SMD3528 Blue LED Datasheet - Girman 3.5x2.8mm - Ƙarfin Wutar Lantarki 3.2V - Ƙarfin Wuta 0.144W - Takardun Fasaha na Hausa

1. Bayanin Samfur Wannan takarda tana ba da cikakkun ƙayyadaddun fasaha na LED shuɗi guda ɗaya a cikin kayan SMD3528. Wannan na'urar da aka haɗa a saman (SMD) an tsara ta don hasken gama gari, hasken baya, da aikace-aikacen nuna alama waɗanda ke buƙatar tushen haske shuɗi mai dogaro da inganci. Babban fa'idar wannan ɓangaren yana cikin daidaitaccen kayan sa, daidaitattun sigogi na aiki, da tsarin rarrabe (binning) da aka fayyace, wanda ke tabbatar da halin da ake iya hasashen a cikin ƙirar da'ira.

2. Zurfin Fassarar Ma'anar Sigogi na Fasaha Sashe mai zuwa yana cikakken bayanin matsakaicin ma'auni na cikakke da halayen lantarki/na gani na yau da kullun na LED. Ana auna duk sigogi a daidaitaccen yanayin gwaji na T

= 25°C.

2.1 Matsakaicin Ma'auni na Cikakke_sƘarfin Wutar Lantarki na Gaba (I

):

• 30 mA (Ci gaba)_FƘarfin Wutar Lantarki na Gaba na Pulse (I):
• 40 mA (Faɗin Pulse ≤ 10ms, Tsarin Aiki ≤ 1/10)_FPRushewar Wuta (P):
• 144 mW_DZazzabin Aiki (Topr
• ):_{-40°C zuwa +80°C}Zazzabin Ajiya (Tstg
• ):_{-40°C zuwa +80°C}Zazzabin Haɗin (T):
• 125°C_jZazzabin Solder (Tsld
• ):_{Solder reflow a 200°C ko 230°C na dakika 10.}2.2 Matsakaicin Sigogi na FasahaAn auna a ƙarfin wutar lantarki na gaba (I

) na 20 mA.

Ƙarfin Wutar Lantarki na Gaba (V_F):

• Matsakaicin 3.2 V, Matsakaicin 3.6 V_FƘarfin Wutar Lantarki na Baya (V):
• 5 V_RTsawon Zango Mai Rinjaye (λ):
• 460 nm_dƘarfin Wutar Lantarki na Baya (I):
• Matsakaicin 10 µA_RKusurwar Dubawa (2θ1/2
• ):_120°3. Bayanin Tsarin Rarrabe (Binning) Ana rarraba samfurin zuwa rarrabuwa (bins) bisa mahimman sigogi na aiki don tabbatar da daidaito. Lambobin rarrabuwa wani ɓangare ne na lambar samfurin.3.1 Rarrabe Ƙarfin Haske (Luminous Flux Binning) Ana auna ƙarfin haske a I

= 20 mA. Rangwame don aunin ƙarfin haske shine ±7%.

Lamba

Mafi ƙanƙanta (lm)

Matsakaicin (lm)_FA2

B3

B4

Lambar Kayan (misali, 32):

Yana nuna kayan SMD3528.

'00' don babu ruwan tabarau, '01' don tare da ruwan tabarau.

Launi:T [Package Code] [Chip Count] [Lens Code] [Internal Code] - [Flux Code] [Wavelength Code].

• An ayyana shi da harafi (B don Shuɗi).4. Bincike na Lankwasa Ayyuka (Performance Curve) Lankwasan halaye suna kwatanta dangantakar tsakanin mahimman sigogi, wanda yake da mahimmanci ga sarrafa zafi da da'irar tuƙi.
• 4.1 Ƙarfin Wutar Lantarki na Gaba vs. Ƙarfin Wutar Lantarki na Gaba (Lankwasa I-V) Lankwasa I-V tana nuna dangantakar exponential na yau da kullun na diode. Ƙarfin wutar lantarki na gaba yana ƙaruwa tare da ƙarfin wutar lantarki. Dole ne masu ƙira su tabbatar da da'irar tuƙi tana ba da isasshen sararin samaniya na ƙarfin wutar lantarki, musamman la'akari da yaduwar rarrabuwar ƙarfin wutar lantarki, don cimma ƙarfin wutar lantarki da ake so ba tare da wuce matsakaicin ma'auni ba.4.2 Dangantakar Ƙarfin Haske vs. Ƙarfin Wutar Lantarki na Gaba Wannan lankwasa tana nuna cewa fitar da haske yana ƙaruwa tare da ƙarfin wutar lantarki amma bazai zama daidai daidai ba, musamman a ƙarfin wutar lantarki mafi girma. Yin aiki sama da shawarar 20mA na iya haifar da raguwar riba cikin inganci da ƙara zazzabin haɗin, wanda zai iya shafar tsawon rai.
• 4.3 Dangantakar Ƙarfin Makamashi na Gani vs. Zazzabi na Haɗin (Junction Temperature) Jadawalin yana nuna cewa yayin da zazzabin haɗin ya tashi daga 25°C zuwa 125°C, fitar da ƙarfin makamashi na gani yana raguwa. Wannan yana nuna mahimmancin sarrafa zafi a cikin ƙirar aikace-aikace don kiyaye daidaitaccen fitar da haske da kwanciyar hankali na launi a tsawon rayuwar samfurin.4.4 Rarraba Ƙarfin Makamashi na Gani (Spectral Power Distribution) Lankwasa na gani ta tabbatar da fitarwa mai kololuwa a kusa da tsawon zango mai rinjaye na 460nm, halayen chip na LED shuɗi na InGaN. Ƙunƙuntaccen bandwidth shine na yau da kullun don LED mai launi ɗaya.
• 5. Bayanin Injiniya da Kayan Tufafi (Packaging)5.1 Girman Bayyanar (Outline Dimensions) Kayan SMD3528 suna da girman ƙima na 3.5mm (tsayi) x 2.8mm (faɗi). An ba da cikakken zanen girma tare da rangwame (misali, .X: ±0.10mm, .XX: ±0.05mm) don ƙirar sawun PCB.

5.2 Tsarin Gado Mai Ba da Shawara da Ƙirar Stencil An ba da cikakken tsarin ƙasa (sawu) da ƙirar man solder stencil don tabbatar da ingantaccen solder da daidaitawa yayin aikin Haɗawa na Saman Kayan (SMT). Yin bin waɗannan shawarwari yana da mahimmanci don cimma haɗin solder mai dogaro da mafi kyawun canja wurin zafi daga LED zuwa PCB.

5.3 Gano Polarity Ana yiwa cathode alama a kan kayan LED, sau da yawa tare da launin kore akan ruwan tabarau ko tsaga/ɓangarori a kusurwa ɗaya na jikin filastik. Zanen tsarin gado yana nuna filayen anode da cathode a sarari.

6. Jagororin Solder da Haɗawa (Assembly)

6.1 Sigogi na Solder Reflow An ƙididdige LED don daidaitattun hanyoyin solder reflow. Matsakaicin zazzabin jiki yayin solder bai kamata ya wuce 200°C na dakika 10 ko 230°C na dakika 10 ba. Yana da mahimmanci a bi shawarar yanayin zazzabin da aka ba da shawara don hana lalata cikin gida da kayan ruwan tabarau na epoxy.

6.2 Kula da Sarrafawa da Ajiya Ajiye a cikin yanayi mai bushewa, mai hana tashin hankali a cikin kewayon zazzabin da aka ƙayyade (-40°C zuwa +80°C). A guji matsin injiniya akan ruwan tabarau. Yi amfani da shi cikin watanni 12 na ranar ƙirƙira a ƙarƙashin sharuɗɗan ajiya da aka ba da shawara don tabbatar da iya solder.

7. Bayanin Kayan Tufafi da Oda

7.1 Ƙayyadaddun Kaset da Reel Ana ba da LED ɗin akan kaset ɗin mai ɗaukar kaya da aka nannade akan reels, wanda ya dace da injunan zaɓe da sanyawa ta atomatik. An ƙayyade mahimman girmansu na kaset (girman aljihu, tazara) da ƙarfin cire murfin kaset da ake buƙata (0.1 - 0.7N a kusurwar digiri 10) don tabbatar da dacewa da kayan aikin SMT.

8. Shawarwari na Aikace-aikace

8.1 Yanayin Aikace-aikace na Yau da Kullun Hasken Baya: Don nunin LCD, maɓallan maɓalli, ko alamar alama. Nuna Matsayi: A kan kayan lantarki na mabukaci, kayan aiki, da kayan aikin masana'antu. Hasken Kayan Ado: A cikin hasken accent, hasken yanayi, ko fasalin gine-gine. Hasken Gabaɗaya: A matsayin ɓangare a cikin ƙirar LED, tsiri, ko kwan fitila, sau da yawa ana haɗa su da phosphors don ƙirƙirar farin haske.

8.2 Abubuwan da Ake Kula da Ƙira Iyakance Ƙarfin Wutar Lantarki: Koyaushe tuƙa LED tare da tushen ƙarfin wutar lantarki na akai-akai ko resistor mai iyakance ƙarfin wutar lantarki. Kada ku haɗa kai tsaye zuwa tushen ƙarfin wutar lantarki. Sarrafa Zafi: Ƙirƙiri PCB tare da isasshen yanki na tagulla ko ramukan zafi don watsar da zafi, musamman lokacin aiki kusa da matsakaicin ƙarfin wutar lantarki. Matsakaicin zazzabin haɗin yana haɓaka raguwar lumen. Kariya daga ESD: Ko da yake ba a bayyana a sarari a matsayin mai hankali sosai ba, aiwatar da kariyar ESD ta asali akan da'irar tuƙi kyakkyawan aiki ne don dogaro. Ƙirar Gani: Yi la'akari da kusurwar dubawa na digiri 120 lokacin ƙirar ruwan tabarau ko jagororin haske don aikace-aikacen da ake nufi.

9. Kwatancen Fasaha Idan aka kwatanta da LED na rami, SMD3528 yana ba da fa'idodi masu mahimmanci a cikin haɗawa ta atomatik, ceton sararin allo, da mafi kyawun aikin zafi saboda haɗin kai kai tsaye zuwa PCB. A cikin dangin SMD, kayan 3528 babban ma'auni ne mai girma kuma ana amfani da shi sosai, yana ba da daidaitaccen ma'auni na girman, fitar da haske, da farashi. Idan aka kwatanta da ƙananan kayayyaki kamar 3020 ko 3014, 3528 yawanci na iya ɗaukar ɗan ƙaramin ƙarfin wutar lantarki kuma yana iya samun mafi girman yanki mai haske. Idan aka kwatanta da manyan kayayyaki kamar 5050, ya fi ƙanƙanta.

10. Tambayoyin da Ake Yawan Yi (Dangane da Sigogi na Fasaha)

10.1 Menene ƙarfin wutar lantarki na aiki da ake ba da shawara? An ƙayyade sigogi na fasaha a 20mA, wanda shine daidaitaccen gwajin ƙarfin wutar lantarki kuma wurin aiki na gama gari don ingantaccen inganci da tsawon rai. Ana iya aiki da shi har zuwa matsakaicin cikakke na 30mA ci gaba, amma wannan zai haifar da ƙarin zafi kuma zai iya rage tsawon rai.

10.2 Ta yaya zan zaɓi resistor mai iyakance ƙarfin wutar lantarki daidai? Yi amfani da Dokar Ohm: R = (V

supply

- V

) / I

. Yi amfani da matsakaicin V

daga rarrabuwa (misali, 3.6V don rarrabuwa 4) don ƙirar mai ra'ayin mazan jiya don tabbatar da cewa ƙarfin wutar lantarki bai wuce ƙimar da ake so ba. Don wadata na 5V da manufa 20mA: R = (5V - 3.6V) / 0.02A = 70Ω. Zaɓi mafi kusancin ƙimar ma'auni (misali, 68Ω ko 75Ω) kuma lissafta ainihin ƙarfin wutar lantarki da rushewar wutar resistor.

10.3 Me yasa ake rarrabe ƙarfin haske (luminous flux), kuma wane rarrabuwa (bin) ne ya kamata in zaɓa? Bambance-bambancen masana'antu suna haifar da ɗan bambanci a cikin fitar da haske. Rarrabe (Binning) yana haɗa LED tare da irin wannan aiki. Zaɓi rarrabuwa bisa mafi ƙarancin haske da ake buƙata don aikace-aikacenku. Yin amfani da rarrabuwa mafi girma (misali, B3) yana tabbatar da ƙarin haske, raka'a masu daidaito amma na iya zuwa da farashi mafi girma.

10.4 Shin zan iya amfani da wannan LED don aikace-aikacen waje? Kewayon zazzabin aiki shine -40°C zuwa +80°C, wanda ya ƙunshi yawancin yanayin waje. Duk da haka, LED ɗin kansa ba shi da ruwa ko kwanciyar hankali na UV. Don amfani da waje, dole ne a rufe shi da kyau ko a saka shi a cikin kayan aiki masu rufewa, masu hana yanayi waɗanda kuma ke sarrafa watsar da zafi.

• 11. Misalin Ƙira na Aiki Yanayi: Ƙirƙirar alamar matsayi mai ƙaramin ƙarfi don na'urar da ke amfani da wutar lantarki ta USB (5V). Manufa: Bayar da hasken alama shuɗi mai haske. Matakan Ƙira: Zaɓin LED: Zaɓi wannan LED shuɗi na SMD3528 (misali, rarrabuwar tsawon zango B4 don shuɗi mai tsabta). Saita Ƙarfin Wutar Lantarki: Manufa 15mA don isasshen haske da ƙarancin amfani da wutar lantarki. Lissafin Resistor: Ɗauka mafi munin yanayi V
• = 3.6V (Rarrabuwa 4). R = (5V - 3.6V) / 0.015A ≈ 93.3Ω. Yi amfani da resistor na ma'auni 100Ω. Binciken Ƙarfin Wutar Lantarki na Ainihi: Yin amfani da matsakaicin V
• na 3.2V, I = (5V - 3.2V) / 100Ω = 18mA (a cikin iyakoki masu aminci). Tsarin PCB: Sanya resistor 100Ω a jere tare da anode na LED. Yi amfani da shawarar tsarin gado. Tabbatar da cewa babu wasu alamun ko ɓangarorin da suke kusa da su don toshe kusurwar dubawa na digiri 120 idan an buƙata. Binciken Zafi: Rushewar wuta a cikin LED: P = V

* I

≈ 3.2V * 0.018A = 57.6mW, ƙasa sosai da matsakaicin 144mW. Ba a buƙatar musamman heatsinking.

12. Gabatarwar Ƙa'ida Wannan LED yana dogara ne akan tsarin diode na semiconductor. Lokacin da aka yi amfani da ƙarfin wutar lantarki na gaba wanda ya wuce ƙofar diode, electrons da ramuka suna sake haɗuwa a cikin yanki mai aiki (rijiyar quantum na InGaN a cikin wannan LED shuɗi), suna sakin makamashi a cikin nau'in photons. Takamaiman abun da ke ciki (Indium Gallium Nitride - InGaN) yana ƙayyade ƙarfin bandgap, wanda yake daidai da tsawon zango na hasken da aka fitar, a wannan yanayin, shuɗi (~460nm). Ruwan tabarau na epoxy yana rufe guntu, yana ba da kariya ta injiniya, kuma yana siffata fitar da hasken haske.

13. Ma'auni na Gwajin Dogaro (Reliability) Ana gudanar da samfurin cikakken gwajin dogaro bisa ma'auni na masana'antu (JESD22, MIL-STD-202G) don tabbatar da aiki na dogon lokaci. Manyan gwaje-gwaje sun haɗa da: Gwajin Rayuwar Aiki: A zazzabin daki, zafi mai zafi (85°C), da ƙananan zafi (-40°C) na sa'o'i 1008 a ƙarƙashin matsakaicin ƙarfin wutar lantarki. Rayuwar Aiki Mai Zafi Mai Zafi: 60°C / 90% RH na sa'o'i 1008. Zagayowar Zazzabi: Tsakanin -20°C da 60°C tare da danshi. Girgiza Zafi: -40°C zuwa 125°C don zagaye 100. Ma'auni na Kasawa: Ana ɗaukar gwaje-gwaje sun gaza idan samfuran sun nuna canjin ƙarfin wutar lantarki na gaba >200mV, lalacewar ƙarfin haske >15% (don LED na InGaN), ƙarfin wutar lantarki na baya >10µA, ko gazawar bala'i (buɗe/gaɓar da'ira).

14. Hanyoyin Ci Gaba Babban yanayin a cikin LED na SMD kamar 3528 yana zuwa ga mafi girman ingancin haske (ƙarin lumens kowace watt), ingantaccen daidaiton launi (ƙarin matsananciyar rarrabuwa), da ƙara dogaro a manyan yanayin zafi na aiki. Yayin da wannan kayan yana ci gaba da shahara, ana ci gaba da haɓakawa a cikin ƙananan kayayyaki (misali, 2016, 1010) don ƙananan ƙira da a cikin ƙirar ƙirar guntu (CSP) waɗanda ke kawar da jikin filastik na al'ada don mafi kyawun aikin zafi da sassaucin ƙirar gani. Ƙoƙarin samun mafi girman inganci da ƙarancin farashi kowace lumen yana ci gaba a cikin duk nau'ikan LED.

• Backlighting:For LCD displays, keypads, or signage.
• Status Indicators:On consumer electronics, appliances, and industrial equipment.
• Decorative Lighting:In accent lighting, mood lighting, or architectural features.
• General Illumination:As a component in LED modules, strips, or bulbs, often combined with phosphors to create white light.

.2 Design Considerations

• Current Limiting:Always drive the LED with a constant current source or a current-limiting resistor. Do not connect directly to a voltage source.
• Thermal Management:Design the PCB with adequate copper area or thermal vias to dissipate heat, especially when operating near maximum current. High junction temperatures accelerate lumen depreciation.
• ESD Protection:Although not explicitly stated as highly sensitive, implementing basic ESD protection on the driving circuit is a good practice for reliability.
• Optical Design:Consider the 120-degree viewing angle when designing lenses or light guides for the intended application.

. Technical Comparison

Compared to through-hole LEDs, the SMD3528 offers significant advantages in automated assembly, board space savings, and better thermal performance due to direct PCB attachment. Within the SMD family, the 3528 package is a mature and widely used standard, offering a good balance of size, light output, and cost. Compared to smaller packages like 3020 or 3014, the 3528 typically can handle slightly higher current and may have a larger luminous area. Compared to larger packages like 5050, it is more compact.

. Frequently Asked Questions (Based on Technical Parameters)

.1 What is the recommended operating current?

The technical parameters are specified at 20mA, which is the standard test current and a common operating point for good efficiency and longevity. It can be operated up to the absolute maximum of 30mA continuous, but this will generate more heat and may reduce lifespan.

.2 How do I select the correct current-limiting resistor?

Use Ohm's Law: R = (V_supply- V_F) / I_F. Use the maximum V_Ffrom the bin (e.g., 3.6V for bin 4) for a conservative design to ensure the current does not exceed the desired value. For a 5V supply and 20mA target: R = (5V - 3.6V) / 0.02A = 70Ω. Choose the nearest standard value (e.g., 68Ω or 75Ω) and calculate the actual current and resistor power dissipation.

.3 Why is luminous flux binned, and which bin should I choose?

Manufacturing variations cause slight differences in light output. Binning groups LEDs with similar performance. Choose a bin based on the minimum required brightness for your application. Using a higher bin (e.g., B3) ensures brighter, more consistent units but may come at a higher cost.

.4 Can I use this LED for outdoor applications?

The operating temperature range is -40°C to +80°C, which covers most outdoor environments. However, the LED itself is not waterproof or UV-stabilized. For outdoor use, it must be properly encapsulated or housed within a sealed, weatherproof fixture that also manages heat dissipation.

. Practical Design Case

Scenario:Designing a low-power status indicator for a USB-powered device (5V).
Goal:Provide a clear blue indicator light.
Design Steps:
1. LED Selection:Choose this SMD3528 blue LED (e.g., wavelength bin B4 for a pure blue).
2. Current Setting:Target 15mA for adequate brightness and lower power consumption.
3. Resistor Calculation:Assume worst-case V_F= 3.6V (Bin 4). R = (5V - 3.6V) / 0.015A ≈ 93.3Ω. Use a standard 100Ω resistor.
4. Actual Current Check:Using typical V_Fof 3.2V, I = (5V - 3.2V) / 100Ω = 18mA (within safe limits).
5. PCB Layout:Place the 100Ω resistor in series with the LED's anode. Use the recommended pad layout. Ensure no other traces or components are too close to obstruct the 120-degree viewing angle if needed.
6. Thermal Check:Power dissipation in LED: P = V_F* I_F≈ 3.2V * 0.018A = 57.6mW, well below the 144mW maximum. No special heatsinking is required.

. Principle Introduction

This LED is based on a semiconductor diode structure. When a forward voltage exceeding the diode's threshold is applied, electrons and holes recombine in the active region (the InGaN quantum well in this blue LED), releasing energy in the form of photons. The specific material composition (Indium Gallium Nitride - InGaN) determines the bandgap energy, which directly corresponds to the wavelength of the emitted light, in this case, blue (~460nm). The epoxy lens encapsulates the chip, provides mechanical protection, and shapes the light output beam.

. Reliability Test Standards

The product undergoes rigorous reliability testing based on industry standards (JESD22, MIL-STD-202G) to ensure long-term performance. Key tests include:

• Operating Life Test:At room temperature, high temperature (85°C), and low temperature (-40°C) for 1008 hours under maximum current.
• High Humidity Operating Life:°C / 90% RH for 1008 hours.
• Temperature Cycling:Between -20°C and 60°C with humidity.
• Thermal Shock:-40°C to 125°C for 100 cycles.

Failure Criteria:Tests are deemed failed if samples show a forward voltage shift >200mV, luminous flux degradation >15% (for InGaN LEDs), reverse leakage current >10µA, or catastrophic failure (open/short circuit).

. Development Trends

The general trend in SMD LEDs like the 3528 is towards higher luminous efficacy (more lumens per watt), improved color consistency (tighter binning), and increased reliability at higher operating temperatures. While this package remains popular, there is ongoing development in even smaller packages (e.g., 2016, 1010) for miniaturization and in chip-scale packages (CSP) that eliminate the traditional plastic body for better thermal performance and optical design flexibility. The drive for higher efficiency and lower cost per lumen continues across all LED form factors.