LCFOCUS SMD5730 LED PCB Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective use of your LCFOCUS SMD5730 LED PCB. This 5W, 40mm diameter LED light board is designed as a versatile light source for various DIY LED lighting projects. Please read this manual thoroughly before installation and operation.

LCFOCUS 5W 40mm SMD5730 LED PCB with color temperature samples

Figure 1: LCFOCUS 5W 40mm SMD5730 LED PCB

2. Safety Information and Warnings

Environment: Do not use the LED PCB in damp or high-temperature environments.
Eye Protection: Avoid direct exposure of eyes to the light beam, as it can be intense.
Power Disconnection: Always ensure power is disconnected from the circuit before any installation, maintenance, or handling of the LED PCB.
Voltage: This LED PCB operates on DC voltage. Do not connect it directly to AC mains (e.g., 220V/110V) without a suitable LED driver.

3. Specifications

Dimensions and electrical specifications for the LED PCB

Figure 2: LED PCB Dimensions and Electrical Parameters

Table 1: General Specifications
Feature	Detail
Model Number	DB-5W-40mm
Brand	LCFOCUS
LED Chip Model	SMD5730
Power	5W
Diameter	40mm
Input Voltage	DC 15-17V
Current	280-300mA
Power Source	DC
Luminous Flux	500 - 999 Lumens
Power Tolerance	1%
LED Chip Brand	Epistar
Beam Angle	120°
Average Life	50,000 hours
Certification	CCC, ROHS
Material	Aluminum (PCB substrate)

Color temperature selection options: Warm White, Natural White, Pure White

Figure 3: Available Color Temperatures

Table 2: Color Temperature Options
Color	Temperature Range
Warm White	3000-3500K
Natural White	4000-4500K
Pure White	6000-6500K

4. Setup and Installation

The LCFOCUS LED PCB is designed for integration into DIY lighting fixtures. Proper connection to an LED driver is crucial.

4.1. General Installation Steps

Power Off: Always turn off the main power supply to the circuit before beginning any installation.
Secure Mounting: Secure the LED PCB in its intended position within your fixture. Ensure good thermal contact if mounting to a heatsink (recommended for optimal performance and longevity).
Connect Driver: Connect the LED PCB to an appropriate DC LED driver (constant current, matching voltage and current specifications). Observe polarity (+ to + and - to -).
Power On: Once all connections are secure and verified, the unit is ready for use. Turn on the power supply.

4.2. LED Connection Diagram

It is critical to use an LED driver. The light board cannot be directly connected to high AC voltage (e.g., 220V or 110V mains).

Wiring diagram showing LED PCBs connected in series to an LED driver

Figure 4: LED Connection Diagram. Note: The light board cannot be directly connected to 220V; an LED driver must be used.

The diagram illustrates how to connect multiple LED PCBs in series to a single LED driver, as well as a single LED PCB to a driver. Ensure the LED driver's output voltage and current match the requirements of the LED PCBs being connected.

4.3. DIY Process Overview

Five steps of DIY LED light assembly: measuring, applying thermal paste, connecting driver, mounting, and final result

Figure 5: DIY Assembly Process

Step 1: Planning & Measurement. Determine the placement and ensure the LED PCB fits your fixture.
Step 2: Thermal Management. Apply thermal paste or a thermal pad between the LED PCB and any heatsink or metal surface for efficient heat dissipation.
Step 3: Driver Connection. Connect the LED PCB to the appropriate LED driver, observing polarity.
Step 4: Mounting. Securely mount the LED PCB within your fixture.
Step 5: Final Assembly. Complete the fixture assembly and test.

5. Operation

Once properly installed and connected to a suitable LED driver, the LED PCB will illuminate when power is supplied to the driver. There are no user-adjustable controls on the LED PCB itself.

6. Maintenance and Precautions

Do Not Disassemble: Do not attempt to disassemble the LED PCB or individual LED beads. This can damage the product and void any support.
Avoid Frequent Switching: Frequent on/off switching can reduce the service life of the LED components.
Ensure Ventilation: Adequate ventilation and heat dissipation are crucial for the longevity and stable operation of the LED PCB. Overheating can significantly shorten its lifespan.
Cleaning: If necessary, gently clean the surface of the LED PCB with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.

7. Troubleshooting

Table 3: Troubleshooting Guide
Problem	Possible Cause	Solution
LED PCB does not light up	No power supply to the LED driver. Incorrect wiring or loose connections. Faulty LED driver. Damaged LED PCB.	Check if the power outlet is working and the driver is receiving power. Verify all connections for correct polarity and tightness. Test the LED driver with a known working load or replace it. Inspect the LED PCB for visible damage.
Excessive heating of the LED PCB	Insufficient ventilation or heat dissipation. Over-driving the LED PCB (incorrect driver).	Ensure the installation location provides sufficient airflow and consider adding a heatsink. Verify the LED driver's output matches the LED PCB's specifications.
Uneven light distribution	Improper mounting angle. Damaged individual LED components.	Adjust the LED PCB's angle within the fixture. If individual LEDs are visibly faulty, the PCB may need replacement.

8. User Tips

Based on available information, no specific user tips or common usage advice beyond the standard instructions were identified. Always ensure proper thermal management for optimal performance and lifespan.

9. Support and After-Sales Service

For any inquiries, technical assistance, or after-sales support, please refer to the seller or manufacturer's provided contact information. Online consultation and support services are typically available.

LCFOCUS DB-5W-40mm