Bayanin Fasaha na LED Chip LTST-C171TBKT - Girman 1.6x0.8x0.6mm - Ƙarfin Wutar Lantarki 2.8-3.8V - Launi Shudi - Ikon 76mW - Takardun Fasaha na Hausa

1. Bayanin Samfur LTST-C171TBKT wani na'urar haɗaƙƙiyar saman (SMD) ce LED chip wanda aka ƙera don taron lantarki na zamani. Yana cikin dangin abubuwan da ba su da kauri sosai, yana da ƙaramin siffa tare da tsayin kawai 0.80 mm. Wannan ya sa ya dace da aikace-aikace inda ƙuntatawa da ƙaramin bayani suke mahimman abubuwan ƙira. Na'urar tana amfani da kayan semiconductor na InGaN (Indium Gallium Nitride) don samar da hasken shuɗi, an lulluɓe shi a cikin marufi na ruwa mai tsabta. An ƙera shi don dacewa da kayan aikin ɗauka da sanyawa ta atomatik da daidaitattun hanyoyin haɗaƙƙiyar reflow, gami da hanyoyin infrared (IR) da tururi, yana sauƙaƙe samarwa mai yawa.

2. Zurfin Binciken Ma'auni na Fasaha

2.1 Matsakaicin Matsakaicin Ma'auni Iyakar aikin na'urar an ayyana ta a ƙarƙashin yanayin zafi (Ta) na 25°C. Matsakaicin ci gaba na DC na gaba an ƙididdige shi a 20 mA. Don aikin bugun jini, matsakaicin ƙarfin gaba na 100 mA yana yiwuwa a ƙarƙashin zagayowar aiki na 1/10 tare da faɗin bugun jini na 0.1ms. Matsakaicin ƙarfin watsawa shine 76 mW. Ƙarfin juriya na baya shine 5 V, amma an hana ci gaba da aiki a ƙarƙashin baya. Kewayon zafin aiki ya bambanta daga -20°C zuwa +80°C, yayin da kewayon ajiya ya fi faɗi, daga -30°C zuwa +100°C. An ƙididdige na'urar don haɗaƙƙiya a 260°C na tsawon dakika 5 a cikin hanyoyin IR/wave da 215°C na tsawon mintuna 3 a cikin tururi.

2.2 Halayen Lantarki da Na Gani Mahimman ma'auni na aiki ana auna su a Ta=25°C da ƙarfin gaba (IF) na 20 mA. Ƙarfin haske (IV) yana da kewayon al'ada daga mafi ƙanƙanta na 28.0 mcd zuwa matsakaicin 180.0 mcd. Ƙarfin wutar lantarki na gaba (VF) ya bambanta daga 2.80 V zuwa 3.80 V. Na'urar tana fitar da hasken shuɗi tare da matsakaicin tsayin zango mai fitowa (λP) na 468 nm da kewayon tsayin zango mai rinjaye (λd) na 465.0 nm zuwa 475.0 nm. Ramin layin bakan (Δλ) yawanci 25 mm ne, yana nuna tsaftar bakan. Kallon kusurwa (2θ1/2) shine digiri 130, yana ba da filin haske mai faɗi. Ƙarfin baya (IR) shine matsakaicin 10 μA a ƙarfin baya (VR) na 5V.

3. Bayanin Tsarin Binning Ana rarraba samfurin zuwa kwandon shara bisa mahimman ma'auni guda uku don tabbatar da daidaito a cikin ƙirar aikace-aikace.

3.1 Binning na Ƙarfin Wutar Lantarki na Gaba Ana binning ƙarfin wutar lantarki na gaba a cikin matakan 0.2V daga 2.80V zuwa 3.80V. Lambobin bin sune D7 (2.80-3.00V), D8 (3.00-3.20V), D9 (3.20-3.40V), D10 (3.40-3.60V), da D11 (3.60-3.80V). Tolerancin ±0.1V ya shafi kowane bin.

3.2 Binning na Ƙarfin Haske An rarraba ƙarfin haske zuwa kwandon shara huɗu: N (28.0-45.0 mcd), P (45.0-71.0 mcd), Q (71.0-112.0 mcd), da R (112.0-180.0 mcd). Tolerancin ±15% ya shafi kowane bin ƙarfi.

3.3 Binning na Tsawon Zango Mai Rinjaye An ayyana launin shuɗi ta hanyar kwandon shara guda biyu na tsayin zango mai rinjaye: AC (465.0-470.0 nm) da AD (470.0-475.0 nm). Tolerancin kowane bin shine ±1 nm.

4. Binciken Lankwasa Ayyuka Bayanin bayanan yana nuni zuwa lankwasan ayyuka na al'ada waɗanda ke da mahimmanci ga injiniyoyin ƙira. Waɗannan lankwasan suna wakiltar alaƙar da ke tsakanin ƙarfin gaba da ƙarfin haske, tasirin yanayin zafi akan ƙarfin haske, da rarraba ƙarfin bakan na hasken shuɗi da aka fitar. Binciken lankwasa IV yana taimakawa wajen zaɓar madaidaicin resistor mai iyakancewa don cimma haske da ake so yayin kiyaye inganci. Lankwasa rage zafin jiki yana nuna yadda fitarwar haske ke raguwa yayin da yanayin zafi ya tashi sama da 30°C, a cikin adadin da aka ayyana ta hanyar ƙimar ragewa. Lankwasa rarraba bakan yana tabbatar da matsakaicin da tsayin zango mai rinjaye, yana tabbatar da cewa launin da aka fitar ya dace da buƙatun aikace-aikace.

5. Bayanin Injiniya da Marufi

5.1 Girman Marufi LED chip yana bin daidaitattun girman marufi na EIA. An ba da duk mahimman girma a cikin milimita, tare da juzu'i na gabaɗaya na ±0.10 mm sai dai idan an faɗi akasin haka. Bayanin sirri na super-thin na 0.80 mm shine mahimmin fasalin injiniya.

5.2 Gano Polarity & Ƙirar Pad Abun yana da tashoshi na anode da cathode. Bayanin bayanan ya haɗa da shawarar shimfidar pad ɗin haɗaƙƙiya (tsarin ƙasa) don tabbatar da ingantaccen haɗin haɗaƙƙiya da daidaitawar da ta dace yayin reflow. Yin bin wannan sawun yana da mahimmanci ga kwanciyar hankali na injiniya da sarrafa zafi.

5.3 Ƙayyadaddun Kaset da Reel Ana samar da na'urar a cikin kaset na 8mm akan reels masu diamita 7-inch, masu dacewa da kayan aikin taro ta atomatik. Daidaitaccen adadin reel shine guda 3000. Marufi yana bin ƙayyadaddun ANSI/EIA 481-1-A-1994, tare da aljihun abubuwan da ba kowa a rufe su da kaset ɗin murfi na sama.

6. Jagoran Haɗaƙƙiya & Taro

6.1 Bayanan Gudanar da Reflow Solder An ba da cikakkun bayanan gudanar da reflow da aka ba da shawarar don duka tsarin haɗaƙƙiya na al'ada (tin-lead) da na Pb-free. Bayanin Pb-free an daidaita shi musamman don manne SnAgCu. Mahimman ma'auni sun haɗa da zafin jiki na pre-heat da lokaci, lokacin da ya wuce ruwa, matsakaicin zafin jiki (max 260°C), da lokacin a matsakaicin zafin jiki (max dakika 5).

6.2 Ajiya da Kula da Tsararraki Ya kamata a adana LEDs a cikin yanayin da bai wuce 30°C da 70% zafi ba. Abubuwan da aka cire daga jakar shinge na asali na danshi ya kamata a yi musu reflow-soldered a cikin sa'o'i 672 (kwanaki 28). Don ajiya fiye da wannan lokacin, ana ba da shawarar gasa a kusan 60°C na aƙalla awanni 24 kafin taro don hana lalacewar da danshi ya haifar (popcorning) yayin reflow.

6.3 Umarnin Tsaftacewa Idan tsaftacewa ya zama dole bayan haɗaƙƙiya, kawai ya kamata a yi amfani da kaushi da aka ƙayyade. Nitsar LED a cikin barasa na ethyl ko isopropyl alcohol a yanayin zafi na al'ada na ƙasa da minti ɗaya yana yarda. Amfani da sinadarai da ba a bayyana ba na iya lalata kayan marufi.

7. Shawarwarin Aikace-aikace

7.1 Yanayin Aikace-aikace na Al'ada Wannan LED SMD shudi ya dace da hasken baya a cikin kayan lantarki na masu amfani (misali, maɓallan maɓalli, fitilun nuni), alamun matsayi a cikin kayan aikin sadarwa da ofis, da aikace-aikacen hasken ado. Bayaninsa mai sirri ya sa ya dace da na'urori masu sirri kamar wayoyin hannu, kwamfutocin hannu, da nuni mara kauri.

7.2 Ƙirar Da'irar Tuƙi LEDs na'urori ne masu tuƙi na yanzu. Don tabbatar da daidaiton haske lokacin da ake amfani da LED da yawa a layi daya, ana ƙarfafa ba da shawarar yin amfani da takamaiman resistor mai iyakancewa a jere tare da kowane LED. Tuƙi da yawa LEDs a layi daya kai tsaye daga tushen yanzu guda ɗaya (Circuit Model B) ba a ba da shawarar ba, saboda ƙananan bambance-bambance a cikin halayen ƙarfin wutar lantarki na gaba (Vf) na kowane LED na iya haifar da bambance-bambance masu yawa a cikin raba yanzu, saboda haka, rashin daidaiton haske.

7.3 Kariya daga Zubar da Wutar Lantarki (ESD) LED yana da hankali ga zubar da wutar lantarki. Dole ne a aiwatar da matakan sarrafa ESD da suka dace yayin sarrafawa da taro. Waɗannan sun haɗa da amfani da abin wuya na ƙasa ko safofin hannu masu hana tashin hankali, tabbatar da cewa duk tashoshi na aiki da kayan aiki suna da ƙasa da kyau, da kuma kula da yanayin zafi mai sarrafawa a cikin yankin taro.

8. Kwatancen Fasaha & Bambance-bambance Babban fasalin bambance-bambancen wannan ɓangaren shine ƙarancin tsayinsa na 0.80 mm, wanda ke da fa'ida idan aka kwatanta da daidaitattun fakitin LED. Haɗin kai na kallon kusurwa mai faɗi na digiri 130 da ingantaccen tsarin binning don ƙarfi, ƙarfin wutar lantarki, da tsawon zango yana ba masu ƙira ayyuka masu hasashe. Dacewarsa tare da daidaitattun hanyoyin haɗaƙƙiyar IR, tururi, da igiyar ruwa yana ba da sassauci a cikin samarwa ba tare da buƙatar kayan aiki na musamman ba.

9. Tambayoyin da ake yawan yi (FAQs)

Q: Menene bambanci tsakanin tsayin zango mai kololuwa da tsayin zango mai rinjaye? A: Tsawon zango mai kololuwa (λP) shine tsayin zango inda bakan fitowa yana da matsakaicin ƙarfi. Tsawon zango mai rinjaye (λd) an samo shi daga zanen launi na CIE kuma yana wakiltar tsayin zango guda ɗaya wanda ya fi dacewa da launin hasken da aka gane. Don ƙira, tsayin zango mai rinjaye ya fi dacewa don ƙayyadaddun launi.

Q: Shin zan iya tuƙa wannan LED ba tare da resistor na jere ba? A: Ba a ba da shawarar ba. Ƙarfin wutar lantarki na gaba yana da kewayon (2.8-3.8V). Haɗa shi kai tsaye zuwa tushen wutar lantarki kusa da wannan kewayon zai iya haifar da yawan yanzu idan Vf na LED yana a ƙasan ƙasa, yana iya lalata shi. Resistor na jere yana da mahimmanci don saita da iyakance yanzun aiki da aminci.

Q: Ta yaya zafin jiki ke shafar aiki? A: Yayin da yanayin zafi ya karu, ƙarfin haske yawanci yana raguwa. Bayanin bayanan ya ƙayyade ƙimar ragewa don ƙarfin gaba sama da 30°C. Haka kuma, ƙarfin wutar lantarki na gaba yana da ƙimar zafin jiki mara kyau, ma'ana yana raguwa kaɗan yayin da zafin jiki ya tashi.

10. Nazarin Shari'ar Ƙira Yi la'akari da ƙira don na'urar da ke buƙatar alamun matsayi na shuɗi da yawa. Mai zane ya zaɓi LTST-C171TBKT don ƙarancin bayaninsa. Don tabbatar da daidaiton haske a duk alamomi 5, suna ƙayyade LEDs daga bin ƙarfin haske ɗaya (misali, Bin Q) da bin ƙarfin wutar lantarki na gaba (misali, Bin D9). Ana samun tushen wutar lantarki na 5V. Ta amfani da Vf na al'ada na 3.3V (tsakiyar D9) da manufar yanzu na 20 mA, ana ƙididdige ƙimar resistor na jere kamar R = (5V - 3.3V) / 0.020A = 85 Ohms. Za a zaɓi daidaitaccen resistor na 82 Ohm ko 91 Ohm, tare da duba ƙimar wutar lantarki. Tsarin PCB yana amfani da girman pad ɗin da aka ba da shawarar kuma ya haɗa da yankunan kariya na ESD da suka dace a cikin yankin taro.

11. Gabatarwar Ka'idar Aiki Wannan diode ne mai fitar da haske na semiconductor. Lokacin da aka yi amfani da ƙarfin wutar lantarki na gaba a kan anode da cathode, ana shigar da electrons da ramuka zuwa yankin aiki na kayan semiconductor na InGaN. Waɗannan masu ɗaukar caji suna sake haɗuwa, suna sakin makamashi a cikin nau'in photons (haske). Takamaiman bandgap na kayan InGaN yana ƙayyade tsayin zango na photons da aka fitar, wanda a wannan yanayin yana cikin yankin shuɗi na bakan gani. Ruwan ruwa mai tsabta na epoxy yana siffanta fitarwar haske kuma yana ba da kariyar muhalli.

12. Trends na Fasaha Trend a cikin SMD LEDs yana ci gaba zuwa mafi inganci (ƙarin lumens kowace watt), ƙananan girman fakitin, da ingantaccen sarrafa zafin jiki don ba da damar tuƙi mafi girma. Haka nan akwai mayar da hankali kan ƙuntatawa mai ƙarfi don samar da mafi daidaiton launi da haske don aikace-aikace masu ƙarfi kamar hasken baya na nuni. Tuƙin ƙananan ƙira a cikin kayan lantarki na masu amfani yana tura don fakitin da ya fi na 0.80mm da aka nuna a nan sirri.

.3 Cleaning Instructions

If cleaning is necessary after soldering, only specified solvents should be used. Immersing the LED in ethyl alcohol or isopropyl alcohol at normal temperature for less than one minute is acceptable. The use of unspecified chemicals can damage the package material.

. Application Suggestions

.1 Typical Application Scenarios

This blue SMD LED is suitable for backlighting in consumer electronics (e.g., keypads, indicator lights), status indicators in communication and office equipment, and decorative lighting applications. Its thin profile makes it ideal for slim devices like smartphones, tablets, and ultra-thin displays.

.2 Drive Circuit Design

LEDs are current-driven devices. To ensure uniform brightness when multiple LEDs are used in parallel, it is strongly recommended to use a dedicated current-limiting resistor in series with each LED. Driving multiple LEDs in parallel directly from a single current source (Circuit Model B) is discouraged, as slight variations in the forward voltage (Vf) characteristic of individual LEDs can lead to significant differences in current sharing and, consequently, uneven brightness.

.3 Electrostatic Discharge (ESD) Protection

The LED is sensitive to electrostatic discharge. Proper ESD control measures must be implemented during handling and assembly. These include the use of grounded wrist straps or anti-static gloves, ensuring all workstations and equipment are properly grounded, and maintaining a controlled humidity environment in the assembly area.

. Technical Comparison & Differentiation

The primary differentiating feature of this component is its ultra-low height of 0.80 mm, which is advantageous compared to standard LED packages. The combination of a wide 130-degree viewing angle and a well-defined binning structure for intensity, voltage, and wavelength provides designers with predictable performance. Its compatibility with standard IR, vapor phase, and wave soldering processes offers flexibility in manufacturing without requiring specialized equipment.

. Frequently Asked Questions (FAQs)

Q: What is the difference between peak wavelength and dominant wavelength?

A: Peak wavelength (λP) is the wavelength at which the emission spectrum has its maximum intensity. Dominant wavelength (λd) is derived from the CIE chromaticity diagram and represents the single wavelength that best matches the perceived color of the light. For design, dominant wavelength is more relevant for color specification.

Q: Can I drive this LED without a series resistor?

A: It is not recommended. The forward voltage has a range (2.8-3.8V). Connecting it directly to a voltage source near this range can cause excessive current if the LED's Vf is at the low end, potentially damaging it. A series resistor is necessary to set and limit the operating current reliably.

Q: How does temperature affect performance?

A: As ambient temperature increases, the luminous intensity typically decreases. The datasheet specifies a derating factor for forward current above 30°C. Also, the forward voltage has a negative temperature coefficient, meaning it decreases slightly as temperature rises.

. Design-in Case Study

Consider a design for a portable device requiring multiple blue status indicators. The designer selects the LTST-C171TBKT for its low profile. To ensure uniform brightness across all 5 indicators, they specify LEDs from the same luminous intensity bin (e.g., Bin Q) and forward voltage bin (e.g., Bin D9). A constant voltage source of 5V is available. Using the typical Vf of 3.3V (mid-point of D9) and a target current of 20 mA, the series resistor value is calculated as R = (5V - 3.3V) / 0.020A = 85 Ohms. A standard 82 Ohm or 91 Ohm resistor would be chosen, with power rating checked. The PCB layout uses the recommended pad dimensions and includes proper ESD protection zones in the assembly area.

. Operating Principle Introduction

This is a semiconductor light-emitting diode. When a forward voltage is applied across the anode and cathode, electrons and holes are injected into the active region of the InGaN semiconductor material. These charge carriers recombine, releasing energy in the form of photons (light). The specific energy bandgap of the InGaN material determines the wavelength of the emitted photons, which in this case is in the blue region of the visible spectrum. The water-clear epoxy lens shapes the light output and provides environmental protection.

. Technology Trends

The trend in SMD LEDs continues towards higher efficiency (more lumens per watt), smaller package sizes, and improved thermal management to allow higher drive currents. There is also a focus on tighter binning tolerances to provide more consistent color and brightness for demanding applications like display backlighting. The drive for miniaturization in consumer electronics pushes for even thinner packages than the 0.80mm featured here.