67-21 Series Top View LED Datasheet - P-LCC-2 Package - Blue 468nm - 20mA 3.2V - 120° Viewing Angle

1. Mchanganuo wa Bidhaa

The 67-21 series is a type of top-view LED utilizing a compact P-LCC-2 surface-mount package. This series is designed to provide reliable optical indication performance for a wide range of electronic applications. The devices feature a colorless transparent window and a white package body, which helps enhance their optical efficiency and aesthetic versatility.

Its core design philosophy is to provide a wide viewing angle, achieved through optimized package geometry and an internal reflector. This characteristic makes the LED particularly suitable for applications employing light guide pillars, where uniform light distribution is crucial. Furthermore, the device operates at a low current, making it an ideal choice for power-sensitive applications such as portable and battery-powered devices.

Msururu huu unatoa rangi mbalimbali za mwanga, ikiwa ni pamoja na rangi nyororo ya machungwa, kijani, bluu na manjano. Aina maalum inayoelezewa kwa kina katika hati hii ni LED ya bluu inayotumia chip ya InGaN. Inaendana kabisa na vifaa vya kukusanyika kiotomatiki na mchakato wa kuuza kwa kutumia mvuke wa kawaida, na inasaidia uzalishaji mkubwa. Bidhaa hii haitumia risasi na inafuata viwango vya RoHS.

2. Ufafanuzi wa Vigezo vya Kiufundi

2.1 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 in circuit design.

• Reverse Voltage (V_R):5 V. Exceeding this voltage under reverse bias may cause junction breakdown.
• Continuous forward current (I_F):30 mA. The maximum DC current that can be continuously applied.
• Peak forward current (I_FP):100 mA. Allowed only under pulse conditions with a duty cycle of 1/10 and a frequency of 1 kHz.
• Power Dissipation (P_d):110 mW. Maximum power that the package can dissipate, calculated by the formula V_F* I_F.
• Electrostatic Discharge (ESD) HBM:1000 V. The device is sensitive to electrostatic discharge; proper handling procedures must be followed.
• Operating temperature (T_opr):-40°C to +85°C. The guaranteed ambient temperature range for reliable operation.
• Storage temperature (T_stg):-40°C hadi +90°C.
• Joto la kuchomelea:Kifaa kinaweza kustahimili joto la kilele la 260°C kwa sekunde 10 wakati wa kuchomelea tena, au 350°C kwa sekunde 3 wakati wa kuchomelea kwa mkono.

2.2 Electro-Optical Characteristics

Vigezo hivi vinapimwa chini ya hali za kawaida za majaribio: joto la mazingira (T_a) ni 25°C, mkondo wa mbele (I_F) ni 20 mA, isipokuwa ikibainishwa vinginevyo. Uvumilivu unatumika kama ulivyowekwa alama.

• Mwangaza wa mwanga (I_v):Anuwai kutoka chini ya 225 mcd hadi juu ya 565 mcd, na mkengeuko wa kawaida ni ±11%. Hii inafafanua mwangaza unaohisiwa wa LED.
• Pembe ya mtazamo (2θ_1/2):120 degrees (typical value). This is the full angle at which the luminous intensity drops to half of its peak value, indicating a very wide emission pattern.
• Peak wavelength (λ_P):468 nm (typical value). The wavelength at which the spectral power distribution reaches its maximum.
• Dominant wavelength (λ_d):Ranging from 464.5 nm to 476.5 nm, with a tolerance of ±1 nm. This wavelength corresponds to the perceived color of the light.
• Spectral Bandwidth (Δλ):25 nm (typical). The width of the emission spectrum at half its maximum power.
• Forward Voltage (V_F):At 20 mA, ranges from 2.70 V to 3.70 V, with a tolerance of ±0.1 V. This is the voltage drop across the LED when it is conducting.
• Reverse current (I_R):At a reverse voltage of 5V, the maximum is 50 μA.

3. Maelezo ya Mfumo wa Kugawa Daraja

To ensure consistency in brightness, color, and electrical characteristics, LEDs are sorted into different bins. The specific device code (e.g., /B7C-AS2U1N/2T) contains these bin codes.

3.1 Luminous Intensity Binning (CAT Code)

LED zinagawanywa kulingana na nguvu ya mwanga yao iliyopimwa chini ya 20 mA.

• S2:225 - 285 mcd
• T1:285 - 360 mcd
• T2:360 - 450 mcd
• U1:450 - 565 mcd

3.2 Dominant Wavelength Binning (HUE Code - Group A)

For blue LEDs, the dominant wavelength binning is as follows:

• A9:464.5 - 467.5 nm
• A10:467.5 - 470.5 nm
• A11:470.5 - 473.5 nm
• A12:473.5 - 476.5 nm

3.3 Forward Voltage Binning (REF Code - Group N)

LED pia hujumilishwa kulingana na kiwango cha voltage ya mbele kwenye 20 mA.

• 10:2.70 - 2.90 V
• 11:2.90 - 3.10 V
• 12:3.10 - 3.30 V
• 13:3.30 - 3.50 V
• 14:3.50 - 3.70 V

4. Performance Curve Analysis

Typical characteristic curves reveal the behavior of LEDs under different conditions.

4.1 Mkondo wa Mbele vs. Voltage ya Mbele (I-V Curve)

Mchoro unaonyesha uhusiano wa kawaida usio na mstari wa diode. Voltage ya mbele huongezeka kadri sasa inavyoongezeka, takriban 2.6V kwa sasa ndogo sana, na kufikia takriban 3.4V kwa 20mA. Mstari huu ni muhimu sana katika kubuni saketi za kudhibiti sasa.

4.2 Relative Luminous Intensity vs. Forward Current

The luminous intensity increases with the forward current, but not linearly. Due to the rise in junction temperature and efficiency droop, the curve tends to saturate at higher currents. This highlights the importance of driving the LED at or near its recommended current (20mA) for optimal efficiency.

4.3 Relative Luminous Intensity vs. Ambient Temperature

Pato la mwanga hupungua kadiri joto la mazingira linavyoongezeka. Chati inaonyesha kuwa, kwenye joto la juu la uendeshaji la +85°C, pato linaweza kuwa chini sana ikilinganishwa na lile la 25°C. Katika matumizi yenye joto la juu la mazingira, upungufu huu wa joto lazima uzingatiwe.

4.4 Spectral Distribution

The spectrum confirms blue emission with a peak at approximately 468 nm and a typical bandwidth of 25 nm. As expected for an InGaN-based blue LED, the spectrum is monochromatic.

4.5 Radiation Pattern

The polar plot visually confirms the wide viewing angle of 120°, showing a Lambertian-like emission pattern where the luminous intensity is fairly uniform over a wide angle before it decreases as the angle widens.

4.6 Forward Current Derating Curve

This curve specifies the allowable maximum continuous forward current as a function of ambient temperature. As temperature increases, the maximum safe operating current decreases to prevent exceeding the 110mW power dissipation limit and ensure long-term reliability.

5. Mechanical and Packaging Information

5.1 Package Dimensions (P-LCC-2)

The LED is in a surface-mount package. Key dimensions include body size, lead pitch, and overall height. All unspecified tolerances are ±0.1mm. This package is designed to maintain stability during reflow soldering and is compatible with standard 8mm carrier tape.

5.2 Polarity Identification

Cathode kawaida hutambuliwa kupitia alama ya kuona kwenye ufungaji, kama vile mwanya, nukta, au kivuli cha kijani kwenye upande wa cathode wa chip cavity. Lazima kuzingatia upeo sahihi wakati wa kukusanywa ili kuzuia uharibifu wa upendeleo wa nyuma.

5.3 Recommended PCB Pad Layout

It is recommended to adopt a pad layout design that can accommodate the package size and allow for the formation of proper solder fillet shapes. The pad layout should align with the package's thermal pad (if present) and electrical pads to ensure reliable mechanical and electrical connections.

6. Soldering and Assembly Guide

6.1 Reflow Soldering Temperature Profile

Kifaa hiki kinafaa kwa reflow soldering ya gesi na infrared. Mkunjo wa kawaida wa joto usio na risasi umebainishwa, na kiwango cha juu cha joto hakizidi 260°C kwa muda wa sekunde 10. Wakati juu ya mstari wa kioevu (k.m., 217°C) unapaswa kudhibitiwa ili kupunguza msongo wa joto kwa kipengele.

6.2 Manual Soldering

If manual soldering is necessary, the soldering iron tip temperature should be limited to 350°C, and the contact time per pin should not exceed 3 seconds. Use a low-power soldering iron and avoid applying mechanical stress to the package.

6.3 Moisture Sensitivity and Storage

LED包装在带有干燥剂的防潮阻隔袋中，以防止吸湿，吸湿可能在回流焊期间导致“爆米花”现象。一旦密封袋打开，应在规定的时间范围内（例如，在<30°C/60%RH条件下168小时）使用元件，或根据标准IPC/JEDEC指南重新烘烤。

7. Packaging and Ordering Information

7.1 Tape and Reel Specifications

Components are supplied in 8mm wide embossed carrier tape. The reel dimensions and pocket pitch are standardized for compatibility with automatic feeders. The standard loading quantity is 2000 pieces per reel, with minimum order quantities of 250, 500, 1000, or 2000 pieces.

7.2 Habari ya Lebo

The reel label contains key information for traceability and identification, including: Part Number (PN), Customer Part Number (CPN), Quantity (QTY), Lot Number, as well as specific bin codes for Luminous Intensity (CAT), Dominant Wavelength (HUE), and Forward Voltage (REF).

8. Mapendekezo ya Matumizi

8.1 Mandhari ya Kawaida ya Utumizi

• Automotive Electronics:Backlighting for dashboard instruments, switches, and control panels.
• Vifaa vya Mawasiliano:Viashiria vya hali na taa za nyuma za kibodi katika simu, mashine za faksi na vifaa vya mtandao.
• Elektroniki za Matumizi ya Kaya:Power/status indicators, LCD display backlights, symbols, and membrane switch backlights in household appliances, audio/video equipment, and computer peripherals.
• General indication.Any application requiring bright, reliable, low-power status indication.

8.2 Mambo ya Kuzingatia katika Uundaji wa Light Guide

Pembe ya kuona ya 120° ndio faida kuu ya matumizi ya Light Pipe. Ili kupata ufanisi bora wa kuunganisha:

• Weka LED karibu iwezekanavyo na mlango wa Light Pipe.
• Hakikisha nyenzo za mwongozo wa mwanga zina uwiano wa juu wa kupitishia mwanga, na zimeundwa kuongoza na kutawanya mwanga kwa ufanisi.
• Wakati wa kubuni umbo la kijiometri la uso wa kuingiza wa mwongozo wa mwanga, zingatia mchoro wa mionzi wa LED.

8.3 Mambo Muhimu ya Ubunifu wa Saketi

• Daima tumia Upinzani wa Kikomo cha Mfululizo. Kulingana na Voltage ya Usambazaji (V_CC), Voltage ya Mbele ya LED (V_F - Kwa kuaminika tumia thamani ya juu zaidi) na mkondo wa mbele unaohitajika (I_F) hesabu upinzani wake. Fomula: R = (V_CC- V_F) / I_F.
• Ili kudumisha mwangaza thabiti katika anuwai ya voltage ya usambazaji au joto, fikiria kutumia kiendesha cha mkondo wa kudumu badala ya upinzani rahisi.
• Zingatia viwango vya juu kabisa, hasa voltage ya nyuma. Ikiwa mzunguko unaweza kushambuliwa na mipigo ya voltage au uunganishaji wa nyuma, chukua hatua za ulinzi (kwa mfano, ongeza diode sambamba ya nyuma).

9. Ulinganisho wa Teknolojia na Tofauti

Mfululizo wa 67-21 unajitokeza katika soko la SMD indicator LED kupitia sifa zifuatazo muhimu:

• Pembe ya kuona bora:Pembe ya kuona ya 120° ni pana wazi kuliko SMD LED nyingi za kawaida (ambazo huwa na 60-80°), ikitoa mwonekano sawasawa zaidi kutoka kwa pembe zisizo za mhimili, jambo muhimu kwa viashiria vya paneli.
• Optimization for Light Guide Rods:The package design with internal reflectors is specifically tuned for efficient coupling of light into light guides, a common requirement in modern industrial and consumer product design.
• Low Current Operation:Its specification at 20mA (with good brightness) makes it more energy-efficient than LEDs requiring higher drive currents for similar output, benefiting extended battery life.
• Robust Binning System:A detailed binning system for intensity, wavelength, and voltage allows designers to select products with tight performance tolerances, ensuring consistency in the final product, especially in multi-LED arrays.

10. Maswali Yanayoulizwa Mara kwa Mara (Kulingana na Vigezo vya Kiufundi)

10.1 When using a 5V power supply, what resistance value should be selected?

Kwa muundo wa kihafidhina, tumia V ya juu zaidi_F thamani 3.7V, lengo I_F For 20mA: R = (5V - 3.7V) / 0.02A = 65 ohms. The closest standard value is 68 ohms. Recalculating: I_F= (5V - 3.7V) / 68Ω ≈ 19.1 mA, which is safe and within specifications. Be sure to verify the actual current in the circuit.

10.2 Can this LED be driven using a 3.3V power supply?

Yes, but careful calculation is required. Using the typical V_F At 3.2V: R = (3.3V - 3.2V) / 0.02A = 5 ohms. This very low resistance makes the current highly sensitive to variations in V_F and V_CC . A slight drop in V_CC or V_F Kwa hali ya shinikizo la chini la ziada, inashauriwa sana kutumia kiendesha cha mkondo wa mara kwa mara, kwani ongezeko lolote linaweza kusababisha LED kuzima.

10.3 Kwa nini safu ya nguvu ya mwanga ni pana sana (225-565 mcd)?

Hii ni anuwai ya jumla inayowezekana kwa mfululizo mzima wa bidhaa na viwango vyote vya kugawanya. LED moja-moja hugawanywa katika vikundi maalum (S2, T1, T2, U1). Unaponunua, unabainisha kiwango cha nguvu ya mwanga unachohitaji (k.m., U1 inawakilisha mwangaza wa juu zaidi) ili kupata anuwai nyembamba zaidi (450-565 mcd). Hii inaruhusu uboreshaji wa gharama na ulinganifu wa utendaji.

10.4 Jinsi Joto Linavyoathiri Utendaji?

Kama inavyoonyeshwa kwenye mkunjo wa utendaji, ongezeko la joto la mazingira hupunguza pato la mwanga (ufanisi hupungua), na huongeza kidogo voltage ya mbele. Katika hali ya joto kali, upeo wa sasa unaoruhusiwa unaoendelea pia hupungua. Kwa matumizi yanayofanya kazi katika hali ya joto kali ya mazingira (kwa mfano, ndani ya dashibodi ya gari), muundo unapaswa kuzingatia data ya utendaji kwenye joto la kazi linalotarajiwa, na sio tu data ya 25°C.

11. Miundo Halisi na Mifano ya Matumizi

11.1 Designing a Multi-LED Status Indicator Panel

Scenario:Udhibiti wa paneli unahitaji taa 10 za hali ya bluu. Usawa wa mwangaza na rangi ni muhimu sana kwa uzoefu wa mtumiaji.

Mpango wa utekelezaji:

1. Uchaguzi wa viwango:Assign the same luminous intensity bin (e.g., T2: 360-450 mcd) and dominant wavelength bin (e.g., A10: 467.5-470.5 nm) to all 10 LEDs to ensure visual consistency.
2. Circuit Design:Use a 12V power supply. Drive the 10 LEDs in parallel with individual resistors: according to the maximum V_F=3.7V, I_F=20mA to calculate the resistance. R = (12V - 3.7V) / 0.02A = 415 ohms. Use 430 ohms (standard value). Power per resistor: P = I²R = (0.02)²* 430 = 0.172W. Use 1/4W resistors. Total supply current: 10 * 20mA = 200mA.
3. PCB layout:Place LEDs in a consistent orientation. Ensure the cathode marking on the PCB silkscreen matches the LED footprint. Provide sufficient copper foil for the common power trace carrying 200mA.
4. Light Guide:If using a light guide, model the light guide entry to capture the LED's 120° emission cone. Use optical-grade PC or acrylic material.

12. Brief Introduction to Working Principles

Mfululizo wa LED 67-21 ni chanzo cha mwanga thabiti kinachotegemea makutano ya nusu-uwazi p-n. Eneo lenye ufanisi linatumia nyenzo ya nusu-uwazi ya mchanganyiko wa InGaN, ambayo hukua kwa njia ya epitaksia kwenye kisubstrati. Unapotumia voltage chanya inayozidi kizingiti cha diode, elektroni na mashimo huingizwa kwenye eneo lenye ufanisi na kujumlishwa humo. Katika nusu-uwazi yenye pengo la moja kwa moja kama InGaN, tukio hili la kujumlishwa hutoa nishati kwa njia ya fotoni (mwanga). Urefu maalum wa wimbi (rangi) wa mwanga unaotolewa, kwa mfano huu bluu (~468 nm), umedhamiriwa na nishati ya pengo la bandi ya nyenzo ya InGaN, ambayo inaweza kurekebishwa kwa kubadilisha maudhui ya indiamu wakati wa ukuaji wa fuwele. Mwanga unaotokana huchukuliwa kupoka kwenye kuba la epoksi lenye uwazi lisilo na rangi, ambalo pia hutumika kama lenzi, na kikokotoo cha ndani husaidia kuongoza mwanga katika muundo mpana wa utoaji.

13. Technical Trends and Background

LEDs in P-LCC and similar surface-mount packages represent the mainstream for indicator applications, having largely replaced through-hole LEDs in modern electronics due to their compatibility with automated assembly and smaller footprint. Trends within this field include:

• Higher Efficiency:Kuongeza pato la lumens kwa kila watt, kuruhusu mwangaza wa kutosha kwa chini ya mkondo wa kuendesha, na hivyo kupunguza zaidi matumizi ya nishati.
• Kupunguza ukubwa:Kupunguza kwa mfululizo ukubwa wa ufungaji (mfano, kutoka 0603 hadi 0402 metric size) huku ukidumisha au kuboresha utendaji wa macho.
• Udhibiti ulioimarishwa wa macho:Kwa kutumia muundo tata zaidi wa ufungaji, unaounganisha lenzi, vikunjia mwanga na vifaa vya kusambaza mwanga, kuzalisha moja kwa moja mifumo maalum ya mwanga (upana sana, mtazamo wa upande, uliyolenga), kupunguza hitaji la vifaa vya mwanga vya sekondari.
• Anuwai ya Rangi Pana na Uthabiti:Mapungufu madogo ya kikundi na teknolojia ya fosforesheni iliyoboreshwa (kwa LED nyeupe) yanahakikisha uthabiti wa nukta ya rangi katika mfululizo wa uzalishaji na maisha ya kifaa.
• Improved reliability and robustness:Enhanced materials and packaging technologies to withstand higher soldering temperatures, harsher environmental conditions, and provide better ESD protection.

The 67-21 series focuses on wide viewing angle and light pipe compatibility, aligning well with the trend of integrating discrete indicator lights into sleek, modern product designs where the light source itself is often hidden and not directly visible.