551-3009F Dialight LED – Green Through-Hole Indicator

551-3009F – Compact LED Indicator by Dialight for PCB Status Signaling

The LED Circuit Board Indicators 551-3009F by Dialight provide a reliable, energy-efficient visual status indicator for a wide variety of printed circuit board (PCB) applications. With a compact housing, high-visibility green LED, and easy-through-hole mounting, this component is ideal for embedded systems, control panels, and instrumentation boards where clear status feedback is essential.

In this blog, we’ll explore its technical specs, key benefits, typical use cases, installation instructions, and how to buy or download the datasheet from Xon Electronics.

Technical Specifications of 551-3009F

• Manufacturer: Dialight

• Part Number: 551-3009F

• Type: LED Circuit Board Indicator

• LED Color: Green

• Mounting Type: Through-Hole

• Lens Type: Diffused

• Lens Style/Size: Round with domed top, 3mm

• Voltage Rating: 2.1V (typical)

• Current Rating: 20mA

• Package Configuration: Single LED, 2 leads

• Category: Optoelectronics, LED Circuit Board Indicators by Dialight

The 551-3009F LED Circuit Board Indicators by Dialight deliver superior visibility, durability, and easy integration into both low- and high-volume designs.

Key Features of 551-3009F

• High-Efficiency Green LED – Excellent visibility at low current

• Diffused Lens Design – Provides a soft, even glow for easy status reading

• Standard 3mm Package – Fits most through-hole layouts

• Durable Plastic Housing – Ensures long life and mechanical strength

• RoHS Compliant – Environmentally safe and globally accepted

These features make LED Circuit Board Indicators by Dialight ideal for status indication in power systems, instrumentation, and user interfaces.

Applications of 551-3009F Indicator

• Power ON/OFF Indicators

• Fault or Warning Lights

• Data Transmission Status

• Embedded System Diagnostics

• Consumer Electronics Feedback Lights

From control panels to PCBs in compact devices, the 551-3009F LED Circuit Board Indicators by Dialight are perfect for delivering fast, clear feedback to users and technicians.

Installation Guidelines

Here’s how to install and operate the 551-3009F LED:

[Step 1] Insert the LED leads into the PCB according to polarity (long lead is anode)
[Step 2] Solder in place using standard through-hole reflow methods
[Step 3] Connect a current-limiting resistor in series (typically 330O for 5V systems)
[Step 4] Power on the board and confirm light output
[Step 5] Mount lens flush or slightly raised for best visibility

Thanks to its compact and durable design, LED Circuit Board Indicators by Dialight ensure straightforward integration into dense circuit layouts.

Use Case Scenario – Visual Feedback for Embedded Devices

Scenario: A design engineer needed a reliable status LED for an embedded microcontroller system operating on 3.3V and 5V rails.

Problem: Surface-mount LEDs were too fragile and difficult to rework during prototyping.

Solution: The 551-3009F LED Circuit Board Indicators by Dialight provided a sturdy, easy-to-install option with clear visibility.

Result: Faster prototyping, better durability, and successful deployment in the final product.

This illustrates why LED Circuit Board Indicators by Dialight are trusted in production and development environments alike.

Download Datasheet for 551-3009F

Need voltage-current curves, PCB footprint, or brightness ratings?

[Download 551-3009F Datasheet from Xon Electronics]

Why Buy from Xon Electronics?

Xon Electronics offers a full range of LED Circuit Board Indicators by Dialight, including the 551-3009F:

• 100% Genuine Dialight Components
• Global Shipping – USA, India, Australia, Europe & more
• In-Stock for Immediate Dispatch
• Technical Assistance for Integration
• Safe, Easy, and Secure Checkout

Buy today from www.xonelec.com and upgrade your visual indicators with Dialight reliability.

Conclusion

The 551-3009F LED Circuit Board Indicators by Dialight offer dependable signal visibility, long operational life, and easy through-hole mounting for any electronics application. Compact, efficient, and globally trusted, LED Circuit Board Indicators by Dialight are a perfect fit for engineers seeking quality and performance—now available worldwide at Xon Electronics.

FAQs – 551-3009F Dialight Indicator

Q1. What color is the LED?
Green.

Q2. Is this a surface mount or through-hole component?
Through-hole.

Q3. What voltage does it operate at?
Typically 2.1V at 20mA.

Q4. Can I use it in embedded systems?
Yes, it's perfect for microcontroller and logic-level circuits.

Q5. Is it available globally?
Yes, at www.xonelec.com with shipping to USA, India, Australia, Europe, and more.

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