PLCC-2 琥珀色LED規格書 - 螢光粉轉換琥珀色 - 120°視角 - 3.0V @ 20mA - 汽車級別

1. 產品概覽

呢份文件詳細說明咗一款採用PLCC-2封裝、高可靠性嘅表面貼裝LED嘅規格。呢個元件發出螢光粉轉換琥珀色光，喺20毫安正向電流驅動下，典型光度為900毫燭光。佢嘅主要設計重點係汽車內飾應用，呢啲應用要求性能穩定、長期可靠，同埋符合嚴格嘅行業標準。

呢款LED具備120度嘅寬廣視角，好適合需要喺大範圍內提供均勻照明嘅應用，例如開關同儀錶板嘅背光。佢通過咗汽車應用離散光電半導體嘅AEC-Q102標準認證，確保符合車輛使用嘅嚴格質量同可靠性要求。此外，產品符合RoHS、REACH同無鹵素規格等環保指令，符合現代製造同生態標準。

2. 深入技術參數分析

2.1 光度同電氣特性

核心操作參數定義喺20毫安正向電流同25°C環境溫度嘅典型條件下。正向電壓典型值為3.0伏特，指定範圍由2.5伏特到3.5伏特。呢個參數對於設計驅動電路同確保穩定供電至關重要。_F主要光度輸出係光度，典型值為900 mcd。呢個特定型號嘅最小同最大限值分別係560 mcd同1400 mcd。要注意光度嘅測量公差係±8%。主導色度座標指定為，公差為±0.005，確保唔同生產批次嘅琥珀色輸出保持一致。_F2.2 絕對最大額定值同熱管理

喺呢啲限值之外操作可能會導致永久損壞。絕對最大連續正向電流係30 mA，最大功耗為75 mW。對於短脈衝，元件可以承受高達250 mA嘅浪湧電流。結溫唔可以超過125°C，工作溫度範圍係-40°C到+110°C。_V熱管理對於LED性能同壽命好關鍵。規格書指定咗兩個熱阻值：最大實際熱阻為160 K/W，最大電氣熱阻為120 K/W。呢啲數值代表由半導體結到焊點嘅熱阻抗，指導散熱設計。正向電流降額曲線清楚顯示，隨著焊盤溫度升高，最大允許連續電流必須降低，喺110°C時降至27 mA。

3. 分級系統說明

為咗管理生產差異，LED會根據關鍵參數分級。理解呢個系統對於設計一致性好重要。_FM3.1 光度分級_J光度使用字母數字代碼系統分級，範圍由L1到GA。對於呢個特定型號，可能嘅輸出級別突出顯示喺V1同V2範圍內，典型值900 mcd位於邊界。_{3.2 色度同正向電壓分級}螢光粉轉換琥珀色定義喺CIE色度圖嘅特定區域內。提供嘅分級結構顯示咗代碼嘅座標，定義咗琥珀色發光嘅允許色域。正向電壓亦都分級，代碼如2527、2730同3032，喺I=20mA下測量。典型值3.0V屬於2730級別。

4. 性能曲線分析_{規格書包含幾幅圖表，描述電氣、熱同光學參數之間嘅關係。}4.1 電氣同光學關係_{正向電流 vs. 正向電壓圖表顯示經典嘅二極管指數特性。相對光度 vs. 正向電流曲線喺典型20mA點之前幾乎係線性，表示喺正常工作範圍內效率穩定。色度座標偏移 vs. 正向電流圖表顯示顏色隨電流變化嘅變化極小，對於穩定顏色輸出係理想嘅。}4.2 溫度依賴性

溫度對LED性能影響好大。相對正向電壓 vs. 結溫曲線顯示負溫度係數，V隨溫度升高線性下降。呢個特性有時可以用於溫度感測。相反，相對光度 vs. 結溫曲線顯示光輸出隨溫度升高明顯下降，呢個現象稱為熱衰減。因此，有效嘅熱設計對於保持亮度好關鍵。色度座標偏移 vs. 結溫圖表顯示，同電流變化相比，顏色隨溫度嘅偏移更明顯，喺高精度顏色應用中必須考慮呢點。

4.3 光譜同輻射圖案

波長特性圖表顯示螢光粉轉換琥珀光嘅相對光譜功率分佈，通常喺黃琥珀區域有一個寬峰。典型輻射圖案特性說明空間強度分佈，確認咗120°嘅寬廣視角，喺離軸±60°時強度降至峰值嘅一半。

5. 機械、組裝同包裝資訊

5.1 物理尺寸同極性

元件封裝喺標準PLCC-2表面貼裝封裝內。機械圖提供咗本體長度、寬度、高度同引腳間距嘅精確尺寸。陰極通常由封裝上嘅視覺標記識別，例如凹口、圓點或斜角，圖中清晰標示。組裝期間正確嘅方向至關重要。_F5.2 焊接同回流焊指南

提供咗推薦嘅焊盤佈局，以確保可靠嘅焊點形成同適當嘅機械穩定性。根據提供嘅回流焊曲線圖，元件適用於峰值溫度260°C、最長30秒嘅回流焊。呢個曲線定義咗關鍵區域：預熱、保溫、回流同冷卻。遵循呢個曲線可以防止對LED封裝同內部晶片造成熱損壞。

5.3 包裝同處理

LED以帶狀同捲盤形式供應，兼容自動貼片組裝設備。包裝資訊詳細說明咗捲盤尺寸、帶寬、口袋間距同元件喺帶上嘅方向。濕度敏感等級為3級，意味著封裝喺需要烘烤前，可以暴露喺工廠環境條件下長達168小時。建議按照IPC/JEDEC標準進行適當處理，以避免回流焊期間因濕氣造成損壞。

6. 應用說明同設計考慮6.1 主要應用場景呢款LED專為汽車內飾照明而設計。包括但不限於：開關同控制背光：波棍選擇器、車窗開關、空調控制面板。儀錶板照明：儀錶同警告指示燈背光。一般環境照明：腳部空間燈、杯架照明同其他車廂裝飾照明。琥珀色通常被選中，因為佢夜晚感知眩光較低，而且傳統上用於警告/指示功能。6.2 電路設計同注意事項同所有LED一樣，電流調節係必須嘅；元件應該由恆流源驅動，唔係恆壓源，以確保穩定嘅光輸出同防止熱失控。使用電壓源時，串聯限流電阻係最簡單嘅方法。驅動電路必須遵守絕對最大額定值，包括反向電壓限制。處理同組裝期間應實施靜電放電保護措施，因為元件嘅ESD敏感度為8kV。規格書亦包括特定嘅使用注意事項同硫磺測試標準，強調喺含有硫化氫等腐蝕性氣體嘅惡劣環境中可能出現嘅故障模式，呢啲氣體會侵蝕鍍銀引腳。對於可能遇到呢類環境嘅汽車應用尤其相關。7. 技術比較同市場背景同非汽車級LED相比，呢款元件嘅主要區別在於佢嘅AEC-Q102認證、擴展嘅工作溫度範圍，以及針對汽車環境嘅增強可靠性測試。螢光粉轉換琥珀色技術相比一啲傳統琥珀色晶片LED，提供更一致同飽和嘅顏色，對驅動電流同溫度變化有更好嘅耐受性。PLCC-2封裝喺緊湊尺寸同改善熱性能之間取得良好平衡，因為佢嘅散熱墊面積比0402或0603等更細封裝更大。

8. 常見問題

問：實際熱阻同電氣熱阻有咩分別？答：電氣Rth係根據溫度敏感電氣參數計算得出，而實際Rth可能用物理傳感器測量。電氣值通常較低；設計師應該使用更保守嘅實際Rth值160 K/W進行最壞情況熱設計。問：我可唔可以連續用30mA驅動呢款LED？答：雖然30mA係絕對最大額定值，但唔建議喺呢個電流下連續操作。請參考正向電流降額曲線。喺升高嘅焊盤溫度下，最大允許連續電流明顯低於30mA。設計時使用典型20mA或更低電流，以確保壽命同可靠性。問：訂購時點樣解讀光度分級代碼？答：型號指定咗特定嘅分級組合。要請求唔同光度或顏色分級，你需要查閱訂購資訊或聯繫供應商，獲取對應產品系列內所需V1、V2或其他分級嘅特定後綴代碼。_F9. 設計案例研究考慮設計汽車中控台開關面板嘅背光。設計要求喺多個按鈕上提供均勻、低眩光嘅照明。使用呢款PLCC-2琥珀色LED，120°寬廣視角有助於光線喺擴散器下均勻分佈。設計一個恆流驅動電路，為每個LED提供18mA，提供安全裕度並降低結溫。PCB佈局嘅熱分析確保喺最壞情況車廂環境溫度下，焊盤溫度保持喺85°C以下，令LED保持喺降額電流限值內。AEC-Q102認證提供咗對元件承受汽車振動同溫度循環能力嘅信心。10. 技術原理同趨勢原理：呢款係螢光粉轉換LED。佢可能使用藍色或近紫外半導體晶片。一部分原色光被陶瓷或矽膠基螢光粉層吸收，然後以更長波長重新發射光。剩餘原色光同螢光粉轉換光結合，產生感知嘅琥珀色。呢種方法通常比使用直接發射琥珀色半導體材料提供更好嘅顏色一致性同穩定性。趨勢：汽車照明市場持續要求更高可靠性、更高效率同小型化。有更高集成度嘅趨勢，例如內置驅動器或控制IC嘅LED。此外，對先進駕駛輔助系統同自動駕駛汽車嘅推動，增加咗LED喺內飾感測應用中嘅使用，呢啲可能會推動對特定光譜輸出或調製能力嘅要求。環保合規性仍然係整個行業強勁且不容談判嘅趨勢。

.3 Spectral and Radiation Patterns

TheWavelength Characteristicsgraph shows the relative spectral power distribution of the phosphor-converted amber light, typically featuring a broad peak in the yellow-amber region. TheTypical Diagram Characteristics of Radiationillustrates the spatial intensity distribution, confirming the wide 120° viewing angle where intensity drops to half of its peak value at ±60° off-axis.

. Mechanical, Assembly, and Packaging Information

.1 Physical Dimensions and Polarity

The component is housed in a standard PLCC-2 (Plastic Leaded Chip Carrier) surface-mount package. The mechanical drawing provides precise dimensions for the body length, width, height, and lead spacing. The cathode is typically identified by a visual marker such as a notch or a dot on the package, or a chamfered corner, which is clearly indicated in the drawing. Correct orientation during assembly is vital.

.2 Soldering and Reflow Guidelines

A recommended solder pad layout (land pattern) is provided to ensure reliable solder joint formation and proper mechanical stability. The device is rated for reflow soldering with a peak temperature of 260°C for a maximum of 30 seconds, as per the provided reflow soldering profile graph. This profile defines the critical zones: preheat, soak, reflow (with time above liquidus), and cooling. Adherence to this profile prevents thermal damage to the LED package and internal die.

.3 Packaging and Handling

The LEDs are supplied on tape and reel for compatibility with automated pick-and-place assembly equipment. Packaging information details the reel dimensions, tape width, pocket spacing, and orientation of components on the tape. The Moisture Sensitivity Level (MSL) is rated at 3, meaning the package can be exposed to factory floor conditions (≤ 30°C / 60% RH) for up to 168 hours before requiring baking. Proper handling per IPC/JEDEC standards is recommended to avoid moisture-induced damage during reflow.

. Application Notes and Design Considerations

.1 Primary Application Scenarios

This LED is explicitly designed forAutomotive Interior Lighting. This includes, but is not limited to:

• Backlighting for Switches and Controls:Gear selectors, window switches, climate control panels.
• Instrument Cluster Illumination:Backlighting for gauges and warning indicators.
• General Ambient Lighting:Footwell lights, cupholder illumination, and other cabin accent lighting.

.2 Circuit Design and Precautions

As with all LEDs, current regulation is mandatory; the device should be driven by a constant current source, not a constant voltage source, to ensure stable light output and prevent thermal runaway. A series current-limiting resistor is the simplest method when using a voltage supply. The driver circuit must respect the absolute maximum ratings, including the reverse voltage limitation (the device is not designed for reverse operation).

Electrostatic Discharge (ESD) protection measures should be implemented during handling and assembly, as the device has an ESD sensitivity of 8kV (Human Body Model). The datasheet also includes specificPrecautions for UseandSulfur Test Criteria, highlighting potential failure modes in harsh environments containing corrosive gases like hydrogen sulfide, which can attack silver-plated leads. This is particularly relevant for automotive applications where such environments may be encountered.

. Technical Comparison and Market Context

Compared to non-automotive grade LEDs, this device's key differentiators are its AEC-Q102 qualification, extended operating temperature range (-40°C to +110°C), and enhanced reliability testing for automotive environments. The Phosphor Converted Amber technology offers a more consistent and saturated color compared to some traditional amber chip LEDs, with better tolerance to drive current and temperature variations. The PLCC-2 package provides a good balance between a compact footprint and improved thermal performance over smaller packages like 0402 or 0603, due to its larger thermal pad area.

. Frequently Asked Questions (FAQ)

Q: What is the difference between real and electrical thermal resistance (R_{th JS})?

A: The electrical R_this calculated from the temperature-sensitive electrical parameter (the forward voltage), while the real R_thmight be measured with a physical sensor. The electrical value is often lower; designers should use the more conservative (higher) real R_thvalue of 160 K/W for worst-case thermal design.

Q: Can I drive this LED at 30mA continuously?

A: While 30mA is the absolute maximum rating, continuous operation at this current is not recommended. Refer to the forward current derating curve. At an elevated solder pad temperature (e.g., 80°C), the maximum allowable continuous current is significantly lower than 30mA. Design for the typical 20mA or lower to ensure longevity and reliability.

Q: How do I interpret the luminous intensity bin code for ordering?

A> The part number 65-11-PA0200H-AM specifies a particular bin combination. To request a different intensity or color bin, you would need to consult the ordering information or contact the supplier for the specific suffix codes that correspond to the desired V1, V2, or other bins within the product family.

. Design-in Case Study

Consider designing backlighting for an automotive center console switch panel. The design requires uniform, low-glare illumination across multiple buttons. Using this PLCC-2 amber LED, the wide 120° viewing angle helps spread light evenly under a diffuser. A constant-current driver circuit is designed to supply 18mA (slightly below the 20mA typical) to each LED, providing a safety margin and reducing junction temperature. Thermal analysis of the PCB layout ensures the solder pad temperature remains below 85°C in the worst-case ambient cabin temperature (70°C), keeping the LEDs within the derated current limits. The AEC-Q102 qualification provides confidence in the component's ability to withstand automotive vibration and temperature cycling.

. Technology Principle and Trends

Principle:This is a Phosphor Converted LED. It likely uses a blue or near-UV semiconductor die. A portion of the primary light is absorbed by a ceramic or silicone-based phosphor layer, which re-emits light at longer wavelengths. The combination of the remaining primary light and the phosphor-converted light results in the perceived amber color. This method often provides better color consistency and stability than using a direct-emitting amber semiconductor material.

Trends:The automotive lighting market continues to demand higher reliability, greater efficiency (lumens per watt), and miniaturization. There is a trend towards higher integration, such as LEDs with built-in drivers or control ICs. Furthermore, the push for advanced driver assistance systems (ADAS) and autonomous vehicles is increasing the use of LEDs for interior sensing applications (e.g., driver monitoring), which may drive requirements for specific spectral outputs or modulation capabilities. Environmental compliance (RoHS, REACH, halogen-free) remains a strong and non-negotiable trend across the industry.