Bayanin Fasaha na LED na Fari 0.2W na Tsarin 3020 - Girman 3.0x2.0mm - Ƙarfin Lantarki 3.2V - Ƙarfi 0.2W - Takardun Fasaha na Hausa

1. Bayanin Samfur

Tsarin 3020 ƙaramin na'ura ne mai ƙarfi (SMD) LED wanda aka tsara don aikace-aikacen haske na gabaɗaya waɗanda ke buƙatar tushen haske na fari mai aminci da inganci. Wannan LED na fari 0.2W mai guda ɗaya yana ba da ma'auni na ingancin haske, aikin zafi, da ingancin farashi, wanda ya sa ya dace da nau'ikan samfuran haske na kasuwanci da masana'antu.

Babban fa'idodinsa sun haɗa da ƙaramin girman 3.0mm x 2.0mm, faɗin kusurwar kallo na digiri 110, da ƙaƙƙarfan gini wanda ya dace da daidaitattun hanyoyin siyar da gudana. Kasuwar da aka yi niyya ta ƙunshi raka'o'in hasken baya, hasken ado, fitilun nuna alama, da haɗawa cikin na'urorin lantarki da alamomi daban-daban.

2. Ma'auni da Ƙayyadaddun Fasaha

2.1 Matsakaicin Matsakaicin Ƙimar (T_s=25°C)

Waɗannan ma'auni suna ayyana iyakokin da za su iya haifar da lalacewa ta dindindin ga LED. Ba a ba da garantin aiki a ƙarƙashin waɗannan sharuɗɗan ba.

• Ƙarfin Lantarki na Gaba (I_F):80 mA (Ci gaba)
• Ƙarfin Lantarki na Gaba na Ƙwaƙwalwa (I_FP):120 mA (Faɗin bugun jini ≤10ms, Tsarin aiki ≤1/10)
• Rushewar Ƙarfi (P_D):280 mW
• Zazzabin Aiki (T_opr):-40°C zuwa +80°C
• Zazzabin Ajiya (T_stg):-40°C zuwa +80°C
• Zazzabin Haɗin kai (T_j):125°C
• Zazzabin Solder (T_sld):230°C ko 260°C na dakika 10 (Reflow)

2.2 Halayen Lantarki-Gani (T_s=25°C, I_F=60mA)

Waɗannan su ne mafi yawan ma'auni na aiki a ƙarƙashin daidaitattun sharuɗɗan gwaji.

• Ƙarfin Lantarki na Gaba (V_F):Mafi yawan 3.2V, Matsakaicin 3.5V
• Ƙarfin Lantarki na Baya (V_R):5V
• Ƙarfin Lantarki na Baya (I_R):Matsakaicin 10 µA
• Kusurwar Kallo (2θ_1/2):110°

3. Bayanin Tsarin Rarrabawa

An rarraba samfurin zuwa kwandon don tabbatar da daidaiton launi da haske a cikin aikace-aikace. Lambar oda tana ayyana waɗannan kwandon.

3.1 Dokar Lambar Model

Tsarin lambar sashi shine: T [Lambar Siffa] [Ƙidaya Chip] [Lambar Ruwan tabarau] [Lambar Ciki] - [Lambar Flux] [Lambar CCT]. Misali, T3400SLA yayi daidai da siffar 3020 (34), ƙaramin guntun ƙwaya guda ɗaya (S), babu ruwan tabarau (00), lambar ciki A, tare da takamaiman kwandon flux da CCT waɗanda aka ayyana ta hanyar ƙarshen ƙarshe.

3.2 Rarrabawar Zazzabin Launi Mai Alaƙa (CCT)

Ana sanya LED a cikin takamaiman ellipses na chromaticity akan zanen CIE don tabbatar da daidaiton launi. Daidaitattun kwandon oda sune:

• 2725K ±145K (Bin 27M5)
• 3045K ±145K (Bin 30M5)
• 3985K ±275K (Bin 40M5)
• 5028K ±283K (Bin 50M5)
• 5665K ±355K (Bin 57M7)
• 6530K ±510K (Bin 65M7)

Kowane kwandon an ayyana shi ta wurin tsakiyar maki ellipse (x, y), manyan/ƙananan radius na axis, da kusurwar juyawa, suna bin ka'idojin ellipse na MacAdam na mataki 5 ko 7 don ƙaƙƙarfan sarrafa launi.

3.3 Rarrabawar Flux Mai haske

Ana rarraba Flux ta mafi ƙarancin ƙima a 60mA. Tebur suna ayyana mafi ƙarancin kewayon flux na yanayi da na yau da kullun don Warm White (2700-3700K), Neutral White (3700-5000K), da Cool White (5000-7000K), kowannensu yana samuwa a cikin daidaitaccen (CRI≥70) da babban launi. -sakewa (CRI≥80) sigogi. Lambobi suna kewayo daga D1 (misali, 18-19 lm min) zuwa D8 (misali, 25-26 lm min).

3.4 Rarrabawar Ƙarfin Lantarki na Gaba

Don taimakawa wajen daidaita halin yanzu a cikin ƙirar LED da yawa, V_Fana rarraba shi cikin matakan 0.1V. Kwandon sune: B (2.8-2.9V), C (2.9-3.0V), D (3.0-3.1V), E (3.1-3.2V), F (3.2-3.3V), G (3.3-3.4V), H (3.5-3.6V).

3.5 Tolerances na Ma'auni

• Flux Mai haske: ±7%
• Ƙarfin Lantarki na Gaba: ±0.08V
• Fihirisar Sakewa Launi (CRI): ±2
• Haɗin Haɗin Launi: ±0.005

4. Bincike na Lanƙwasa Aiki

4.1 Halayen Halayen Ƙarfin Lantarki (I-V)

Jadawalin yana nuna alaƙar da ke tsakanin ƙarfin lantarki na gaba da ƙarfin lantarki na gaba. Lanƙwasa ta kasance ta yau da kullun ga LED na tushen GaN, yana nuna haɓakar ma'auni bayan ƙarfin lantarki na kunna (~2.7V). Yin aiki a daidaitaccen 60mA yana tabbatar da ingantaccen inganci da tsawon rai, guje wa yankin babban halin yanzu inda inganci ya ragu kuma samar da zafi ya ƙaru sosai.

4.2 Dangantaccen Flux Mai haske vs. Ƙarfin Lantarki na Gaba

Wannan lanƙwasa yana nuna dogaron fitar da haske akan ƙarfin tuƙi. Yayin da flux ke ƙaruwa tare da halin yanzu, yana zama ƙasa da layi a manyan halayen yanzu saboda raguwar inganci da ƙara yawan zafin haɗin gwiwa. An zaɓi wurin aiki na 60mA don daidaita fitarwa da inganci. Tuki sama da matsakaicin matsakaicin ƙimar (80mA ci gaba) yana rage tsawon rai da aminci sosai.

4.3 Rarraba Ƙarfin Gani (SPD)

Lanƙwasa mai dacewa ta gani tana nuna bakan fitarwa don kewayon CCT daban-daban (2600-3700K, 3700-5000K, 5000-10000K). LED masu sanyi suna da ƙarfin kololuwar shuɗi daga guntun ƙwaya da ƙarancin hasken rawaya/ja da aka canza, yayin da LED masu dumi suna nuna ƙarin fitar da fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin fakitin 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.4 Junction Temperature vs. Relative Spectral Energy

This graph illustrates the effect of junction temperature (T_j) on the LED's spectrum. As T_jincreases, the overall spectral output typically decreases (efficiency drop), and the peak wavelength may shift slightly. Effective thermal management is crucial to maintain consistent color point and light output over the product's lifetime.

. Mechanical and Package Information

.1 Outline Dimensions

The LED package has dimensions of 3.0mm (length) x 2.0mm (width). The dimensional drawing specifies all critical measurements, including lens height and pad locations. Tolerances are defined as ±0.10mm for .X dimensions and ±0.05mm for .XX dimensions.

.2 Pad Layout and Stencil Design

Separate diagrams are provided for the recommended PCB land pattern (pad layout) and the solder paste stencil design. The land pattern ensures proper solder joint formation and mechanical stability. The stencil design controls the volume of solder paste deposited, which is critical for achieving reliable solder joints without bridging or insufficient solder. Following these guidelines is essential for high-yield assembly.

.3 Polarity Identification

The cathode is typically marked on the LED package. The pad layout diagram also indicates the anode and cathode connections. Correct polarity must be observed during assembly to prevent reverse bias, which can damage the LED at voltages exceeding the reverse voltage rating (5V).

. Soldering and Assembly Guidelines

.1 Moisture Sensitivity and Baking

The 3020 LED package is moisture-sensitive (MSL classified per IPC/JEDEC J-STD-020C). Exposure to ambient humidity after opening the moisture barrier bag can lead to popcorn cracking or delamination during reflow soldering due to rapid vapor expansion.

• Storage:Unopened bags should be stored below 30°C/85% RH. After opening, store at 5-30°C with humidity as low as possible (<20% RH recommended).
• Floor Life:The time between bag opening and reflow must be controlled. Check the humidity indicator card inside the bag immediately upon opening.
• Baking Conditions:If LEDs have been exposed to humidity beyond specifications, they must be baked before reflow. Recommended bake: 60°C for 24 hours on the original reel. Do not exceed 60°C. Use within 1 hour after baking or store in a dry cabinet (<20% RH).

.2 Reflow Soldering Profile

The LED can withstand a peak reflow temperature of 230°C or 260°C for a maximum of 10 seconds. A standard lead-free (SAC305) reflow profile is applicable. Ensure the temperature ramp rate is controlled to minimize thermal shock. The provided maximum soldering temperature rating must not be exceeded to avoid damaging the epoxy lens, phosphor, or wire bonds.

. Packaging and Ordering Information

The LEDs are typically supplied on tape and reel for automated pick-and-place assembly. The specific reel size and packing quantity should be confirmed with the supplier. Ordering is done using the complete model number, which specifies all binned parameters: shape, chip count, lens, CCT, and luminous flux. Custom bin combinations outside the standard offering may be available upon request.

. Application Suggestions and Design Considerations

.1 Typical Application Scenarios

• Backlighting:Edge-lit or direct-lit panels for LCDs, signage, and displays.
• Decorative Lighting:Accent lighting, contour lighting, and mood lighting.
• General Illumination:Integrated into bulbs, tubes, and panels as an array.
• Indicator Lights:Status indicators on appliances and electronics.

.2 Design Considerations

• Current Drive:Use a constant current driver, not a constant voltage source, for stable and consistent light output. The recommended operating current is 60mA.
• Thermal Management:Despite its low power, effective heat sinking is vital for maintaining luminous flux, color stability, and long lifetime. Ensure the PCB has adequate thermal vias and copper area connected to the LED's thermal pad (if applicable) or the cathode pads.
• Optical Design:The 110-degree viewing angle provides wide, diffuse illumination. For focused beams, secondary optics (lenses, reflectors) are required.
• Electrical Layout:Keep drive traces short and wide to minimize voltage drop. In arrays, consider connecting LEDs in series where possible to ensure identical current, or use parallel strings with individual current-limiting resistors, selecting LEDs from the same V_Fbin for better current balance.

. Technical Comparison and Differentiation

Compared to older packages like 3528, the 3020 offers a more compact footprint, potentially higher design density. Its single-chip, 0.2W design provides a good balance for applications needing more light than a typical 0.1W LED but where the thermal challenge of a 0.5W or 1W LED is prohibitive. The wide 110-degree beam angle is a key differentiator from narrower-angle LEDs, eliminating the need for diffusers in many applications and providing more uniform illumination.

. Frequently Asked Questions (Based on Technical Parameters)

.1 What is the difference between the typical and maximum forward voltage?

The typical V_F(3.2V) is the expected value for most units under test conditions. The maximum V_F(3.5V) is the upper limit guaranteed by the specification. Your driver circuit must be designed to supply the required current even if the LED's V_Fis at the maximum value, especially when LEDs are connected in series.

.2 Can I drive this LED at 80mA continuously?

While 80mA is the absolute maximum continuous current rating, operating at this limit will generate more heat, reduce luminous efficacy (lm/W), accelerate lumen depreciation, and potentially shorten the LED's lifespan. For optimal performance and reliability, the recommended operating current of 60mA should be used.

.3 Why is baking necessary, and how do I know if my LEDs need it?

Baking removes absorbed moisture from the plastic package to prevent damage during the high-temperature reflow soldering process. Check the humidity indicator card inside the sealed moisture barrier bag immediately upon opening. If the card shows that the humidity exposure limit has been exceeded (e.g., the pink dot is darker than the reference), or if the bag has been open in a humid environment beyond the allowed floor life, baking is required.

.4 How do I interpret the luminous flux bin code (e.g., D5)?

The flux code (D5) corresponds to a minimum luminous flux value at 60mA for a given CCT and CRI bin. For example, a Cool White (5000-7000K), CRI≥70 LED with code D5 has a minimum flux of 22 lumens and a typical maximum of 23 lumens. You should design your system based on the minimum value to ensure performance targets are met even with lower-binning units.

. Practical Application Case Study

Scenario: Design of a Linear LED Light Bar.A designer is creating a 24V, 0.6-meter light bar using the 3020 LED. Targeting a specific illuminance, they calculate needing 60 LEDs. To power from 24V, they decide on 7 LEDs in series (7 * 3.2V_typ= 22.4V), leaving headroom for the current regulator. They would create 8 parallel strings of 7-series LEDs (56 total LEDs). To ensure even brightness, they specify all LEDs from the same CCT bin (e.g., 4000K Neutral White, bin 40M5) and a tight flux bin (e.g., D5). They also specify the same V_Fbin (e.g., F bin: 3.2-3.3V) to improve current balance between the 8 parallel strings. The PCB is designed with a 2-oz copper layer and thermal vias under the LED pads connected to an aluminum substrate for heat dissipation. The assembly instructions mandate baking the reels if the factory floor humidity is high, followed by a controlled reflow process using the recommended profile.

. Operating Principle Introduction

A white LED is fundamentally a semiconductor diode. When a forward voltage exceeding its bandgap energy is applied, electrons and holes recombine in the active region (the chip), releasing energy in the form of photons. This primary emission is typically in the blue or ultraviolet spectrum for GaN-based chips. To produce white light, a portion of this primary light is absorbed by a phosphor coating (cerium-doped yttrium aluminum garnet - YAG:Ce is common) deposited on or around the chip. The phosphor down-converts the high-energy blue/UV photons into a broad spectrum of lower-energy yellow light. The mixture of the remaining blue light from the chip and the converted yellow light from the phosphor appears white to the human eye. By adjusting the phosphor composition and thickness, different Correlated Color Temperatures (CCTs) from warm white to cool white can be achieved.

. Technology Trends and Developments

The general trend in SMD LEDs like the 3020 is towards higher luminous efficacy (more lumens per watt), improved color rendering (higher CRI and R9 values for red rendition), and greater color consistency (tighter binning). There is also a focus on enhanced reliability and longevity under higher operating temperatures, driven by demands for more compact luminaires. Furthermore, the industry continues to develop more robust and moisture-resistant package materials to simplify handling and assembly processes. The push for "human-centric" lighting is leading to LEDs with tunable CCT and spectral optimization to support circadian rhythms. While this datasheet describes a standard white LED, the underlying package technology is a platform that can be adapted for these advancing performance characteristics.