LTPL-G35UVC275PR UVC LED Datasheet - Dimensions 3.5x3.5x1.2mm - Typical Voltage 5.9V - Maximum Power 2.0W - Peak Wavelength 274nm - Simplified Chinese Technical Documentation

1. Product Overview

Mfululizo wa bidhaa LTPL-G35UVC unawakilisha mafanikio makubwa katika uwanja wa vyanzo vya mwanga wa ultraviolet thabiti vinavyolenga matumizi ya kuua vijidudu na matibabu. Bidhaa hii inachanganya faida za asili za teknolojia ya taa za diode zinazotoa mwanga (LED), kama vile maisha marefu ya huduma na uaminifu wa juu, pamoja na kiwango cha utendakazi kinachotosha kuchukua nafasi ya vyanzo vya jadi vya mwanga wa ultraviolet. Usanifu wake unakusudiwa kutoa ubunifu wa kubuni, na kuwezesha matumizi mapya katika nyanja zinazohitaji mionzi ya UVC yenye ufanisi.

Sifa muhimu za bidhaa hii ni pamoja na: Uwiano na mifumo ya kuendesha ya mzunguko uliojumuishwa (I.C.), kufuata amri ya RoHS (Vizuizi vya Vitu hatari) kuhakikisha hakuna risasi, na gharama ya jumla ya uendeshaji na matengenezo iliyo chini ikilinganishwa na teknolojia za jadi za ultraviolet kama vile taa za zebaki. Soko kuu lengwa linajumuisha wazalishaji wa vifaa katika nyanja kama vile vifaa vya matibabu, usafishaji wa maji, kuua vijidudu hewani na kuua vijidudu kwenye nyuso.

2. In-depth Interpretation of Technical Parameters

2.1 Absolute Maximum Ratings

Kwa kuhakikisha utendaji wa kudumu, kifaa hiki kinafanya kazi chini ya mipaka madhubuti ya mazingira na umeme. Thamani za juu kabisa zilizopimwa kwenye joto la mazingira (Ta) la 25°C zinaelezea mipaka ambayo kuzikosa kunaweza kusababisha uharibifu wa kudumu.

• Matumizi ya nguvu (Po):Upeo wa wati 2.0. Hii ndiyo jumla ya joto ambayo kifurushi kinaweza kutolea.
• Mkondo wa moja kwa moja wa mbele (IF):Upeo wa miliampe 300.
• Anuwai ya joto la uendeshaji (Topr):-40°C hadi +80°C. Kifaa kimepangwa kufanya kazi ndani ya anuwai hii pana ya joto.
• Anuwai ya joto la uhifadhi (Tstg):-40°C hadi +100°C.
• Joto la kiungo (Tj):Upeo wa 105°C. Joto la wafu yenyewe la semiconductor halipaswi kuzidi kikomo hiki.

Onyo muhimu la kuepuka uendeshaji wa LED chini ya hali ya upendeleo wa nyuma kwa muda mrefu, kwani hii inaweza kusababisha kushindwa kwa kifaa.

2.2 Electro-Optical Characteristics

Viashiria vikuu vya utendaji vinafafanuliwa chini ya hali ya Ta=25°C na mkondo wa majaribio (If) wa 250mA (inayozingatiwa kama sehemu ya kawaida ya kufanya kazi).

• Voltage ya mbele (Vf):Typical value is 5.9V, minimum is 5.2V, maximum is 7.7V. Measurement tolerance is ±0.1V.
• Radiant Flux (Φe):This is the total optical power output within the UVC spectral range. Typical value is 35.0 milliwatts (mW), minimum is 25.0 mW. Measurement tolerance is ±10%.
• Peak Wavelength (λp):The wavelength at which the LED emits its strongest optical power. Typical value is 274 nanometers (nm), ranging from 265nm to 280nm. Tolerance is ±3nm. This places it definitively within the UVC band (200-280nm), which is known for its germicidal efficacy.
• Viewing Angle (2θ1/2):Typical value is 120 degrees, defining the angular distribution of the emitted radiation.
• Thermal Resistance (Rth j-s):The typical thermal resistance from the semiconductor junction to the solder point is 16.8 K/W. This parameter is crucial for thermal management design. The reference measurement uses a specific aluminum-based metal core printed circuit board (MCPCB).
• Electrostatic Discharge (ESD) Sensitivity:Withstands up to 2000V according to the Human Body Model (JESD22-A114-B), indicating moderate ESD robustness, but careful handling is still required.

3. Explanation of the Binning System

To ensure consistency in application design, LEDs are binned according to key parameters. The binning code is marked on the packaging.

3.1 Kugawanya kwa Voltage ya Mbele (Vf)

LEDs are divided into five bins (V1 to V5) based on their forward voltage at 250mA. Each bin covers a 0.5V range, from 5.2-5.7V (V1) to 7.2-7.7V (V5). The tolerance within each bin is ±0.1V. This allows designers to select LEDs with similar electrical characteristics for parallel connection or current-sharing circuits.

3.2 Kugawanya kwa Flux ya Mionzi (Φe)

The optical output power is divided into four categories (X1 to X4). For example, bin X2 covers LEDs with a radiant flux between 30.0 mW and 35.0 mW at 250mA. Bin X4 specifies a minimum of 40.0 mW. The tolerance is ±7%. This binning is crucial for applications requiring a specific minimum irradiance dose.

3.3 Kugawanya kwa Urefu wa Wimbi la Kilele (Wp)

Currently, all devices belong to a single wavelength bin W1, ranging from 265nm to 280nm. The tolerance is ±3nm. This ensures all devices emit within the effective germicidal range.

4. Uchambuzi wa Curve ya Utendaji

The datasheet provides multiple graphs illustrating device behavior under various conditions. Unless otherwise noted, all curves are based on an ambient temperature of 25°C.

4.1 Relative Radiant Flux vs. Forward Current

Safu hii inaonyesha pato la mwanga linavyoongezeka kadri mkondo wa kuendesha unavyoongezeka, lakini sio laini kabisa. Inaonyesha uhusiano kati ya ingizo la umeme na pato la mwanga, na inasaidia kubaini sehemu bora ya kufanya kazi kwa ufanisi na pato.

4.2 Relative Spectral Distribution

Mchoro huu unaonyesha wigo wa utoaji, ukiwaonyesha nguvu ya mwanga kwenye urefu tofauti wa mawimbi. Unathibitisha kilele cha utoaji karibu na 274nm pamoja na upana wa wigo, jambo muhimu kwa kuelewa ufanisi wa LED dhidi ya vijidudu maalum.

4.3 Forward Current vs. Forward Voltage (I-V Curve)

Tabia ya msingi ya umeme ya diode. Safu hii ni muhimu sana kwa kubuni saketi ya kuendesha mkondo, kwani inaonyesha voltage inayohitajika kufikia mkondo unaotakiwa.

4.4 Relative Radiant Flux vs. Junction Temperature

Mkunjo huu muhimu unaonyesha jinsi pato la mwanga linavyopungua kadiri joto la kiungo (Tj) linavyopanda. Usimamizi bora wa joto ni muhimu ili kudumisha nguvu ya pato ya juu katika maisha ya LED.

4.5 Radiometric Characteristics (Spatial Distribution)

Ramani ya polar, inayoonyesha usambazaji wa nguvu kwa pembe, inathibitisha pembe ya maono ya digrii 120. Hii ni muhimu kwa kubuni mfumo wa optiki ili kuhakikisha mwangaza sawa kwenye uso lengwa.

4.6 Forward Current Derating Curve

Mchoro huu unafafanua uhusiano kati ya mkondo wa juu unaoruhusiwa wa mbele na joto la mazingira. Kadiri joto linavyopanda, mkondo wa juu salama hupungua, ili kuzuia joto la kiungo kuzidi kikomo chake cha 105°C.

4.7 Forward Voltage vs. Junction Temperature

Inaonyesha uhusiano kati ya voltage ya mwelekeo na joto la kiungo cha semiconductor, unaoweza kutumiwa kwa ufuatiliaji wa joto wa wastani au kuelewa tabia inayotegemea joto.

5. Mechanical and Package Information

5.1 Outline Dimensions

LED imefungwa kwa umbo la mraba. Isipokuwa imeainishwa vinginevyo, vipimo vyote vinatolewa kwa milimita, na uvumilivu wa kawaida ni ±0.2mm. Vipimo vya kimwili ni jambo muhimu katika mpangilio wa PCB na ujumuishaji katika bidhaa ya mwisho.

5.2 Recommended PCB Land Pattern

Detailed land pattern graphics for the printed circuit board (PCB) are provided. Adhering to these recommended land dimensions and spacing is crucial for achieving reliable solder joints, proper heat transfer, and mechanical stability. The land specification tolerance is ±0.1mm.

5.3 Polarity Marking

The datasheet contains markings or diagrams indicating the anode and cathode connections. Correct polarity must be observed during assembly to prevent damage.

6. Soldering and Assembly Guide

6.1 Mkunjo Ushauri wa Reflow Soldering

A detailed reflow soldering profile for lead-free solder assembly is specified. Key parameters include:

• Kiwango cha juu cha joto (Tp): Hadi 260°C (inapendekezwa 245°C).
• Muda juu ya mstari wa kioevu (217°C): Sekunde 60-150.
• Joto la kujipasha joto: 150-200°C, kwa sekunde 60-120.
• Kasi ya juu ya kupanda joto na kasi ya kupungua joto imefafanuliwa ili kupunguza mkazo wa joto.

Muda wa jumla kutoka 25°C hadi kiwango cha juu cha joto haupaswi kuzidi dakika 8. Urejeshaji wa solder unapaswa kufanyika mara tatu kwa kiwango cha juu.

6.2 Uchomeaji wa Mikono

Ikiwa uchomaji wa mkono ni lazima, joto la ncha ya chuma la kuchomea halipaswi kuzidi 300°C, wakati wa mgusano unapaswa kuwekwa kikomo hadi sekunde 2 kwa upeo, na operesheni ifanyike mara moja tu.

6.3 Usafishaji

Ikiwa usafishaji unahitajika baada ya ununuzi, tumia tu kutengenezea kama vile isopropanoli. Kemikali zisizotajwa za kusafisha zinaweza kuharibu kifurushi cha LED.

6.4 Njia ya Kuendesha

LED ni kifaa kinachoendeshwa na mkondo. Ili kuhakikisha mwanga unaotolewa ni sawa wakati LED nyingi zimeunganishwa, ziongozwe kwa usanidi wa mfululizo, au tumia kirekebishi cha mkondo kwa kila tawi linalofanana. Inapendekezwa sana kutumia kiendesha cha mkondo thabiti, badala ya chanzo cha voltage thabiti.

7. Ufungaji na Taarifa za Kuagiza

7.1 Ufungaji wa Mkanda na Reel

LED zinapatikana katika mfumo wa reel ya mkanda ulioinuliwa kwa ajili ya usanikishaji wa kiotomatiki. Vipimo muhimu vya ufungaji ni pamoja na:

• Ukubwa wa reel: Inchi 7.
• Idadi ya juu kwa kila reel: Vipande 500.
• Idadi ya chini ya ufungaji: Kuanzia vipande 100 vilivyobaki.
• Mkanda wa kubeba umeandikishwa kwa kifuniko cha juu.
• Ufungaji unalingana na kiwango cha EIA-481-1-B.

Maelezo ya kina ya vipimo vya mfereji wa mkanda na reel hutolewa kwenye hati ya maelezo ya kiufundi.

8. Mapendekezo ya Matumizi

8.1 Mazingira ya Kawaida ya Matumizi

• Kuua vimelea kwenye uso:Kuunganishwa kwenye vifaa vinavyotumika kuua vimelea kwenye simu, zana, au juu ya meza.
• Usafishaji wa maji:Kutumika katika mifumo ya usindikaji wa maji ya mahali pa matumizi au mahali pa kuingiza maji, ili kuzima bakteria na virusi.
• Kuua vimelea hewani:Kutekelezwa katika mifumo ya HVAC, visafishaji hewa, au vifaa vya kuua vimelea vya nafasi ya juu.
• Uvukuzaji wa Vifaa vya Matibabu:Kutumika kwa uvukuzaji wa vyumba vya ndani vya vifaa au zana.

8.2 Mazingatio ya Ubunifu

• Usimamizi wa Joto:Kwa kuwa upinzani wa kawaida wa joto ni 16.8 K/W, muundo unaofaa wa kifaa cha kupoeza joto (kwa kuzingatia MCPCB) ni muhimu ili kuweka halijoto ya kiungo ndani ya mipaka na kuhakikisha pato la muda mrefu la mionzi.
• Optical Design:A viewing angle of 120 degrees may require reflectors or lenses to collimate or efficiently direct UVC light to the target area.
• Electrical Design:Use a constant current driver suitable for the forward voltage range (5.2V-7.7V) and capable of providing up to 300mA current. Consider binning in multi-LED designs.
• Material Compatibility:Ensure that housing materials exposed to UVC radiation are resistant to degradation (e.g., some plastics may yellow or become brittle).
• Safety:UVC radiation is harmful to eyes and skin. The design must incorporate appropriate shielding, interlocks, and warnings to prevent human exposure.

9. Uthabiti na Upimaji

9.1 Mpango wa Upimaji wa Uthabiti

The product undergoes a series of comprehensive reliability tests to ensure robustness under various stress conditions. Key tests include:

• Room Temperature Operating Life (RTOL):3,000 hours at 250mA and 1,000 hours at the maximum current of 300mA.
• High/Low Temperature Storage Life (HTSL/LTSL):1,000 hours at 100°C and -40°C, respectively.
• Wet High Temperature Storage Life (WHTSL):1,000 hours at 60°C and 90% relative humidity.
• Thermal Shock (TS):100 cycles between -30°C and 85°C.

All operational life tests were conducted with the LED mounted on the specified metal heat sink.

9.2 Viwango vya Kufeli

A device is considered to have failed if, after testing and measurement at 250mA, its forward voltage increases by more than 10% from the initial value, or its radiant flux drops below 50% of the initial measurement.

10. Technical Comparison and Advantages

Compared to traditional germicidal lamps (e.g., low-pressure mercury lamps emitting 254nm), this UVC LED offers several significant advantages:

• Instant On/Off:LEDs can achieve full output immediately, unlike fluorescent tubes which require warm-up time.
• Compact Size and Design Freedom:The small form factor allows for integration into portable and space-constrained devices.
• Durability and Lifetime:The solid-state construction makes them more resistant to vibration and physical shock. While lifetime data is provided via reliability testing, LEDs typically offer a longer operational life than conventional tubes with proper thermal management.
• Mercury-Free:Contains no hazardous mercury, simplifying disposal and enhancing environmental safety.
• Wavelength Flexibility:Urefu wa kilele wa 274nm una ufanisi dhidi ya vimelea mbalimbali. Wigo nyembamba unaruhusu matumizi yaliyolengwa bila mionzi isiyohitajika.
• Gharama za uendeshaji za chini:Ufanisi wa juu na maisha marefu yanasaidia kupunguza gharama za nishati na ubadilishaji kwa muda mrefu.

11. Frequently Asked Questions (Based on Technical Parameters)

Swali: Ni mkondo wa kawaida wa uendeshaji wa LED hii ni upi?
Jibu: Tabia za optoelektroniki zimebainishwa kwa 250mA, ambayo ni sehemu ya kawaida ya uendeshaji. Mkondo wa juu kabisa ni 300mA.

Swali: Je, ninawezaje kuhakikisha kuwa LED nyingi zina mwangaza sawa?
A: Tumia habari za kikundi. Chagua LED kutoka kikundi kimoja cha mtiririko wa mnururisho (Φe) (mfano X2), na uziendeshe kwa mkondo sawa, kwa upendeleo kwa usanidi wa mfululizo au utoaji wa udhibiti wa mkondo tofauti kwa safu sambamba.

Q: Kwa nini usimamizi wa joto ni muhimu sana kwa LED hii?
A: Kama inavyoonyeshwa na mkunjo wa "Mtiririko wa Mnururisho wa Jamaa dhidi ya Joto la Kiungo," pato la mwanga hupungua kwa kiasi kikubwa kadiri joto linavyoongezeka. Kuzidi joto la juu kabisa la kiungo (105°C) pia kunaweza kusababisha kuzeeka kwa kasi na kushindwa mapema. Upunguzaji sahihi wa joto ni muhimu kwa utendaji na uaminifu.

Q: Naweza kutumia chanzo cha umeme cha voltage thabiti kuendesha LED hii?
A: Hairushishiwi. LED ni vifaa vinavyoendeshwa na mkondo. Kwa sababu ya sifa za kielelezo za I-V za diode, mabadiliko madogo ya voltage ya mbele (kama inavyoonyeshwa na kikundi cha Vf) yanasababisha mabadiliko makubwa ya mkondo, na kusababisha tofauti katika pato na uharibifu unaowezekana wa mkondo kupita kiasi. Hakikisha unatumia kiendeshi cha mkondo thabiti.

Q: Ni nyenzo gani salama kutumia karibu na dirisha la pato la LED?
A: Mnururisho wa UVC unaweza kuharibu vifaa vingi vya kikaboni. Kwa lenzi, madirisha, na sehemu za kifuniko kwenye njia ya mwanga, tumia nyenzo zinazostahimili UVC, kama aina fulani za kioo cha quartz, PTFE (Teflon), au plastiki maalum iliyotulizwa kwa UVC.

12. Design and Application Case Studies

Scenario: Design a portable water sterilization bottle.
A designer is creating a reusable water bottle integrated with UVC sterilization. The LTPL-G35UVC275PR is selected for its compact size and 274nm output.
Implementation Plan:
1. Electrical Design:A small rechargeable lithium battery powers a boost converter/constant current driver, which is set to 250mA to drive an LED connected in series with the driver.
2. Thermal Design:The LED is mounted on a custom aluminum-based MCPCB, which is thermally connected to the inner metal wall of the bottle cavity, utilizing it as a passive heat sink.
3. Optical Design:The water is directly irradiated by the 120-degree beam of the LED. A reflective coating on the chamber wall improves uniformity.
4. Safety Design:The circuit includes a timer to ensure sufficient dosage is delivered (e.g., 60 seconds). A mechanical interlock prevents LED activation when the cap is not fully sealed, and the chamber is opaque to block UVC leakage.
5. Component Selection:LEDs from the X2 or X3 luminous flux bin are selected to guarantee minimum radiant output, and the driver specifications must accommodate the V1-V5 voltage range.

13. Introduction to Principles

Diodi zinazotoa mwanga wa UVC zinafanya kazi kulingana na kanuni ya umeme-kwa-mwanga katika nyenzo za semiconductor. Wakati voltage chanya inatumika kwenye kiunganishi p-n, elektroni na mashimo hujumuika na kutolea nishati kwa njia ya fotoni. Urefu wa wimbi la fotoni hizi huamuliwa na nishati ya pengo la bendi la nyenzo za semiconductor. Kwa utoaji wa UVC (200-280nm), nyenzo kama vile AlGaN hutumiwa. Uchanganuzi maalum wa safu ya AlGaN umeundwa ili kutoa kilele cha utoaji cha 274nm, ambacho kinalingana na nishati ya fotoni ya takriban elektroni-volti 4.52 (eV). Mwanga huu wa ultraviolet wenye nishati nyingi unachukuliwa na DNA na RNA ya vijidudu, na kusababisha uundaji wa dimeri za thymine, na hivyo kuharibu uigaji na kusababisha usimamishaji au kifo cha seli, na kutoa athari ya kuua bakteria.

14. Mwelekeo wa Maendeleo

Uwanja wa UVC LED unakua kwa kasi. Mwelekeo muhimu unaoweza kutambuliwa kutoka kwa maelezo haya ya kiufundi na soko pana zaia ni pamoja na:

• Nguvu ya pato inayoongezeka:Vifaa kama vile LTPL-G35UVC275PR vyenye pato la miliwati kadhaa, vinawakilisha maendeleo kutoka kwa vizazi vya awali vya nguvu ya chini. Lengo la maendeleo ya kuendelea ni kupata mtiririko mkubwa wa mnururisho kutoka kwa kifurushi kimoja.
• Ufanisi (ubadilishaji wa umeme-kwa-mwanga) unaoongezeka:Utafiti umelenga kupunguza voltage chanya na kuongeza ufanisi wa quantum wa nje (uwiano wa fotoni za pato kwa elektroni za pembejeo), ili kupunguza matumizi ya nguvu na mzigo wa joto.
• Uaminifu na Uimarishaji wa Maisha:Uvumbuzi endelevu wa sayansi ya nyenzo na ufungaji unalenga kupanua zaidi maisha ya kazi, na kufanya UVC LED ziwe na ushindani zaidi ikilinganishwa na taa za jadi katika matumizi yenye uwiano wa juu wa kazi.
• Kupunguza Gharama:Kadri uzalishaji unavyoongezeka na michakato inavyokomaa, gharama kwa kila miliwati ya pato la UVC inatarajiwa kupungua, na hivyo kufungua njia kwa matumizi mapya ya soko kuu.
• Uboreshaji wa Wavelength:Utafiti unaendelea kuchunguza wavelength bora zaidi ya kuzamisha vimelea maalum (k.m., virusi na bakteria), na kukuza LED zinazotoa katika wavelength hizi bora.

Mienendo hii inasukumia kupitishwa kwa teknolojia ya UVC ya hali thabiti katika nyanja zinazopanuka za matumizi ya kuua vijidudu na usafishaji.