aka tabbatar na lumens 1300. Yayin da CRI ya karu zuwa 90 (Ra90), fitarwa na yau da kullun yana raguwa zuwa lumens 1160, tare da mafi ƙarancin lumens 1000, yana nuna ciniki tsakanin ingancin launi da fitar haske. Duk ma'aunin haske yana da jurewar ±7%, yayin da ma'aunin CRI yana da jurewar ±2.
2.2 Ma'auni na Lantarki da Zafi
Matsakaicin ƙimar ƙididdiga ya kafa iyakokin aiki. Matsakaicin ci gaba na halin yanzu na gaba (IF) shine 200mA, tare da halin yanzu na gaba na bugun jini (IFP) na 300mA da aka yarda a ƙarƙashin takamaiman sharuɗɗa (faɗin bugun jini ≤100μs, zagayowar aiki ≤1/10). Matsakaicin zubar da wutar lantarki (PD) shine 10.4W. Na'urar na iya aiki a cikin yanayin zafin yanayi daga -40°C zuwa +105°C. Matsakaicin ƙarfin wuta na gaba (VF) a 180mA shine 49V, tare da kewayon daga 46V zuwa 52V (±3% jurewa). Ma'auni mai mahimmanci na zafi shine juriya na zafi daga haɗin gwiwa zuwa wurin siyar da guduro (Rth j-sp), wanda yawanci shine 1.5°C/W. Wannan ƙaramin ƙimar yana nuna ingantaccen ƙirar sarrafa zafin fakitin, wanda ke da mahimmanci don kiyaye ƙananan zafin haɗin gwiwa a manyan igiyoyin tuƙi.
3. Bayanin Tsarin Binning
3.1 Binning na Haske
Ana rarraba LED ɗin zuwa kwandon haske bisa ga ma'aunin fitarwa a 180mA. Kowane haɗin CCT/CRI yana da takamaiman saitin lambobin kwandon. Misali, LED 4000K tare da Ra70 ana iya samun su a cikin kwandon 3D (1300-1400 lm), 3E (1400-1500 lm), 3F (1500-1600 lm), da 3G (1600-1700 lm). Wannan binning yana ba masu ƙira damar zaɓar abubuwan da ke da haske mai daidaito don aikace-aikacen haske iri ɗaya.
3.2 Binning na Ƙarfin Wuta na Gaba
Don taimakawa wajen ƙirar da'ira don tuƙi mai daidaito, ana kuma rarraba LED ta ƙarfin wuta na gaba. Kwandon su ne 6R (46-48V), 6S (48-50V), da 6T (50-52V). Zaɓin LED daga kwandon ƙarfin wuta ɗaya na iya taimakawa tabbatar da rarraba halin yanzu iri ɗaya a cikin tsarin layi daya.
3.3 Binning na Launi
Ana sarrafa daidaiton launi ta amfani da tsarin ellipse na MacAdam mataki 5, wanda ke haɗa LED tare da madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin madaidaicin 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. Performance Curve Analysis
The datasheet includes several graphical representations of performance. The Relative Luminous Flux vs. Forward Current curve (Fig. 5) shows how light output increases with current, typically in a sub-linear fashion at higher currents due to efficiency droop. The Forward Voltage vs. Forward Current curve (Fig. 6) depicts the diode's IV characteristic. The Relative Luminous Flux vs. Solder Point Temperature curve (Fig. 7) and Forward Voltage vs. Solder Point Temperature curve (Fig. 8) are critical for understanding thermal derating; light output decreases and forward voltage slightly decreases as temperature rises. The CIE x, y coordinate shift with temperature (Fig. 9) shows how the perceived color may change. Finally, the Maximum Forward Current vs. Ambient Temperature curve (Fig. 10) provides guidance for derating the drive current in high-temperature environments to prevent overheating.
. Mechanical and Package Information
The LED package has dimensions of 7.0mm in length and width, with a height of approximately 2.8mm. A detailed dimensioned drawing shows the top view, side view, and solder pad layout. The cathode and anode are clearly marked. The recommended solder pad pattern is provided to ensure reliable mechanical and thermal connection to the printed circuit board (PCB). The package is designed to be mounted on a Metal Core PCB (MCPCB) for optimal heat sinking. The tolerance for unspecified dimensions is ±0.1mm.
. Soldering and Assembly Guidelines
The device is rated for lead-free reflow soldering. The maximum soldering temperature is specified as 230°C or 260°C for a duration of 10 seconds. It is crucial to follow the recommended reflow profile to avoid thermal shock and damage to the LED package or the internal die attach. Care must be taken during handling to avoid electrostatic discharge (ESD), as the device has an ESD withstand rating of 1000V (Human Body Model). The storage temperature range is -40°C to +85°C.
. Packaging and Ordering Information
The part numbering system is detailed and follows the format: T [X1][X2][X3][X4][X5][X6]-[X7][X8][X9][X10]. Key elements include: X1 (Type code, '7C' for 7070), X2 (CCT code, e.g., '27' for 2700K), X3 (CRI code, '7' for Ra70, '8' for Ra80, '9' for Ra90), X4 (Number of serial chips), X5 (Number of parallel chips), and X6 (Component code). This flexible system allows for precise identification of the LED's electrical and optical characteristics.
. Application Recommendations
.1 Typical Application Scenarios
Due to its high flux output and power handling, this LED is ideal for applications requiring high brightness in a compact source. This includes downlights, high-bay lighting, street lighting modules, and architectural facade lighting. Its wide viewing angle (120° half-intensity angle) makes it suitable for area lighting where broad illumination is needed.
.2 Design Considerations
Thermal Management: The low thermal resistance (1.5°C/W) is only effective if the LED is properly heatsinked. Designers must use an appropriate MCPCB and possibly an external heatsink to keep the solder point temperature within safe limits, especially when driving at or near the maximum current. Refer to Fig. 10 for current derating.
Electrical Drive: A constant current driver is mandatory for reliable operation. The high forward voltage (~49V) means drivers must be selected accordingly. For designs using multiple LEDs in series, the total voltage requirement can be significant.
Optical Design: Secondary optics (lenses, reflectors) may be required to achieve the desired beam pattern. The wide viewing angle is a starting point for optical system design.
. Technical Comparison and Differentiation
Compared to smaller packages like 5050 or 3030 LEDs, the 7070 format offers significantly higher total light output and power dissipation capability in a single package, simplifying optical design and reducing the part count in some applications. The specified thermal resistance is competitive, indicating a package designed for high-power operation without excessive temperature rise. The comprehensive binning for flux, voltage, and chromaticity provides a level of consistency that is essential for professional lighting products, differentiating it from components with looser tolerances.
. Frequently Asked Questions (Based on Technical Parameters)
Q: What is the actual power consumption of this LED?
A: At the typical operating point of 180mA and 49V, the electrical power input is approximately 8.82 Watts (0.18A * 49V).
Q: How does light output change with temperature?
A: As shown in Fig. 7, relative luminous flux decreases as the solder point temperature increases. Proper heatsinking is critical to maintain output.
Q: Can I drive this LED at 200mA continuously?
A: While 200mA is the absolute maximum rating, continuous operation at this current requires excellent thermal management to keep the junction temperature below 120°C. Derating per Fig. 10 is recommended for reliable long-term operation.
Q: What driver voltage do I need for 3 LEDs in series?
A: Assuming typical Vf of 49V per LED, the driver should provide at least 147V, plus some headroom for regulation.
. Practical Design and Usage Cases
Case 1: High-Bay Industrial Light: A fixture uses 4 of these LEDs on a single large MCPCB attached to an extruded aluminum heatsink. Driven at 150mA each by a constant current driver, they provide high-efficiency, high-CRI illumination for a warehouse. The tight chromaticity binning ensures uniform white light across the fixture.
Case 2: Modular Street Light: A street light module is constructed with 12 LEDs arranged in a circular pattern. Each LED is paired with a individual secondary optic to create a specific street-lighting distribution pattern (e.g., Type II or Type III). The high lumen output per LED reduces the number of components needed.
. Operating Principle Introduction
This is a phosphor-converted white LED. The core is a semiconductor chip (typically based on indium gallium nitride) that emits blue light when electrical current passes through it in the forward direction. This blue light is partially absorbed by a phosphor coating (cerium-doped yttrium aluminum garnet, or YAG, is common) deposited on or around the chip. The phosphor re-emits this energy as a broad spectrum of yellow light. The combination of the remaining blue light and the converted yellow light appears white to the human eye. The exact ratio of blue to yellow, and the specific phosphor composition, determines the CCT and CRI of the emitted white light.
. Technology Trends
The general trend in high-power LED packaging like the 7070 format is towards ever-higher luminous efficacy (lumens per watt), improved color rendering across all CCTs, and enhanced reliability at higher operating temperatures. There is also a focus on improving the package's ability to handle higher current densities and optical flux densities. Furthermore, standardization of footprints and electrical interfaces continues to simplify design for lighting manufacturers. The move towards more precise and consistent binning, as seen in this datasheet, is a key trend enabling high-quality, uniform lighting solutions.
Kalmomin Ƙayyadaddun LED
Cikakken bayanin kalmomin fasaha na LED
Aikin Hasken Wutar Lantarki
| Kalma | Naúrar/Wakilci | Bayanin Sauri | Me yasa yake da muhimmanci |
|---|---|---|---|
| Ingancin Hasken Wuta | lm/W (lumen kowace watt) | Fitowar haske kowace watt na wutar lantarki, mafi girma yana nufin mafi ingancin kuzari. | Kai tsaye yana ƙayyade matakin ingancin kuzari da farashin wutar lantarki. |
| Gudun Hasken Wuta | lm (lumen) | Jimillar hasken da tushe ke fitarwa, ana kiransa "haske". | Yana ƙayyade ko hasken yana da haske sosai. |
| Kusurwar Dubawa | ° (digiri), misali 120° | Kusurwar da ƙarfin haske ya ragu zuwa rabi, yana ƙayyade faɗin haske. | Yana shafar kewar haskakawa da daidaito. |
| Zafin Launi (CCT) | K (Kelvin), misali 2700K/6500K | Zafi/sanyin haske, ƙananan ƙimomi rawaya/zafi, mafi girma fari/sanyi. | Yana ƙayyade yanayin haskakawa da yanayin da suka dace. |
| CI / Ra | Ba naúrar, 0–100 | Ikon ba da launukan abubuwa daidai, Ra≥80 yana da kyau. | Yana shafar sahihancin launi, ana amfani dashi a wurare masu buƙatu kamar shaguna, gidajen tarihi. |
| SDCM | Matakan ellipse MacAdam, misali "5-mataki" | Ma'aunin daidaiton launi, ƙananan matakai suna nufin mafi daidaiton launi. | Yana tabbatar da daidaiton launi a cikin rukunin LED iri ɗaya. |
| Matsakaicin Tsawon Raɗaɗin Hasken | nm (nanomita), misali 620nm (ja) | Tsawon raɗaɗin haske daidai da launin LED masu launi. | Yana ƙayyade launin ja, rawaya, kore LED masu launi ɗaya. |
| Rarraba Bakan Hasken | Layin tsawon raɗaɗi da ƙarfi | Yana nuna rarraba ƙarfi a cikin tsawon raɗaɗin haske. | Yana shafar ba da launi da ingancin launi. |
Ma'auni na Lantarki
| Kalma | Alamar | Bayanin Sauri | Abubuwan ƙira |
|---|---|---|---|
| Ƙarfin lantarki na gaba | Vf | Mafi ƙarancin ƙarfin lantarki don kunna LED, kamar "maƙallan farawa". | Ƙarfin lantarki na injin dole ya zama ≥Vf, ƙarfin lantarki yana ƙara don LED a jere. |
| Ƙarfin lantarki na gaba | If | Ƙimar ƙarfin lantarki don aikin LED na yau da kullun. | Yawanci tuƙi mai ƙarfi akai-akai, ƙarfin lantarki yana ƙayyade haske da tsawon rai. |
| Matsakaicin Ƙarfin lantarki na bugun jini | Ifp | Matsakaicin ƙarfin lantarki mai jurewa na ɗan lokaci, ana amfani dashi don duhu ko walƙiya. | Fadin bugun jini da sake zagayowar aiki dole ne a sarrafa su sosai don guje wa lalacewa. |
| Ƙarfin lantarki na baya | Vr | Matsakaicin ƙarfin lantarki na baya da LED zai iya jurewa, wanda ya wuce zai iya haifar da rushewa. | Dangane dole ne ya hana haɗin baya ko ƙarfin lantarki. |
| Juriya na zafi | Rth (°C/W) | Juriya ga canja wurin zafi daga guntu zuwa solder, ƙasa yana da kyau. | Babban juriya na zafi yana buƙatar zubar da zafi mai ƙarfi. |
| Rigakafin ESD | V (HBM), misali 1000V | Ikon jurewa zubar da wutar lantarki, mafi girma yana nufin ƙasa mai rauni. | Ana buƙatar matakan hana wutar lantarki a cikin samarwa, musamman ga LED masu hankali. |
Gudanar da Zafi & Amincewa
| Kalma | Ma'aunin maɓalli | Bayanin Sauri | Tasiri |
|---|---|---|---|
| Zazzabin Haɗin gwiwa | Tj (°C) | Ainihin yanayin aiki a cikin guntun LED. | Kowane raguwa 10°C na iya ninka tsawon rai; yayi yawa yana haifar da lalacewar haske, canjin launi. |
| Ragewar Lumen | L70 / L80 (sa'o'i) | Lokacin da haske ya ragu zuwa 70% ko 80% na farko. | Kai tsaye yana ayyana "tsawon sabis" na LED. |
| Kula da Lumen | % (misali 70%) | Kashi na hasken da aka riƙe bayan lokaci. | Yana nuna riƙon haske akan amfani na dogon lokaci. |
| Canjin Launi | Δu′v′ ko ellipse MacAdam | Matsakaicin canjin launi yayin amfani. | Yana shafar daidaiton launi a cikin yanayin haskakawa. |
| Tsufa na Zafi | Lalacewar kayan aiki | Lalacewa saboda yanayin zafi na dogon lokaci. | Zai iya haifar da raguwar haske, canjin launi, ko gazawar buɗe kewaye. |
Tufafi & Kayan Aiki
| Kalma | Nau'ikan gama gari | Bayanin Sauri | Siffofi & Aikace-aikace |
|---|---|---|---|
| Nau'in Kunshin | EMC, PPA, Yumbu | Kayan gida masu kare guntu, samar da hanyar sadarwa ta gani/zafi. | EMC: juriya mai kyau na zafi, farashi mai rahusa; Yumbu: mafi kyawun zubar da zafi, tsawon rai. |
| Tsarin Guntu | Gaba, Guntu Juyawa | Tsarin na'urorin lantarki na guntu. | Juyawar guntu: mafi kyawun zubar da zafi, inganci mafi girma, don ƙarfi mai ƙarfi. |
| Rufin Phosphor | YAG, Silicate, Nitride | Yana rufe guntu shuɗi, yana canza wasu zuwa rawaya/ja, yana haɗa su zuwa fari. | Phosphor daban-daban suna shafar inganci, CCT, da CRI. |
| Ruwan tabarau/Optics | Lefi, Microlens, TIR | Tsarin gani a saman yana sarrafa rarraba haske. | Yana ƙayyade kusurwar dubawa da layin rarraba haske. |
Kula da Inganci & Rarraba
| Kalma | Abun rarraba | Bayanin Sauri | Manufa |
|---|---|---|---|
| Kwalin Gudun Hasken | Lambar misali 2G, 2H | An tattara su ta hanyar haske, kowace ƙungiya tana da ƙananan/matsakaicin ƙimar lumen. | Yana tabbatar da daidaiton haske a cikin jeri ɗaya. |
| Kwalin Ƙarfin lantarki | Lambar misali 6W, 6X | An tattara su ta hanyar kewayon ƙarfin lantarki na gaba. | Yana sauƙaƙe daidaitawar tuƙi, yana inganta ingancin tsarin. |
| Kwalin Launi | Ellipse MacAdam 5-mataki | An tattara su ta hanyar daidaitattun launi, yana tabbatar da ƙuntataccen kewayon. | Yana ba da garantin daidaiton launi, yana guje wa launi mara daidaituwa a cikin kayan aikin. |
| Kwalin CCT | 2700K, 3000K da sauransu | An tattara su ta hanyar CCT, kowanne yana da madaidaicin kewayon daidaitawa. | Yana cika buƙatun CCT na yanayi daban-daban. |
Gwaji & Takaddun Shaida
| Kalma | Matsakaicin/Gwaji | Bayanin Sauri | Muhimmanci |
|---|---|---|---|
| LM-80 | Gwajin kula da lumen | Haskakawa na dogon lokaci a yanayin zafi akai-akai, yana rikodin lalacewar haske. | Ana amfani dashi don kimanta rayuwar LED (tare da TM-21). |
| TM-21 | Matsakaicin kimanta rayuwa | Yana kimanta rayuwa a ƙarƙashin yanayi na ainihi bisa bayanan LM-80. | Yana ba da hasashen kimiyya na rayuwa. |
| IESNA | Ƙungiyar Injiniyoyin Haskakawa | Yana rufe hanyoyin gwajin gani, lantarki, zafi. | Tushen gwaji da masana'antu suka amince. |
| RoHS / REACH | Tabbatarwar muhalli | Yana tabbatar da babu abubuwa masu cutarwa (darma, mercury). | Bukatar shiga kasuwa a duniya. |
| ENERGY STAR / DLC | Tabbatarwar ingancin kuzari | Tabbatarwar ingancin kuzari da aiki don samfuran haskakawa. | Ana amfani dashi a cikin sayayyan gwamnati, shirye-shiryen tallafi, yana haɓaka gasa. |