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LED Component Datasheet - Lifecycle Phase Revision 2 - Technical Documentation

Technical datasheet detailing the lifecycle phase, revision history, and release information for an LED component. Focuses on revision control and documentation standards.
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PDF Document Cover - LED Component Datasheet - Lifecycle Phase Revision 2 - Technical Documentation

1. Product Overview

This technical document provides comprehensive specifications and lifecycle information for a light-emitting diode (LED) component. The primary focus of the provided data is the formal documentation of the component's revision history and its established lifecycle phase. This information is critical for engineers, procurement specialists, and quality assurance teams to ensure traceability, version control, and compliance with manufacturing and design standards. Understanding the revision status is essential for maintaining consistency in production runs and for troubleshooting issues related to specific component batches.

The core advantage of this detailed lifecycle tracking is enhanced supply chain management and product reliability. By clearly marking each revision, manufacturers and integrators can accurately track changes, perform effective root cause analysis, and manage end-of-life (EOL) processes. The target market includes industries requiring high reliability and documentation, such as automotive lighting, industrial automation, consumer electronics, and general illumination where consistent performance is paramount.

2. Technical Parameters and Lifecycle Data

The provided PDF content centers on administrative and lifecycle metadata rather than traditional performance parameters. A deep, objective analysis of this data is crucial for proper component management.

2.1 Lifecycle Phase and Revision Information

The data consistently indicates a Lifecycle Phase: Revision with a value of 2. This signifies that the component is in an active, revised state. It is not a prototype (Phase 0), an initial release (Phase 1), nor is it obsolete. The revision number '2' indicates this is the second major or minor revision of the component's documentation or specifications since its initial release. Changes from revision 1 to revision 2 could encompass modifications to electrical tolerances, optical characteristics, material composition, recommended soldering profiles, or mechanical dimensions.

2.2 Validity and Release Data

The Expired Period is stated as Forever. This is an atypical designation in datasheets, which more commonly list an obsolescence date or a "Not Applicable" status. "Forever" in this context likely implies that this specific revision of the document has no planned expiration and remains valid indefinitely, or until superseded by a new revision. It underscores the permanence of this revision's specifications in the official record.

The Release Date is uniformly recorded as 2013-10-23 17:43:22.0. This timestamp is critical. It marks the official moment this Revision 2 document was issued and became the controlling specification. All components manufactured or sourced after this date should conform to the specifications contained in this revision. This date allows for precise historical tracking and is essential for auditing and qualifying components used in long-lifecycle products.

3. Interpretation of Repeated Data and Structure

The PDF content shows the same data block repeated multiple times, interspersed with bullet symbols (•, ●) and ellipsis sequences (‧). A professional analysis suggests this structure represents one of several scenarios:

The key technical takeaway remains the unambiguous definition of the component's revision state and its release timeline.

4. Implications for Sourcing and Manufacturing

4.1 Bin and Grading System Implications

While the provided snippet lacks explicit binning details (wavelength, flux, voltage), the existence of a formal Revision 2 implies that the manufacturer's internal grading and testing specifications are stable and documented. Engineers must ensure that the bin codes and performance ranges they specify in their Bill of Materials (BOM) align with the capabilities defined in this revision. Using an older revision's binning table could lead to mismatches in color temperature or brightness in the final product.

4.2 Performance Curve and Specification Compliance

All performance curves (I-V characteristics, temperature vs. luminous flux, spectral distribution) referenced for this component are defined by the specifications locked in at Revision 2, released on 2013-10-23. Any prior data sheets (Revision 1 or earlier) are obsolete for qualifying new production. Testing and validation procedures must use the benchmarks set forth in this revision.

5. Mechanical, Assembly, and Handling Considerations

5.1 Package and Dimensions

The revision number may correlate with a specific mechanical package. While dimensions are not in the snippet, the revision could encapsulate tolerances for length, width, height, lead frame design, or lens geometry. The mechanical drawing referenced should be the one released or updated as part of Revision 2.

5.2 Soldering and Assembly Guidelines

The recommended reflow soldering profile (preheat, soak, reflow peak temperature, time above liquidus) is defined by the component's package and material set as specified in Revision 2. Adherence to these guidelines is necessary to prevent thermal damage, ensure solder joint reliability, and maintain optical integrity. The "Forever" expired period suggests these soldering parameters are considered robust and unlikely to change for this package type.

5.3 Storage and Packaging

Standard moisture sensitivity level (MSL) ratings and storage conditions (typically <40°C and <60% relative humidity) apply. The packaging format (tape-and-reel, tray) and associated specifications (tape width, pocket spacing, reel diameter) are also part of the controlled documentation under this revision.

6. Application Design and Technical Comparisons

6.1 Typical Application Scenarios

A component with a well-defined and permanent revision status is suitable for applications requiring long-term stability and sourcing. These include:

6.2 Design Considerations and Best Practices

6.3 Comparison with Generic/Unspecified Components

The primary differentiator is documentation and traceability. A component with a clear Revision 2 and release date offers:

7. Frequently Asked Questions (FAQs)

Q1: What does "LifecyclePhase: Revision : 2" mean for my existing inventory?
A1: It means the official specification for the components you have is now defined by Revision 2. If your inventory was purchased after 2013-10-23, it should conform to Rev. 2. If purchased before, it conforms to the previous revision. For continuity, it is advisable to qualify your application against Rev. 2 specs.

Q2: The Expired Period is "Forever." Does this mean the component will never be obsolete?
A2: Not necessarily. "Forever" likely refers to the validity of this specific document revision, not the component's production life. The manufacturer can still issue a Revision 3 or declare the component End-of-Life (EOL) with a separate notification. Always monitor manufacturer communications for PCNs (Product Change Notices).

Q3: How do I obtain the full technical datasheet for Revision 2?
A3: The provided snippet is metadata. The complete datasheet containing all electrical, optical, thermal, and mechanical specifications should be requested from the component supplier or manufacturer, specifically referencing "Revision 2, released 2013-10-23."

Q4: Can I use this revision's data for safety-critical applications?
A4: The revision control itself is a positive indicator of formal documentation. However, suitability for safety-critical applications (automotive, medical, aerospace) depends on the specific qualifications and certifications (AEC-Q102, ISO 13485, etc.) undertaken by the manufacturer for this component, which should be detailed in separate qualification reports.

8. Practical Use Case

Scenario: Designing a new LED backlight for an industrial control panel.
The design team selects this LED. They note the Revision 2 and release date. In their design documentation, they explicitly cite "LED Model X, per Datasheet Revision 2 (2013-10-23)." They use the Vf and If from the full Rev. 2 datasheet to design the constant-current driver. They specify the bin code for color temperature from the Rev. 2 binning table to the contract manufacturer (CM). When the CM sources parts, they request components certified to Rev. 2. During assembly, the CM uses the reflow profile from the Rev. 2 datasheet. This end-to-end traceability ensures the final product's backlight uniformity and longevity match the design intent.

9. Technical Principles and Trends

9.1 Principle of Revision Control in Component Manufacturing

Revision control is a fundamental quality management practice. It involves systematically managing changes to a product's design and documentation. Each revision represents a snapshot of agreed-upon specifications. Changes are made to improve performance, yield, reliability, or cost, and are documented to maintain transparency. This process prevents "specification drift" and ensures all stakeholders (design, manufacturing, quality, customers) are aligned on what constitutes the product.

9.2 Industry Trends in Component Documentation

The trend is towards digitalization and granular traceability. While a PDF datasheet with a revision number is standard, there is a move towards:

The data in this PDF, a revision-stamped document from 2013, represents the foundational layer of this ecosystem—clear, human-readable documentation establishing a baseline for all future traceability and analysis.

LED Specification Terminology

Complete explanation of LED technical terms

Photoelectric Performance

Term Unit/Representation Simple Explanation Why Important
Luminous Efficacy lm/W (lumens per watt) Light output per watt of electricity, higher means more energy efficient. Directly determines energy efficiency grade and electricity cost.
Luminous Flux lm (lumens) Total light emitted by source, commonly called "brightness". Determines if the light is bright enough.
Viewing Angle ° (degrees), e.g., 120° Angle where light intensity drops to half, determines beam width. Affects illumination range and uniformity.
CCT (Color Temperature) K (Kelvin), e.g., 2700K/6500K Warmth/coolness of light, lower values yellowish/warm, higher whitish/cool. Determines lighting atmosphere and suitable scenarios.
CRI / Ra Unitless, 0–100 Ability to render object colors accurately, Ra≥80 is good. Affects color authenticity, used in high-demand places like malls, museums.
SDCM MacAdam ellipse steps, e.g., "5-step" Color consistency metric, smaller steps mean more consistent color. Ensures uniform color across same batch of LEDs.
Dominant Wavelength nm (nanometers), e.g., 620nm (red) Wavelength corresponding to color of colored LEDs. Determines hue of red, yellow, green monochrome LEDs.
Spectral Distribution Wavelength vs intensity curve Shows intensity distribution across wavelengths. Affects color rendering and quality.

Electrical Parameters

Term Symbol Simple Explanation Design Considerations
Forward Voltage Vf Minimum voltage to turn on LED, like "starting threshold". Driver voltage must be ≥Vf, voltages add up for series LEDs.
Forward Current If Current value for normal LED operation. Usually constant current drive, current determines brightness & lifespan.
Max Pulse Current Ifp Peak current tolerable for short periods, used for dimming or flashing. Pulse width & duty cycle must be strictly controlled to avoid damage.
Reverse Voltage Vr Max reverse voltage LED can withstand, beyond may cause breakdown. Circuit must prevent reverse connection or voltage spikes.
Thermal Resistance Rth (°C/W) Resistance to heat transfer from chip to solder, lower is better. High thermal resistance requires stronger heat dissipation.
ESD Immunity V (HBM), e.g., 1000V Ability to withstand electrostatic discharge, higher means less vulnerable. Anti-static measures needed in production, especially for sensitive LEDs.

Thermal Management & Reliability

Term Key Metric Simple Explanation Impact
Junction Temperature Tj (°C) Actual operating temperature inside LED chip. Every 10°C reduction may double lifespan; too high causes light decay, color shift.
Lumen Depreciation L70 / L80 (hours) Time for brightness to drop to 70% or 80% of initial. Directly defines LED "service life".
Lumen Maintenance % (e.g., 70%) Percentage of brightness retained after time. Indicates brightness retention over long-term use.
Color Shift Δu′v′ or MacAdam ellipse Degree of color change during use. Affects color consistency in lighting scenes.
Thermal Aging Material degradation Deterioration due to long-term high temperature. May cause brightness drop, color change, or open-circuit failure.

Packaging & Materials

Term Common Types Simple Explanation Features & Applications
Package Type EMC, PPA, Ceramic Housing material protecting chip, providing optical/thermal interface. EMC: good heat resistance, low cost; Ceramic: better heat dissipation, longer life.
Chip Structure Front, Flip Chip Chip electrode arrangement. Flip chip: better heat dissipation, higher efficacy, for high-power.
Phosphor Coating YAG, Silicate, Nitride Covers blue chip, converts some to yellow/red, mixes to white. Different phosphors affect efficacy, CCT, and CRI.
Lens/Optics Flat, Microlens, TIR Optical structure on surface controlling light distribution. Determines viewing angle and light distribution curve.

Quality Control & Binning

Term Binning Content Simple Explanation Purpose
Luminous Flux Bin Code e.g., 2G, 2H Grouped by brightness, each group has min/max lumen values. Ensures uniform brightness in same batch.
Voltage Bin Code e.g., 6W, 6X Grouped by forward voltage range. Facilitates driver matching, improves system efficiency.
Color Bin 5-step MacAdam ellipse Grouped by color coordinates, ensuring tight range. Guarantees color consistency, avoids uneven color within fixture.
CCT Bin 2700K, 3000K etc. Grouped by CCT, each has corresponding coordinate range. Meets different scene CCT requirements.

Testing & Certification

Term Standard/Test Simple Explanation Significance
LM-80 Lumen maintenance test Long-term lighting at constant temperature, recording brightness decay. Used to estimate LED life (with TM-21).
TM-21 Life estimation standard Estimates life under actual conditions based on LM-80 data. Provides scientific life prediction.
IESNA Illuminating Engineering Society Covers optical, electrical, thermal test methods. Industry-recognized test basis.
RoHS / REACH Environmental certification Ensures no harmful substances (lead, mercury). Market access requirement internationally.
ENERGY STAR / DLC Energy efficiency certification Energy efficiency and performance certification for lighting. Used in government procurement, subsidy programs, enhances competitiveness.