LTLR42FTBK4KHBPT LED Mai Haske Blue Datasheet - Nau'in T-1 - 3.2V - 20mA - 400mcd

Teburin Abubuwan Ciki

1. Bayanin Samfur

LTLR42FTBK4KHBPT LED ne mai haske blue wanda aka ƙera don ɗora shi ta cikin rami akan allunan da'ira (PCBs). Yana cikin tsarin Nuna Allon Da'ira (CBI), wanda ke amfani da mai riƙe na kusurwa dama na filastik baƙi (gida) wanda ke haɗuwa da fitilar LED. Wannan dangin samfurin sananne ne saboda yawan amfani da shi, yana ba da tsari kamar kallon sama (spacer) ko kusurwa dama, kuma ana iya jera su a jere a kwance ko a tsaye. Ɗaukar hoto yana mai da hankali kan sauƙin haɗawa da yawan jeri.

1.1 Siffofi na Asali

Sauƙin Haɗawa:An ƙera shi musamman don sauƙaƙan da ingantaccen tsarin haɗa allon da'ira.
Tushen Haske Mai Ƙarfi:Yana ba da babban amintacce, dogon rayuwa, da juriya ga girgiza da rawar jiki idan aka kwatanta da fitilun wuta na gargajiya.
Ingantaccen Amfani da Wutar Lantarki:Yana da ƙarancin amfani da wutar lantarki da ingantaccen haske.
Bin Ka'idojin Muhalli:Wannan samfurin ba shi da gubar kuma ya bi ka'idojin Hana Abubuwa Masu Haɗari (RoHS).
Tushen Haske:Yana amfani da guntun semiconductor na InGaN (Indium Gallium Nitride) tare da ƙimar fitarwa ta 470nm (blue).
Marufi:Ana bayar da shi a cikin tef da marufi na reel wanda ya dace da kayan aikin haɗawa ta atomatik.

1.2 Aikace-aikacen Da Ake Nufi

Wannan LED ya dace da ɗimbin kayan aikin lantarki da ke buƙatar nuna matsayi, hasken baya, ko haske na gabaɗaya. Manyan kasuwannin aikace-aikace sun haɗa da:

Kayan aikin kwamfuta da IT
Na'urorin sadarwa
Kayan lantarki na masu amfani
Kayan sarrafa masana'antu da kayan aiki

2. Zurfin Binciken Ma'auni na Fasaha

2.1 Matsakaicin Matsakaicin Ƙimar

Waɗannan ƙimar suna ayyana iyakokin da za su iya haifar da lalacewa na dindindin ga na'urar. Ba a ba da garantin aiki a ƙarƙashin waɗannan sharuɗɗan ba.

Rushewar Wutar Lantarki (Pd):76 mW matsakaici. Wannan shine jimillar wutar lantarki da na'urar za ta iya watsawa azaman zafi.
Matsakaicin Halin Gaba na Gaba (I_FP):100 mA matsakaici. Wannan yana halatta ne kawai a ƙarƙashin yanayin bugun jini (duty cycle ≤ 1/10, faɗin bugun ≤ 10μs).
Ci Gaba da Halin Gaba na Gaba (I_F):20 mA matsakaici a ƙarƙashin yanayin DC.
Rage Ƙimar Halin Yanzu:Dole ne a rage matsakaicin halin yanzu na DC da aka halatta da 0.273 mA ga kowane digiri Celsius yanayin yanayi (T_A) ya tashi sama da 30°C.
Kewayon Yanayin Aiki (T_opr):-30°C zuwa +80°C.
Kewayon Yanayin Ajiya (T_stg):-40°C zuwa +100°C.
Zazzabi na Solder na Jagora:260°C matsakaici na dakika 5, ana auna shi a wuri mai nisan 2.0mm (0.079 inci) daga jikin LED.

2.2 Halaye na Lantarki & Na Gani

Waɗannan su ne ma'auni na yau da kullun na aiki da aka auna a yanayin yanayi (T_A) na 25°C.

Ƙarfin Haske (I_V):140 - 680 mcd (millicandela), tare da ƙimar yau da kullun na 400 mcd, ana auna shi a I_F= 20mA. Ainihin lambar bin ke ƙayyade takamaiman kewayon.
Kusurwar Dubawa (2θ_1/2):Digiri 45. Wannan shine cikakken kusurwar da ƙarfin haske ke faɗuwa zuwa rabin ƙimar axial ta kololuwa.
Matsakaicin Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon Tsawon 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This is the wavelength at which the spectral output is strongest.
Dominant Wavelength (λ_d): - 475 nm, with a typical value of 470 nm. This is the single wavelength perceived by the human eye that defines the color.
Spectral Line Half-Width (Δλ): nm. This indicates the spectral purity or bandwidth of the emitted light.
Forward Voltage (V_F):.7 - 3.4 V, with a typical value of 3.2 V, measured at I_F= 20mA.
Reverse Current (I_R): μA (microamperes) maximum, measured at a reverse voltage (V_R) of 5V.Important:This device is not designed for operation under reverse bias; this test is for characterization only.

. Binning System Specification

The LTLR42FTBK4KHBPT is sorted (binned) according to two key optical parameters to ensure color and brightness consistency within an application. The bin code is marked on the packing bag.

.1 Luminous Intensity Binning

Binned at a test current of 20mA. The tolerance for each bin limit is ±15%.

Bin H: - 240 mcd
Bin J: - 310 mcd
Bin K: - 400 mcd
Bin L: - 520 mcd
Bin M: - 680 mcd

.2 Dominant Wavelength Binning

Binned at a test current of 20mA. The tolerance for each bin limit is ±1 nm.

Bin B08:.0 - 470.0 nm
Bin B09:.0 - 475.0 nm

. Performance Curve Analysis

The datasheet includes typical characteristic curves which are essential for circuit design and understanding device behavior under varying conditions. These curves graphically represent relationships such as:

Forward Current vs. Forward Voltage (I-V Curve):Shows the non-linear relationship between the voltage across the LED and the current flowing through it. This is critical for selecting the appropriate current-limiting resistor or driver circuit.
Luminous Intensity vs. Forward Current:Illustrates how light output increases with current. It demonstrates the sub-linear relationship, indicating that efficiency may drop at very high currents.
Luminous Intensity vs. Ambient Temperature:Shows the dependency of light output on junction temperature. Typically, luminous intensity decreases as temperature increases.
Spectral Distribution:A plot of relative radiant power versus wavelength, showing the peak at 468nm and the 25nm half-width, confirming the blue color characteristics.

. Mechanical & Packaging Information

.1 Outline Dimensions

The LED lamp conforms to the standard T-1 (3mm) package dimensions. The associated black plastic right-angle holder has specific mechanical drawings provided in the datasheet. Key notes include:

All dimensions are in millimeters (with inch equivalents).
Standard tolerance is ±0.25mm (±0.010\") unless otherwise specified.
The holder material is black plastic.
The LED lamp itself has a blue InGaN chip and a water-clear (transparent) lens.

.2 Packaging Specification

The device is supplied in an industry-standard tape and reel format for automated placement.

Carrier Tape:Made of black conductive polystyrene alloy. Thickness is 0.50 ±0.06 mm.
Reel:Standard 13-inch diameter reel containing 400 pieces.
Carton Packaging:
- reel is packed with a humidity indicator card and desiccant inside one Moisture Barrier Bag (MBB).
- MBBs are packed in one Inner Carton (total 800 pcs).
- Inner Cartons are packed in one Outer Carton (total 8,000 pcs).

. Soldering & Assembly Guidelines

.1 Storage Conditions

Sealed Package:Store at ≤30°C and ≤70% Relative Humidity (RH). Use within one year of the bag seal date.
Opened Package:Store at ≤30°C and ≤60% RH. Components should undergo IR reflow soldering within 168 hours (7 days) of exposure.
Extended Storage (Opened):For storage beyond 168 hours, store in a sealed container with desiccant or in a nitrogen desiccator. Components stored out of the original bag for more than 168 hours must be baked at approximately 60°C for at least 48 hours before solder assembly to remove absorbed moisture and prevent \"popcorning\" damage during reflow.

.2 Lead Forming

Bend leads at a point at least 3mm from the base of the LED lens.
Do not use the base of the lead frame as a fulcrum.
Perform lead forming at room temperature andbeforethe soldering process.
During PCB insertion, use the minimum clinch force necessary to avoid imposing excessive mechanical stress on the component.

.3 Soldering Process

General Rule:Maintain a minimum clearance of 2mm from the base of the lens/holder to the soldering point. Avoid dipping the lens/holder into solder. Do not apply external stress to the leads while the LED is at high temperature.

Hand Soldering (Iron):
- Temperature: 350°C maximum.
- Time: 3 seconds maximum per solder joint.
- Position: No closer than 2mm from the base.
Wave Soldering:
- Pre-heat Temperature: 100°C maximum.
- Pre-heat Time: 60 seconds maximum.
- Solder Wave Temperature: 260°C maximum.
- Soldering Time: As per standard wave soldering profile, ensuring the 2mm clearance is maintained.

.4 Cleaning

If cleaning is required after soldering, use alcohol-based solvents such as isopropyl alcohol. Avoid using harsh or aggressive chemical cleaners.

. Application Notes & Design Considerations

.1 Typical Application Scenarios

This blue LED is well-suited for both indoor and outdoor signage applications, as well as general status indication in a wide variety of electronic equipment including computers, networking gear, consumer appliances, and industrial control panels. The right-angle holder provides a 90-degree light emission path ideal for panel-mounted indicators.

.2 Circuit Design

Current Limiting:An external current-limiting resistor is mandatory when driving the LED from a voltage source. The resistor value can be calculated using Ohm's Law: R = (V_supply- V_F) / I_F. Always use the maximum V_Ffrom the datasheet (3.4V) for a conservative design to ensure the current does not exceed 20mA.
Thermal Management:Observe the power dissipation and current derating specifications. For applications with high ambient temperatures or continuous operation, ensure adequate ventilation or heat sinking if necessary to keep the junction temperature within safe limits.
Reverse Voltage Protection:As the device is not designed for reverse bias operation, consider adding a protection diode in series or parallel (depending on the circuit) if there is any possibility of reverse voltage being applied.

.3 Optical Design

The 45-degree viewing angle provides a reasonably wide beam, suitable for general indication.
The water-clear lens produces a bright, focused point source. For diffused light, an external diffuser or a holder with a diffused lens would be required.
When selecting bins for an application requiring multiple LEDs, specify the same luminous intensity and dominant wavelength bin codes to ensure visual uniformity across all indicators.

. Technical Comparison & Differentiation

While specific competitor comparisons are not provided in the datasheet, the LTLR42FTBK4KHBPT can be evaluated based on its standard specifications:

Package:The classic T-1 through-hole package offers robustness and ease of manual prototyping, though it is being supplanted by surface-mount devices (SMDs) in high-volume automated production.
Efficiency:With a typical luminous intensity of 400 mcd at 20mA (approx. 64mW), it offers good efficiency for a standard blue LED. Newer high-brightness or low-current SMD LEDs may offer higher efficacy (lumens per watt).
System Integration:The key differentiator is the integrated CBI (Circuit Board Indicator) system concept—the separate, stackable right-angle holder. This allows for flexible mechanical design and easy replacement of the LED element without changing the holder mounted on the PCB.

. Frequently Asked Questions (FAQ)

Q1: What is the difference between Peak Wavelength (λ_P) and Dominant Wavelength (λ_d)?
A1: Peak Wavelength is the physical wavelength where the LED emits the most optical power. Dominant Wavelength is a calculated value based on human color perception (CIE chromaticity diagram) that represents the single wavelength of the perceived color. They are often close but not identical.

Q2: Can I drive this LED with a constant voltage source without a resistor?
A2: No. LEDs are current-driven devices. Their forward voltage has a tolerance range (2.7V-3.4V). Connecting directly to a voltage source even slightly above the minimum V_Fcan cause excessive current flow, overheating, and rapid failure. Always use a series current-limiting resistor or a constant-current driver.

Q3: Why is the 168-hour floor life after bag opening so important?
A3: Plastic LED packages can absorb moisture from the air. During the high-temperature reflow soldering process, this trapped moisture can vaporize rapidly, creating internal pressure that can delaminate the package or crack the die (\"popcorning\"). The 168-hour limit and baking procedure are critical moisture sensitivity level (MSL) precautions to prevent this failure mode.

Q4: How do I interpret the bin code on the bag?
A4: The bin code, e.g., \"K-B09\\

Kalmomin Ƙayyadaddun LED

Cikakken bayanin kalmomin fasaha na LED

Aikin Hasken Wutar Lantarki

Kalma	Naúrar/Wakilci	Bayanin Sauri	Me yasa yake da muhimmanci
Ingancin Hasken Wuta	lm/W (lumen kowace watt)	Fitowar haske kowace watt na wutar lantarki, mafi girma yana nufin mafi ingancin kuzari.	Kai tsaye yana ƙayyade matakin ingancin kuzari da farashin wutar lantarki.
Gudun Hasken Wuta	lm (lumen)	Jimillar hasken da tushe ke fitarwa, ana kiransa "haske".	Yana ƙayyade ko hasken yana da haske sosai.
Kusurwar Dubawa	° (digiri), misali 120°	Kusurwar da ƙarfin haske ya ragu zuwa rabi, yana ƙayyade faɗin haske.	Yana shafar kewar haskakawa da daidaito.
Zafin Launi (CCT)	K (Kelvin), misali 2700K/6500K	Zafi/sanyin haske, ƙananan ƙimomi rawaya/zafi, mafi girma fari/sanyi.	Yana ƙayyade yanayin haskakawa da yanayin da suka dace.
CI / Ra	Ba naúrar, 0–100	Ikon ba da launukan abubuwa daidai, Ra≥80 yana da kyau.	Yana shafar sahihancin launi, ana amfani dashi a wurare masu buƙatu kamar shaguna, gidajen tarihi.
SDCM	Matakan ellipse MacAdam, misali "5-mataki"	Ma'aunin daidaiton launi, ƙananan matakai suna nufin mafi daidaiton launi.	Yana tabbatar da daidaiton launi a cikin rukunin LED iri ɗaya.
Matsakaicin Tsawon Raɗaɗin Hasken	nm (nanomita), misali 620nm (ja)	Tsawon raɗaɗin haske daidai da launin LED masu launi.	Yana ƙayyade launin ja, rawaya, kore LED masu launi ɗaya.
Rarraba Bakan Hasken	Layin tsawon raɗaɗi da ƙarfi	Yana nuna rarraba ƙarfi a cikin tsawon raɗaɗin haske.	Yana shafar ba da launi da ingancin launi.

Ma'auni na Lantarki

Kalma	Alamar	Bayanin Sauri	Abubuwan ƙira
Ƙarfin lantarki na gaba	Vf	Mafi ƙarancin ƙarfin lantarki don kunna LED, kamar "maƙallan farawa".	Ƙarfin lantarki na injin dole ya zama ≥Vf, ƙarfin lantarki yana ƙara don LED a jere.
Ƙarfin lantarki na gaba	If	Ƙimar ƙarfin lantarki don aikin LED na yau da kullun.	Yawanci tuƙi mai ƙarfi akai-akai, ƙarfin lantarki yana ƙayyade haske da tsawon rai.
Matsakaicin Ƙarfin lantarki na bugun jini	Ifp	Matsakaicin ƙarfin lantarki mai jurewa na ɗan lokaci, ana amfani dashi don duhu ko walƙiya.	Fadin bugun jini da sake zagayowar aiki dole ne a sarrafa su sosai don guje wa lalacewa.
Ƙarfin lantarki na baya	Vr	Matsakaicin ƙarfin lantarki na baya da LED zai iya jurewa, wanda ya wuce zai iya haifar da rushewa.	Dangane dole ne ya hana haɗin baya ko ƙarfin lantarki.
Juriya na zafi	Rth (°C/W)	Juriya ga canja wurin zafi daga guntu zuwa solder, ƙasa yana da kyau.	Babban juriya na zafi yana buƙatar zubar da zafi mai ƙarfi.
Rigakafin ESD	V (HBM), misali 1000V	Ikon jurewa zubar da wutar lantarki, mafi girma yana nufin ƙasa mai rauni.	Ana buƙatar matakan hana wutar lantarki a cikin samarwa, musamman ga LED masu hankali.

Gudanar da Zafi & Amincewa

Kalma	Ma'aunin maɓalli	Bayanin Sauri	Tasiri
Zazzabin Haɗin gwiwa	Tj (°C)	Ainihin yanayin aiki a cikin guntun LED.	Kowane raguwa 10°C na iya ninka tsawon rai; yayi yawa yana haifar da lalacewar haske, canjin launi.
Ragewar Lumen	L70 / L80 (sa'o'i)	Lokacin da haske ya ragu zuwa 70% ko 80% na farko.	Kai tsaye yana ayyana "tsawon sabis" na LED.
Kula da Lumen	% (misali 70%)	Kashi na hasken da aka riƙe bayan lokaci.	Yana nuna riƙon haske akan amfani na dogon lokaci.
Canjin Launi	Δu′v′ ko ellipse MacAdam	Matsakaicin canjin launi yayin amfani.	Yana shafar daidaiton launi a cikin yanayin haskakawa.
Tsufa na Zafi	Lalacewar kayan aiki	Lalacewa saboda yanayin zafi na dogon lokaci.	Zai iya haifar da raguwar haske, canjin launi, ko gazawar buɗe kewaye.

Tufafi & Kayan Aiki

Kalma	Nau'ikan gama gari	Bayanin Sauri	Siffofi & Aikace-aikace
Nau'in Kunshin	EMC, PPA, Yumbu	Kayan gida masu kare guntu, samar da hanyar sadarwa ta gani/zafi.	EMC: juriya mai kyau na zafi, farashi mai rahusa; Yumbu: mafi kyawun zubar da zafi, tsawon rai.
Tsarin Guntu	Gaba, Guntu Juyawa	Tsarin na'urorin lantarki na guntu.	Juyawar guntu: mafi kyawun zubar da zafi, inganci mafi girma, don ƙarfi mai ƙarfi.
Rufin Phosphor	YAG, Silicate, Nitride	Yana rufe guntu shuɗi, yana canza wasu zuwa rawaya/ja, yana haɗa su zuwa fari.	Phosphor daban-daban suna shafar inganci, CCT, da CRI.
Ruwan tabarau/Optics	Lefi, Microlens, TIR	Tsarin gani a saman yana sarrafa rarraba haske.	Yana ƙayyade kusurwar dubawa da layin rarraba haske.

Kula da Inganci & Rarraba

Kalma	Abun rarraba	Bayanin Sauri	Manufa
Kwalin Gudun Hasken	Lambar misali 2G, 2H	An tattara su ta hanyar haske, kowace ƙungiya tana da ƙananan/matsakaicin ƙimar lumen.	Yana tabbatar da daidaiton haske a cikin jeri ɗaya.
Kwalin Ƙarfin lantarki	Lambar misali 6W, 6X	An tattara su ta hanyar kewayon ƙarfin lantarki na gaba.	Yana sauƙaƙe daidaitawar tuƙi, yana inganta ingancin tsarin.
Kwalin Launi	Ellipse MacAdam 5-mataki	An tattara su ta hanyar daidaitattun launi, yana tabbatar da ƙuntataccen kewayon.	Yana ba da garantin daidaiton launi, yana guje wa launi mara daidaituwa a cikin kayan aikin.
Kwalin CCT	2700K, 3000K da sauransu	An tattara su ta hanyar CCT, kowanne yana da madaidaicin kewayon daidaitawa.	Yana cika buƙatun CCT na yanayi daban-daban.

Gwaji & Takaddun Shaida

Kalma	Matsakaicin/Gwaji	Bayanin Sauri	Muhimmanci
LM-80	Gwajin kula da lumen	Haskakawa na dogon lokaci a yanayin zafi akai-akai, yana rikodin lalacewar haske.	Ana amfani dashi don kimanta rayuwar LED (tare da TM-21).
TM-21	Matsakaicin kimanta rayuwa	Yana kimanta rayuwa a ƙarƙashin yanayi na ainihi bisa bayanan LM-80.	Yana ba da hasashen kimiyya na rayuwa.
IESNA	Ƙungiyar Injiniyoyin Haskakawa	Yana rufe hanyoyin gwajin gani, lantarki, zafi.	Tushen gwaji da masana'antu suka amince.
RoHS / REACH	Tabbatarwar muhalli	Yana tabbatar da babu abubuwa masu cutarwa (darma, mercury).	Bukatar shiga kasuwa a duniya.
ENERGY STAR / DLC	Tabbatarwar ingancin kuzari	Tabbatarwar ingancin kuzari da aiki don samfuran haskakawa.	Ana amfani dashi a cikin sayayyan gwamnati, shirye-shiryen tallafi, yana haɓaka gasa.