LTPL-C035RH660 LED Datasheet - 660nm Red Light - 2.1W Power - 350mA Current - Simplified Chinese Technical Document

1. Product Overview

This document details the specifications of a high-power surface-mount red LED with a peak wavelength of 660nm. Designed for solid-state lighting applications, this device combines high radiant flux output and high energy efficiency within an ultra-compact package. It aims to provide design flexibility and reliable performance as an alternative to traditional lighting technologies in various application scenarios.

1.1 Main Features and Advantages

This LED possesses several key characteristics that help enhance its performance and simplify the integration process:

• Daidaituwar Ƙirƙirar Lantarki:Ƙirar na'urar ta dace da hanyar tuƙi ta ƙirƙirar lantarki, wanda zai sauƙaƙe ƙirar tsarin.
• Daidaiton Muhalli:Abubuwan sun dace da ma'aunin RoHS, an yi su ta hanyar aikin da ba shi da gubar, suna bin ƙa'idodin muhalli na zamani.
• Aikin Aiki:Sakamakon ingantaccen canjin makamashi, fasahar LED na iya rage farashin aiki sosai idan aka kwatanta da hasken gargajiya.
• Ƙarancin Bukatar Kulawa:LED fasahar da ke da tsawon rayuwa na asali, yana iya rage buƙatun kulawa da farashi a cikin tsarin rayuwar samfur.
• Siffa mai ƙarfi:Kayan aikin haɗawa na saman yana goyan bayan tsarin PCB mai yawa da sauƙaƙan tsarin haɗawa.

2. Absolute Maximum Ratings

Yin aiki fiye da waɗannan iyakoki na iya haifar da lalacewar na'urar na dindindin. Duk ƙididdiga an ƙayyade su a yanayin zafin yanayi (Ta) na 25°C.

• Halin yanzu na gaba na DC (If):700 mA
• Amfani da wutar lantarki (Po):2.1 W
• Operating Temperature Range (Topr):-40°C to +85°C
• Storage Temperature Range (Tstg):-55°C to +100°C
• Junction Temperature (Tj):110°C

Important Note:Prolonged operation under reverse bias conditions may cause component damage or failure. Proper circuit design must ensure that the LED does not experience reverse voltage.

3. Electro-Optical Characteristics

The following parameters define the core performance of the LED under standard test conditions of Ta=25°C and a forward current (If) of 350mA. This is the recommended operating point.

3.1 Main Characteristics Table

• Forward Voltage (Vf):
  • Minimum: 1.6 V
  • Typical value: 2.1 V
  • Maximum value: 2.6 V
• Radiant flux (Φe):This is the total optical power output, measured using an integrating sphere.
  • Minimum value: 330 mW
  • Typical value: 405 mW
  • Maximum value: 480 mW
• Peak wavelength (λp):The wavelength at which spectral emission is strongest.
  • Minimum value: 650 nm
  • Maximum value: 670 nm
• Viewing angle (2θ1/2):The angular width at which light intensity drops to half of its maximum value.
  • Typical value: 130°

4. Tsarin Lambobi da Rarrabuwa

To ensure consistency in production and application, LEDs are sorted into different performance bins based on key parameters. The binning code is marked on the product packaging.

4.1 Rarrabuwar Ƙarfin Lantarki Mai Gaba (Vf)

Under the condition of If=350mA, LEDs are divided into voltage bins with a tolerance of ±0.1V.

• V0:1.6V - 1.8V
• V1:1.8V - 2.0V
• V2:2.0V - 2.2V
• V3:2.2V - 2.4V
• V4:2.4V - 2.6V

4.2 Rarrabuwar Ƙarfin Haske (Φe)

LEDs are sorted by optical output power, with a tolerance of ±10%.

• R2:330 mW - 360 mW
• R3:360 mW - 390 mW
• R4:390 mW - 420 mW
• R5:420 mW - 450 mW
• R6:450 mW - 480 mW

4.3 Rarrabuwar Tsawon Zango (λp)

LEDs are classified according to their dominant emission wavelength, with a tolerance of ±3nm.

• P6K:650 nm - 655 nm
• P6L:655 nm - 660 nm
• P6M:660 nm - 665 nm
• P6N:665 nm - 670 nm

Tips for designers:For applications requiring specific performance consistency (e.g., color matching in arrays, precise voltage drop), it is recommended to specify or request limited binning codes, which should be discussed during the procurement process.

5. Performance Curves and Detailed Analysis

The following curves help provide a deeper understanding of LED behavior under various operating conditions. Unless otherwise specified, all data are typical values measured at 25°C.

5.1 Relative Radiant Flux vs. Forward Current

This curve shows the relationship between drive current and light output. Radiant flux increases with current, but not linearly. Operating above the recommended 350mA yields higher output but also increases junction temperature and accelerates lumen depreciation. This curve is crucial for determining the optimal drive current that balances brightness and lifetime.

5.2 Relative Spectral Distribution

Wannan hoton yana kwatanta rarraba ƙarfin haske na LED a cikin dukan kewayon bakan zango. Ya tabbatar da halin kwanciyar hankali na LED, tare da tsayayyen kololuwa a kusa da 660nm (ja mai zurfi), kuma bakan bakan yana da kunkuntar. Wannan sifa tana da mahimmanci ga aikace-aikacen da ke buƙatar takamaiman tsaftar bakan, kamar hasken shuka ko na'urar auna haske.

5.3 Radiation Pattern (Viewing Angle)

Taswirar Polar tana nuna rarraba sararin samaniya na haske. Matsakaicin kusurwar dubawa na 130° yana nuna yanayin fitarwa mai faɗi mai kama da Lambertian. Wannan yana ba da haske mai faɗi da daidaito wanda ya dace da aikace-aikacen haske na gabaɗaya da alamomi, sabanin kusurwar haske mai ƙunci da ake amfani da ita don fitilun haske.

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

Wannan madaidaicin lankwili yana nuna alaƙar ma'auni tsakanin ƙarfin lantarki da ƙarfin lantarki a cikin diode. Ƙarfin lantarki na juyawa yana kusa da ƙimar Vf ta yau da kullun na 2.1V. Fahimtar wannan lankwili tana da mahimmanci don ƙirar da'irar iyakance ƙarfin lantarki. Idan aka yi amfani da tushen ƙarfin lantarki, ƙananan canje-canje a cikin zaɓaɓɓen ƙarfin lantarki zai haifar da babban canji a cikin ƙarfin lantarki, saboda haka dole ne a yi amfani da mai tuƙi na yau da kullun ko resistor a jere.

5.5 Relative Radiant Flux vs. Junction Temperature

Wannan shi ne daya daga cikin mahimman layukan zane na sarrafa zafi. Yana nuna yadda fitowar haske ke raguwa yayin da zafin jiki (Tj) ke tashi. Manyan fitilun LED suna da hankali ga zafi; Tj mai girma yana rage inganci (haske) da rage tsawon rayuwa. Ana buƙatar ingantattun matakan sanyaya zafi, don kiyaye Tj a ƙasa kamar yadda zai yiwu, a mafi kyau ya zama nesa da ƙimar madaidaicin 110°C, don tabbatar da kwanciyar hankali da dogon aminci.

6. Mechanical Dimensions and Package Information

Wannan LED yana amfani da kunshewar na'urar haɗawa ta saman (SMD). Mahimman bayanan girma sun haɗa da:

• Duk raka'a na girma na layi santa milimita (mm).
• Matsakaicin ƙimar girma gabaɗaya shine ±0.2mm.
• Matsakaicin ƙimar tsayin ruwan tabarau da tsayin/faɗin tushen yumbu ya fi tsauri, shine ±0.1mm.
• The central thermal pad is electrically isolated (floating) from the anode and cathode electrical pads. Its primary function is to conduct heat from the LED chip to the printed circuit board (PCB).

The outline drawing provides precise dimensions for the PCB pad design, including pad size, spacing, and component placement location.

7. Assembly and Soldering Guide

Proper handling and soldering are critical for reliability.

7.1 Shawarar Tsarin Zazzabi na Walda

A detailed temperature-time profile is provided. Key parameters typically include:

• Gundarin / Zazzafawa Yanki:Sarrafa zazzafawa don kunna kayan aikin gudanarwa.
• Kula da Zazzafawa Yanki:Dandalin zafin jiki, tabbatar da daidaiton zafin allon kewayawa.
• Koma-baya (Ruwa) Yanki:Yankin kololuwar zafin jiki inda gishiri ke narkewa. Babban zafin jiki na kewayon ba zai wuce iyakar da aka kayyade ba (yawanci kusan 260°C na ɗan lokaci).
• Gudun Sanyaya:Ana ba da shawarar amfani da hanyar sanyaya mai sarrafawa, ba mai sauri ba, don hana karo da zafi.

Important Note:The temperature profile may need to be adjusted according to the solder paste specification. Reflow soldering can be performed up to three times. If hand soldering is necessary, the temperature per pad must not exceed 300°C, and the time must not exceed 2 seconds. The reliability of dip soldering is not recommended or guaranteed.

7.2 Shawarar Tsarin PCB Pad

The land pattern for PCB design is provided. This pattern ensures good solder joint formation, electrical connection, and most importantly, optimal heat transfer from the LED thermal pad to the PCB copper plane. The size and shape of the thermal pad on the PCB are critical for effective heat dissipation.

7.3 Tsaftacewa da Aiki

• Cleaning:Use only approved alcohol-based solvents, such as Isopropyl Alcohol (IPA). Unspecified chemicals may damage the silicone lens or encapsulant material.
• Manual Handling:Always pick up the LED from the side, do not touch the lens or internal bonding wires. Avoid contact with optical surfaces to prevent contamination.

8. Ƙayyadaddun Marufi

LEDs are supplied in tape-and-reel packaging, compatible with automatic placement equipment.

• Tape Dimensions:Specifies pocket dimensions, pitch, and cover tape details.
• Reel Dimensions:Specifies reel diameter, hub size, and orientation.
• Packing Quantity:The standard 7-inch reel can accommodate up to 500 pieces. The minimum packaging for the remaining quantity is 100 pieces.
• Quality:Compliant with EIA-481-1-B standard. The maximum number of consecutive missing components in the tape is two.

9. Bayanin Aikace-aikace da La'akari da Ƙira

9.1 Ƙirar Da'irar Turawa

LEDs are current-driven devices. To ensure reliable operation:

• Constant Current Drive:The recommended method is to use a constant current source or driver IC. This ensures that the light output remains stable even with minor variations in forward voltage.
• Series Resistor (Simple Method):When using a voltage source, a current-limiting resistor must be connected in series with each LED. The resistor value is calculated using Ohm's Law: R = (Supply Voltage - Vf) / If. This method is less efficient but simple and straightforward.
• Parallel Connection Considerations:It is not recommended to directly connect multiple LEDs in parallel to a single current source. Minor differences in the I-V characteristics of individual LEDs (even from the same bin) can lead to significant current imbalance, causing uneven brightness or even overcurrent in some devices. Use an independent current-limiting element for each LED or connect them in series.

9.2 Gudanar da Zafi

This is crucial for high-power LEDs. The design steps include:

1. PCB Design:Use a PCB with a dedicated thermal pad, which should be connected to an internal ground plane or a large area of copper foil.
2. Vias:Arrange an array of thermal vias under the LED thermal pad to conduct heat to the inner layers or the bottom of the board.
3. External Heat Sink:For applications involving high current operation or high ambient temperatures, it may be necessary to add an external heat sink to the PCB.
4. Monitoring:In critical applications, consider monitoring the board temperature near the LED to ensure it does not exceed the operating limits.

9.3 Dangantakar Muhalli da Kayan

Na'urar tana da lallausan zinare, amma a lura:

• A cikin haɗuwa ta ƙarshe, guji amfani da kayan da ke ɗauke da sulfur (misali wasu abubuwan rufewa, ginshiƙai, mannewa), saboda sulfur zai lalata zinaren, haifar da gazawar haɗin kai.
• 请勿在高湿度（>85% RH）、有凝露、盐雾或腐蚀性气体（Cl2、H2S、NH3、SO2、NOx）的环境中操作或储存产品。

10. Typical Application Scenarios

Wannan 660nm jan haske LED saboda takamaiman tsawon raƙuman ruwa da ƙarfi, ya dace da aikace-aikace da yawa:

• Plant Lighting:The 660nm wavelength falls within the Photosynthetically Active Radiation (PAR) range and is particularly suitable for promoting flowering and fruiting in greenhouse or indoor cultivation environments.
• Automotive Lighting:Can be used for rear combination lamps (tail lights/brake lights), interior ambient lighting, or status indicator lights.
• Signage and Display Backlighting:Its high brightness and wide viewing angle make it suitable for 3D illuminated letters, light boxes, and decorative lighting.
• Industrial and Machine Vision:Used as a structured light source, or for illumination in optical sensing and inspection systems.
• Kayayyakin Lantarki na Masu Amfani:Alamar Yanayi, hasken baya na maɓalli ko panel a cikin kayan aikin gida da na sauti da bidiyo.

11. Frequently Asked Questions (FAQ)

Q1: Menene bambanci tsakanin Radiation Flux (mW) da Luminous Flux (lm)?
A1: Radiation Flux yana auna jimlar ƙarfin haske a cikin Watts, ba tare da la'akari da tsawon zango ba. Luminous Flux yana auna hasken da idon mutum yake gani, kuma an yi masa nauyin lanƙwasa na gani na photopic (kololuwa a hasken kore na 555nm). Ga LED mai haske ja mai zurfi na 660nm, ingancin haske (lm/W) ya fi ƙasa da na LED farin haske ko kore, saboda haka Radiation Flux shine mafi dacewar ma'auni don auna ƙarfin haskensa.

Q2: Zan iya amfani da cikakken igiyar ruwa na 700mA don kunna wannan LED?
A2: Ko da yake yana yiwuwa, ba a ba da shawarar don aiki na ci gaba ba. Yin haka zai haifar da ƙarin zafi, yana rage inganci da sauri (duba lanƙwasa na Dangantaccen Flux vs. Zazzabi), kuma yana rage tsawon rayuwar LED. Matsakaicin aiki na 350mA da aka ba da shawarar yana ba da mafi kyawun daidaito tsakanin fitarwa, inganci, da tsawon rai.

Q3: Me yasa filin haɗa zafi ya kasance mai tsaka-tsaki a lantarki?
A3: This design simplifies PCB layout and improves thermal performance. It allows the thermal pad to be directly connected to a large area copper ground plane or heat sink on the PCB without causing an electrical short. This maximizes the heat conducted away from the LED junction.

Q4: How to interpret the bin code when ordering?
A4: The bin code (e.g., V2R4P6L) specifies the performance ranges for voltage, radiant flux, and peak wavelength. To achieve consistent performance within an array, you should specify a narrow range or a single bin for each parameter. A standard order may receive a mix of bins within the product's overall specification range.