LED Lamp 594UYD/S530-A3 Datasheet - Brilliant Yellow - 20mcd - 2.0V - 60mW - English Technical Document

1. Product Overview

This document provides the complete technical specifications for a high-brightness, brilliant yellow LED lamp. The device is part of a series engineered for applications demanding superior luminous output and reliability. It features a yellow diffused resin encapsulation, which helps in achieving a wide and uniform viewing angle, making it suitable for various indicator and backlighting purposes.

The core advantages of this LED include its robust construction, compliance with major environmental regulations such as RoHS, REACH, and Halogen-Free standards, and availability in user-friendly packaging formats like tape and reel for automated assembly processes. It is designed to serve as a reliable component in consumer electronics and display systems.

2. Technical Specifications Deep Dive

2.1 Absolute Maximum Ratings

The device's operational limits are defined to ensure long-term reliability and prevent catastrophic failure. The continuous forward current (IF) is rated at 25 mA, with a permissible peak forward current (IFP) of 60 mA under pulsed conditions (1/10 duty cycle @ 1 kHz). The maximum reverse voltage (VR) is 5 V. The power dissipation (Pd) must not exceed 60 mW. The operating temperature range (Topr) is from -40°C to +85°C, while the storage temperature (Tstg) extends to +100°C. The device can withstand a soldering temperature (Tsol) of 260°C for up to 5 seconds.

2.2 Electro-Optical Characteristics

Key performance parameters are measured at a standard test condition of 25°C ambient temperature and a forward current of 20 mA.

• Luminous Intensity (Iv): The typical value is 20 millicandelas (mcd), with a minimum of 10 mcd.
• Viewing Angle (2θ1/2): The device offers a very wide typical viewing angle of 180 degrees.
• Peak Wavelength (λp): The typical peak emission is at 591 nanometers (nm).
• Dominant Wavelength (λd): The typical dominant wavelength is 589 nm.
• Spectrum Radiation Bandwidth (Δλ): The typical spectral width is 20 nm.
• Forward Voltage (VF): Typically 2.0 V, ranging from a minimum of 1.7 V to a maximum of 2.4 V.
• Reverse Current (IR): Maximum of 10 μA when a reverse voltage of 5 V is applied.

Measurement uncertainties are noted: ±0.1V for forward voltage, ±10% for luminous intensity, and ±1.0nm for dominant wavelength.

2.3 Device Selection and Binning

The LED utilizes an AlGaInP chip material to produce its brilliant yellow color. The resin color is yellow diffused. The datasheet indicates a binning system for key parameters, though specific bin codes for luminous intensity (CAT), dominant wavelength (HUE), and forward voltage (REF) are referenced in the packing label explanation, suggesting the product is available in sorted performance grades to meet application-specific consistency requirements.

3. Performance Curve Analysis

The datasheet includes several characteristic graphs that provide deeper insight into the device's behavior under varying conditions.

3.1 Spectral and Angular Distribution

The Relative Intensity vs. Wavelength curve shows the emission spectrum centered around 591 nm. The Directivity pattern illustrates the 180-degree viewing angle, confirming the diffused lens's effectiveness in spreading light.

3.2 Electrical and Thermal Behavior

The Forward Current vs. Forward Voltage (IV Curve) depicts the non-linear relationship, crucial for designing current-limiting circuits. The Relative Intensity vs. Forward Current curve shows how light output increases with current, important for brightness control.

The Relative Intensity vs. Ambient Temperature and Forward Current vs. Ambient Temperature graphs are critical for thermal management design. They show how luminous efficiency decreases and the required forward current changes as the operating temperature rises, highlighting the need for adequate heat sinking in high-power or high-ambient-temperature applications.

4. Mechanical and Package Information

4.1 Package Dimensions

A detailed dimensional drawing is provided. Key notes specify that all dimensions are in millimeters, the flange height must be less than 1.5mm, and the general tolerance is ±0.25mm unless otherwise stated. This information is essential for PCB footprint design and ensuring proper fit within the assembly.

4.2 Polarity Identification and Mounting

While the specific lead identification is shown in the dimension diagram, standard practice for radial LEDs involves identifying the cathode (negative lead) often by a shorter lead, a flat spot on the lens, or a notch in the flange. The datasheet stresses the importance of aligning PCB holes exactly with the LED leads to avoid mounting stress.

5. Soldering and Assembly Guidelines

Proper handling is critical to maintain LED performance and longevity.

5.1 Lead Forming

• Bending must occur at least 3mm from the epoxy bulb base.
• Forming must be done before soldering.
• Avoid stressing the package; cutting should be done at room temperature.
• Precise alignment with PCB holes is mandatory to prevent stress.

5.2 Soldering Parameters

Recommended conditions are provided for both hand and dip soldering:

• Hand Soldering: Iron tip temperature max 300°C (30W max), soldering time max 3 seconds.
• Dip Soldering: Preheat temperature max 100°C (60 sec max), solder bath temperature max 260°C for 5 seconds.
• A minimum distance of 3mm must be maintained from the solder joint to the epoxy bulb for both methods.
• A soldering profile diagram is included, emphasizing a controlled ramp-up, peak temperature dwell, and controlled cool-down to prevent thermal shock.
• Soldering (dip or hand) should not be performed more than once.
• LEDs must be protected from mechanical shock until they cool to room temperature post-soldering.

5.3 Cleaning

If cleaning is necessary, use isopropyl alcohol at room temperature for no more than one minute. Ultrasonic cleaning is strongly discouraged but, if unavoidable, must be pre-qualified to avoid damaging the LED package.

5.4 Storage Conditions

LEDs should be stored at ≤30°C and ≤70% Relative Humidity. The storage life after shipping is 3 months. For longer storage (up to one year), they must be kept in a sealed container with a nitrogen atmosphere and desiccant.

6. Packaging and Ordering Information

6.1 Packing Specification

The LEDs are packed in anti-static bags, placed in inner cartons, and finally shipped in outside cartons. The standard packing quantity is a minimum of 200-500 pieces per bag, 5 bags per inner carton, and 10 inner cartons per master (outside) carton.

6.2 Label Explanation

Labels on the packaging contain several codes:

• CPN: Customer's Production Number
• P/N: Production Number (Device Part Number)
• QTY: Packing Quantity
• CAT, HUE, REF: Binning codes for Luminous Intensity, Dominant Wavelength, and Forward Voltage, respectively.
• LOT No: Manufacturing Lot Number for traceability.

7. Application Notes and Design Considerations

7.1 Typical Applications

This LED is well-suited for use as an indicator or backlight in:

• Television Sets
• Computer Monitors
• Telephones
• General Computer Peripherals

7.2 Critical Design Considerations

Heat Management: As highlighted in the performance curves, LED efficiency drops with temperature. The design must ensure the junction temperature remains within safe limits by considering the forward current, ambient temperature, and PCB thermal conductivity. Exceeding the maximum power dissipation (60mW) or operating temperature can drastically reduce lifespan and light output.

Current Driving: The LED must be driven with a constant current source or appropriate current-limiting resistor, calculated based on the supply voltage and the LED's forward voltage (typical 2.0V, max 2.4V). The circuit must respect the absolute maximum continuous current of 25 mA.

ESD and Moisture Sensitivity: The device is packaged in moisture-resistant, anti-static materials. Standard ESD (Electrostatic Discharge) precautions should be followed during handling to prevent damage from static electricity.

8. Technical Comparison and FAQs

8.1 Differentiation

Compared to standard yellow LEDs, this device's key differentiators are its very wide 180-degree viewing angle due to the diffused lens, its compliance with stringent halogen-free standards (Br <900ppm, Cl <900ppm, Br+Cl <1500ppm), and its design for higher brightness applications. The AlGaInP chip technology typically offers higher efficiency and better color purity for yellow/amber colors compared to some older technologies.

8.2 Frequently Asked Questions

Q: What is the difference between peak wavelength and dominant wavelength?
A: Peak wavelength (λp) is the point of maximum spectral power. Dominant wavelength (λd) is the single wavelength perceived by the human eye that matches the color of the light. For LEDs, they are often close but not identical.

Q: Can I drive this LED at 30mA for more brightness?
A: No. The Absolute Maximum Rating for continuous forward current is 25 mA. Exceeding this rating compromises reliability and may cause permanent damage. For higher brightness, select an LED rated for a higher current.

Q: Why is maintaining a 3mm distance from the solder joint to the bulb so important?
A: This prevents excessive heat from traveling up the lead and damaging the internal semiconductor die or the epoxy resin, which can cause cracking, delamination, or shifts in optical properties.

Q: How do I interpret the binning codes (CAT, HUE, REF) on the label?
A> These codes correspond to specific ranges of luminous intensity, dominant wavelength, and forward voltage, respectively. Consult the manufacturer's separate binning specification document to understand the exact performance range associated with each code, allowing for tighter consistency in your application.