Jul 09, 2026

SML-LX0404SIUPGUSB RGB SMD LED: Compact 0404 Package for Multi-Color Status Indication

Compact RGB SMD LED

SML-LX0404SIUPGUSB Compact 0404 RGB Surface-Mount LED

SML-LX0404SIUPGUSB is a compact 0404 RGB surface-mount LED from Lumex designed for products that need multi-color status indication in a very small PCB area. By combining red, green, and blue output in one top-view SMD package, it helps product teams create clear visual feedback without adding multiple separate LED locations.

With its compact footprint, RGB output capability, and electro-optical characteristics specified at low drive current, SML-LX0404SIUPGUSB is a practical option for compact user interfaces, status indicators, ring lighting, light-pipe designs, access control devices, smart home products, handheld electronics, and other space-limited applications.

0404 package
Small footprint for compact PCB layouts
RGB output
Multi-color indication from one LED position
Top-view SMD
Suitable for icons, light pipes, and ring illumination
Low-current evaluation
Electro-optical characteristics specified at IF = 2mA
Product overview diagram of the Lumex SML-LX0404SIUPGUSB compact RGB surface-mount LED showing package structure and key features

▲ Product overview: compact RGB surface-mount LED design with a small package footprint for space-limited PCB applications.

Key Features of SML-LX0404SIUPGUSB

Compact 0404 Package Suitable for space-limited PCB layouts where multiple separate LED positions may not be practical.
RGB Output Supports multi-color status indication from one compact LED position.
Low-Current Indication Electro-optical characteristics are specified at IF = 2mA, supporting low-current status indication evaluation.
Top-View Design Useful for light pipes, icons, ring illumination structures, and front-panel visual indication.
Low-Profile Form Factor Supports compact product designs with limited mechanical space.
Surface-Mount Package Fits SMT assembly processes for compact electronic product designs.

Low-Current Operating Capability for Status Indication

In compact electronic products, indicator LEDs need to provide clear visual feedback while keeping current consumption under control. This is especially useful for battery-powered devices, access control products, handheld electronics, and standby-status indicators.

1 Low-current evaluation

Electro-optical characteristics are specified at IF = 2mA, helping engineers review performance under low drive-current conditions.

2 RGB indication review

Design teams can evaluate RGB output, color behavior, and visual status feedback from one compact LED position.

3 Compact interface fit

The 0404 package supports small icons, ring lighting, light windows, and space-limited user interface designs.

Design takeaway: SML-LX0404SIUPGUSB helps product teams evaluate compact RGB status indication where PCB space and current consumption are both design concerns.

Application Example: Smart Lock Ring Illumination

Why it fits this application

One high-volume application example for SML-LX0404SIUPGUSB is smart lock ring illumination. In this type of product, the LED is used to illuminate a ring around the lock interface, helping users recognize different product states through color.

Design advantage

This type of design requires a very small RGB LED because the available space around the lock structure is limited. By using one compact RGB SMD LED, the product can support multiple indication colors from a single LED position while maintaining a clean front-panel appearance.

Smart lock ring illumination application showing different status colors created with a compact RGB LED

▲ Application example: compact RGB LED illumination used around a smart lock ring to display different status colors.

Field Use and Quality Confidence

For compact indicator applications, LED selection is not only about package size. Product teams also need confidence that the selected LED can support stable indication performance in real use.

High-volume application use

SML-LX0404SIUPGUSB has been used in compact RGB indication applications, including smart lock ring illumination.

Strong field-use record

In the referenced application, the part has shown a strong field-use record with no reported customer complaints from that application.

This application history gives product teams an additional reason to consider SML-LX0404SIUPGUSB for status indication, ring lighting, compact icons, and other space-limited interface designs.

Typical Applications

Access control devices Smart locks Smart home products Compact consumer electronics Small HMI interfaces Industrial control panels Medical equipment interfaces Laboratory equipment interfaces Battery charging indicators Power status indicators Panel icons Light windows and light-pipe designs

How Lumex Can Help

Lumex offers a broad range of LED indicator and surface-mount LED options for product teams that need practical visual indication solutions. If your project needs compact multi-color indication, Lumex can help review product options and discuss whether SML-LX0404SIUPGUSB fits your application requirements.

Contact Lumex for Product Guidance

Need help selecting a compact RGB SMD LED for your project?
Contact Lumex to discuss product options, application requirements, and compact RGB indication solutions.

Buy from Authorized Distributors

Ready to evaluate SML-LX0404SIUPGUSB? Check availability or place an order through distributor channels.

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