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Custom 12×25 Round Top Neon with 3838 RGB – High-Density, 120 LEDs/m, DC24V

Custom 12×25 round top neon with 3838 RGB LEDs, 120 LEDs/m, DC24V, 14W/m, and IP67 waterproof. High-density, seamless light – Drew’s favorite choice for RGB neon.

Project Behind-the-Scenes

8 min read • By Elisa

Shenzhen, China – September 2026

When it comes to RGB neon strips, the industry standard is typically 5050 RGB LEDs. But for projects that demand higher density, smoother transitions, and more vibrant effects, the 3838 RGB LED is an excellent upgrade – and it’s Drew’s favorite choice.

Drew recently approached us for a custom neon solution using the 3838 RGB chip. The result? A 12×25 round top neon strip that delivers exceptional brightness and color quality in a compact, durable package.


The Challenge: 5050 vs 3838 – Why Density Matters

Feature

Standard 5050 RGB

Upgrade 3838 RGB

LED Size

5.0 × 5.0 mm

3.8 × 3.8 mm

Typical Density

30–60 LEDs/m

60–120 LEDs/m

Brightness

High

High (comparable)

Color Mixing

Good

Excellent (smoother transitions)

Best For

General lighting, standard strips

High-density, seamless effects

The 3838 RGB LED is smaller than the 5050, allowing for higher density while maintaining excellent brightness and color saturation.


Drew’s Project: A Custom 12×25 Round Top Neon

Drew specified a 12×25 round top neon configuration, which provides a soft, diffused glow ideal for architectural outlining, signage, and creative installations.

Parameter

Specification

Product Type

Round Top Neon with RGB Tape

LED Type

SMD3838 RGB

LED Density

120 LEDs/m

Power

14W/m

Voltage

DC24V

PCB Width

10mm

Neon Profile

12×25 round top

Beam Angle

120°

Waterproof

IP67 (typical)

Length

Customizable

Warranty

5 years (LED strip) / 3 years (neon housing)


Why 3838 RGB? Drew’s Favorite Choice

Drew has consistently chosen 3838 RGB LEDs for his projects, and for good reason:

Advantage

Why It Matters

Higher density (120 LEDs/m)

Smoother, more seamless light – no visible hotspots

Better color mixing

Superior blending for vibrant, uniform colors

Compact size

Fits into tighter neon profiles

Excellent brightness

Comparable to 5050 despite smaller size

Flicker‑free performance

Reliable for video and broadcast applications

“The 3838 is my go‑to for high‑density RGB neon. The color quality and consistency are unmatched.” – Drew, repeat client


Product Specifications

Parameter

Value

LED Type

SMD3838 RGB

LED Density

120 LEDs/m

Voltage

DC24V

Power

14W/m

PCB Width

10mm

Neon Profile

12×25 round top

Beam Angle

120°

Control

SPI (addressable) or analog

Waterproof

IP67 (silicone housing)

Length

Customizable (5m standard)


Key Features

1. High‑Density 120 LEDs/m – Seamless, Smooth Light

With 120 LEDs per meter, this neon strip delivers:

  • Continuous, seamless illumination – no visible dark spots or gaps

  • Smooth colour transitions – ideal for dynamic RGB effects

  • High brightness – visible even in daylight conditions

2. SMD3838 RGB – Compact, Powerful, Versatile

The 3838 RGB LED offers:

  • Excellent color mixing – vibrant, saturated colors

  • Compact footprint – fits into slim neon profiles

  • High reliability – proven performance in demanding applications

3. 12×25 Round Top Neon Profile – Professional Finish

The round top neon housing provides:

  • Soft, diffused light – eliminates harsh LED dots

  • Professional appearance – ideal for exposed installations

  • Durable silicone material – UV‑resistant and anti‑yellowing

4. DC24V Operation – Long Runs, Consistent Brightness

Operating at DC24V offers:

  • Reduced voltage drop – consistent brightness over longer distances

  • Efficient power consumption – 14W/m

  • Compatibility with standard 24V power supplies

5. IP67 Waterproof – Indoor & Outdoor Ready

The IP67 rating ensures:

  • Full dust protection

  • Temporary immersion protection

  • Suitable for outdoor facades, wet locations, and exposed installations

6. Customizable Length – Tailored to Your Project

Available in standard 5m rolls or custom lengths, with options for:

  • Custom connector types

  • Custom wire lengths

  • Custom neon colors


Applications

Application

Why This Neon Fits

Architectural outlining

12×25 round top, IP67, seamless light

Signage and channel letters

High density, vibrant colors, diffused glow

Display cases & retail shelving

Compact neon profile, uniform illumination

Outdoor facades

IP67, UV‑resistant silicone

Cove & accent lighting

Flexible, easy installation

Stage & event lighting

RGB control, smooth effects

Hospitality & residential

Warm or vibrant color options


Summary

Advantage

Benefit

120 LEDs/m

High density, seamless light

3838 RGB LED

Superior color mixing, compact size

12×25 round top neon

Professional, diffused glow

DC24V operation

Long runs, consistent brightness

IP67 waterproof

Indoor and outdoor use

14W/m

Energy‑efficient

Drew’s choice

Trusted by a repeat client


Looking for High‑Density RGB Neon?

Drew’s project is a perfect example of how we work with clients to deliver exactly what they need – even when it falls outside standard specifications.

Whether you need 3838 RGB, 5050 RGB, or other custom configurations, we can help.

👉 Contact Us Today to discuss your custom neon project.