ELCS14G-NB2530J6J7293910-F3Y LED Datasheet - Kifurushi 2.5x3.0mm - Voltage 2.95-3.95V - Mwangaza 220lm @1A - Nyeupe Joto 2500-3000K - Waraka wa Kiufundi wa Kiswahili

1. Muhtasari wa Bidhaa ELCS14G-NB2530J6J7293910-F3Y ni LED yenye utendaji bora, inayowekwa kwenye uso, iliyoundwa kwa matumizi yanayohitaji pato kubwa la mwangaza na ufanisi bora katika umbo dogo. Kifaa hiki hutumia teknolojia ya chip ya InGaN kutoa mwanga mweupe joto wenye safu ya halijoto ya rangi (CCT) ya 2500K hadi 3000K. Malengo yake makuu ya muundo ni kutoa mwangaza mkubwa huku ukidumisha ukubwa mdogo, na kufanya iweze kutumika katika miundo yenye nafasi ndogo. Faida kuu za LED hii ni pamoja na mwangaza wa kawaida wa lumani 220 kwa mkondo wa kuendesha wa 1000mA, na kusababisha ufanisi wa juu wa mwangaza wa takriban lumani 63.77 kwa wati. Soko lengwa ni tofauti, likijumuisha vifaa vya umeme vya watumiaji, taa za jumla, na matumizi maalum ya mwanga ambapo uaminifu na utendaji ni muhimu.

2. Uchambuzi wa kina wa Vigezo vya Kiufundi 2.1 Vipimo Vya Juu Kabisa Kifaa hiki kimeainishwa kufanya kazi ndani ya mipaka mibaya ili kuhakikisha uaminifu wa muda mrefu. Vipimo vya juu kabisa vinafafanua mipaka ambayo kuzidi kunaweza kusababisha uharibifu wa kudumu. Mkondo wa mbele wa DC wa uendeshaji endelevu (hali ya tochi) umekadiriwa kuwa 350mA. Kwa uendeshaji wa msukumo, mkondo wa kilele wa msukumo wa 1000mA unaruhusiwa chini ya mzunguko maalum wa kazi (400ms wakati wa kuwaka, 3600ms wakati wa kuzima, kwa mizunguko 30000). Halijoto ya juu kabisa ya kiungo ni 145°C, na safu ya halijoto ya uendeshaji ni -40°C hadi +85°C. Kifaa kinaweza kustahimili halijoto ya kuuza ya 260°C kwa mizunguko miwili ya juu kabisa ya reflow. Ni muhimu kukumbuka kuwa LED hizi hazijaundwa kwa uendeshaji wa upande wa nyuma. Upinzani wa joto kutoka kiungo hadi pedi ya kuuza umeainishwa kuwa 8.5°C/W, ambayo ni kigezo muhimu kwa muundo wa usimamizi wa joto.

2.2 Tabia za Umeme na Mwangaza Vigezo muhimu vya utendaji hupimwa chini ya hali zilizodhibitiwa na halijoto ya pedi ya kuuza (Ts) ya 25°C. Tabia kuu ni mwangaza (Iv), ambayo ina thamani ya kawaida ya lumani 220 kwa IF ya 1000mA, na kiwango cha chini cha 200 lm na kiwango cha juu cha 300 lm kulingana na muundo wa kugawa katika makundi. Voltage ya mbele (VF) kwa mkondo huu ni kati ya 2.95V (Chini) hadi 3.95V (Juu), na thamani ya kawaida ya 3.45V. Halijoto ya rangi inayohusiana inazunguka 2750K, na safu kutoka 2500K hadi 3000K. Data zote za umeme na mwangaza hujaribiwa kwa kutumia hali ya msukumo wa 50ms ili kupunguza athari za joto wakati wa kipimo, na kuhakikisha data inawakilisha utendaji wa LED kabla ya kupanda kwa joto.

3. Maelezo ya Mfumo wa Kugawa Katika Makundi Bidhaa hii imegawanywa kulingana na vigezo vitatu muhimu: mwangaza (luminous flux), voltage ya mbele (forward voltage), na uhalisia wa rangi (chromaticity). Uainishaji huu unahakikisha uthabiti katika muundo wa matumizi.

3.1 Kugawa Mwangaza Katika Makundi Mwangaza umegawanywa chini ya msimbo 'J6'. Kikundi hiki kinaelezea safu ya mwangaza kutoka kiwango cha chini cha 200 lm hadi kiwango cha juu cha 300 lm inapotumika kwa mkondo wa 1000mA, na thamani ya kawaida ikiwa 220 lm.

3.2 Kugawa Voltage ya Mbele Katika Makundi Voltage ya mbele imegawanywa chini ya msimbo '2939'. Kikundi hiki kinafafanua safu ya VF kutoka 2.95V hadi 3.95V kwa 1000mA, na thamani ya kawaida ya 3.45V.

3.3 Kugawa Uhalisia wa Rangi Katika Makundi Rangi imegawanywa chini ya msimbo '2530'. Hii inarejelea eneo maalum kwenye chati ya CIE 1931 ya uhalisia wa rangi inayolingana na mwanga mweupe joto wenye CCT kati ya 2500K na 3000K. Muundo wa kikundi hiki umefafanuliwa na mipaka maalum ya kuratibu (x, y) ili kuhakikisha uthabiti wa rangi. Ruhusa ya kipimo kwa kuratibu za rangi ni ±0.01.

4. Uchambuzi wa Mviringo wa Utendaji 4.1 Voltage ya Mbele dhidi ya Mkondo wa Mbele Uhusiano kati ya voltage ya mbele (VF) na mkondo wa mbele (IF) sio wa mstari, kama ilivyo kwa diode. Mviringo unaonyesha VF ikiongezeka kwa IF. Wabunifu hutumia mviringo huu kukadiria upotevu wa voltage kwenye LED kwa mikondo tofauti ya uendeshaji, ambayo ni muhimu kwa muundo wa saketi ya kiendeshi na mahesabu ya utupaji wa nguvu.

4.2 Mwangaza wa Jamaa dhidi ya Mkondo wa Mbele Mviringo huu unaonyesha pato la mwanga linalohusiana na mkondo wa kuendesha. Mwanzoni, mwangaza huongezeka karibu kwa mstari na mkondo lakini unaweza kuonyesha ishara za kupungua kwa ufanisi (kupungua kwa ufanisi) kwa mikondo ya juu, mara nyingi kutokana na kuongezeka kwa halijoto ya kiungo na athari nyingine za fizikia ya semiconductor. Mviringo huu husaidia kubaini sehemu bora ya uendeshaji kwa usawa wa mwangaza na ufanisi.

4.3 CCT dhidi ya Mkondo wa Mbele Halijoto ya rangi inayohusiana inaweza kubadilika na mkondo wa kuendesha. Mviringo huu unaonyesha mabadiliko ya CCT katika safu ya mkondo wa uendeshaji. Kwa LED hii ya mweupe joto, CCT inabaki thabiti kiasi katika safu ya mkondo, ikibaki kati ya takriban 2500K na 3000K, ambayo ni muhimu kwa matumizi ambapo muonekano thabiti wa rangi unahitajika.

4.4 Usambazaji wa Mwangaza wa Spektra Grafu ya usambazaji wa nguvu ya spektra (SPD) inaonyesha ukubwa wa mwanga unaotolewa kwa kila urefu wa wimbi. Kwa LED nyeupe, hii kwa kawaida inaonyesha kilele kikubwa cha bluu kutoka kwa chip ya InGaN na mionzi pana ya manjano/nyekundu kutoka kwa fosforasi. Urefu wa wimbi wa kilele (λp) na umbo la spektra huamua sifa za kuonyesha rangi za mwanga.

4.5 Muundo wa Kawaida wa Mionzi Muundo wa polar wa mionzi unaonyesha usambazaji wa anga wa mwanga. Kifaa hiki kina muundo wa utoaji wa Lambertian, ambapo ukubwa wa mwangaza unalingana na cosine ya pembe ya kuona. Pembe ya kuona (2θ1/2), ambapo ukubwa hupungua hadi nusu ya thamani ya kilele, imeainishwa kuwa digrii 120 (tolerance ya ±5°). Pembe hii pana ya kuona inafaa kwa matumizi ya jumla ya mwanga.

5. Taarifa ya Mitambo na Kifurushi LED hii imewekwa kwenye kifurushi kidogo cha kifaa cha kusakinisha kwenye uso (SMD). Vipimo vya kifurushi ni urefu wa 2.5mm na upana wa 3.0mm, kama inavyoonyeshwa na '2530' kwenye nambari ya sehemu. Mchoro wa kina wa vipimo hutoa vipimo halisi vya mwili wa LED, pedi za kuuza (anodi na katodi), na sifa zozote za mitambo. Ubaguzi wa polarity umeonyeshwa wazi kwenye kifurushi, kwa kawaida kwa kiashiria cha katodi. Muundo wa pedi ya kuuza ni muhimu kwa muunganisho wa umeme na, muhimu zaidi, kwa utupaji wa joto. Ukubwa sahihi wa pedi kwenye PCB unahakikisha uaminifu wa kiungo cha kuuza na uhamisho bora wa joto kutoka kiungo cha LED hadi bodi ya mzunguko wa kuchapishwa.

6. Mwongozo wa Kuuza na Kukusanyika 6.1 Kuuza kwa Reflow Kifaa hiki kimekadiriwa kwa halijoto ya juu kabisa ya kuuza ya 260°C na kinaweza kustahimili mizunguko miwili ya juu kabisa ya reflow. Ni muhimu sana kufuata wasifu ulipendekezwa wa reflow ili kuepuka mshtuko wa joto, ambao unaweza kusababisha ufa wa kifurushi au kutenganishwa ndani. Halijoto ya kilele na wakati juu ya kioevu lazima udhibitiwe.

6.2 Uhifadhi na Ushughulikiaji LED hizi ni nyeti kwa unyevu (kiwango cha MSL kimeainishwa). Mfuko wa kuzuia unyevu haupaswi kufunguliwa hadi vipengele vitakapokuwa tayari kutumika. Ikiwa mfuko umefunguliwa au wakati maalum wa kuhifadhi umepitwa, utayarishaji wa kwanza wa kuoka (k.m., 60±5°C kwa masaa 24) unahitajika ili kuondoa unyevu uliokithiri na kuzuia "popcorning" (kufa kwa kifurushi) wakati wa reflow.

6.3 Usimamizi wa Joto Usimamizi bora wa joto ni muhimu sana kudumisha utendaji na umri mrefu. LED inapaswa kusakinishwa kwenye PCB ya msingi wa chuma (MCPCB) au chini nyingine yenye conductivity nzuri ya joto. Upinzani wa joto wa 8.5°C/W ni kutoka kiungo hadi pedi ya kuuza; upinzani wa jumla wa mfumo wa joto kwa mazingira lazima usimamiwe ili kuweka halijoto ya kiungo chini kabisa ya kiwango cha juu cha 145°C, hasa wakati wa uendeshaji endelevu. Uendeshaji kwa halijoto ya juu kabisa kwa muda mrefu (kuzidi saa 1) unapaswa kuepukwa.

6.4 Ulinzi wa Umeme Ingawa kifaa kinaweza kuwa na ulinzi fulani wa ESD, hakijaundwa kwa upande wa nyuma. Kipingamizi cha mfululizo wa nje au kiendeshi cha mkondo thabiti ni muhimu ili kupunguza mkondo na kulinda dhidi ya mabadiliko ya voltage. Bila kizuizi cha mkondo, ongezeko dogo la voltage linaweza kusababisha ongezeko kubwa, linaloweza kuharibu, la mkondo.

7. Ufungaji na Taarifa ya Kuagiza LED hizi hutolewa kwenye ufungaji unaozuia unyevu. Kwa kawaida hutolewa kwenye mkanda wa kubeba uliochapishwa, ambao kisha hupindwa kwenye reeli. Reeli ya kawaida ina vipande 3000, na kiwango cha chini cha kuagiza ni vipande 1000. Lebo ya bidhaa kwenye reeli inajumuisha taarifa muhimu: nambari ya sehemu (P/N), nambari ya kundi (LOT NO), idadi ya ufungaji (QTY), na misimbo maalum ya kikundi kwa mwangaza (CAT), rangi (HUE), na voltage ya mbele (REF). Kiwango cha MSL pia kinaonyeshwa (MSL-X). Vipimo vya mkanda wa kubeba na reeli hutolewa ili kuwezesha usanidi wa mashine ya kuchukua na kuweka otomatiki.

8. Mapendekezo ya Matumizi 8.1 Mazingira ya Kawaida ya Matumizi Flash ya Kamera ya Kifaa cha Mkononi: Uwezo wa mkondo wa juu wa msukumo (1000mA) na pato kubwa la mwangaza hufanya iweze kutumika kwa matumizi ya flash/strobe ya kamera katika simu za mkononi na kamera za dijiti. Tochi na Mwanga wa Kubebeka: Inatumika katika kamera za video za dijiti, tochi za mkono, na vifaa vingine vya mwanga vinavyobebeka. Mwanga wa Jumla na Mapambo: Inafaa kwa taa za ndani, mwanga wa kuangazia, taa za ngazi, ishara za kutoka, na matumizi mengine ya usanifu au mapambo yanayofaidika na mwanga mweupe joto. Mwanga wa Nyuma wa TFT: Inaweza kutumika kama chanzo cha mwanga wa nyuma cha mwangaza mkubwa kwa maonyesho madogo hadi ya kati. Mwanga wa Magari: Inafaa kwa matumizi ya ndani (mwanga wa mazingira, taa za kusoma) na nje (mwanga wa ziada) ya magari, ikizingatia kukutana na viwango vinavyohusika vya magari.

8.2 Mambo ya Kuzingatia katika Muundo Uchaguzi wa Kiendeshi: Tumia kiendeshi cha mkondo thabiti kinachofaa kwa mkondo unaotaka wa uendeshaji (hadi 350mA DC au 1000mA ya msukumo). Hakikisha voltage ya utii ya kiendeshi inazidi VF ya juu kabisa ya LED. Mpangilio wa PCB: Buni PCB na eneo la kutosha la shaba au mashimo ya joto chini ya pedi za LED ili kutumika kama kizuizi cha joto. Hii ni muhimu sana kwa kutupa joto la wati kadhaa linalozalishwa (Nguvu ≈ VF * IF). Muundo wa Mwangaza: Pembe ya kuona ya Lambertian ya digrii 120 inaweza kuhitaji optiki ya sekondari (lenzi, vikumbushio) ili kufikia muundo unaotaka wa boriti kwa matumizi maalum kama flash au kuangazia. Uthabiti wa Rangi: Kwa matumizi yanayohitaji mechi ya rangi kali, tumia LED kutoka kwa kundi moja la uzalishaji au taja mahitaji madhubuti ya kugawa katika makundi.

9. Ulinganisho wa Kiufundi na Tofauti Ikilinganishwa na LED za kawaida za nguvu ya kati, kifaa hiki kinatoa mwangaza mkubwa zaidi kwa ukubwa wake wa kifurushi (2.5x3.0mm). Ufanisi wake wa kawaida wa ~64 lm/W kwa 1A ni wa ushindani. Tofauti kuu ni mchanganyiko wake wa pato kubwa la mwangaza, halijoto ya rangi ya mweupe joto katika kifurushi kidogo cha SMD, na maelezo madhubuti ya uendeshaji wa msukumo. Inajaza nafasi kati ya LED ndogo, zenye nguvu ndogo na LED kubwa, zenye nguvu zaidi za COB (Chip-on-Board). Muundo uliofafanuliwa wa kugawa mwangaza, voltage, na rangi huwapa wabunifu utendaji unaotabirika, na kupunguza hitaji la urekebishaji mkubwa wa mfumo.

10. Maswali Yanayoulizwa Mara kwa Mara (Kulingana na Vigezo vya Kiufundi) Q: Kuna tofauti gani kati ya mkondo wa mbele wa DC (350mA) na mkondo wa kilele wa msukumo (1000mA)? A: Mkondo wa mbele wa DC (350mA) ni mkondo wa juu kabisa unaweza kutumika endelevu bila hatari ya kuharibu. Mkondo wa kilele wa msukumo (1000mA) ni mkondo mkubwa zaidi unaweza kutumika kwa muda mfupi sana (400ms katika kesi hii) na wakati mrefu wa kuzima (3600ms) ili kuruhusu kiungo kupoa. Hii ni ya kawaida kwa matumizi ya flash ya kamera. Q: Ninawezaje kufasiri kikundi cha mwangaza 'J6' (200-300 lm)? A: Hii inamaanisha kuwa LED yoyote iliyowekwa alama ya kikundi J6 itakuwa na mwangaza uliopimwa kati ya 200 na 300 lumani inapojaribiwa kwa 1000mA. Thamani ya kawaida ni 220 lm. Kwa muundo, kutumia thamani ya chini (200 lm) ni ya kihafidhina kwa kuhakikisha pato la chini la mwanga. Q: Kwa nini usimamizi wa joto unasisitizwa sana? A: Utendaji wa LED hupungua kwa kuongezeka kwa halijoto ya kiungo. Pato la mwangaza hupungua, voltage ya mbele hubadilika, na rangi inaweza kubadilika. Muhimu zaidi, uendeshaji kwa halijoto ya juu hupunguza sana umri wa LED. Upinzani wa joto wa 8.5°C/W ni njia kutoka kiungo cha semiconductor hadi pedi yako ya kuuza; lazima ubuni sehemu nyingine ya njia (PCB, kizuizi cha joto) ili kuweka kiungo kipoze. Q: Ninaweza kuendesha LED hii moja kwa moja kutoka kwa usambazaji wa 3.3V au 5V? A: Hapana. LED ni vifaa vinavyotumika kwa mkondo. Kuiunganisha moja kwa moja kwenye chanzo cha voltage kutasababisha mkondo usiodhibitiwa kupita, na kuzidi vipimo vya juu kabisa na kuharibu LED mara moja. Lazima utumie utaratibu wa kuzuia mkondo, kama vile kiendeshi cha mkondo thabiti au kipingamizi cha mfululizo kilichohesabiwa kulingana na voltage ya usambazaji na VF ya LED.

11. Mifano ya Matumizi ya Vitendo Kesi 1: Moduli ya Flash ya Kamera ya Simu ya Mkononi: Mbunifu anaanzisha flash ya LED mbili kwa simu ya mkononi. Wanatumia LED hizi mbili zinazoendeshwa sambamba na IC maalum ya kiendeshi cha flash. Kiendeshi hutoa mkondo wa msukumo wa 1000mA kwa muda unaodhibitiwa na programu ya kamera. Ukubwa mdogo unawaruhusu kuingiza moduli karibu na lenzi ya kamera. Wanabuni kipande kidogo cha chuma kwenye PCB ya kubadilika chini ya LED ili kudhibiti joto linalozalishwa wakati wa mlolongo wa flash. Kesi 2: Mwanga wa Ngazi wa Usanifu: Kwa kuangazia ngazi za hatua katika jengo la kibiashara, mhandisi anabuni extrusion ya alumini ya wastani na mfereji. LED nyingi zimewekwa kando ya mfereji, zinazoendeshwa na kiendeshi cha LED cha mkondo thabiti kwa 300mA (chini ya kiwango cha juu cha DC) kwa uendeshaji endelevu. Mwanga mweupe joto (2750K) hutoa muonekano mzuri na mazingira. Extrusion ya alumini hutumika kama makazi na kizuizi cha joto, na kuhakikisha uaminifu wa muda mrefu.

12. Utangulizi wa Kanuni ya Uendeshaji LED hii ni chanzo cha mwanga cha hali ngumu kinachotegemea fizikia ya semiconductor. Inatumia chip ya Indiamu Galiamu Nitraidi (InGaN) inayotoa mwanga wa bluu wakati elektroni na mashimo zinajumuishwa tena kwenye pengo la bendi la chip wakati voltage ya mbele inatumika (electroluminescence). Mwanga huu wa bluu kisha hubadilishwa kwa sehemu kuwa urefu wa wimbi mrefu (manjano, nyekundu) na safu ya nyenzo ya fosforasi iliyowekwa kwenye au karibu na chip. Mchanganyiko wa mwanga wa bluu uliobaki na mwanga uliobadilishwa na fosforasi husababisha mtazamo wa mwanga mweupe. Uwiano maalum wa muundo wa fosforasi huamua halijoto ya rangi inayohusiana (CCT) na faharasa ya kuonyesha rangi (CRI) ya mwanga mweupe unaotolewa.

13. Mienendo ya Teknolojia Mwenendo wa jumla katika teknolojia ya LED unaelekea kwenye ufanisi wa juu zaidi (lumani zaidi kwa wati), ubora bora wa rangi (CRI ya juu na uthabiti wa rangi sahihi zaidi), na msongamano wa nguvu ulioongezeka (mwanga zaidi kutoka kifurushi kidogo). Pia kuna msukumo mkubwa wa kuboresha uaminifu na umri mrefu chini ya halijoto ya juu ya uendeshaji. Katika ufungaji, maendeleo yanalenga kuboresha ufanisi wa kutoa mwanga na usimamizi wa joto ndani ya kifurushi yenyewe. Kwa LED nyeupe, teknolojia ya fosforasi inaendelea kubadilika ili kutoa utendaji thabiti zaidi juu ya joto na wakati, na kuwezesha safu pana ya halijoto ya rangi na sifa za spektra. Kifaa kilichoelezewa kwenye waraka huu wa data kinawakilisha hatua ya kukomaa katika mienendo hii inayoendelea, na kutoa usawa wa utendaji, ukubwa, na gharama kwa matumizi yake yaliyolengwa.

The polar radiation pattern indicates the spatial distribution of light. This device features a Lambertian emission pattern, where the luminous intensity is proportional to the cosine of the viewing angle. The viewing angle (2θ1/2), where intensity drops to half of the peak value, is specified as 120 degrees (±5° tolerance). This wide viewing angle is suitable for general illumination applications.

. Mechanical and Package Information

The LED is housed in a compact surface-mount device (SMD) package. The package dimensions are 2.5mm in length and 3.0mm in width, as indicated by the '2530' in the part number. The detailed dimensioned drawing provides exact measurements for the LED body, solder pads (anode and cathode), and any mechanical features. The polarity is clearly marked on the package, typically with a cathode indicator. The solder pad design is crucial for both electrical connection and, more importantly, for heat dissipation. A proper footprint on the PCB ensures good solder joint reliability and optimal thermal transfer from the LED junction to the printed circuit board.

. Soldering and Assembly Guidelines

.1 Reflow Soldering

The device is rated for a maximum soldering temperature of 260°C and can withstand a maximum of two reflow cycles. It is critical to follow the recommended reflow profile to avoid thermal shock, which can cause package cracking or internal delamination. The peak temperature and time above liquidus must be controlled.

.2 Storage and Handling

The LEDs are moisture-sensitive (MSL Level specified). The moisture-proof bag should not be opened until the components are ready for use. If the bag is opened or the specified floor life is exceeded, a baking pre-conditioning (e.g., 60±5°C for 24 hours) is required to remove absorbed moisture and prevent "popcorning" (package cracking) during reflow.

.3 Thermal Management

Effective thermal management is paramount for maintaining performance and longevity. The LED should be mounted on a suitable metal-core PCB (MCPCB) or other substrate with good thermal conductivity. The thermal resistance of 8.5°C/W is from the junction to the solder pad; the total system thermal resistance to ambient must be managed to keep the junction temperature well below the maximum rating of 145°C, especially during continuous operation. Operating at maximum temperature for extended periods (exceeding 1 hour) should be avoided.

.4 Electrical Protection

Although the device may have some ESD protection, it is not designed for reverse bias. An external series resistor or constant-current driver is essential to limit current and protect against voltage transients. Without current limiting, a small increase in voltage can cause a large, potentially destructive, increase in current.

. Packaging and Ordering Information

The LEDs are supplied in moisture-resistant packing. They are typically delivered on embossed carrier tapes, which are then wound onto reels. A standard reel contains 3000 pieces, with a minimum order quantity of 1000 pieces. The product labeling on the reel includes critical information: the part number (P/N), lot number (LOT NO), packing quantity (QTY), and the specific bin codes for luminous flux (CAT), color (HUE), and forward voltage (REF). The MSL level is also indicated (MSL-X). The carrier tape and reel dimensions are provided to facilitate automated pick-and-place machine setup.

. Application Suggestions

.1 Typical Application Scenarios

• Mobile Device Camera Flash:The high pulsed current capability (1000mA) and high luminous output make it suitable for camera flash/strobe applications in smartphones and digital cameras.
• Torch and Portable Lighting:Used in digital video cameras, handheld torches, and other portable lighting devices.
• General and Decorative Lighting:Ideal for indoor lighting, accent lighting, step lights, exit signs, and other architectural or decorative applications benefiting from warm white light.
• TFT Backlighting:Can be used as a high-brightness backlight source for small to medium displays.
• Automotive Lighting:Suitable for both interior (ambient lighting, reading lights) and exterior (auxiliary lighting) automotive applications, subject to meeting relevant automotive standards.

.2 Design Considerations

• Driver Selection:Use a constant-current driver appropriate for the desired operating current (up to 350mA DC or 1000mA pulsed). Ensure the driver's compliance voltage exceeds the LED's maximum VF.
• PCB Layout:Design the PCB with adequate copper area or thermal vias under the LED pads to act as a heat sink. This is critical for dissipating the several watts of heat generated (Power ≈ VF * IF).
• Optical Design:The Lambertian 120-degree viewing angle may require secondary optics (lenses, reflectors) to achieve desired beam patterns for specific applications like flash or spotlighting.
• Color Consistency:For applications requiring tight color matching, use LEDs from the same production lot or specify tight binning requirements.

. Technical Comparison and Differentiation

Compared to standard mid-power LEDs, this device offers significantly higher luminous flux for its package size (2.5x3.0mm). Its typical efficiency of ~64 lm/W at 1A is competitive. The key differentiators are its combination of high flux output, warm white color temperature in a compact SMD package, and robust specification for pulsed operation. It fills a niche between smaller, lower-power LEDs and larger, higher-power COB (Chip-on-Board) LEDs. The defined binning structure for flux, voltage, and color provides designers with predictable performance, reducing the need for extensive system calibration.

. Frequently Asked Questions (Based on Technical Parameters)

Q: What is the difference between DC forward current (350mA) and peak pulse current (1000mA)?

A: The DC forward current (350mA) is the maximum current that can be applied continuously without risking damage. The peak pulse current (1000mA) is a much higher current that can only be applied for very short durations (400ms in this case) with a long off time (3600ms) to allow the junction to cool. This is typical for camera flash applications.

Q: How do I interpret the luminous flux bin 'J6' (200-300 lm)?

A: This means any LED labeled with bin J6 will have a measured luminous flux between 200 and 300 lumens when tested at 1000mA. The typical value is 220 lm. For design, using the minimum value (200 lm) is conservative for ensuring minimum light output.

Q: Why is thermal management so emphasized?

A> LED performance degrades with increasing junction temperature. Luminous output decreases, forward voltage shifts, and color can change. More critically, operating at high temperatures drastically reduces the LED's lifetime. The 8.5°C/W thermal resistance is the path from the semiconductor junction to your solder pad; you must design the rest of the path (PCB, heatsink) to keep the junction cool.

Q: Can I drive this LED directly from a 3.3V or 5V supply?

A: No. LEDs are current-driven devices. Connecting it directly to a voltage source will cause an uncontrolled current to flow, likely exceeding the maximum ratings and destroying the LED instantly. You must use a current-limiting mechanism, such as a constant-current driver or a series resistor calculated based on the supply voltage and the LED's VF.

. Practical Use Case Examples

Case 1: Smartphone Camera Flash Module:A designer is creating a dual-LED flash for a smartphone. They use two of these LEDs driven in parallel by a dedicated flash driver IC. The driver provides the 1000mA pulsed current for a duration controlled by the camera software. The compact size allows them to fit the module next to the camera lens. They design a small metal slug on the flex PCB under the LEDs to manage the heat generated during a flash sequence.

Case 2: Architectural Step Lighting:For illuminating stair treads in a commercial building, an engineer designs a low-profile aluminum extrusion with a channel. Multiple LEDs are spaced along the channel, driven by a constant-current LED driver at 300mA (below the DC max) for continuous operation. The warm white light (2750K) provides good visibility and ambiance. The aluminum extrusion acts as both a housing and a heatsink, ensuring long-term reliability.

. Operating Principle Introduction

This LED is a solid-state light source based on semiconductor physics. It uses an Indium Gallium Nitride (InGaN) chip that emits blue light when electrons and holes recombine across the chip's bandgap upon application of a forward voltage (electroluminescence). This blue light is then partially converted to longer wavelengths (yellow, red) by a layer of phosphor material deposited on or near the chip. The mixture of the remaining blue light and the phosphor-converted light results in the perception of white light. The specific ratios of the phosphor composition determine the correlated color temperature (CCT) and color rendering index (CRI) of the emitted white light.

. Technology Trends

The general trend in LED technology is towards higher efficacy (more lumens per watt), improved color quality (higher CRI and more precise color consistency), and increased power density (more light from smaller packages). There is also a strong drive for improved reliability and longer lifetimes under higher operating temperatures. In packaging, advancements aim to improve light extraction efficiency and thermal management within the package itself. For white LEDs, phosphor technology continues to evolve to provide more stable performance over temperature and time, and to enable a wider range of color temperatures and spectral qualities. The device described in this datasheet represents a mature point in these ongoing trends, offering a balance of performance, size, and cost for its target applications.