🔶 1×3×4mm Rectangular Type LED Lamps — Ultra-Compact, High-Precision Light Solutions

The 1×3×4mm rectangular type LED lamp is a miniature, high-efficiency lighting component engineered for applications where space is extremely limited yet reliable visual indication is required. Its slim rectangular housing—only 1mm thick, 3mm wide, and 4mm tall—offers outstanding PCB compatibility, precise beam control, and versatile placement in compact electronic devices.

These LEDs are widely adopted in consumer electronics, instrumentation, telecom equipment, portable devices, and custom indicator arrays, thanks to their balanced brightness, energy efficiency, and long operational lifespan. The rectangular shape provides directional lighting that round LEDs cannot achieve, making them ideal for tight layouts and narrow window indicators.

✨ Key Features of 1×3×4mm Rectangular LED Lamps

1. Ultra-Miniature Rectangular Package

• Slim 1mm thickness for ultra-compact integration

• 3×4mm face for clean, narrow illumination windows

• Suitable for high-density PCB installations

2. Directional, Focused Light Emission

The rectangular lens shape allows:

• Clear and concentrated light output

• Minimal side-spill illumination

• High clarity in panel indicators

Perfect for small icons, bar-style displays, and equipment signal slots.

3. Available in Multiple Colors

Options typically include:

• Red

• Green

• Yellow

• Blue

• White

Ideal for multi-status indicators and low-power displays.

4. Low Power Consumption

These LEDs provide:

• High luminous efficiency

• Minimal heat generation

• Long operational lifetime

Suitable for handheld or battery-powered products.

5. High Reliability & Durability

Made from high-grade epoxy resin and stable semiconductor chips, offering:

• Mechanical shock resistance

• Moisture durability

• Stable forward voltage and brightness

⚙️ Applications of 1×3×4mm Rectangular LED Lamps

📟 1. Indicator Lights in Consumer Electronics

Used in:

• Charging indicators

• Mode selection indicators

• Compact front-panel icons

📡 2. Telecommunications & Networking Equipment

Ideal for:

• Signal status LEDs

• Port activity lights

• Device diagnostics

🧰 3. Industrial Control Panels

Provides clear, narrow output for:

• Error alerts

• Machine status signals

• Control system feedback lights

🔋 4. Portable and Wearable Devices

Due to their ultra-small footprint, these LEDs are ideal for:

• Health tracking devices

• Smart accessories

• Compact handheld instruments

📐 5. Custom Display Arrays

The rectangular geometry makes them perfect for:

• Vertical or horizontal bar graph displays

• Multi-segment indicators

• Custom-pattern light modules

📘 Benefits of Using 1×3×4mm Rectangular LEDs

✔ Space-Saving Miniature Design

Ideal for next-generation compact electronics requiring high-density component layout.

✔ Clear & Focused Illumination

Rectangular profile reduces light bleeding, enhancing panel clarity.

✔ Flexible Orientation on PCBs

Can be mounted upright or horizontally depending on application needs.

✔ Low Energy Consumption

Optimized for low-current operation without sacrificing brightness.

✔ Long-Term Reliability

Suitable for devices requiring constant indicator illumination.

📂 Case Study: Compact Medical Equipment Indicator Upgrade

A medical technology company required an indicator LED for a handheld diagnostic tool with extremely limited internal space. They switched to 1×3×4mm rectangular LEDs.

Results:

• Achieved 40% space savings on the PCB

• Improved directional clarity for small viewing windows

• Increased product reliability with long-life LED components

• Reduced heat generation compared to older SMD LEDs

This upgrade allowed the manufacturer to redesign the device into a thinner, lighter model.

💬 User Testimonials

Electronics Engineer – Germany

“The 1×3×4mm LEDs fit perfectly in tight locations where no other LED size works.”

Product Designer – Japan

“Their rectangular beam output gives our UI panels a sharp, clean look—much better than round LEDs.”

Hobbyist – USA

“Easy to solder, bright for their size, and perfect for custom bar graph projects.”

🏁 Conclusion

The 1×3×4mm rectangular type LED lamp is a compact, efficient, and versatile lighting solution perfect for engineers and designers working on space-constrained devices. Its directional output, low power requirements, and high reliability make it ideal for advanced electronics, control systems, and miniaturized consumer devices.

Whether you’re developing a next-generation handheld gadget, optimizing PCB space, or building a crisp indicator panel, this miniature LED delivers exceptional performance in a tiny footprint.

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