UVC LED LTPL-G35UV275PB Datasheet - 3.5x3.5x1.05mm - Typical Voltage 6.0V - Peak Wavelength 275nm - Typical Radiant Flux 16mW - Technical Documentation

1. Product Overview

The LTPL-G35UV product series represents a revolutionary high-efficiency light source, specifically designed for sterilization, disinfection, and medical applications. This technology combines the inherent long lifespan and high reliability of light-emitting diodes with performance characteristics sufficient to replace traditional ultraviolet light sources. It offers significant design freedom, opening new opportunities for the application of solid-state UVC solutions in harsh environments.

Key features of this product include compatibility with integrated circuits, compliance with RoHS environmental standards (lead-free), and the potential for lower operational and maintenance costs compared to traditional UV technologies such as mercury lamps.

1.1 Core Advantages and Target Market

Faida kuu ya LED hii ya UVC iko katika hali yake thabiti, inayomaanisha inaweza kuwashwa na kuzimwa papo hapo, haihitaji muda wa joto kabla ya kutumika, na haina vitu hatari kama vile zebaki. Soko lengwa linalenga matumizi yanayohitaji mionzi sahihi, ya kuaminika na salama ya ultravioleti. Hii inajumuisha, lakini sio tu: mifumo ya kuua vijidudu kwenye vyombo vya matibabu, vifaa vya kusafisha hewa na maji, na vifaa vya uchambuzi katika taaluma za sayansi ya uhai na huduma za afya. Bidhaa hii imebuniwa kwa wahandisi na waunganishaji wa mifumo wanaounda suluhisho za kisasa za kuua vijidudu, ambazo zinahitaji umbo kompakt, udhibiti wa kidijitali na usalama ulioimarika.

2. Form and Mechanical Dimensions

LED hii inatumia muundo wa kompaktifu wa kushikamana na uso. Vipimo vyote muhimu vinatolewa kwa milimita, na uvumilivu wa kawaida ni ±0.2mm, isipokuwa ikitajwa vinginevyo. Umbo la kimwili ni muhimu sana kwa upangaji wa PCB na muundo wa usimamizi wa joto, ili kuhakikisha usawaziko sahihi, ufungaji, na upitishaji wa joto kutoka kwenye kiungo cha chip hadi kwenye alama ya kuunganisha na bodi ya mzunguko wa kuchapishwa.

3. Absolute Maximum Ratings

These ratings define the stress limits that may cause permanent damage to the device. Operation at or beyond these limits is not guaranteed and should be avoided to ensure reliable performance.

• Power Dissipation (P_O):1.05 W
• Direct forward current (I_F):150 mA
• Operating temperature range (T_opr):-40°C to +80°C
• Storage temperature range (T_stg):-40°C to +100°C
• Junction Temperature (T_j):115°C

Important Notice:Uendeshaji wa LED chini ya hali ya upendeleo wa nyuma kwa muda mrefu unaweza kusababisha uharibifu au kutofaulu kwa kifaa. Katika matumizi ambayo yanaweza kujitokeza voltage ya nyuma, inashauriwa kutumia hatua zinazofaa za ulinzi wa mzunguko (k.m., diode inayofuatana au TVS).

4. Electro-Optical Characteristics

Vigezo hivi vinapimwa wakati joto la mazingira (T_a) ni 25°C, na vinafafanua utendaji wa kawaida wa kifaa chini ya hali maalum za majaribio.

Maelezo ya Kipimo:
1. Mwendo wa mnururisho ni pato la jumla la nguvu ya mwanga iliyopimwa kwa kutumia tufe ya jumlishi.
2. Uvumilivu wa kipimo cha voltage ya mbele ni ±0.1V.
3. Toleransi ya kipimo cha urefu wa wimbi la kilele ni ±3nm.
4. Toleransi ya kipimo cha mtiririko wa mnururisho ni ±10%.
5. Thamani ya upinzani wa joto inarejelea kipimo kilichopimwa kwa kutumia PCB ya msingi wa metali ya alumini (MCPCB) ya 2.0cm x 2.0cm x 0.17cm.

5. Grading Codes and Classification Systems

LED zimegawanywa katika makundi kulingana na utendaji ili kuhakikisha uthabiti. Msimbo wa kikundi unawekwa kwenye kila mfuko wa ufungashaji.

5.1 Voltage ya mbele (V_F) Grading

The tolerance for each grade is ±0.1V.

5.2 Radiant Flux (Φ_e) Grading

Toleransi ya kila safu ni ±10%.

5.3 Urefu wa wimbi la kilele (λ_P) Grading

Toleleo ya kila safu ni ±3nm.

6. Typical Performance Curves and Analysis

Mviringo ufuatao unaonyesha tabia ya kifaa chini ya hali tofauti za umeme na joto (isipokuwa imebainishwa, zote zilipimwa kwenye halijoto ya mazingira ya 25°C).

6.1 Usambazaji wa Mwanga wa Jamaa

This curve shows the emission spectrum centered at the peak wavelength (e.g., 275nm). The spectrum of an LED is typically narrow, which is beneficial for targeting specific photochemical reactions in disinfection without emitting unnecessary or harmful wavelengths.

6.2 Muundo wa Mionzi (Mtazamo)

The radiation pattern illustrates the angular distribution of light intensity. A typical 120° viewing angle (2θ_1/2) indicates a Lambertian or wide-beam pattern, which is very useful for uniformly illuminating surfaces at close range.

6.3 Relative Radiant Flux vs. Forward Current

This graph illustrates the relationship between drive current and light output. Radiant flux typically increases with current, but at higher currents, it exhibits sublinear growth due to efficiency droop and increased junction temperature. This curve is crucial for determining the optimal operating point that balances output and lifetime.

6.4 Forward Voltage vs. Forward Current

The I-V curve shows a typical exponential relationship of a diode. The forward voltage increases with the current. Understanding this curve is crucial for designing a suitable constant current driver to ensure stable operation.

6.5 Relative Radiant Flux vs. Junction Temperature

Hii ni mkunjo muhimu wa usimamizi wa joto. Ufanisi wa UVC LED hupungua kadri halijoto ya kiungo kinavyoongezeka. Mchoro huu unapima upungufu huu, na unasisitiza umuhimu wa upotezaji bora wa joto kudumisha pato la juu na maisha marefu ya kifaa.

6.6 Forward Voltage vs. Junction Temperature

Voltage ya mbele kwa kawaida ina mgawo hasi wa joto (hupungua kadri halijoto inavyoongezeka). Tabia hii wakati mwingine inaweza kutumika kwa ufuatiliaji wa joto wa wastani.

6.7 Forward Current Derating Curve

Mkunjo huu unafafanua uhusiano wa kazi kati ya mkondo wa juu unaoruhusiwa wa mbele na joto la mazingira au joto la kifuniko. Ili kuzuia kuzidi joto la juu la kiungo (115°C), ni muhimu kupunguza mkondo wa kuendesha wakati wa kufanya kazi katika hali ya joto la juu la mazingira. Kufuata mkunjo huu ni sharti la kuhakikisha utendakazi unaoaminika.

7. Upimaji wa Kudumu na Viwango

Mpango kamili wa uchunguzi wa kudumu umehakikisha utendaji wa muda mrefu na uthabiti wa LED.

7.1 Masharti ya Upimaji

Note: In the operational life test, the LED was mounted on a 90x70x4mm aluminum heat sink.

7.2 Vigezo vya Kukosa Kazi

Baada ya upimaji, kifaa hutathminiwa kulingana na vigezo vifuatavyo:
- Forward voltage (V_F):When measured at I_F= 100mA, the variation shall not exceed +10% of the initial value.
- Radiant flux (Φ_e):When measured at I_F= 100mA, the output shall not be less than 50% of the initial value.

8. Mwongozo wa Usanikishaji na Uendeshaji

8.1 Mkunjo wa Joto Unapendekezwa wa Reflow Soldering

Kwa usanikishaji usio na risasi, mkunjo wa joto ufuatao unapendekezwa ili kuzuia uharibifu wa joto kwa kifurushi cha LED.

• Kiwango cha wastani cha kuongezeka kwa joto (T_Lhadi T_P):Kiwango cha juu zaidi 3°C/s
• Upashio wa awali:150°C hadi 200°C, kwa muda wa sekunde 60-120 (t_S)
• Muda juu ya mstari wa kioevu (T_L=217°C):Sekunde 60-150 (t_L)
• Joto la kilele (T_P):Maximum 260°C (Recommended 245°C)
• Time within ±5°C of peak temperature (t_P):10-30 seconds
• Cooling rate:Kiwango cha juu cha 6°C/s
• Muda wa jumla (kutoka 25°C hadi kilele):Kiwango cha juu cha dakika 8

8.2 PCB Pad Layout Recommendations

Provides recommended footprint dimensions for surface mount pads to ensure good solder joint formation and mechanical stability. The tolerance for this pad specification is ±0.1mm.

8.3 Packaging: Tape and Reel Specifications

LEDs are packaged in embossed carrier tape and reel, suitable for automated assembly.
- Reel size: 7 inches.
- Maximum quantity per reel: 500 pieces (minimum packaging for remainder is 100 pieces).
- Packaging conforms to EIA-481-1-B specification.
- Empty positions are sealed with cover tape.
- Inaruhusiwa kukosekana kwa vipengele viwili mfululizo kwa kiwango cha juu.

9. Vidokezo Muhimu na Maelezo ya Utumiaji

9.1 Usafi

Ikiwa utahitaji kusafisha baada ya kuchomea, tumia tu vimumunyisho vya aina ya pombe, kama vile isopropanol. Vimumunyisho vya kemikali visivyobainishwa vinaweza kuharibu nyenzo za ufungaji wa LED (k.m. lenzi au gundi ya ufungaji) na kupunguza utendakazi au uaminifu.

9.2 Njia za Kuendesha na Tahadhari za Jumla

LED ni vifaa vinavyoendeshwa kwa mkondo. Lazima zitumie chanzo cha mkondo thabiti sio chanzo cha voltage thabiti ili kuhakikisha pato la mwanga thabiti na kuzuia kupoteza joto kwa kupindukia. Mzunguko wa kuendesha unapaswa kubuniwa na utendakazi wa ulinzi wa kuzuia mkondo wa mawimbi na kuzuia mabadiliko ya ghafla ya umeme (ESD, mawimbi).

Uangalizi wa ziada wa kufunga kwa kutumia chuma cha kuuzi:
1. Inaweza kufungwa kwa mikono kwa kutumia chuma cha kuuzi, joto la ncha ya chuma cha kuuzi si zaidi ya 300°C, kila pedi ya kuuza inaweza kufungwa mara moja tu, muda wa kufunga usizidi sekunde mbili.
2. Kufunga kwa kutumia chuma cha kuuzi kwa njia ya reflow kunaweza kufanyika mara tatu tu.
3. All temperature specifications refer to the temperature at the top surface of the package.
4. Rapid cooling from peak temperature is not recommended.
5. It is always advisable to use the lowest possible soldering temperature that will form a reliable solder joint.
6. Wave soldering is not a recommended or guaranteed assembly method for this component.

10. Uchunguzi wa Kina wa Kiufundi na Mazingatio ya Ubunifu

10.1 Uhitaji wa Usimamizi wa Joto

Thermal Resistance from Junction to Solder Point (R_{th j-s}The typical value is 30 K/W. For UVC LEDs, effective heat dissipation is essential. The high photon energy generated by UVC produces significant heat at the semiconductor junction. Without proper heat dissipation, the junction temperature will rise, leading to accelerated lumen depreciation, wavelength shift, and ultimately catastrophic failure. Designers must use suitable MCPCBs or other thermal management strategies to keep the T_jmaintained well below the maximum of 115°C, ideally at 80°C or lower, to achieve maximum lifespan.

10.2 Ubunifu wa Mwanga kwa Ufanisi wa Kuua Vimelea

The peak wavelength of 275nm falls within the effective germicidal range (approximately 260nm-280nm), where DNA/RNA absorption is high. The relevant metric is radiant flux (mW), not luminous flux (lm). System design must ensure the target surface receives the required UV dose (in J/m² or mJ/cm²), which is the product of irradiance (W/m²) and exposure time. A wide 120° viewing angle aids uniform coverage but reduces peak irradiance at a specific distance. For applications requiring focus, secondary optics may be necessary.

10.3 Electrical Interface and Drive Selection

Voltage ya kawaida ya mwelekeo mzuri kwenye 100mA ni 6.0V, LED hii inahitaji kiongozi kinachoweza kutoa hadi 150mA ya mkondo thabiti wa mara kwa mara na voltage ya utiifu juu ya 7.0V. Kwa kuzingatia mgawo hasi wa joto wa V_F, kizuizi rahisi cha upinzani wa mkondo hakitoshi na ni hatari, kwani kinaweza kusababisha kukimbia kwa joto. IC maalum ya kuendesha LED au saketi ya mkondo wa mara kwa mara ya mstari/hali ya kubadili iliyosanidiwa vyema ni muhimu sana. Kiongozi pia kinapaswa kujumuisha kuanza laini na ulinzi dhidi ya voltage kupita kiasi.

10.4 Material Compatibility and Safety

UVC radiation at 275nm possesses extremely high energy and can degrade many organic materials, including plastics, adhesives, and wire insulation used in assemblies. All materials within the optical path and near the LED must be resistant to UVC exposure. Furthermore, UVC is harmful to human skin and eyes. Any final product must incorporate adequate shielding, interlock systems, and warning labels to ensure user safety and comply with relevant laser product or light safety standards (e.g., IEC 62471).

11. Ulinganisho na Teknolojia ya Ultraviolet ya Kawaida

Compared to traditional UV light sources such as low-pressure mercury lamps, the LTPL-G35UV275PB offers significant advantages:
Advantages:
- Instant On/Off:No warm-up or cool-down time required, supports pulsed operation.
- Compact and Robust:Solid-state construction, no fragile glass tubes or filaments.
- Bila zebaki:Kirafiki, epuka matatizo ya usindikaji wa vitu hatari.
- Upekee wa urefu wa wimbi:Mwanga nyembamba unalenga ufanisi wa kuua vijidudu, bila UV-A/UV-B ya ziada.
- Udhibiti wa kidijitali:Rahisi kudim mwanga, na unaweza kuunganishwa kwa urahisi katika mifumo ya udhibiti wa kisasa.
Mambo ya kuzingatia:
- Higher initial cost per mW:Although the total cost of ownership may be lower.
- Thermal management:Ikilinganishwa na baadhi ya taa za jadi, inahitaji muundo wa joto unaoendelea zaidi.
- Mfumo wa optiki:Kutokana na eneo dogo la mwanga na muundo tofauti wa mionzi, inaweza kuhitaji muundo tofauti wa optiki.

12. Mandhari ya Utumizi na Mifano ya Matumizi

• Usafi wa Uso:Ijumishwe kwenye vifaa vinavyotumika kusafisha vifaa vya matibabu, skrini za simu mahiri, au nyuso zinazoguswa mara kwa mara katika hospitali na maeneo ya umma.
• Usafishaji wa Maji:Inatumika kwenye vifaa vya usafishaji wa maji vya mwisho au vya mtandaoni, huzuia bakteria na virusi bila kutumia kemikali.
• Uvunja-Virusi wa Hewa:Inayowekwa katika mfumo wa HVAC au vifaa vya kusafisha hewa vinavyobebeka, kushughulikia hewa inayozunguka.
• Vifaa vya Sayansi ya Maisha:Kutoa mnururisho wa mionzi ya ultraviolet kwa vituo vya PCR, kabati za usalama wa kibayolojia, au vifaa vya kuvuka-unganisha.
• Bidhaa za Matumizi ya Kawaida:Kisafishaji kompaktiki cha vitu vya kibinafsi kama vile mswaki, chupa ya maziwa au barakoa (kinahitaji kifuniko sahihi cha usalama).

13. Maswali Yanayoulizwa Mara kwa Mara (FAQ)

Swali: Urefu wa maisha unaotarajiwa wa LED hii ya UVC ni upi?
Jibu: Maisha kwa kawaida hufafanuliwa kama idadi ya masaa ya uendeshaji ambapo mtiririko wa mnururisho hupungua hadi 50% (L50). Hii inategemea kwa kiasi kikubwa na mkondo wa kuendesha na joto la kiungo. Chini ya mkondo wa kawaida wa 100mA, pamoja na usimamizi mzuri wa joto (T_jya chini), maisha yanaweza kuzidi masaa 10,000, kuzidi kwa kiasi kikubwa vyanzo vingi vya jadi vya mnururisho wa ultravioleti.

Swali: Je, naweza kuendesha LED hii kwa kutumia chanzo cha umeme cha 5V?
A: Hapana. Voltage ya kawaida ya mbele ni 6.0V, inaweza kufikia hadi 7.0V. Usambazaji wa umeme wa 5V hauwezi kuwasha LED kikamilifu. Inahitaji kutumia kibadilishaji cha kuongeza voltage au kiendeshi chenye voltage ya pato ya juu zaidi.

Q: Je, ninawezaje kufasiri msimbo wa kugawa darasa wakati wa kuagiza?
A: Kulingana na mahitaji ya matumizi yako kwa usawa wa voltage, nguvu ya pato na urefu wa wimbi halisi, taja V inayohitajika_FKugawa darasa (V1-V4), Φ_eBinning (X1-X3) and λ_PBinning (W1). This ensures the LEDs you receive have tightly grouped characteristics.

Q: Is the light output visible?
A: No, it is not visible. 275nm UVC radiation is outside the visible spectrum (400-700nm). The LED may emit a very faint blue/purple light due to weak secondary emission, but the primary germicidal output is invisible.Uwepo huu usioonekana hufanya kuwa muhimu zaidi kwa kufunga salama.