LTS-2801AKS 0.28-inch LED Mai Nuna Yellow - Tsawon Lamba 7.0mm - Karfin Wutar Gaba 2.6V - Wutar Lantarki 70mW

Teburin Abubuwan Ciki

1. Bayyani Game da Samfur

LTS-2801AKS na'urar nuni ce ta LED mai nuna lamba guda daya, mai sassa bakwai. An tsara ta don ba da bayyani mai haske, mai bambanci na lambobi da wasu haruffa a cikin tsari mai karami. Fasahar cikin gindi ta amfani da kayan semiconductor na Aluminum Indium Gallium Phosphide (AlInGaP) da aka ajiye a kan kayan Gallium Arsenide (GaAs), wanda aka kera don fitar da haske a cikin kewayon tsawon rawaya. Wannan zaɓin kayan na musamman yana ba da fa'idodi a cikin inganci da ƙarfin haske don launin da ake nufi. Na'urar tana da fuskar fuska mai launin toka tare da rabe-rabe masu farare, wanda ke haɓaka bambanci da karantawa a ƙarƙashin yanayin haske daban-daban. Manufar ƙirarta ta asali ita ce haɗawa cikin kayan lantarki inda sarari ya takura amma ana buƙatar nuni mai bayyanawa, kamar a cikin allunan kayan aikin ma'auni, nunin kayan lantarki na mabukaci, da kuma mu'amalar sarrafa masana'antu.

1.1 Siffofi da Fa'idodi Masu Muhimmanci

Girman Lamba Mai Karami:Yana da tsayin harafi na inci 0.28 (mm 7.0), wanda ya sa ya dace da aikace-aikacen da ke da iyakataccen sarari a panel.
Ingancin Gani:An tsara shi tare da sassa masu ci gaba, iri ɗaya don bayyanar gani iri ɗaya a ko'ina cikin lambar.
Ingancin Wutar Lantarki:An ƙera shi don ƙarancin buƙatun wutar lantarki, yana ba da gudummawa ga ƙirar tsarin mai ingancin makamashi.
Kyakkyawan Karantawa:Yana ba da kyakkyawan bayyanar haruffa tare da babban haske da babban bambanci da bangon bango mai launin toka.
Faɗin Kallon Kallo:Yana ba da faɗin kusurwar kallo, yana tabbatar da karantawa daga ra'ayoyi daban-daban.
Babban Dogaro:Yana amfana daga ginin ƙwaƙƙwaran jiki, wanda ke haifar da tsawon rayuwar aiki da juriya ga girgiza da rawar jiki.
Rarraba don Daidaito:Ana rarraba na'urori (bin) don ƙarfin haske, yana ba da damar daidaita haske a cikin nunin lambobi da yawa.
Yin Biyayya da Muhalli:Kunshin ba shi da gubar, an kera shi daidai da umarnin Hana Abubuwa Masu Hadari (RoHS).

1.2 Gano Na'ura

Lambar sashi LTS-2801AKS tana nuna musamman nunin LED na AlInGaP mai fitar da rawaya tare da tsarin lantarki na anode gama-gari kuma ya haɗa da maki goma na hannun dama. Wannan tsarin suna yana ba da damar tantance daidai halayen gani da na lantarki na na'urar.

2. Bayanin Injiniya da Kunshin

An ajiye nunin a cikin kunshin LED na yau da kullun da aka tsara don ɗora ta hanyar rami akan allunan da'ira (PCBs). An ba da cikakkun zane-zane masu girma a cikin takardar bayanan, suna ƙayyadadden gabaɗayan ƙafar ƙafa, wurin sashi, da matsayin jagora (fil). Muhimman bayanan injiniya sun haɗa da jurewar ±0.25mm akan mafi yawan girma, ƙayyadaddun game da lahani na ado da aka halatta (kamar kayan waje ko kumfa a cikin yankin sashi), da jurewar matsayin fil. Mai kera yana ba da shawarar diamita na rami na PCB na 1.0 mm don mafi kyawun dacewa na injiniya da amincin haɗin gwiwa.

3. Tsarin Lantarki da Pinout

3.1 Zanen Da'irar Ciki

Na'urar tana amfani da tsarin anode gama-gari. Wannan yana nufin cewa tashoshin anode (gefen tabbatacce) na duk sassan LED da maki goma suna haɗe a ciki zuwa fil ɗin gama-gari. Kowane sashe na musamman (A zuwa G) da maki goma (D.P.) yana da nasa fil na cathode (maras kyau). Wannan tsari ya zama na yau da kullun don da'irori masu tuƙi da yawa, inda ake zaɓar anodes gama-gari yayin da ake ƙaddamar da fil ɗin cathode da suka dace don haskaka takamaiman sassa.

3.2 Teburin Haɗin Fil

Na'urar mai fil 10 tana da tsarin pinout mai zuwa: Fil 1: Cathode don sashi E; Fil 2: Cathode don sashi D; Fil 3: Anode Gama-gari; Fil 4: Cathode don sashi C; Fil 5: Cathode don Maki Goma (D.P.); Fil 6: Cathode don sashi B; Fil 7: Cathode don sashi A; Fil 8: Anode Gama-gari (haɗin na biyu); Fil 9: Cathode don sashi G; Fil 10: Cathode don sashi F. Fil ɗin anode gama-gari biyu (3 da 8) suna haɗe a ciki kuma suna ba da sassauci na ƙira don rarraba halin yanzu.

4. Matsakaicin Matsakaicin Ƙimar da Halaye

4.1 Matsakaicin Matsakaicin Ƙimar

Waɗannan ƙimar suna ayyana iyakokin damuwa waɗanda sama da su lalacewar dindindin na iya faruwa ga na'urar. Ba a nufin su don aiki na yau da kullun ba. Muhimman iyakoki sun haɗa da: Matsakaicin ɓarnar wutar lantarki kowane sashi: 70 mW; Matsakaicin halin yanzu na gaba kowane sashi (ƙarƙashin yanayin bugun jini: 1/10 aikin aiki, faɗin bugun jini 0.1ms): 60 mA; Ci gaba da halin yanzu na gaba kowane sashi: 25 mA a 25°C, rage daraja a layi sama da wannan zafin jiki; Juyawar ƙarfin lantarki kowane sashi: 5 V (Lura: wannan don dalilai na gwaji ne kawai, ba a goyan bayan aikin juyawa mai ci gaba ba); Kewayon zafin jiki na aiki da ajiya: -35°C zuwa +105°C. Takardar bayanan kuma ta ƙayyade yanayin gudanarwa, tana iyakance zafin jiki a wurin zama zuwa matsakaicin 260°C na dakika 5 yayin haɗawa.

4.2 Halayen Lantarki da Na Gani

Ana auna waɗannan sigogi a ƙarƙashin yanayi na yau da kullun (Ta=25°C) kuma suna ayyana aikin da ake tsammani. Muhimman ƙayyadaddun bayanai sun haɗa da: Matsakaicin Ƙarfin Hasken kowane Sashi (Iv): 500 ucd (ƙarami), 1400 ucd (na al'ada) a halin yanzu na gaba (Idan) na 1 mA; Matsakaicin Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon 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. Performance Curves and Graphical Data

The datasheet includes a section for typical performance curves. These graphs visually represent the relationship between key parameters, providing designers with a deeper understanding of device behavior beyond the tabulated minimum, typical, and maximum values. While the specific curves are not detailed in the provided text, typical plots for such a device would include: Forward Current (If) vs. Forward Voltage (Vf), showing the diode's IV characteristic; Relative Luminous Intensity vs. Forward Current (If), indicating how light output scales with drive current; Relative Luminous Intensity vs. Ambient Temperature (Ta), demonstrating the thermal dependence of brightness; and possibly a spectral distribution graph showing the intensity of emitted light across wavelengths, centered around the 588 nm peak.

. Reliability Testing and Qualifications

The device undergoes a comprehensive suite of reliability tests based on established industry standards (MIL-STD, JIS). This ensures its robustness and longevity in the field. The test regimen includes:Operation Life (RTOL): hours of continuous operation at maximum rated current under room temperature conditions.Environmental Stress Tests:High Temperature High Humidity Storage (65°C, 90-95% RH for 500Hrs), High Temperature Storage (105°C for 1000Hrs), Low Temperature Storage (-35°C for 1000Hrs).Mechanical Stress Tests:Temperature Cycling (30 cycles between -35°C and 105°C) and Thermal Shock (30 cycles between -35°C and 105°C with rapid transitions).Process Validation Tests:Solder Resistance (260°C for 10 seconds) and Solderability (245°C for 5 seconds) to verify the integrity of the package leads during assembly.

. Soldering and Assembly Guidelines

.1 Automated Soldering Process

For wave or reflow soldering processes, the recommendation is to limit the temperature at a point 1/16 inch (approximately 1.6 mm) below the seating plane (where the package body meets the PCB) to a maximum of 260°C for a duration not exceeding 5 seconds. This profile helps prevent thermal damage to the internal LED chips and the epoxy package material.

.2 Manual Soldering Process

When using a hand soldering iron, care must be taken to localize heat. The guideline is to apply the iron tip 1/16 inch below the seating plane for a maximum of 5 seconds, with the iron tip temperature controlled to 350°C ±30°C. Using a temperature-controlled iron and a skilled operator is crucial to avoid exceeding these limits.

. Critical Application Cautions and Design Considerations

This section contains vital information for the design engineer to ensure safe and reliable operation of the display. Key cautions include:Intended Use:The display is designed for ordinary electronic equipment. Applications requiring exceptional reliability or where failure could jeopardize safety (aviation, medical, etc.) require prior consultation.Adherence to Ratings:Operation outside the Absolute Maximum Ratings voids responsibility for damage.Thermal and Current Management:Exceeding recommended drive currents or operating temperatures can cause severe light output degradation or premature failure. The safe operating current must be derated for high ambient temperatures.Drive Circuit Design:Constant current driving is strongly recommended for consistent brightness and longevity. The circuit must be designed to accommodate the full range of forward voltage (Vf) specified to ensure the target current is delivered. Furthermore, the circuit should incorporate protection against reverse voltages and voltage transients that may occur during power cycling. Reverse bias operation should be strictly avoided.

. Application Notes and Design Insights

.1 Typical Application Scenarios

The LTS-2801AKS is ideally suited for applications requiring a compact, single-digit numeric readout. Common uses include: panel meters for voltage, current, or temperature display; digital clocks and timers; appliance control panels (e.g., microwave ovens, washing machines); test and measurement equipment interfaces; and industrial controller status displays. Its yellow color offers good visibility and is often chosen for cautionary or status indicators.

.2 Circuit Design Considerations

Designing with this display requires attention to several factors. Due to its common anode configuration, a suitable driver IC (like a 7-segment decoder/driver) or microcontroller GPIO pins configured as current sinks are needed. Current-limiting resistors must be calculated based on the supply voltage, the LED forward voltage (using the maximum Vf for worst-case design), and the desired forward current. For multiplexing multiple digits, the peak current per segment can be higher than the DC rating, but the average current must remain within the continuous forward current limit, considering the duty cycle. Heat dissipation should be considered if operating near maximum ratings or in high ambient temperatures.

.3 Comparison and Selection Guidance

When selecting a display, compare key parameters: digit height (0.28\" is relatively small), color (yellow AlInGaP vs. red GaAsP or green/blue InGaN), brightness (luminous intensity bin), forward voltage (impacts driver design and power consumption), and viewing angle. The LTS-2801AKS's advantages lie in its efficient AlInGaP technology for yellow light, good brightness, and RoHS compliance. Designers should verify that its optical and electrical characteristics align with the specific requirements of brightness, color, power budget, and available drive voltage in their application.

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.