CHANZON 5mm Diffused LED Diode Kit Instruction Manual

1. Important Safety Warnings

• Do not exceed rated voltage/current.
• Avoid water/moisture contact.
• Keep away from children.
• Professional installation is recommended.
• Dispose of as electronic waste.

2. Product Overview

The CHANZON 5mm Diffused LED Diode Kit provides a versatile assortment of light-emitting diodes for various electronic projects. These LEDs feature a diffused lens for a wider viewing angle and come in multiple colors, operating at a nominal voltage of 3V.

The kit includes LEDs in various colors, individually packaged for easy identification and storage.

3. Specifications

The following table details the electrical and optical characteristics of the LEDs included in this kit:

Physical Dimensions:

• Lens Diameter: 5.0mm / 0.197inch
• Lens Height: 5.8mm / 0.228inch
• Lead Spacing: 2.54mm / 0.100inch
• Lead Length: 17.0mm / 0.669inch (short), 18.5mm / 0.728inch (long)
• Lead Thickness: 0.5mm / 0.020inch
• Tolerance: ±5%

4. Setup and Installation

4.1 LED Storage Conditions

• Temperature: 10°C - 26°C
• Humidity: 40% - 65%
• Store in sealed packaging.

4.2 Handling Precautions

• Wear gloves or finger cots when inspecting or handling LEDs.
• Workbench must be grounded.
• Reseal packaging immediately after opening to prevent lead oxidation.

4.3 Through-hole Insertion - ESD Protection

1. Before production, verify all equipment grounding wires are functioning properly.
2. Check that personnel wrist straps are functioning and that the metal contact is tightly secured against bare skin.
3. Operators should wear anti-static gloves or finger cots during insertion.
4. Work surfaces must be covered with grounded anti-static mats, with all mats interconnected to ground.
5. Use opened components within 24 hours to prevent oxidation/rust on leads.

4.4 Soldering Methods for Two-pin LEDs

Four common soldering methods are applicable: Manual soldering, automatic spot soldering, dip soldering, and wave soldering.

• Manual Soldering: Set soldering iron temperature to approximately 315°C. Soldering time should not exceed 5 seconds (preferably within 3 seconds). Do not exceed three soldering cycles. Temperature settings depend on solder wire composition and are not fixed.
• Automatic Spot Soldering: Follow standard procedures. Temperature set according to solder composition. Duration: 3 seconds.
• Dip Soldering: Common in China. Verify solder pot temperature before use—maximum 235°C ± 5°C. Dipping time not to exceed 5 seconds. Monitor solder temperature, select appropriate flux, and keep solder surface clean.
• Wave Soldering: Advanced method. Flux selection is critical; different flux types affect joint finish quality. Preheat time affects solder quality. Monitor solder level regularly, replace solder periodically. Adjust temperature according to solder bar composition, but maximum should not exceed 260°C ± 5°C, and dwell time should not exceed 5 seconds.

For all soldering methods: Equipment must be grounded, equipment static voltage not to exceed 30V, and personnel static voltage not to exceed 50V. Constant-temperature soldering irons are recommended for manual soldering. In cold, dry environments, minimize personnel movement to prevent static generation.

4.5 Lead Forming

Maintain a minimum 3 mm distance from the bend point to the bottom of the epoxy body. Do not bend leads during or after soldering. If lead forming is necessary, it must be done before soldering.

5. Operating Guidelines

• Operating Note: LED service life decreases along a curve with increasing current and temperature. Particularly, reverse leakage current increases significantly with temperature, accelerating LED degradation.
• Circuit Design: Ground circuit is recommended in PCB design.
• Critical Operating Environment: Maintain humidity between 50% and 80%; otherwise, there is a risk of electrostatic discharge damage or overcurrent failure. Operating temperature range: -20°C to 70°C.

5.1 Special Notes for White LEDs

• Do not mix different grade/bin white LEDs, especially different color coordinates.
• Do not connect in series LEDs with different forward voltage ratings.
• Constant current drive is recommended.

6. Maintenance

To ensure the longevity and optimal performance of your LEDs, follow these maintenance guidelines:

• Always reseal LED packaging immediately after opening to prevent lead oxidation.
• For soldering equipment, regularly monitor solder levels and replace solder periodically to maintain quality.
• Keep the operating environment within the recommended humidity range (50%-80%) to prevent electrostatic discharge and overcurrent issues.

7. Troubleshooting

If your LEDs are not functioning as expected, consider the following:

• No Light Output: Check polarity (long lead is positive, short lead is negative). Ensure the correct voltage and current are applied, not exceeding the maximum ratings. Verify all connections are secure.
• Dim Light: Ensure sufficient forward current (typically 20mA). Check for proper voltage supply.
• Short Lifespan: Operating LEDs above their rated current or in high-temperature environments can significantly reduce their lifespan. Ensure proper heat dissipation and adhere to operating guidelines. Reverse leakage current increases with temperature, accelerating degradation.
• Inconsistent Brightness (White LEDs): Avoid mixing white LEDs from different grades/bins, as this can lead to variations in color coordinates and brightness.

8. User Tips

Based on general user experiences with similar LED products, here are some helpful tips:

• Always use a current-limiting resistor in series with your LEDs to prevent damage from excessive current. The resistor value can be calculated using Ohm's Law (R = (Vs - Vf) / I), where Vs is the supply voltage, Vf is the LED's forward voltage, and I is the desired forward current.
• When working with multiple LEDs, consider using a breadboard for prototyping to easily test circuits before final soldering.
• For projects requiring consistent brightness and color, especially with white LEDs, try to use LEDs from the same batch or supplier to minimize variations.

9. Warranty and Support

For warranty information, technical support, or further inquiries, please refer to the seller's official store page or contact the manufacturer directly. Keep your purchase records for any warranty claims.

A detailed user manual in PDF format is available for download: Download User Manual (PDF)